University of Florida Department of Geography
The Navi-Gator
OCTOBER 2019, ISSUE 2

So many new and exciting things have happened…
Check out our amazing new grad lab in 1215!
Come visit us in the geography office– lounge around in reclining chairs and grab some new GeoGator merch. We have T-shirts and sweatshirts for sale, along with other complementary goodies.

Now Accepting Applications for 2019 Graduate Student Awards!
* Top Published Student Research Article
* Little Family Student Fellowship Award
* John & Fawn Dunkle Award for Graduate Student Travel
* Evan Coe Award in Medical Geography
* David L. Niddrie Excellence Fund
* Anderson Award for International Travel
Submissions are due by 5 pm on November 15th via email to Crystal: cwilmoth@ufl.edu with award name in the subject header [required

UF Researchers Lead future GIS Project in Ghana on Deforestation and City Growth
Funded by SERVIR!
A team from the University of Florida – including Geography’s Dr. Olivier Walther – has received funding from SERVIR, a joint venture between NASA and the U.S. Agency for International Development for their Linking Deforestation, Urbanization, and Agricultural Expansion for Land-Use Decisions in Ghana project. The team will use Geospatial Information System (GIS) tools to assess deforestation, urbanization, and agricultural expansion to improve land use planning in Ghana.

Colloquium
Upcoming: (Dates TBA)
Dr. Robert McCleery
Dr. Roberta Mendonça De Carvalho
Dr. Robert Walker
Ryan Good
Past:
Dr. Kim Valenta (October 3rd): The Mad Dog Initiative – Identifying and Mitigating Invasive Species Threats in Madagascar
Dr. Bo Yang (October 10th): Drone Mapping for Coastal Seagrass Monitoring and Citizen Science
Dr. Danielle Jake-Schoffman (October 16th): Technology-Based Interventions to Promote Physical Activity and Healthy Eating
Dr. Michael Gavin (October 24th): The Geography and Conservation of Biocultural Diversity
Dr. Seth Cavello (October 31st): Rust Belt Renaissance? The Experience of Refugees from Burma in Buffalo, NY

Kim Valenta (October 3rd): The Mad Dog Initiative – Identifying and Mitigating Invasive Species Threats in Madagascar
Dr. Bo Yang (October 10th): Drone Mapping for Coastal Seagrass Monitoring and Citizen Science
Dr. Danielle Jake-Schoffman (October 16th): Technology-Based Interventions to Promote Physical Activity and Healthy Eating
Dr. Michael Gavin (October 24th): The Geography and Conservation of Biocultural Diversity
Dr. Seth Cavello (October 31st): Rust Belt Renaissance? The Experience of Refugees from Burma in Buffalo, NY

Where Are they now?
Our recent grads have found themselves in some interesting places!
Chia Yu (Charles) Wu, class of 2019, graduated with his Doctorate in Geography. He is currently researching River-Coastal Science and Engineering as a postdoctoral fellow at Tulane University.

Image courtesy Dr. Bo Yang

Drone Mapping for Coastal Seagrass Monitoring and Citizen Science

Speaker: Dr. Bo Yang

Citizen Science GIS, University of Central Florida

Thursday, October 10, 2019

2:50-3:50 PM (Period 8)

Turlington Hall Room 3018

University of Florida

All are welcome to attend.

High quality multi-spectral observations with fine spatial resolution and frequent temporal coverage are indispensable in seagrass monitoring and analyses. An unmanned aerial vehicle (UAV), equipped with a multispectral sensor, affords an opportunity to improve upon satellite imagery for coastal management because of the very high spatial resolution, multispectral capability, and opportunity to collect real-time observations.

This talk will present results of our NSF seagrass drone mapping project. We performed multispectral UAV mapping fieldworks along the west coast of US. The UAV multi-spectral mapping method provided advanced information of the physical, an improved land feature delineation, and a significantly better mapping product than satellite imagery with coarser resolution (figure below). We also incorporated drone training and community outreach into the project with citizen science.

