The attribution of human health outcomes to climate change

Posted on September 19, 2025

For over 30 years, detection and attribution (D&A) studies have informed key conclusions in international and national assessments of climate science, providing compelling evidence for the reality and seriousness of anthropogenic effects on the global climate. In the early twenty-first century, D&A methods were adapted to assess the contribution of climate change to longer-term trends […]

Health losses attributed to anthropogenic climate change

Posted on September 17, 2025

Over the last decade, attribution science has shown that climate change is responsible for substantial death, disability and illness. However, health impact attribution studies have focused disproportionately on populations in high-income countries, and have mostly quantified the health outcomes of heat and extreme weather. A clearer picture of the global burden of climate change could […]

Spatial Patterns of Dengue Incidence in Nepal During Record Outbreaks

Posted on June 11, 2025

Dengue, which was first reported as a travel case in Nepal in 2004, was initially confined to the lower plains but has spread to higher elevations. Large outbreaks in 2022 and 2023, reached every district. We calculated the district-wise incidence for 2022 and 2023 by digitizing case data from Nepal’s Ministry of Health and Population […]

Mean daily temperatures predict the thermal limits of malaria transmission better than hourly rate summation

Posted on April 14, 2025

Temperature shapes the geographic distribution, seasonality, and magnitude of mosquito-borne disease outbreaks. Models predicting transmission often use mosquito and pathogen thermal responses measured at constant temperatures. However, mosquitoes live in fluctuating temperatures. Rate summation––non-linear averaging of trait values measured at constant temperatures—is commonly used to infer performance in fluctuating environments, but its accuracy is rarely […]

The overlapping global distribution of dengue, chikungunya, Zika and yellow fever

Posted on April 14, 2025

Arboviruses transmitted mainly by Aedes (Stegomyia) aegypti and Ae. albopictus, including dengue, chikungunya, and Zika viruses, and yellow fever virus in urban settings, pose an escalating global threat. Existing risk maps, often hampered by surveillance biases, may underestimate or misrepresent the true distribution of these diseases and do not incorporate epidemiological similarities despite shared vector species. We address this by […]

Why the growth of arboviral diseases necessitates a new generation of global risk maps and future projections

Posted on April 7, 2025

Global risk maps are an important tool for assessing the global threat of mosquito and tick-transmitted arboviral diseases. Public health officials increasingly rely on risk maps to understand the drivers of transmission, forecast spread, identify gaps in surveillance, estimate disease burden, and target and evaluate the impact of interventions. This paper describes how current approaches […]

Ten quick tips to build a Model Life Cycle

Posted on February 10, 2025

Poisot, T., Becker, D. J., Brookson, C. B., Graeden, E., Ryan, S. J., Turon, G., & Carlson, C. (2025). Ten quick tips to build a Model Life Cycle. PLOS Computational Biology, 21(2), e1012731. ABSTRACT: This paper introduces the Model Life Cycle for biological data-driven research and develops a series of 10 quick tips aimed at facilitating collaborations […]

A holistic systems approach to global health research, practice, and partnerships

Posted on January 21, 2025

Borbor-Cordova, M., Ryan, S., Lowe, R., von Borries, R., & Stewart Ibarra, A. (2024). A Holistic Systems Approach to Global Health Research, Practice, and Partnerships. In Transforming Global Health Partnerships (pp. 51-65). Cham: Springer. ABSTRACT: Emerging and persistent infectious diseases are global threats that have evidenced the interconnectedness and interdependence of the environment, animal, and human systems. […]

Influence of environmental, geographic, socio-demographic, and epidemiological factors on presence of malaria at the community level in two continents

Posted on August 20, 2024

Villena, O. C., Arab, A., Lippi, C. A., Ryan, S. J., & Johnson, L. R. (2024). Influence of environmental, geographic, socio-demographic, and epidemiological factors on presence of malaria at the community level in two continents. Scientific Reports, 14(1), 16734. DOI: https://doi.org/10.1038/s41598-024-67452-5 Article first published online: 20 July 2024 in Scientific Reports ABSTRACT: The interactions of environmental, geographic, […]

EPI Research Day 2024

Posted on March 8, 2024

UF Geography was well represented at this year’s Emerging Pathogens Institute (EPI) Research Day. Simrik Bhandari, a first year Masters student working in the Quantitative Disease Ecology and Conservation (QDEC) lab, presented a poster on the spatial patterns of dengue incidence in Nepal. Gavriella Hecht, a second-year PhD student in the Quantitative Disease Ecology […]

Tales from local scales: life on the landscape after conservation decisions

Posted on February 7, 2024

Dr. Sadie Ryan Associate Professor Department of Geography University of Florida Thursday, February 8, 2024 3:00-3:50 PM (Period 8) Recorded for YouTube Turlington Hall 3018 and Zoom University of Florida Abstract: From restoration of vernal pool habitat, to the struggle for oil in a biodiversity hotspot, to measuring nutritional limits to herbivores in an iconic […]

Trends in mosquito species distribution modeling: insights for vector surveillance and disease control

Posted on October 10, 2023

LIPPI, MUNDIS, SIPPY, FLENNIKEN, CHAUDHARY, HECHT, RYAN – Trends in mosquito species distribution modeling: insights for vector surveillance and disease control Catherine Lippi, Stephanie Mundis, Rachel Sippy, Matthew Flenniken, Anusha Chaudhary, Gavriella Hecht, Colin Carlson, Sadie Ryan Article first published online: 28 August 2023 DOI: https://doi.org/10.1186/s13071-023-05912-z ABSTRACT: Species distribution modeling (SDM) has become an increasingly common […]

Geography Colloquium: Plans may change: Shifting risks of vector-borne diseases on a warming planet

Posted on February 28, 2023

Speaker: Dr. Sadie Ryan Associate Professor Department of Geography University of Florida Thursday, March 2, 2023 3:00-3:50 PM (Period 8) Recorded for YouTube Turlington Hall 3018 and Zoom University of Florida Abstract: This talk is an overview of work from around a decade of collaborations on ecophysiological models of thermal responses of mosquito borne diseases, and […]

Characterizing the Vector Data Ecosystem

Posted on February 15, 2023

LIPPI, RYAN – Characterizing the Vector Data Ecosystem Catherine Lippi, Samuel Rund, Sadie Ryan Article first published online: 8 February 2023 DOI: https://doi.org/10.1093/jme/tjad009 ABSTRACT: A growing body of information on vector-borne diseases has arisen as increasing research focus has been directed towards the need for anticipating risk, optimizing surveillance, and understanding the fundamental biology of […]

Latitudes and land use: Global biome shifts in vegetation persistence across three decades

