Exploring the Role of Conservation Easements in Conserving Biodiversity: A Case Study Using Hoary Bats (Lasiurus Cinereus)

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Environmental Sciences
Physical Sciences and Mathematics
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Tarnowsky, Brynn
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As scientists and conservationists are running out of time to reverse steep declines in biodiversity, great effort has been put toward reducing habitat loss on private lands. Simultaneously, the protection of privately owned lands through conservation easements has become one of the most widely used conservation tools nationwide. However, due to the wide variety in easement motivations and outcomes, it is unclear to what extent easements act as an effective way to conserve biodiversity. This research project is a case study investigating lands preserved through conservation easements in the northeastern United States and their role in habitat conservation by using Hoary bats (Lasiurus cinereus) as an indicator species. Habitat suitability modeling of hoary bat habitat was cross-referenced with conservation easement locations as well as the locations of publicly conserved lands. Primary data collection included the use of a relatively new monitoring technology, Automated Recording Unit devices called AudioMoths, which recorded bats on privately preserved land between August 15 - September 19, 2022. Additional hoary bat species presence data, conservation easement locations, and habitat data were collected from online sources and modeled using Presence-Only Prediction in ArcGIS. This study revealed protected land networks that provide habitat for hoary bats and can inform future conservation decisions to benefit other mammals or birds, especially Species of Greatest Conservation Need. This study also highlighted the need for greater biodiversity monitoring efforts on eased private lands, where access by scientists can be limited and data collection can be challenging. Making data collection easier through the use of inexpensive, easy-to-use devices such as AudioMoth recording units can facilitate monitoring and decrease research barriers. With habitat loss as the main driver of species decline worldwide, private land conservation may be a very effective tool to combat it. Therefore, it is essential to gain a better understanding of how private land conservation currently contributes to biodiversity protection and how it could be improved upon and innovated to offer better protections moving forward.

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2023-01-01
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