Ecohydrology Research Group University of South Florida - School of Geosciences

Graduate Students

Edgar Javier Guerrón Orejuela PhD student, Geology

Edgar Javier Guerron Orejuela

I am Ph.D. Candidate at the University of South Florida. My continued passion for understanding and communicating the interrelations between nature and people have allowed me to conduct research geared towards serving different communities in Alaska and Florida by creating shared knowledge of natural and social resources. My research focuses on understanding the influence of hydrological processes on social-ecological systems. I rely on hydrogeologic and remote sensing data and techniques, as well as qualitative methods and co-production of knowledge to develop vulnerability models where physical and social components interact with each other. I am also passionate about sharing my experience and knowledge with others. I enjoy teaching and mentoring undergraduate students, junior graduate students, and members of the community. I aim to make science available and accessible to non-scientific communities, in turn enhancing local community awareness of the challenges they face and their potential solutions to promote stewardship, protection, and management of natural resources.

Research Links and contact
  • The Richard A. Davis Memorial Scholarships- awarded by the USF Geology Alumni Society USF Geology Alumni Society
  • American Geophysical Union - Chapman Conference Travel Award
  • Society of Wetland Scientists Joint Aquatic Sciences Meeting- Best Student Poster
  • University of Florida Water Institute Symposium- Best Student Poster
  • NOAA Margaret A. Davidson Fellowship - View Video
  • USF Geosciences Tharp Research Fellowship

Josephina Reyman MS student, Environmental Science and Policy

Josephina Reyman

My research interest is focused on the restoration and conservation of wetlands. I would like to better understand the impact of development on wetlands and waters in Florida. Currently, I am exploring potential research projects, including wetland storage function in the Tampa Bay Watershed or decision support tools related to wetland management across broader landscapes in Florida. Ultimately, my goal is to provide more data and information to stakeholders, so they can make better informed decisions regarding wetland environments.

Research Links and Contact
  • NSF Water Quality, Sanitation, and Climate Change Research in Ghana IRES
  • NSF S-STEM Managing the Nitrogen Cycle Scholarship S-STEM

Tyelyn Brigino PhD student, Geology

Tyelyn Brigino

My research focuses on increasing the understanding of groundwater support for ecological and human communities. I am interested in using geochemistry as a tool to better understand groundwater as a shared resource between salmon populations and adjacent human users in the Kenai Peninsula Lowlands, Alaska. Specifically, I am investigating how groundwater contributes to aquifer- to-estuary connectivity and the role groundwater plays in augmenting flows, modulating temperatures, and subsidizing nutrients. I aim to engage community members and resource managers in this research to create a shared knowledge informed by local values to inform regional decision-making.

Research Links and Contact
  • USF Delores Auzenne Fellowship- a two year fellowship awarded by the USF Office of Graduate Studies USF Graduate Studies
  • The Craig B. Hutchinson (2022) Memorial Scholarships- awarded by the USF Geology Alumni Society USF Geology Alumni Society
  • Southeastern Geological Society Graduate Award- awarded by the Southeastern Geological Society SEGS
  • Society of Wetland Scientists Multicultural Mentoring Program Award (SWaMMP)- awarded by the Society of Wetland Scientists SWaMP
  • UF Water Institute Symposium Student Diversity Scholarship UF Water Institute
  • Fred L. and Helen M. Tharp Scholarship - awarded by USF Geosciences
  • STEM Scholarship- awarded by the American Association of University Women AAUW
  • NSF S-STEM Managing the Nitrogen Cycle Scholarship S-STEM

Undergraduate Students

Bhaveshsai Reddy B.S student, Environmental Science & Policy

Bhaveshsai Reddy

I am a 2nd year undergraduate student interested in environmental policy and decision making at the University of South Florida. My research interests include wetland hydrology, urban ecology, and a bit of geochemistry with an interest in using GIS and remote sensing as a tool to investigate these areas of interest. As I've gone through my undergraduate years, I've also developed an interest in investigating how policy and public health measures underlie and impact the stakeholders in these scenarios, both human and ecological. Looking forward, I hope to expand my technical skillset and generate a keen understanding of how environmental factors scale up and affect social conditions. By growing my skillset and gaining an understanding of how environmental factors intertwine with social conditions on a larger scale, I hope to contribute meaningfully to informed decision-making processes aimed at fostering sustainable and equitable outcomes.