Posted on January 18, 2023

SOUTHWORTH, RYAN, HERRERO, KHATAMI, BUNTING, HASSAN, MUIR, WAYLEN – Latitudes and land use: Global biome shifts in vegetation persistence across three decades Jane Southworth, Sadie J. Ryan, Hannah V. Herrero, Reza Khatami, Erin L. Bunting, Mehedy Hassan, Carly S. Muir, Peter Waylen Article first published online: 18 January 2023 DOI: https://doi.org/10.3389/frsen.2023.1063188 ABSTRACT: The dynamics of terrestrial […]

Malaria transmission in Nepal under climate change: anticipated shifts in extent and season, and comparison with risk definitions for intervention

Posted on January 3, 2023

BHATTARAI, BLACKBURN, RYAN – Malaria transmission in Nepal under climate change: anticipated shifts in extent and season, and comparison with risk definitions for intervention Shreejana Bhattarai, Jason K. Blackburn, & Sadie J. Ryan Article first published online: 22 December 2022 DOI: https://doi.org/10.1186/s12936-022-04417-x ABSTRACT: Background: Climate and climate change affect the spatial pattern and seasonality of malaria risk. […]

Population distribution within the human climate niche

Posted on November 17, 2022

RYAN – Population distribution within the human climate niche Barry Klinger, Sadie J Ryan Article first published online: 9 November 2022 DOI: https://doi.org/10.1371/journal.pclm.0000086 ABSTRACT: Climate change may pose an acute threat to humanity due to physical and biological constraints on regional habitability. A recent study proposed that the human climate niche is a narrow segment […]

Mosquito Net Fishing as a Normal Accident and the Roles of Traditional and Bureaucratic Authority

Posted on November 14, 2022

RYAN – Mosquito Net Fishing as a Normal Accident and the Roles of Traditional and Bureaucratic Authority Rick Welsha, Elizabeth A. Pickard, Sadie J. Ryan, Joseph H. Bisesi Jr, Joseph Makaure, Donald J. Stewart, David A. Larsen Article first published online: 3 November 2022 DOI: doi.org/10.1080/08941920.2022.2139443 ABSTRACT: In the 1980s, malaria researchers experimented with treating mosquito nets […]

Spatiotemporal Environmental Drivers of Eastern Equine Encephalitis Virus in Central Florida: Towards a Predictive Model for a Lethal Disease

Posted on August 17, 2022

MUNDIS, RYAN – Spatiotemporal Environmental Drivers of Eastern Equine Encephalitis Virus in Central Florida: Towards a Predictive Model for a Lethal Disease Stephanie J Mundis, Steve Harrison, Dave Pelley, Susan Durand, Sadie J Ryan Article first published online: 12 August 2022 DOI: https://doi.org/10.1093/jme/tjac113 ABSTRACT: Eastern equine encephalitis virus (EEEV) is a mosquito-borne virus that affects […]

Temperature impacts the environmental suitability for malaria transmission by Anopheles Gambian and Anopheles stephensi

Posted on March 29, 2022

RYAN – Temperature impacts the environmental suitability for malaria transmission by Anopheles Gambian and Anopheles stephensi Oswaldo C. Villena, Sadie J. Ryan, Courtney C. Murdock, Leah R. Johnson Article first published online: 22 March 2022 DOI: https://doi.org/10.1002/ecy.3685 ABSTRACT: Extrinsic environmental factors influence the spatio-temporal dynamics of many organisms, including insects that transmit the pathogens responsible for vector-borne […]

Global Economic and Diet Transitions Drive Latin American and Caribbean Forest Change during the First Decade of the Century: A Multi-Scale Analysis of Socioeconomic, Demographic, and Environmental Drivers of Local Forest Cover Change

Posted on March 1, 2022

RYAN – Global Economic and Diet Transitions Drive Latin American and Caribbean Forest Change during the First Decade of the Century: A Multi-Scale Analysis of Socioeconomic, Demographic, and Environmental Drivers of Local Forest Cover Change David Lopez-Carr, Sadie J Ryan, Matthew L Clark Article first published online: 21 Jan 2022 DOI: https://doi.org/10.3390/land11030326 ABSTRACT: Latin America and the Caribbean […]

Co-learning during the co-creation of a dengue early warning system for the health sector in Barbados

Posted on January 13, 2022

RYAN, LIPPI – Co-learning during the co-creation of a dengue early warning system for the health sector in Barbados Anna M Stewart-Ibarra, Leslie Rollock, Sabu Best, Tia Brown, Avriel R Diaz, Willy Dunbar, Catherine A Lippi, Roche Mahon, Sadie J Ryan, Adrian Trotman, Cedric J Van Meerbeeck, Rachel Lowe Article first published online: 6 Jan 2022 […]

The Future of Zoonotic Risk Prediction

Posted on September 20, 2021

Philosophical Transactions of the Royal Society B RYAN – The Future of Zoonotic Risk Prediction Colin J. Carlson, Maxwell J. Farrell, Zoe Grange, Barbara A. Han, Nardus Mollentze, Alexandra L. Phelan, Angela L. Rasmussen, Gregory F. Albery, Bernard Bett, David M. Brett-Major, Lily E. Cohen, Tad Dallas, Evan A. Eskew, Anna C. Fagre, Kristian M. Forbes, Rory Gibb, Sam Halabi, Charlotte C. Hammer, Rebecca Katz, Jason Kindrachuk, Renata L. Muylaert, Felicia B. Nutter, Joseph Ogola, Kevin J. Olival, Michelle […]

Examining Wing Length–Abundance Relationships and Pyrethroid Resistance Mutations among Aedes albopictus in a Rapidly Growing Urban Area with Implications for Mosquito Surveillance and Control

Posted on September 7, 2021

International Journal of Environmental Research and Public Health HAMERLINCK, MUNDIS, RYAN – Examining Wing Length–Abundance Relationships and Pyrethroid Resistance Mutations among Aedes albopictus in a Rapidly Growing Urban Area with Implications for Mosquito Surveillance and Control Stephanie J. Mundis, Gabriela Hamerlinck, Emily K. Stone, Ari Whiteman, Eric Delmelle, Tyler Rapp, Michael Dulin, and Sadie J. […]

New study to inform Zika control measures

Posted on May 7, 2021

GAINESVILLE, FL – Climate variation and seasonality affect transmission and control of Zika, a study by Dr. Calistus Ngonghala (UF Mathematics, Emerging Pathogens Institute), Dr. Sadie J. Ryan (UF Geography, Emerging Pathogens Institute), and colleagues at the University of Georgia, Stanford University, and Harvard University has found. By comparing experimental Zika transmission data to annual […]

Effects of changes in temperature on Zika dynamics and control

Posted on May 5, 2021

RYAN – Effects of changes in temperature on Zika dynamics and control Article first published online: 05 MAY 20212 Journal of the Royal Society Interface DOI: 10.1098/rsif.2021.0165 ABSTRACT: When a rare pathogen emerges to cause a pandemic, it is critical to understand its dynamics and the impact of mitigation measures. We use experimental data to […]

Focus Area 2: Medical Geography in Global Health (MGGH)

