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May30

STEM (& Pre-Med/Pre-Health) Virtual Transfer Info Sessions

May 30, 2025, 4:00 - 5:00 PM

online, link provided at registration.

Oct16

American Society for Intercellular Communication (ASIC)

Oct 16, 2025, 12:00 PM - Oct 18, 2025, 2:00 PM

William F. Bolger Center, Potomac, Maryland

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MS Thesis Defense - Environmental Science and Policy

Apr 23, 2025, 3:00 - 4:00 PM

Enterprise Hall Room 418, Fairfax Campus
Virtual option via Zoom. Registration is required prior to meeting.

MS Thesis
Department of Environmental Science and Policy
College of Science
George Mason University

 

Candidate: Jason Motley
Defense Date and Time: April 23, 2025, 3:00-4:00 PM
Defense Location: Enterprise Hall Room 418, Fairfax Campus
Zoom Option: Registration is required prior to the meeting: https://gmu.zoom.us/meeting/register/1b6WE_bMQgKguZLKhs8KZQ

Title: Species Distribution and Habitat Suitability Modeling (SDM/HSM) to Investigate Ecology, Movement, and Distribution of Jefferson Salamander (Ambystoma jeffersonianum) for Potential Vernal Pool Creation

 

Thesis Director: Dr. Thomas Wood
Committee: Dr. Brian Gratwicke, Dr. Esther Peters

 

ABSTRACT

 

Jefferson Salamanders (Ambystoma jeffersonianum) face challenges from habitat loss and climate change. This study employs Species Distribution Models (SDMs) and Habitat Suitability Models (HSMs) using occurrence data from GBIF, iNaturalist, and citizen science programs to identify Appalachian and Blue Ridge regions as critical habitats. Historical comparisons reveal declining occurrences linked to habitat degradation, while vernal pool preferences and co-occurrence patterns with other amphibians were identified. Findings emphasize conserving vernal pools and surrounding forests to ensure survival, offering actionable insights for habitat restoration and biodiversity conservation. This research bridges knowledge gaps and supports efforts to preserve this indicator species.

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