Movements and Home Range of Brush Mice

Gottesman, Amy B.; Krausman, Paul R.; Morrison, Michael L.; Petryszyn, Yar

doi:10.1894/0038-4909(2004)049<0289:mahrob>2.0.co;2

Cited by 8 publications

(10 citation statements)

References 21 publications

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“…In Monterey County, California, during 2 breeding seasons with population density from 40 to 72 individuals/ha, home ranges (minimum convex polygon; based on radiotelemetry) were 0.13 ha for males (n 5 6) and 0.11 ha for females (n 5 9) in 1997 and 0.15 ha for males (n 5 6) and 0.13 ha for females (n 5 9) in 1998 (KalcounisRueppell 2000). A home-range estimate (minimum convex polygon from radiotelemetry) of 0.12 ha (n 5 20) for P. boylii in Arizona was unaffected by season or sex (Gottesman et al 2004). Male home ranges overlap with multiple females and males, whereas female home ranges show little intrasexual overlap (Ribble and Stanley 1998).…”

Section: Ecologymentioning

confidence: 99%

Peromyscus boylii (Rodentia: Cricetidae)

Kalcounis‐Rueppell¹,

Spoon²

2009

Mammalian Species

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Section: Ecologymentioning

confidence: 99%

Peromyscus boylii (Rodentia: Cricetidae)

Kalcounis‐Rueppell¹,

Spoon²

2009

Mammalian Species

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“…The major threats to the SMHM are habitat loss and alteration of the vegetation zones of San Francisco Bay marshes, as the species has very specific habitat requirements (Geissel et al, 1988; Shellhammer et al, 1988; USFWS, 1984, 2010). Approximately 80% of the SMHM's historic tidal marsh habitats have been destroyed and many of those that remain support few to no mice due to filling, diking, subsidence, changes in water salinity and vegetation, nonnative species invasions, sea‐level rise associated with global climate change, and pollution (Bias & Morrison, 1999; USFWS, 2010). Pesticides are not listed as a threat to the SMHM (USFWS, 2021).…”

Section: Proposed Solutions For Future Assessments: Case Studiesmentioning

confidence: 99%

“…The salt marsh harvest mouse ( Reithrodontomys raviventris , SMHM) is a rodent in the family Muridae (subfamily Sigmodontinae) (USFWS, 2010). The SMHM is endemic to the saline and brackish marsh habitats of San Francisco Bay and its tributaries in the central coast area of California (Bias & Morrison, 1999). The SMHM's primary habitat is pickleweed ( Salicornia virginica )‐dominated vegetation.…”

Section: Proposed Solutions For Future Assessments: Case Studiesmentioning

confidence: 99%

“…The value of pickleweed habitat increases with its depth, density, and degree of intermixing with fat hen ( Chenopodium album ) and alkali heath ( Frankenia salina ) (USFWS, 2021). This type of habitat is preferred because it provides year‐round cover from predators, an escape from flooding, reduced competition with other small mammals, and an important food source, that is, pickleweed (Bias & Morrison, 1999; Fisler, 1965; Geissel et al, 1988). The diet of the SMHM comprises seeds, grasses, leaves, plant stems, forbs, and insects (Brylski, 1999; USFWS, 1984).…”

Section: Proposed Solutions For Future Assessments: Case Studiesmentioning

confidence: 99%

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Challenges with the current methodology for conducting Endangered Species Act risk assessments for pesticides in the United States