Medical geography, an important area of health research, applies concepts, methods, and techniques from geography to investigate health-related topics across the world, focusing on spatial aspects of human and animal (livestock and wildlife) disease and health intervention. Sub-areas One Health Risk Mapping Disease Modeling Zoonotic Emergence Spatial Health Disparities Public Health Interventions Spatial Epidemiology Analysis […]

Focus Area 1: Earth System Science

This is the science of the atmosphere, land, biota, and water from a geospatial perspective. By combining contemporary issues such as climate change, environmental extremes, and hazards, this focus area emphasizes the integrative nature of physical and environmental geography. Earth systems scientists use biophysical understanding to identify and solve problems for management and policy. Sub-areas […]

UFGeog at AAG 2021

Posted on April 5, 2021

The UF Geography Department is sending a large (virtual) contingent to Seattle for the 2021 meeting of the American Association of Geographers Find out where you can see a GeoGator present their research below: Panelist Joel Correia Panel title: Querying nature, colonialism and decolonialism Date & Time: April 7, 8:00am-9:15am Talk Presentation Session title: Roads, […]

Celebrating Women Geographers for Women’s History Month

Posted on March 1, 2021

Geography is a diverse field. Throughout the month of March, we will be highlighting the work of Women Geographers, some of whom are #GeoGators. Tierney Shimansky Tierney is a Master’s student who studies land management and conservation in southern Africa. Dr. Yin-Hsuen Chen Yin-Hsuen is a fluvial geomorphologist and Postdoctoral Researcher at the University of […]

Scoping review of distribution models for selected Amblyomma ticks and rickettsial group pathogens

Posted on February 17, 2021

LIPPI, RYAN, WHITE – Scoping review of distribution models for selected Amblyomma ticks and rickettsial group pathogens Catherine A. Lippi, Holly D. Gaff, Alexis L. White, and Sadie J. Ryan Article first published online: 17 FEB 2021 PeerJ DOI: 10.7717/peerj.10596 ABSTRACT: The rising prevalence of tick-borne diseases in humans in recent decades has called attention to […]

International Day of Women and Girls in Science

Posted on February 11, 2021

In observation of the 6th International Day of Women & Girls in Science, we celebrate the scientific contributions of female GeoGators – grad students, postdocs, and faculty.

Implications of Insecticide-Treated Mosquito Net Fishing in Lower Income Countries

Posted on January 8, 2021

RYAN – Implications of Insecticide-Treated Mosquito Net Fishing in Lower Income Countries David A. Larsen, Joseph Makaure, Sadie J. Ryan, Donald Stewart, Adrianne Traub, Rick Welsh, Deirdre H. Love, and Joseph H. Bisesi Jr Article first published online: 8 JAN 2021 Environmental Health Perspectives DOI: 10.1289/EHP7001 ABSTRACT: Introduction: Insecticide-treated mosquito nets (ITNs) are highly effective […]

How Climate Change Is Ushering in a New Pandemic Era

Posted on December 18, 2020

Medical Geographer Dr. Sadie Ryan‘s work was recently discussed in How Climate Change Is Ushering in a New Pandemic Era: A warming world is expanding the range of deadly diseases and risking an explosion of new zoonotic pathogens from the likes of bats, mosquitoes, and ticks by Jeff Goodell in Rolling Stone magazine: “A recent […]

Disease Hunters: Mosquito Mayhem

Posted on December 8, 2020

Florida and Texas have ideal conditions for tropical diseases, Medical Geographer Dr. Sadie Ryan (Florida Climate Institute, Emerging Pathogens Institute) recently told Channel News Asia’s Disease Hunters: Mosquito Mayhem. Learn more about the global effort to detect – and prevent – the spread of infectious diseases at Disease Hunters: Mosquito Mayhem.

Building resilience to mosquito-borne diseases in the Caribbean

Posted on November 24, 2020

RYAN – Building resilience to mosquito-borne diseases in the Caribbean Rachel Lowe, Sadie J. Ryan, Roché Mahon, Cedric J. Van Meerbeeck, Adrian R. Trotman, Laura-Lee G. Boodram, Mercy J. Borbor-Cordova, Anna M. Stewart-Ibarra Article first published online: 24 NOV 2020 PLOS Biology DOI: 10.1371/journal.pbio.3000791 ABSTRACT: Small island developing states in the Caribbean are among the […]

Animal carcasses may increase grazing potential and anthrax transmission risk for elk and bison, but differently

Posted on October 22, 2020

The latest publication led by SEER Lab #MedGeo M.S. Alum, and full-time Spatial Epidemiologist Morgan Walker is available in Royal Society Open Science. In this study, Walker and others examined how ungulates, primarily plains bison and elk, use animal carcasses on the Montana landscape. Working with SEER Lab partners at Turner Enteprises, Inc. (TEI) out […]

Ungulate use of locally infectious zones in a re-emerging anthrax risk area

Posted on October 22, 2020

BLACKBURN, RYAN, URIBASTERRA, WALKER – Ungulate use of locally infectious zones in a re-emerging anthrax risk area Morgan A. Walker, Maria Uribasterra, Valpa Asher, José Miguel Ponciano, Wayne M. Getz, Sadie J. Ryan, and Jason K. Blackburn Article first published online: 21 OCT 2020 Royal Society Open Access DOI: 10.1098/rsos.200246 ABSTRACT: Environmentally mediated indirect pathogen […]

Latest SEER Lab and QDEC Lab publication defines sex-specific anthrax risk for elk

Posted on October 12, 2020

SEER Lab and QDEC Lab‘s latest publication in the Journal of Wildlife Management examines resource selection and anthrax risk in female elk in southwestern Montana. This paper, led by SEER Lab and Geography #MedGeo alum Dr. Anni Yang, builds on previous work defining male elk resource selection in the same study area and compares females […]

Sex-Specific Elk Resource Selection during the Anthrax Risk Period

Posted on October 1, 2020

BLACKBURN, RYAN, YANG – Sex-Specific Elk Resource Selection during the Anthrax Risk Period Anni Yang, Kelly M. Proffitt, Valpa Asher, Sadie J. Ryan, Jason K. Blackburn Article first published online: 01 OCT 2020 The Journal of Wildlife Management DOI: 10.1002/jwmg.21952 ABSTRACT: Anthrax, caused by the spore-forming bacterium Bacillus anthracis, is a zoonosis affecting animals and […]

Climate change could shift disease burden from malaria to arboviruses in Africa

Posted on September 9, 2020

RYAN – Climate change could shift disease burden from malaria to arboviruses in Africa Erin A Mordecai, Sadie J Ryan, Jamie M Caldwell, Melisa M Shah, A Desiree LaBeaud Article first published online: 09 SEPT 2020 The Lancet Planetary Health DOI: 10.1016/S2542-5196(20)30178-9 SUMMARY Malaria is a long-standing public health problem in sub-Saharan Africa, whereas arthropod-borne […]