Dr. Meshari Alenezi, Dr. Di Yang, Dr. Jane Southworth, Dr. Hannah Herrero, and Dr. Xavier Haro-Carrión at the 2019 University of Florida Summer Commencement.
Image courtesy Ms. Anni Yang

Multi-scale Modeling for Infectious Disease Transmissions – Exploring two Indirectly Transmitted Pathogens in Southwestern Montana

Speaker: Ms Anni Yang

PhD Candidate, Department of Geography, University of Florida

Thursday, February 7, 2019

2:50-3:50 PM (Period 8)

Turlington Hall Room 3012

University of Florida

All are welcome to attend.

GeoGators Akhil Kshirsagar, Matt McKay, Ryan Good, Audrey Culver Smith, Di Yang at the 2018 Big Pink Volleyball tournament.

Five geography grad students formed a team to play in the Big Pink Volleyball tournament to raise money for Breast Cancer Awareness Month. The GeoGators played two games and finished the playoff round 1-1. We had lots of fun!

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 K, Marriott, 4th Floor
Anthropogenic Disturbances and Sand Bar Size Variations of Coastal Plain Rivers, USA
Joann Mossa

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Geographic research on vector-borne diseases (I)
Health and Medical Geography Specialty Group, Geographic Information Science and Systems Specialty Group, Spatial Analysis and Modeling Specialty Group
4/10/2018
9:00 AM
Lafayette, Marriott, 41st Floor
Using a Network Analysis Framework to Discuss Delivery of Mosquito Abatement Services in Machala, Ecuador
Catherine A Lippi, Liang Mao, Sadie J Ryan

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Anthropogenic change to fluvial systems, II
Geomorphology Specialty Group, Paleoenvironmental Change Specialty Group, Water Resources Specialty Group
4/10/2018
11:20 AM
Room: Balcony K, Marriott, 4th Floor
Riffle-Pool Variability in the Confined Lowermost Mississippi River
Chia-Yu Wu, Joann Mossa

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Applications of Time Series Remote Sensing at the Global to Landscape Scale
4/10/2018
12:40 PM
Grand Chenier, Sheraton, 5th Floor
Examining vegetation changes in Eastern Zambia savanna landscapes from 1984-2016: an integrated approach
Hannah Herrero, Jane Southworth

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Applications of Time Series Remote Sensing at the Global to Landscape Scale
4/10/2018
1:20 PM
Grand Chenier, Sheraton, 5th Floor
Latitudes and land use: global biome shifts in greenness persistence across three decades
Jane Southworth, Sadie J Ryan, Reza Khatami, Peter Waylen, Hannah V Herrero

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Geographic research on vector-borne diseases (III)
Health and Medical Geography Specialty Group, Geographic Information Science and Systems Specialty Group, Spatial Analysis and Modeling Specialty Group
4/10/2018
1:40 PM
Lafayette, Marriott, 41st Floor
The future is uncertain: global shifts in potential distribution and seasonal risk of Aedes-transmitted viruses
Sadie Jane Ryan

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Experiential Learning in Geography Education II
Geography Education Specialty Group
4/10/2018
3:40 PM
Napoleon A1, Sheraton, 3rd Floor
Recruitment and retention in Geosciences through integrated professional and academic experiences
Heidi J. L. Lannon, Corene Matyas

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Geographic research on vector-borne diseases (IV)
Health and Medical Geography Specialty Group, Spatial Analysis and Modeling Specialty Group, Geographic Information Science and Systems Specialty Group
4/10/2018
4:00 PM
Lafayette, Marriott, 41st Floor
Precise space-time interventions on intra-urban dengue outbreaks using large-scale mobile phone tracking data
Liang Mao

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Geographic research on vector-borne diseases (V)
Health and Medical Geography Specialty Group, Geographic Information Science and Systems Specialty Group, Spatial Analysis and Modeling Specialty Group
4/10/2018
5:20 PM
Lafayette, Marriott, 41st Floor
A GIS-based Machine Learning Technique for Predicting Spatial Distribution of Phlebotomus papatasi (Diptera: Psychodidae), the Main Vectors of Zoonotic Cutaneous Leishmaniasis
Abolfazl Mollalo