Teed

Moore²,

Vukov

et al. 2022

Integr Envir Assess & Manag

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The US Environmental Protection Agency (USEPA or the Agency) is responsible for administering the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA). The Agency is also required to assess the potential risks of pesticides undergoing registration or re‐registration to threatened and endangered (i.e., listed) species to ensure compliance with the Endangered Species Act. To assess potential risks to listed species, a screening‐level risk assessment in the form of a biological evaluation (BE) is undertaken by the Agency for each pesticide. Given the large number of registration actions handled by the USEPA annually, efficient tools for conducting BEs are desirable. However, the “Revised Method” that is the basis for the USEPA's BE process has been ineffective at filtering out listed species and critical habitats that are at de minimis risk to pesticides. In the USEPA's BEs, the Magnitude of Effect Tool (MAGtool) has been used to determine potential risks to listed species that potentially co‐occur with pesticide footprints. The MAGtool is a highly prescriptive, high‐throughput compilation of existing FIFRA screening‐level models with a geospatial interface. The tool has been a significant contributor to risk inflation and ultimately process inefficiency. The ineffectiveness of the tool stems from compounding conservatism, unrealistic and unreasonable assumptions regarding usage, limited application of species‐specific data, lack of consideration of multiple lines of evidence, and inability to integrate higher‐tier data. Here, we briefly describe the MAGtool and the critical deficiencies that impair its effectiveness, thus undermining its intention. Case studies are presented to highlight the deficiencies and solutions are recommended for improving listed species assessments in the future. Integr Environ Assess Manag 2023;19:817–829. © 2022 The Authors. Integrated Environmental Assessment and Management published by Wiley Periodicals LLC on behalf of Society of Environmental Toxicology & Chemistry (SETAC).

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“…The brush mouse ( Peromyscus boylii ) has a wide distribution in the United States, occurring throughout much of the southwest and most of California (Figure 1 ), where it is typically found in mature chaparral, oak woodland, and hardwood‐conifer communities (Baker, 1968 ). As its name suggests, the brush mouse prefers significant amounts of tree cover, dense and shrubby vegetation, rock cover, and logs, which are important habitat structures that provide shelter from weather and predators, as well as nesting sites (Bradley & Schmidly, 1999 ; Brehme et al., 2011 ; Gottesman et al., 2004 ; Kuenzi et al., 1999 ; Morrison et al., 2002 ). The brush mouse plays an important role in ecosystem function as a key prey species for the federally threatened Mexican spotted owl, ( Strix occidentalis lucida ; Boyett, 2001 ).…”

Section: Introductionmentioning

confidence: 99%

Multiple coping strategies maintain stability of a small mammal population in a resource‐restricted environment

Polyakov

Tietje

Srivathsa

et al. 2021

Ecology and Evolution

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In semi‐arid environments, aperiodic rainfall pulses determine plant production and resource availability for higher trophic levels, creating strong bottom‐up regulation. The influence of climatic factors on population vital rates often shapes the dynamics of small mammal populations in such resource‐restricted environments. Using a 21‐year biannual capture–recapture dataset (1993 to 2014), we examined the impacts of climatic factors on the population dynamics of the brush mouse (Peromyscus boylii) in semi‐arid oak woodland of coastal‐central California. We applied Pradel's temporal symmetry model to estimate capture probability (p), apparent survival (φ), recruitment (f), and realized population growth rate (λ) of the brush mouse and examined the effects of temperature, rainfall, and El Niño on these demographic parameters. The population was stable during the study period with a monthly realized population growth rate of 0.993 ± SE 0.032, but growth varied over time from 0.680 ± 0.054 to 1.450 ± 0.083. Monthly survival estimates averaged 0.789 ± 0.005 and monthly recruitment estimates averaged 0.175 ± 0.038. Survival probability and realized population growth rate were positively correlated with rainfall and negatively correlated with temperature. In contrast, recruitment was negatively correlated with rainfall and positively correlated with temperature. Brush mice maintained their population through multiple coping strategies, with high recruitment during warmer and drier periods and higher survival during cooler and wetter conditions. Although climatic change in coastal‐central California will likely favor recruitment over survival, varying strategies may serve as a mechanism by which brush mice maintain resilience in the face of climate change. Our results indicate that rainfall and temperature are both important drivers of brush mouse population dynamics and will play a significant role in predicting the future viability of brush mice under a changing climate.

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Movements and Home Range of Brush Mice

Cited by 8 publications

References 21 publications

Peromyscus boylii (Rodentia: Cricetidae)

Peromyscus boylii (Rodentia: Cricetidae)

Challenges with the current methodology for conducting Endangered Species Act risk assessments for pesticides in the United States

Multiple coping strategies maintain stability of a small mammal population in a resource‐restricted environment

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