Mapping Thermal Physiology of Vector-Borne Diseases in a Changing Climate: Shifts in Geographic and Demographic Risk of Suitability

Posted on September 9, 2020

RYAN – Mapping Thermal Physiology of Vector-Borne Diseases in a Changing Climate: Shifts in Geographic and Demographic Risk of Suitability Sadie J. Ryan Article first published online: 09 SEPT 2020 Current Environmental Health Reports (2020) DOI: 10.1007/s40572-020-00290-5 Purpose of Review To describe a collection of recent work published on thermal suitability for vector-borne diseases, in […]

Comparing prioritization strategies for delivering indoor residual spray (IRS) implementation, using a network approach

Posted on September 4, 2020

RYAN – Comparing prioritization strategies for delivering indoor residual spray (IRS) implementation, using a network approach AUTHOR LIST Article first published online: SEPT 2020 Malaria Journal DOI: 10.1186/s12936-020-03398-z Background Indoor residual spraying (IRS) is an effective method to control malaria-transmitting Anopheles mosquitoes and often complements insecticide-treated mosquito nets, the predominant malaria vector control intervention. With insufficient funds […]

Misconceptions About Weather and Seasonality Impact COVID-19 Response

Posted on August 31, 2020

GAINESVILLE, FL – Misconceptions about the way climate and weather impact exposure and transmission of SARS-CoV-2, the virus that causes COVID-19, create false confidence and have adversely shaped risk perceptions, say a team including University of Florida researcher Dr. Sadie Ryan. “Future scientific work on this politically-fraught topic needs a more careful approach,” write the […]

Summarizing the Research and Knowledge Gaps for Mosquito-borne Arboviruses in Ecuador

Posted on August 28, 2020

GAINESVILLE, FL – Researchers and clinicians in Ecuador face a challenging environment: this biodiverse country is home to many disease hosts and vectors. Particularly, the mosquitoes in Ecuador carry and transmit arboviruses (arthropod-borne viruses). This group includes diseases like dengue, chikungunya, Mayaro virus, yellow fever, and Zika, among others. All are spread by overlapping mosquito species. […]

Misconceptions about weather and seasonality must not misguide COVID-19 response

Posted on August 27, 2020

RYAN – Misconceptions about weather and seasonality must not misguide COVID-19 response Colin J. Carlson, Ana C. R. Gomez, Shweta Bansal & Sadie J. Ryan Article first published online: 27 AUG 2020 Nature Communications ABSTRACT: Weather may marginally affect COVID-19 dynamics, but misconceptions about the way that climate and weather drive exposure and transmission have […]

VectorByte: A Global Informatics Platform for studying the Ecology of Vector-Borne Diseases

Posted on August 5, 2020

A new 5-year NSF Division of Biological Infrastructure, awarded to Sadie J. Ryan (University of Florida), Leah R. Johnson (Virginia Tech), and Samuel Rund (University of Notre Dame), in collaboration with Samraat Pawar (Imperial College London), is launching in August 2020. This new initiative – VectorByte – will establish a global open access data platform […]

Age influences the thermal suitability of Plasmodium falciparum transmission in the Asian malaria vector Anopheles stephensi

Posted on July 22, 2020

RYAN – Age influences the thermal suitability of Plasmodium falciparum transmission in the Asian malaria vector Anopheles stephensi K. L. Miazgowicz, M. S. Shocket, S. J. Ryan, O. C. Villena, R. J. Hall, J. Owen, T. Adanlawo, K. Balaji, L. R. Johnson, E. A. Mordecai, and C. C. Murdock Article first published online: 22 JUL […]

Measuring dimensions of HIV-related stigma among college students

Posted on June 25, 2020

JAMES, RYAN – Measuring dimensions of HIV-related stigma among college students James, T. G., Gebru, N. M., Ryan, S. J., & Cheong, J. Article first published online: 25 JUN 2020 Stigma and Health DOI: 10.1037/sah0000266 ABSTRACT: HIV-related stigma remains a critical barrier to achieving national public health objectives including reducing HIV transmissions and retaining people living […]

Dr. Sadie Ryan Best of PLOS 2019!

Posted on May 22, 2020

Dr. Sadie Ryan‘s paper Global expansion and redistribution of Aedes-borne virus transmission risk with climate change in PLoS Neglected Tropical Diseases, was included as the March entry for the Best of PLOS 2019 list. From the announcement: March: Climate change may mean more mosquito-borne diseases worldwide OK, this paper isn’t particularly calming–but it is timely and relevant. Researchers in PLOS […]

In a time of COVID-19, Dr. Ryan talked about deforestation and viral emergence with WLRN

Posted on May 21, 2020

WLRN spoke with Dr. Sadie Ryan, an associate professor of medical geography at the University of Florida. She talked about what we can learn from these studies now that we’re living in a pandemic in a story titled New Study Says Deforestation Could Help Viruses Jump From Animals To Humans, Amid COVID-19 Pandemic.

Examining the relationship between migration and forest cover change in Mexico from 2001 to 2010

Posted on May 13, 2020

New publication in Land Use Policy explores the relationship between demographic and economic changes and forest cover change in Mexico from 2001-2010. In this collaboration between UF Geography’s Sadie J. Ryan and researchers from UCSB and CU Boulder, drivers of sub-national level forest cover change from 2001-2010 – both loss and gain – were explored […]

Flying Under the Radar

Posted on May 11, 2020

GAINESVILLE, FL – University of Florida Associate Professor of Medical Geography Dr. Sadie Ryan (Emerging Pathogens Institute, Quantitative Disease Ecology & Conservation Lab) spoke with WUFT News about vector-borne disease in the time of coronavirus in Flying Under the Radar. “It’s not like mosquitoes went on hold because of COVID,” she said. “The message needs to stay alive.” […]

Spatial variation in the frequency of knockdown resistance genotypes in Florida Aedes aegypti populations

Posted on May 11, 2020

MUNDIS, RYAN – Spatial variation in the frequency of knockdown resistance genotypes in Florida Aedes aegypti populations Stephanie J. Mundis, Alden S. Estep, Christy M. Waits, & Sadie J. Ryan Article first published online: 11 MAY 2020 Parasites & Vectors DOI: 10.1186/s13071-020-04112-3 ABSTRACT: Background The development of insecticide resistance in disease-vectoring mosquito species can lead […]

Conservation in the maelstrom of COVID-19 – a call to action to solve the challenges, exploit opportunities and prepare for the next pandemic

Posted on May 5, 2020

RYAN – Conservation in the maelstrom of COVID-19 – a call to action to solve the challenges, exploit opportunities and prepare for the next pandemic K.L. Evans J.G. Ewen G. Guillera-Arroita J.A. Johnson V. Penteriani S.J. Ryan R. Sollmann I.J. Gordon Article first published online: 05 MAY 2020 Animal Conservation DOI: 10.1111/acv.12601 ABSTRACT: As we […]

