ORIGINAL RESEARCH article
Front. Mar. Sci.
Sec. Marine Conservation and Sustainability
Volume 12 - 2025 | doi: 10.3389/fmars.2025.1602182
Expected occurrence of wildlife in U.S. Atlantic offshore wind areas
Provisionally accepted
- Marine Geospatial Ecology Lab, Duke University, Durham, NC., United States
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Offshore wind energy has entered a pivotal phase of development for the U.S. Atlantic Outer Continental Shelf (OCS), a region that supports critical habitats, migratory corridors and flyways for many marine species. Assessing where and when marine wildlife occurs is a crucial first step in developing a risk assessment framework to evaluate potential risks and impacts of offshore wind development. In this study, we perform this initial assessment by evaluating the expected occurrence of marine mammal, seabird and sea turtle taxa in areas of interest to identify patterns and potential areas of concern. Specifically, this work depicts the expected monthly density of 84 marine species and taxa within each of the 29 active wind energy lease areas plus a 10 km buffer to account for nearby activity. We then compare these densities to subregional thresholds, evaluated as the 90th percentile of the subregion’s monthly density, to provide comparisons across the shelf region. This analysis synthesizes the most recent spatial distribution models of 31 marine mammal taxa (26 species and 5 guilds), 49 seabird species and 4 sea turtle species to provide a unified evaluation of the major marine wildlife in the region. Out of the 84 species and taxa analyzed, 56 exhibit levels of expected density in wind energy areas that exceed the corresponding 90th percentile subregional threshold at some point throughout the year. These results represent an initial assessment in the broader Occurrence, Exposure, Response, and Consequence (OERC) framework, originally developed by the U.S. Navy for marine species risk assessments. These results offer valuable guidance to marine spatial planners, management agencies and offshore wind developers on the expected locations and timing of interaction risk to wildlife species in or near wind energy areas across the region.
Keywords: Offshore wind energy, Wildlife occurrence, Risk Assessment, marine mammals, seabirds, Sea Turtles, U.S. Atlantic coast
Received: 29 Mar 2025; Accepted: 19 May 2025.
Copyright: © 2025 Brill, Cleary, Roberts and Halpin. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Deborah N Brill, Marine Geospatial Ecology Lab, Duke University, Durham, NC., NC 27708, United States
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