Application of lidar to assess the habitat selection of an endangered small mammal in an estuarine wetland environment

作者：Jason S. Hagani, John Y. Takekawa, Shannon M. Skalos, Michael L. Casazza, Melissa K. Riley, Sarah A. Estrella, Laureen Barthman‐Thompson, Katie Smith, Kevin J. Buffington, Karen M. Thorne · 发表于：Ecology and Evolution · 年份：2024 · DOI：10.1002/ece3.10894 · 被引用次数：5 · 研究领域：Remote Sensing and LiDAR Applications、Forest Ecology and Biodiversity Studies、Species Distribution and Climate Change

Abstract Light detection and ranging (lidar) has emerged as a valuable tool for examining the fine‐scale characteristics of vegetation. However, lidar is rarely used to examine coastal wetland vegetation or the habitat selection of small mammals. Extensive anthropogenic modification has threatened the endemic species in the estuarine wetlands of the California coast, such as the endangered salt marsh harvest mouse ( Reithrodontomys raviventris ; SMHM). A better understanding of SMHM habitat selection could help managers better protect this species. We assessed the ability of airborne topographic lidar imagery in measuring the vegetation structure of SMHM habitats in a coastal wetland with a narrow range of vegetation heights. We also aimed to better understand the role of vegetation structure in habitat selection at different spatial scales. Habitat selection was modeled from data compiled from 15 small mammal trapping grids collected in the highly urbanized San Francisco Estuary in California, USA. Analyses were conducted at three spatial scales: microhabitat (25 m 2 ), mesohabitat (2025 m 2 ), and macrohabitat (~10,000 m 2 ). A suite of structural covariates was derived from raw lidar data to examine vegetation complexity. We found that adding structural covariates to conventional habitat selection variables significantly improved our models. At the microhabitat scale in managed wetlands, SMHM preferred areas with denser and shorter vegetation and selected for proximity to ...