New study shows how malaria risk will shift in Africa under climate change

Posted on May 4, 2020

GAINESVILLE, FL – In a new paper in Malaria Journal “Shifting transmission risk for malaria in Africa with climate change: a framework for planning and intervention”, part of a cross-journal collection on the Contribution of Climate Change to Spread of Infectious Disease, QDEC’s Sadie J. Ryan, along with Cat A. Lippi and collaborator Fernanda Zermoglio […]

GeoGator Class of 2020 Commencement

Posted on May 4, 2020

The Department of Geography Commencement for the GeoGator Class of 2020 was held online for the very first time on the 2nd of May, 2020. Watch the whole ceremony here! https://youtu.be/Z5_jfndqzrg Excerpts Dr. Jane Southworth addresses GeoGator Class of 2020 Dunkle Award Winner Sara Shir addresses GeoGator Class of 2020 Dr. Jason Blackburn addresses GeoGator Class […]

Shifting transmission risk for malaria in Africa with climate change: a framework for planning and intervention

Posted on May 1, 2020

LIPPI, RYAN – Shifting transmission risk for malaria in Africa with climate change: a framework for planning and intervention Sadie J. Ryan, Catherine A. Lippi, & Fernanda Zermoglio Article first published online: 01 MAY 2020 Malaria Journal DOI: 10.1186/s12936-020-03224-6 ABSTRACT: Background Malaria continues to be a disease of massive burden in Africa, and the public […]

Spatiotemporal Tools for Emerging and Endemic Disease Hotspots in Small Areas: An Analysis of Dengue and Chikungunya in Barbados, 2013–2016

Posted on April 27, 2020

LIPPI, RYAN – Spatiotemporal Tools for Emerging and Endemic Disease Hotspots in Small Areas: An Analysis of Dengue and Chikungunya in Barbados, 2013–2016 Catherine A. Lippi, Anna M. Stewart-Ibarra, Moory Romero, Avery Q. J. Hinds, Rachel Lowe, Roché Mahon, Cedric J. Van Meerbeeck, Leslie Rollock, Marquita Gittens-St. Hilaire, Adrian R. Trotman, Dale Holligan, Shane Kirton, […]

Machine Learning Predictions of Dengue Patients Outcomes Yield Promising Results

Posted on March 5, 2020

GAINESVILLE, FL – Helping patients with dengue can be challenging – especially in countries with multiple diseases spread by mosquitoes. Dengue, chikungunya, and Zika are viruses spread by the same type of mosquito; all three viruses are present in Ecuador and many other countries in Latin America and the Caribbean. Patients infected with one of […]

Novel Network Approach to Mosquito Control Distribution Yields Insights for a City in Southern Ecuador

Posted on February 24, 2020

GAINESVILLE, FL – Fighting mosquito-borne disease can be costly – in both health and financial resources. While mosquito control is an effective way to combat the spread of diseases like dengue fever, the cost of spraying every house in a city quickly adds up. These costs limit public health vector control programs, which often operate […]

Severity Index for Suspected Arbovirus (SISA): Machine learning for accurate prediction of hospitalization in subjects suspected of arboviral infection

Posted on February 14, 2020

SIPPY, RYAN – Severity Index for Suspected Arbovirus (SISA): Machine learning for accurate prediction of hospitalization in subjects suspected of arboviral infection Rachel Sippy, Daniel F. Farrell, Daniel A. Lichtenstein, Ryan Nightingale, Megan A. Harris, Joseph Toth, Paris Hantztidiamantis, Nicholas Usher, Cinthya Cueva Aponte, Julio Barzallo Aguilar, Anthony Puthumana, Christina D. Lupone, Timothy Endy, Sadie […]

MedGeo researchers present at EPI Research Day

Posted on February 13, 2020

MedGeo researchers from the Quantitative Disease Ecology & Conservation Lab (QDEC Lab) and Spatial Epidemiology & Ecology Research Laboratory (SEER Lab) made a strong showing at Emerging Pathogens Institute‘s EPI Research Day 2020!

A network analysis framework to improve the delivery of mosquito abatement services in Machala, Ecuador

Posted on February 11, 2020

BLACKBURN, LIPPI, MAO, RYAN – A network analysis framework to improve the delivery of mosquito abatement services in Machala, Ecuador Catherine A. Lippi, Liang Mao, Anna M. Stewart-Ibarra, Naveed Heydari, Efraín Beltrán Ayala, Nathan D. Burkett-Cadena, Jason K. Blackburn & Sadie J. Ryan Article first published online: 11 FEB 2020 International Journal of Health Geographics […]

Shifting Risks Of Malaria In Southern Africa – A Regional Analysis

Posted on February 1, 2020

RYAN – SHIFTING RISKS OF MALARIA IN SOUTHERN AFRICA – A REGIONAL ANALYSIS Sadie Ryan, Anna Steynor, Chris Jack, Piotr Wolski, Lisa van Aardenne, Chris Lennard, and Fernanda Zermoglio Article first published online: 1 FEB 2020 USAID Technical Report EXECUTIVE SUMMARY Temperature impacts both the life cycle and habitat of malaria-carrying mosquitoes (genus Anopheles) and […]

Briefing Note: Shifting Burdens: Malaria Risk under Rising Temperatures in Botswana

Posted on February 1, 2020

RYAN – Briefing Note: Shifting Burdens: Malaria Risk under Rising Temperatures in Botswana Sadie Ryan and Fernanda Zermoglio Article first published online: 1 FEB 2020 USAID Briefing Note INTRODUCTION This briefing note provides health practitioners and development planners with information on the shifting pattern of malaria incidence nationally and regionally in Botswana as temperatures rise. The […]

The Influence of Climate on Malaria Incidence in Malawi – A Retrospective Analysis

Posted on February 1, 2020

RYAN – THE INFLUENCE OF CLIMATE ON MALARIA INCIDENCE IN MALAWI A RETROSPECTIVE ANALYSIS Anna Steynor, Chris Jack, Piotr Wolski, Lisa van Aardenne, Chris Lennard, Sadie J. Ryan, Kris Ebi, Lindsay Allen, Nick Graff, and Fernanda Zermoglio Article first published online: 1 FEB 2020 USAID Technical Report EXECUTIVE SUMMARY This report outlines the results of a […]

Geography Colloquium: Decisions will be made – modeling vector borne disease at multiple scales for different purposes and use

Posted on January 10, 2020

Speaker: Dr. Sadie Ryan Associate Professor, Department of Geography, University of Florida Thursday, January 16, 2020 2:50-3:50 PM (Period 8) Turlington Hall Room 3018 University of Florida All are welcome to attend. Forecasting the impacts of climate change on vector-borne diseases (VBDs)—especially those under current public scrutiny and concern, such as malaria, dengue, chikungunya, and […]

Examining the relationship between migration and forest cover change in Mexico from 2001 to 2010

