Habitat of the endangered salt marsh harvest mouse (Reithrodontomys raviventris) in San Francisco Bay

Abstract Understanding habitat associations is vital for conservation of at‐risk marsh‐endemic wildlife species, particularly those under threat from sea level rise. We modeled environmental and habitat associations of the marsh‐endemic, Federally endangered salt marsh harvest mouse (Reithrodontomys...

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Autores principales:	Bruce G. Marcot, Isa Woo, Karen M. Thorne, Chase M. Freeman, Glenn R. Guntenspergen
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2020
Materias:	Bayesian network models California vole habitat use Microtus californicus occupancy Reithrodontomys raviventris Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/b601dc4bb6aa470b84d6e8af369d0903
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spelling	oai:doaj.org-article:b601dc4bb6aa470b84d6e8af369d09032021-11-04T13:06:09ZHabitat of the endangered salt marsh harvest mouse (Reithrodontomys raviventris) in San Francisco Bay2045-775810.1002/ece3.5860https://doaj.org/article/b601dc4bb6aa470b84d6e8af369d09032020-01-01T00:00:00Zhttps://doi.org/10.1002/ece3.5860https://doaj.org/toc/2045-7758Abstract Understanding habitat associations is vital for conservation of at‐risk marsh‐endemic wildlife species, particularly those under threat from sea level rise. We modeled environmental and habitat associations of the marsh‐endemic, Federally endangered salt marsh harvest mouse (Reithrodontomys raviventris, RERA) and co‐occurrence with eight associated small mammal species from annual trap data, 1998–2014, in six estuarine marshes in North San Francisco Bay, California. Covariates included microhabitat metrics of elevation and vegetation species and cover; and landscape metrics of latitude–longitude, distance to anthropogenic features, and habitat patch size. The dominant cover was pickleweed (Salicornia pacifica) with 86% mean cover and 37 cm mean height, and bare ground with about 10% mean cover. We tested 38 variants of Bayesian network (BN) models to determine covariates that best account for presence of RERA and of all nine small mammal species. Best models had lowest complexity and highest classification accuracy. Among RERA presence models, three best BN models used covariates of latitude–longitude, distance to paved roads, and habitat patch size, with 0% error of false presence, 20% error of false nonpresence, and 20% overall error. The all‐species presence models suggested that within the pickleweed marsh environment, RERA are mostly habitat generalists. Accounting for presence of other species did not improve prediction of RERA. Habitat attributes compared between RERA and the next most frequently captured species, California vole (Microtus californicus), suggested substantial habitat overlap, with RERA habitat being somewhat higher in marsh elevation, greater in percent cover of the dominant plant species, closer to urban areas, further from agricultural areas, and, perhaps most significant, larger in continuous size of marsh patch. Findings will inform conservation management of the marsh environment for RERA by identifying best microhabitat elements, landscape attributes, and adverse interspecific interactions.Bruce G. MarcotIsa WooKaren M. ThorneChase M. FreemanGlenn R. GuntenspergenWileyarticleBayesian network modelsCalifornia volehabitat useMicrotus californicusoccupancyReithrodontomys raviventrisEcologyQH540-549.5ENEcology and Evolution, Vol 10, Iss 2, Pp 662-677 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Bayesian network models California vole habitat use Microtus californicus occupancy Reithrodontomys raviventris Ecology QH540-549.5
spellingShingle	Bayesian network models California vole habitat use Microtus californicus occupancy Reithrodontomys raviventris Ecology QH540-549.5 Bruce G. Marcot Isa Woo Karen M. Thorne Chase M. Freeman Glenn R. Guntenspergen Habitat of the endangered salt marsh harvest mouse (Reithrodontomys raviventris) in San Francisco Bay
description	Abstract Understanding habitat associations is vital for conservation of at‐risk marsh‐endemic wildlife species, particularly those under threat from sea level rise. We modeled environmental and habitat associations of the marsh‐endemic, Federally endangered salt marsh harvest mouse (Reithrodontomys raviventris, RERA) and co‐occurrence with eight associated small mammal species from annual trap data, 1998–2014, in six estuarine marshes in North San Francisco Bay, California. Covariates included microhabitat metrics of elevation and vegetation species and cover; and landscape metrics of latitude–longitude, distance to anthropogenic features, and habitat patch size. The dominant cover was pickleweed (Salicornia pacifica) with 86% mean cover and 37 cm mean height, and bare ground with about 10% mean cover. We tested 38 variants of Bayesian network (BN) models to determine covariates that best account for presence of RERA and of all nine small mammal species. Best models had lowest complexity and highest classification accuracy. Among RERA presence models, three best BN models used covariates of latitude–longitude, distance to paved roads, and habitat patch size, with 0% error of false presence, 20% error of false nonpresence, and 20% overall error. The all‐species presence models suggested that within the pickleweed marsh environment, RERA are mostly habitat generalists. Accounting for presence of other species did not improve prediction of RERA. Habitat attributes compared between RERA and the next most frequently captured species, California vole (Microtus californicus), suggested substantial habitat overlap, with RERA habitat being somewhat higher in marsh elevation, greater in percent cover of the dominant plant species, closer to urban areas, further from agricultural areas, and, perhaps most significant, larger in continuous size of marsh patch. Findings will inform conservation management of the marsh environment for RERA by identifying best microhabitat elements, landscape attributes, and adverse interspecific interactions.
format	article
author	Bruce G. Marcot Isa Woo Karen M. Thorne Chase M. Freeman Glenn R. Guntenspergen
author_facet	Bruce G. Marcot Isa Woo Karen M. Thorne Chase M. Freeman Glenn R. Guntenspergen
author_sort	Bruce G. Marcot
title	Habitat of the endangered salt marsh harvest mouse (Reithrodontomys raviventris) in San Francisco Bay
title_short	Habitat of the endangered salt marsh harvest mouse (Reithrodontomys raviventris) in San Francisco Bay
title_full	Habitat of the endangered salt marsh harvest mouse (Reithrodontomys raviventris) in San Francisco Bay
title_fullStr	Habitat of the endangered salt marsh harvest mouse (Reithrodontomys raviventris) in San Francisco Bay
title_full_unstemmed	Habitat of the endangered salt marsh harvest mouse (Reithrodontomys raviventris) in San Francisco Bay
title_sort	habitat of the endangered salt marsh harvest mouse (reithrodontomys raviventris) in san francisco bay
publisher	Wiley
publishDate	2020
url	https://doaj.org/article/b601dc4bb6aa470b84d6e8af369d0903
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Habitat of the endangered salt marsh harvest mouse (Reithrodontomys raviventris) in San Francisco Bay

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