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Land Change Science
Spatial Analysis and Modeling Specialty Group, Geographic Information Science and Systems Specialty Group, Remote Sensing Specialty Group
4/11/2018
8:20 AM
Maurepas, Sheraton, 3rd Floor
Operational large-area land-cover mapping: Ethiopia case study
Reza Khatami, Jane Southworth, Carly Muir

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Topics in U.S. Regional Geography
Rural Geography Specialty Group
4/11/2018
10:00 AM
Galvez, Marriott, 5th Floor
Changing Economic Geography of Southern New England’s “Tobacco Valley”: Surviving in the 21st Century
Matthew McKay

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High-Level Perspectives: NSF, Geosciences, Big Ideas, and Geography
4/11/2018
11:50 AM – 1:10 PM
Bayside C, Sheraton, 4th Floor
This session will feature comments from William Easterling, who currently serves as the Assistant Director for Geosciences at the National Science Foundation. On assignment from positions as a professor and dean at Pennsylvania State University, Easterling is the first geographer to serve in the second-highest level of officials at NSF. His comments will touch on issues related to NSF that geographers will find of interest, including federal support for basic research; major emphases for NSF, the NSF Big Ideas, and opportunities for geographers in the Directorate for Geosciences. Other geographers currently at NSF will serve as discussants and provide complementary perspectives from their divisions in the Biological Sciences and Social, Behavioral, and Economic Sciences directorates. Overall, this special session is designed to provide attendees with new perspectives regarding trends, opportunities, and issues at NSF.
Michael Binford

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Environmental Geography
4/11/2018
1:40 PM
Balcony N, Marriott, 4th Floor
Morphometric differences between megafans and alluvial fans
M. Anwar Sounny-Slitine

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Spatial Demography
Population Specialty Group
4/11/2018
6:40 PM
Studio 4, Marriott, 2nd Floor
Spatially explicit age segregation index and self-rated health of older adults in U.S. cities
Guangran Deng, Liang Mao

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Hurricanes I: Climatology/meteorology
4/12/2018
9:00 AM
Napoleon D1, Sheraton 3rd Floor
Spatial characteristics of rain fields associated with tropical cyclones landfalling over the western Gulf of Mexico and Caribbean Sea
Yao Zhou, Corene Matyas

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Geographies of health and health care V: Spatial and temporal analysis
Health and Medical Geography Specialty Group
4/12/2018
1:20 PM
Estherwood, Sheraton, 4th Floor
Understanding temporal changes of access to healthcare: an analytic framework for local factor impacts
Jue Yang, Liang Mao

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Regional evolutionary economic geography approaches to destination evolution
Recreation, Tourism, and Sport Specialty Group
4/12/2018
1:20 PM – 3:00 PM
Mid-City, Sheraton, 8th Floor
A Comparative Assessment of Tourism Development of Zambian National Parks to those in the South African Region
Brian Child

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Physical Geography Poster Session II
4/12/2018
1:20 PM – 3:00 PM
Napoleon Foyer/Common St. Corridor, Sheraton, 3rd Floor
Accessibility to hurricane shelters for Airbnb users in Miami metropolitan area
Sanghoon Kim

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Development, Geospatial Technologies and Spatial Organization in Africa
Africa Specialty Group
4/12/2018
4:00 PM
Gallier A, Sheraton, 4th Floor
Vegetation Persistence and Change in Ethiopia as a Function of Climate
Carly Muir, Jane Southworth, Reza Khatami

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Preparing Competitive Research Grants in Biogeography
Biogeography Specialty Group, Careers and Professional Development
4/12/2018
5:20 PM – 7:00 PM
Studio 1, Marriott, 2nd Floor
This panel, organized by and for biogeographers but open to all, aims to review and discuss the ins and outs of preparing competitive research grants. Discussion topics will range from where, how, and why to successfully seek external funding for biogeographic research, NSF broader impacts and intellectual merit, lesser-known sources of funding, what to do when the big plans fall through, and much more. The panel features panelists from various career stages and areas of expertise.
Michael Binford