Posted on November 25, 2019

RYAN – Examining the relationship between migration and forest cover change in Mexico from 2001 to 2010 Daniel Ervin, David Lopéz-Carr, Fernando Riosmena, Sadie J.Ryan Article first published online: 25 NOV 2019 Land Use Policy DOI: 10.1016/j.landusepol.2019.104334 ABSTRACT: This project examines the relationship between migration, population, and economic processes, and forest cover change in Mexico […]

Examining the relationship between migration and forest cover change in Mexico from 2001 to 2010

Posted on November 25, 2019

RYAN – Examining the relationship between migration and forest cover change in Mexico from 2001 to 2010 Daniel Ervin, David Lopéz-Carr, Fernando Riosmena, & Sadie J.Ryan Article first published online: 25 NOV 2019 Land Use Policy DOI: 10.1016/j.landusepol.2019.104334 ABSTRACT: This project examines the relationship between migration, population, and economic processes, and forest cover change in […]

Plague in a Changing Environment: A Literature Review for Madagascar

Posted on September 1, 2019

RYAN – Plague in a Changing Environment: A Literature Review for Madagascar Sadie Ryan and Fernanda Zermoglio Article first published online: 1 SEP 2019 USAID Technical Report EXECUTIVE SUMMARY This review identifies environmental factors that contribute to the emergence of plague and plague dynamics in Madagascar and aims to identify the potential implications for decisionmaking and […]

Insecticide Resistance Threatens the Control of Mosquito-Borne Disease in Ecuador

Posted on June 24, 2019

GAINESVILLE – In the battle against vector borne disease, mosquito control using insecticides is an essential tool. But what happens when that tool starts to fail, and how do you know it? Insecticides are regularly used by public health agencies to reduce populations of blood-sucking mosquitoes. Effective control programs are important to public health because, […]

Seasonal and geographic variation in insecticide resistance in Aedes aegypti in southern Ecuador

Posted on June 10, 2019

LIPPI, MUNDIS, RYAN, SIPPY – Seasonal and geographic variation in insecticide resistance in Aedes aegypti in southern Ecuador Sadie J. Ryan, Stephanie J. Mundis, Alex Aguirre, Catherine A. Lippi, Efraín Beltrán, Froilán Heras, Valeria Sanchez, Mercy J. Borbor-Cordova, Rachel Sippy, Anna M. Stewart-Ibarra , Marco Neira Article first published online: 10 JUN 2019 PLoS Neglected […]

New maps show where mosquitoes will invade Ecuador’s Andes mountains

Posted on April 25, 2019

GAINESVILLE – Blood sucking insects such as the Yellow fever mosquito, Aedes aegypti, are more than just a nuisance in Ecuador, they also spread diseases such as dengue fever, chikungunya and Zika. A warming world means that public health officials must decide where to direct surveillance and mosquito control efforts not only today, but also […]

Social-Ecological Factors Drive Dengue and Mosquito Presence in the Galapagos

Posted on March 8, 2019

GAINESVILLE, FL – With its turquoise waters and abundant wildlife, Ecuador’s Galapagos Islands have long been a vacation dream of many. Tourist guides highlight playful sea lions and giant tortoises, but they do not talk about the mosquitoes. For the more than 30,000 people who live there, emerging epidemics of mosquito-borne disease such as dengue, […]

Emily Stone receives Emerging Scholars Award from the UF Center for Undergraduate Research

Posted on February 26, 2019

Congratulations to Emily Stone, recipient of an Emerging Scholars Award from the University of Florida’s Center for Undergraduate Research! The Emerging Scholars program supports early undergraduate students who are interested in adding a research experience to their curriculum. The award provides two semesters of support to work on a research project with a UF faculty […]

Geography Grad student receives best PhD paper at the 2018 SEDAAG annual meeting!

Posted on December 5, 2018

Second-year PhD student Stephanie Mundis of the Quantitative Disease Ecology & Conservation Lab, advised by Dr. Sadie Ryan, was recognized for her paper and presentation at the 2018 SouthEastern Division of the American Association of Geographers. Her presentation, “Spatial analysis of pyrethroid resistance genotypes in Aedes aegypti mosquitoes in Florida,” focused on spatial patterns in […]

Women in Science on Ada Lovelace Day

Posted on October 9, 2018

In observation of Ada Lovelace Day (9 October), the ZSL journal Animal Conservation asked their female editors to reflect on what inspired them to become scientists. UF’s Dr. Sadie Ryan had this to say: What inspired you to pursue a career in science?

Temperature explains broad patterns of Ross River virus transmission

Posted on August 28, 2018

RYAN – Temperature explains broad patterns of Ross River virus transmission Marta Strecker Shocket, Sadie J Ryan, Erin A Mordecai Article first published online: 28 AUG 2018 eLife DOI: 10.7554/eLife.37762.001 ABSTRACT: Thermal biology predicts that vector-borne disease transmission peaks at intermediate temperatures and declines at high and low temperatures. However, thermal optima and limits remain […]

Temperature model predicts regional and seasonal virus transmission by mosquitoes

Posted on August 28, 2018

GAINESVILLE, FL – New model that accurately predicts patterns of mosquito-borne Ross River virus epidemics could help prepare for the impact of climate change. Scientists have built a model that predicts how temperature affects the spread of Ross River virus, a common mosquito-borne virus in Australia, according to a report in the journal eLife. The […]

Conservation Conundrum and Amphibian Disease

Posted on August 20, 2018

GAINESVILLE, FL – Amidst global amphibian population collapses, ranavirus causes up to 90% mortality in amphibians, undermining conservation efforts and wetland. restoration projects. In a recent study University of Florida Medical Geography researchers identified important variables to measure in assessments of ranaviral infection risk in newly constructed ponds which are important components of wetland restoration. […]

Temperature drives Zika virus transmission: evidence from empirical and mathematical models

Posted on August 15, 2018

RYAN – Temperature drives Zika virus transmission: evidence from empirical and mathematical models Blanka Tesla, Leah R. Demakovsky, Erin A. Mordecai, Sadie J. Ryan, Matthew H. Bonds, Calistus N. Ngonghala, Melinda A. Brindley, Courtney C. Murdock Article first published online: 15 AUG 2018 Proceedings of the Royal Society B DOI: 10.1098/rspb.2018.0795 ABSTRACT: Temperature is a […]

UF Researchers Refine Zika Transmission Models

Posted on August 15, 2018

GAINESVILLE, FL – A University of Florida Medical Geography researcher recently participated in a study that found that current estimates of Zika virus transmission vastly over predict its possible range. Temperature is a major driver of vector-borne disease transmission, but current transmission models rely on untested assumptions about life history of Zika infected Aedes aegypti […]

Environmental Drivers of Ranavirus in Free-Living Amphibians in Constructed Ponds

