Decline in small mammal species richness in coastal-central California, 1997-2013.

Autor: Ghimirey YP; Department of Wildlife Ecology and Conservation University of Florida Gainesville Florida USA., Tietje WD; Department of Environmental Science, Policy, and Management University of California Berkeley California USA., Polyakov AY; Department of Environmental Science, Policy, and Management University of California Berkeley California USA., Hines JE; United States Geological Survey Eastern Ecological Science Center Laurel Maryland USA., Oli MK; Department of Wildlife Ecology and Conservation University of Florida Gainesville Florida USA.
Jazyk: angličtina
Zdroj: Ecology and evolution [Ecol Evol] 2023 Dec 10; Vol. 13 (12), pp. e10611. Date of Electronic Publication: 2023 Dec 10 (Print Publication: 2023).
DOI: 10.1002/ece3.10611
Abstrakt: The richness and composition of a small mammal community inhabiting semiarid California oak woodland may be changing in response to climate change, but we know little about the causes or consequence of these changes. We applied a capture-mark-recapture model to 17 years (1997-2013) of live trapping data to estimate species-specific abundances. The big-eared woodrat was the most frequently captured species in the area, contributing 58% of total captures. All small mammal populations exhibited seasonal fluctuations, whereas those of the California mouse, brush mouse, and pinyon mouse declined during the study period. We also applied a multispecies dynamic occupancy model to our small mammal detection history data to estimate species richness, occupancy ( ψ ), detection ( p ), local extinction ( ϵ ), and colonization ( γ ) probabilities, and to discern factors affecting these parameters. We found that ψ decreased from 0.369 ± 0.088 in 1997 to 0.248 ± 0.054 in 2013; γ was lower during the dry season (May-September) than the wet season (October-April) and was positively influenced by total seasonal rainfall (slope parameter, β  = 0.859 ± 0.371; 95% CI = 0.132-1.587). Mean mammalian species richness decreased from 11.943 ± 0.461 in 1997 to 7.185 ± 0.425 in 2013. With highly variable climatic patterns expected in the future, especially increased frequency and intensity of droughts, it is important to monitor small mammal communities inhabiting threatened California oak woodlands.
Competing Interests: We have no competing interests.
(© 2023 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.)
Databáze: MEDLINE
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