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Geographies of Climate Change Mitigation: Marketization, Financialization, and Decarbonization 1
Economic Geography Specialty Group, Cultural and Political Ecology Specialty Group
4/13/2018
8:40 AM
Grand Ballroom D, Sheraton, 5th Floor
Tropical Africa and the Political Economy of Climate Change Mitigation
Abe Goldman

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Landscape Speciality Group-Student Presentation Competition II
Landscape Specialty Group
4/13/2018
10:40 AM
Estherwood, Sheraton, 4th Floor
A landscape level analysis of urbanization, lake level change and community impacts in Mwanza Gulf, Tanzania
Ryan Good, Jane Southworth

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Wetlands and Meadows: Integrated Research in Geomorphology, Soils, Hydrology, Biogeography and Microclimatology
Biogeography Specialty Group, Climate Specialty Group, Geomorphology Specialty Group
4/13/2018
3:40 PM
Astor Ballroom I, Astor, 2nd Floor
Predicting the Potential Geographic Distributions of Non-Native Fishes in Florida with Climate Change
Joseph A. Andreoli

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Tropical Conservation, Development & Agriculture Short Papers
Cultural and Political Ecology Specialty Group, Geographies of Food and Agriculture Specialty Group, Graduate Student Affinity Group
4/13/2018
5:53 PM
Rampart, Sheraton, 5th Floor
Climate, Food Insecurity and Under-five Stunting in Zambia
Audrey Smith

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Tropical Conservation, Development & Agriculture Short Papers
Cultural and Political Ecology Specialty Group, Geographies of Food and Agriculture Specialty Group, Graduate Student Affinity Group
4/13/2018
5:53 PM
Rampart, Sheraton, 5th Floor
Situational Analysis of Mangalane, Mozambique in the context of a Community Based Natural Resource Management Project
Leandra Merz

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Health (Workforce) Geography
Geographic Information Science and Systems Specialty Group, Spatial Analysis and Modeling Specialty Group, Health and Medical Geography Specialty Group
4/14/2018
8:00 AM
Oak Alley, Sheraton, 4th Floor
Mapping rural–urban disparities in late-stage cancer with space-time rurality index and GWR
Liang Mao, Jue Yang, Guangran Deng

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Analyzing movement data using GIS: Lagrangian and Eulerian perspectives
Geographic Information Science and Systems Specialty Group, Spatial Analysis and Modeling Specialty Group
4/14/2018
4:00 PM – 5:40 PM
Napoleon B2, Sheraton 3rd Floor
Living la Vida T-LoCoH: Site fidelity amongst Florida wild and captive white-tailed deer (Odocoileus virginianus) during the epizootic hemorrhagic disease virus (EHDV) transmission period
Emily Dinh, Jeremy P. Orange, Jason K. Blackburn

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Analyzing space and time in the African environments
4/14/2018
5:20 PM
Grand Ballroom D, Astor, 2nd Floor
Time Series Analysis of Vegetation Change and Changes in Persistence Analyses in Umfolozi-Hluhluwe Park 2001-2016
Meshari Alenezi

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Health and Hazards
Type: Paper
4/13/2018
6:00 PM
Napoleon B2, Sheraton 3rd Floor
Effects of Brucellosis Serological Status on Physiological Conditions and Behavioral Mechanisms of Southwestern Montana Elk
Anni Yang, Jason Blackburn

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Health and Hazards
Type: Paper
4/13/2018
6:40 PM
Napoleon B2, Sheraton 3rd Floor
Inferring processes from dynamic abundance time series
Jason Blackburn