Posted on August 9, 2018

RYAN, BOERSCH-SUPAN – Environmental Drivers of Ranavirus in Free-Living Amphibians in Constructed Ponds Tess E. Youker-Smith, Philipp H. Boersch-Supan, Christopher M. Whipps, Sadie J. Ryan Article first published online: 09 AUG 2018 EcoHealth DOI: 10.1007/s10393-018-1350-5 ABSTRACT: Amphibian ranaviruses occur globally, but we are only beginning to understand mechanisms for emergence. Ranaviruses are aquatic pathogens which […]

Nonlinear and delayed impacts of climate on dengue risk in Barbados: A modelling study

Posted on July 17, 2018

LIPPI, RYAN – Nonlinear and delayed impacts of climate on dengue risk in Barbados: A modelling study Rachel Lowe, Antonio Gasparrini, Cédric J. Van Meerbeeck, Catherine A. Lippi, Roché Mahon, Adrian R. Trotman, Leslie Rollock, Avery Q. J. Hinds, Sadie J. Ryan, Anna M. Stewart-Ibarra Article first published online: 17 JUL 2018 PLOS Medicine DOI: […]

UF Researchers Make New Strides in Predicting Dengue Fever Outbreaks

Posted on July 17, 2018

GAINESVILLE, FL – Medical Geography researchers from the University of Florida recently participated in a study that successfully predicted dengue fever outbreaks on the Caribbean island of Barbados, using climate data. This paper is part of a special issue of PLOS MEDICINE, focusing on the impacts of climate change on health, and is a result […]

Understanding Long-Term Savanna Vegetation Persistence across Three Drainage Basins in Southern Africa

Posted on June 25, 2018

BUNTING, SOUTHWORTH, HERRERO, RYAN, WAYLEN – Understanding Long-Term Savanna Vegetation Persistence across Three Drainage Basins in Southern Africa Erin L. Bunting , Jane Southworth, Hannah Herrero, Sadie J. Ryan, and Peter Waylen Article first published online: 25 JUN 2018 Remote Sens. 2018, 10(7), 1013 DOI: 10.3390/rs10071013 ABSTRACT: Across savanna landscapes of southern Africa, people are […]

UFGeog at AAG 2018

Posted on March 16, 2018

The UF Geography Department is sending a large contingent to New Orleans for the 2018 meeting of the American Association of Geographers Find out where you can see a GeoGator present their research below: Anthropogenic change to fluvial systems, I Geomorphology Specialty Group, Paleoenvironmental Change Specialty Group, Water Resources Specialty Group 4/10/2018 8:20 AM Balcony […]

Park isolation in anthropogenic landscapes: land change and livelihoods at park boundaries in the African Albertine Rift

Posted on November 14, 2017

DOWHANIUK, GOLDMAN, RYAN – Park isolation in anthropogenic landscapes: land change and livelihoods at park boundaries in the African Albertine Rift Jonathan Salerno, Colin A. Chapman, Jeremy E. Diem, Nicholas Dowhaniuk, Abraham Goldman, Catrina A. MacKenzie, Patrick Aria Omeja, Michael W. Palace, Rafael Reyna-Hurtado, Sadie J. Ryan, Joel Hartter Article first published online: 14 NOV 2017 Regional […]

Dr. Sadie Ryan named 2017 Faculty Fellow of the Florida Climate Institute!

Posted on August 23, 2017

Dr. Sadie Ryan named 2017 Faculty Fellow of the Florida Climate Institute at the University of Florida. The Florida Climate Institute Faculty Fellow award programs recognizes University of Florida faculty who are making outstanding research, extension, or education contributions to these Institutes. The purpose of these awards is to recognize contributions that contribute significantly to […]

New research models temperature-driven Zika, dengue, and chikungunya transmission

Posted on May 10, 2017

GAINESVILLE, FL – New research co-authored by UF Geography’s Dr. Sadie Ryan and Ms. Cat Lippi sheds light on the climate suitability for Aedes aegypti and Aedes albopictus mosquitos and transmission rates of Zika, chikungunya, and dengue fever. The study, published in PLOS Neglected Tropical Diseases compares new data driven models of Zika, chikungunya, and dengue […]

MedGeo Faculty to Lead New CDC Center For Excellence in Vector-Borne Disease

Posted on January 4, 2017

GAINESVILLE – With a $10 million grant from the Centers for Disease Control and Prevention, the University of Florida will lead a highly collaborative research program focused on stopping vector-borne diseases such as Zika before they spread farther into the United States. Key leadership for the Southeast Regional Center of Excellence in Vector-Borne Disease will […]

Detection of an FV3-like Ranavirus in Wood Frogs (Lithobates sylvaticus) and Green Frogs (Lithobates clamitans) in a Constructed Vernal Pool Network in Central New York State

Posted on December 19, 2016

RYAN – Detection of an FV3-like Ranavirus in Wood Frogs (Lithobates sylvaticus) and Green Frogs (Lithobates clamitans) in a Constructed Vernal Pool Network in Central New York State TESS E. YOUKER-SMITH, CHRISTOPHER M. WHIPPS, SADIE J. RYAN Article first published online: 19 DEC 2016 Herpetological Review SUMMARY: As the US Northeast experienced reforestation over the past decades, recovering […]

Spring Course: GEO3454 Peoples and Plagues

Posted on November 10, 2016

The world’s population will reach 8 billion by 2023. One third of the world is TB positive; 300-500 million have malaria; more than 30 million live with HIV/AIDS. Multi-drug resistance in urban settings, climate change, and disease-related mortality are going to impact your near future.

deBInfer: Bayesian inference for dynamical models of biological systems in R

Posted on November 8, 2016

BOERSCH-SUPAN, RYAN – deBInfer: Bayesian inference for dynamical models of biological systems in R Philipp H. Boersch-Supan, Sadie J. Ryan, Leah R. Johnson Article first published online: 15 OCT 2016 Methods in Ecology and Evolution DOI: 10.1111/2041-210X.12679 ABSTRACT: 1.Understanding the mechanisms underlying biological systems, and ultimately, predicting their behaviours in a changing environment requires overcoming the […]

Farewell to summer MedGeo researcher

Posted on August 19, 2016

This summer, Geography’s Ryan Lab and the Emerging Pathogens Institute were proud to host Lauren Fregosi as a summer research intern working on Dr. Sadie Ryan‘s National Science Foundation’s Ecology and Evolution of Infectious Diseases (NSF EEID) grant. The internship, which was offered through the NSF Research Experience for Undergraduates (REU) program, was focused on modelling approaches […]

Reference and Baseline Hematocrit Measures for the Threatened New England Cottontail (Sylvilagus transitionalis) and Comparison with Sympatric Eastern Cottontail (Sylvilagus floridanus) Rabbits

Posted on August 2, 2016

RYAN – Reference and Baseline Hematocrit Measures for the Threatened New England Cottontail (Sylvilagus transitionalis) and Comparison with Sympatric Eastern Cottontail (Sylvilagus floridanus) Rabbits S. J. Ryan , E. J. Gavard , A. E. Cheeseman , J. B. Cohen , C. M. Whipps Article first published online: 13 JUL 2016 Journal of Zoo and Wildlife Medicine […]

Assessing welfare of captive elephant populations

Posted on July 14, 2016

GAINESVILLE, Florida – A new collection of research articles, jointly edited by Dr. Sadie Ryan and published by PLoS ONE examines the health and well being of captive elephant populations in North American zoos and preserves. This collection is sensitive in nature. While keeping large, socially complex, and long-lived animals, such as elephants, in captivity […]

Knowledge, attitudes, and practices regarding dengue infection among public sector healthcare providers in Machala, Ecuador

Posted on June 1, 2016

RYAN – Knowledge, attitudes, and practices regarding dengue infection among public sector healthcare providers in Machala, Ecuador Andrew S. Handel, Efraín Beltrán Ayala, Mercy J. Borbor-Cordova, Abigail G. Fessler, Julia L. Finkelstein, Roberto Xavier Robalino Espinoza, Sadie J. Ryan and Anna M. Stewart-Ibarra Article first published online: 01 JUN 2016 Tropical Diseases, Travel Medicine and Vaccines DOI: […]

NSF funding UF research on Zika virus

Posted on May 12, 2016

GAINESVILLE, Florida — Dr. Sadie Ryan (Assistant Professor of Medical Geography in the Department of Geography and UF’s Emerging Pathogen Institute) and colleagues, have just received a National Science Foundation (NSF) Division of Environmental Biology’s Ecology and Evolution of Infectious Diseases (EEID) Program rapid response, or RAPID grant to study the socio-ecology and climate responses of Zika virus transmission […]

African farmers contend with baboons when the big cats are gone

Posted on April 11, 2016

GAINESVILLE, Florida – When large carnivores are removed from an African landscape, local farmers need to adopt complex crop management strategies and be more vigilant about crop-raiding baboons, a new modeling study out of the University of Florida finds. In a healthy protected forest ecosystem, apex predators like lions, cheetahs, and hyenas, keep the local […]

Geography students receive Champions for Change Award

Posted on April 7, 2016

Two Geography undergraduate students were recognized with the Champions for Change Award at the Earth Day celebration this week. Ms. Paula Roetscher (double major in Geography and Sustainability Studies and a minor in Arabic Language and Literature) and Mr. Tyler James (major in Psychology, minor in Geography) both received the award for their research and advocacy work. The Champions […]

Perceptions of risk in communities near parks in an African biodiversity hotspot

Posted on March 28, 2016

RYAN – Perceptions of risk in communities near parks in an African biodiversity hotspot Joel Hartter, Nicholas Dowhaniuk, Catrina A. MacKenzie, Sadie J. Ryan, Jeremy E. Diem, Michael W. Palace, Colin A. Chapman Article first published online: 28 MAR 2016 Ambio DOI: 10.1007/s13280-016-0775-8 ABSTRACT: Understanding conservation and livelihood threats in park landscapes is important to informing conservation […]

Job Announcement: Health and Social Change in Africa

Posted on January 8, 2016

The University of Florida is looking for a new faculty member in the area of ‘Health and Social Change in Africa’. This preeminence position is for exceptional candidates at the Assistant level, or Associate or Full Professors. This position would be in the College of Liberal Arts and Sciences (CLAS) which is home to many departments, […]

Women in STEM is strong in Geography!

Posted on December 17, 2015

With climate change, malaria risk in Africa shifts, grows

Posted on November 24, 2015

GAINESVILLE, Fla. – A larger portion of Africa is currently at high risk for malaria transmission than previously predicted, according to a new University of Florida mapping study. Under future climate regimes, the area where the disease can be transmitted most easily will shrink, but the total transmission zone will expand and move into new […]

Mapping Physiological Suitability Limits for Malaria in Africa Under Climate Change

Posted on November 18, 2015

RYAN – Mapping Physiological Suitability Limits for Malaria in Africa Under Climate Change Ryan Sadie J., McNally Amy, Johnson Leah R., Mordecai Erin A., Ben-Horin Tal, Paaijmans Krijn, and Lafferty Kevin Article first published online: 18 Nov 2015 Vector-Borne and Zoonotic Diseases DOI: 10.1089/vbz.2015.1822 ABSTRACT: We mapped current and future temperature suitability for malaria transmission in Africa […]

How does a mosquito in Ecuador affect people around the world?

Posted on November 14, 2015

Geography’s Dr. Sadie Ryan‘s NSF funded research in Ecuador was recently profiled for part of UF’s GatorGood initiative. Dr. Ryan’s work is focused on the impact of climate gradients on malaria, dengue fever, and cholera in Ecuador. Find out more about the far-reaching effects if Dr. Ryan’s work and learn how you can help contribute to the […]

Tyler James at Undergraduate Research Symposium

Posted on November 3, 2015

Tyler James is an undergraduate UF Scholar in Geography with Dr Sadie J. Ryan. On October 26th, he presented a poster on the the first of his projects at the UF Fall Undergraduate Research Symposium: James, T., and Ryan, S.J. STI knowledge in college students: Identifying targets for safer sex education. Extract of Introduction: In […]

Spring Course: GEO3930 Peoples and Plagues

Posted on November 2, 2015

During this course, the world’s population will reach 7.4 billion. One third will be TB positive; 300-500 million will have malaria; more than 35 million will live with HIV/AIDS. Multi-drug resistance in urban settings, climate change, and disease-related mortality are going to impact your near future.

How Mosquitoes Die Matters for Malaria Control

Posted on September 30, 2015

GAINESVILLE, Florida –A new study out of the University of Florida calls for caution in estimating the impact of mosquito control on malaria and other vector-borne disease transmission. Public health officials make prevention and treatment decisions based on models of the impact of interventions. For vector-borne diseases like malaria, these models are based on mosquito […]

Changes in vegetation persistence across global savanna landscapes, 1982–2010

Posted on August 14, 2015

SOUTHWORTH, BUNTING, RYAN, HERRERO, WAYLEN – Changes in vegetation persistence across global savanna landscapes, 1982–2010 J. Southworth, L. Zhu, E. Bunting, S.J. Ryan, H. Herrero, P.R. Waylen & M.J. Hill Article first published online: 14 Aug 2015 Journal of Land Use Science DOI: 10.1080/1747423X.2015.1071439 ABSTRACT: We present a global analysis of the changing face of […]

Household level influences on fragmentation in an African park landscape

Posted on February 27, 2015

RYAN, SOUTHWORTH, HARTTER – The process of landscape fragmentation outside park borders occurs through the actions of people living near the boundaries. In the Kibale National Park landscape in Uganda Authors: Dr. Sadie Ryan, Dr. Jane Southworth, Dr. Joel Hartter, Nicholas Dowhaniuk, Rebecca Fuda and Dr. Jeremy Diem. Publication information: Applied Geography 2015, Vol. 58 pp. […]