YANG – Interpolation of Groundwater Depth based on Data Assimilation

MA Huan, YUE Depeng, YANG Di, YU Qiang, ZHANG Qibin, HUANG Yuan

Article first published online: 27 APR 2017 Transactions of the Chinese Society of Agricultural Machinery (in English)

DOI: 10.6041/j.issn.1000-1298.2017.04.027

ABSTRACT: Groundwater monitoring is limited by practical conditions, and only limited monitoring results can be obtained when it is observed. As a kind of geostatistical interpolation method, cooperative Kriging (co-Kriging) method can effectively represent the transformation of discrete point-like information to planar continuous information. Dengkou County, a typical county in the arid region of Northwest China, was selected as the study area. The sampled data from 40 groundwater sampling sites in 2015 was selected as the main variable. And this data optimized by EnKF was used as the basic data of co-Kriging interpolation. The evapotranspiration results and NDVI data were selected as the covariates. Co-Kriging interpolation was carried out by using the sampled data from 40 groundwater sampling sites in August, 2015, as the main variable, which were optimized by EnKF, and the evapotranspiration results and NDVI data were used as the covariates. Meanwhile, the results of co Kriging interpolation without using EnKF model and Kriging interpolation optimized by EnKF model were used to verify the accuracy. The results showed that the spatial distribution trend of groundwater depth was basically the same at large scale, the value in the southern desert region was higher, and the spatial distribution showed obvious geography regularity. The most significant improvement was achieved with EnKF model. Based on this improvement, the mean error, root mean square error and mean standard error were all better than those without assimilation, with the mean error of 0.2705m. Compared with the ordinary Kriging interpolation method, co-Kriging model took the synergistic effect of evapotranspiration and NDVI into consideration, and the precision was obviously improved. The mean error was decreased by 0.4097m, the root mean square error was decreased by 0.0784m and the mean standard error was decreased by 1.0167m. This study can provide a scientific basis for spatial visualization simulation and reasonable management of water resources in arid areas.

Read the full publication at Transactions of the Chinese Society of Agricultural Machinery

Explore the ever-changing atmosphere controlling, temperatures, clouds, storms, and variable winds.
Examine Earth’s wealth of intriguing features, from dramatic mountains to intricate coastlines and deep oceans, from lush valleys to deserts.
Investigate the distribution of these environments, the processes that create and change them, and their implications for people and life, and vice-versa.
Think globally, emphasizing interconnections and complex issues underlying complicated problems facing society.
Fulfill Gen. Ed. Physical Science and a prerequisite for many classes in Geography.

Image courtesy Ms. Di Yang

Forest Mosaics – Spatial Forest Management Patterns from Stands to Regional Scales in Southeastern U.S. Coastal Plain and Piedmont

Speaker: Ms. Di Yang

PhD Student, Department of Geography, University of Florida

Thursday, February 9, 2017

3:00-3:50 PM (Period 8)

Turlington Hall Room 3012

University of Florida

All are welcome to attend.

MUELLER, YANGMarket accessibility and hotel prices in the Caribbean: The moderating effect of quality-signaling factors

Yang Yang, Noah J. Mueller, Robertico R. Croes

Article first published online: 21 MAR 2016 Tourism Management

DOI: 10.1016/j.tourman.2016.03.021

ABSTRACT: The purpose of the paper is to investigate the influence of market accessibility on hotel prices and how this influence is moderated by various quality-signaling factors, such as online user ratings, “thumbs up” (recommendation) percentage, hotel class, and chain affiliation. Using a randomized sample of hotels in the Caribbean islands, we employ a three-level mixed-effect linear regression model to investigate the plausible relationship between market accessibility and hotel prices. After controlling for unobserved island-level and hotel-level characteristics, the model indicates that in most periods, low market accessibility (high flight costs) leads to lower hotel prices, and this influence is mitigated by well-established positive reputations as represented by the quality-signaling factors. Our findings imply that hotels should work to increase their reputations to help buffer the impacts of inaccessibility. In an effort to increase market accessibility, one course of action is to reduce airport landing taxes and fees.

Read the full publication at Tourism Management.