Terrestrial Habitat Preferences of Adult Arroyo Southwestern Toads

Griffin, Paul C.; Case, Ted J.

doi:10.2307/3803014

Cited by 19 publications

(19 citation statements)

References 24 publications

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“…The k-1 log-ratios are not constrained to sum to one and can therefore be more readily analysed using standard statistical techniques. (e. g. Aebischer et al 1993;Griffin and Case, 2001).…”

Section: Statistical Analysis Of Humidity Preference Trialsmentioning

confidence: 99%

An experimental study of the relative humidity preference and survival of the Argentine ant, Linepithema humile (Hymenoptera, Formicidae): comparisons with a native Iridomyrmex species in South Australia

Walters

Mackay

2003

Insectes Sociaux

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The Argentine ant, Linepithema humile (Mayr), is a widespread invasive ant species that commonly displaces native ants and other ground-dwelling invertebrates in its introduced range. Previous studies have documented a relationship between the spread of Argentine ants and abiotic conditions (particularly water availability) in invaded areas, suggesting that the invasion success of Argentine ants may be related to specific abiotic factors. This study describes the relative humidity preferences and survival of Argentine ants and a dominant native ant, Iridomyrmex 'rufoniger' sp. group, in the laboratory. In a preference experiment, Argentine ant workers showed a significantly greater propensity than Iridomyrmex to locate themselves in containers with the highest relative humidity. A series of survival trials revealed that the survival of both species was related to the relative humidities within experimental containers. The survival of Argentine ant colonies was reduced in comparison with those of Iridomyrmex sp. after 4 h, however by 24 h both species displayed similar levels of survival in all relative humidity conditions. These findings confirm a relationship between the level of available moisture and the distribution and survival of Argentine ants, and may help to account for the current distribution and invasion success of Argentine ants in Australia. Figure 2. Relative humidity (%) preferences of workers of Argentine ants and Iridomyrmex sp. over 24 h (Silica gel = 7 %, MgCl 2 = 33 %, NaCl = 75 %, KCl = 80 %, K 2 Cr 2 O 7 = > 90 % RH). Error bars show 95 % Confidence Interval of Mean

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“…The k-1 log-ratios are not constrained to sum to one and can therefore be more readily analysed using standard statistical techniques. (e. g. Aebischer et al 1993;Griffin and Case, 2001).…”

Section: Statistical Analysis Of Humidity Preference Trialsmentioning

confidence: 99%

An experimental study of the relative humidity preference and survival of the Argentine ant, Linepithema humile (Hymenoptera, Formicidae): comparisons with a native Iridomyrmex species in South Australia

Walters

Mackay

2003

Insectes Sociaux

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“…We chose these variables based on previous work on habitat relationships, the ecology and physiology of wood frogs and other anurans, and the pilot study. We measured percent cover variables because other species of amphibians selected habitat based on surrounding vegetation and ground structure (e.g., Griffin & Case, 2001), and temperature and moisture variables may be important because of the permeable skin and poikilothermic nature of amphibians (Feder & Burggren, 1992). To assess habitat availability at the weekly activity centre scale, every 6 th day we collected data from 5 random locations within a 26-m-radius circle positioned 50-310 m from the frog location.…”

Section: Habitat Selection Studymentioning

confidence: 99%

A multi-scale assessment of amphibian habitat selection: Wood frog response to timber harvesting

Blomquist¹,

Hunter²

2010

Écoscience

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To understand changes in habitat selection in response to timber harvesting, we used radio-telemetry data from 82 adult wood frogs (Lithobates sylvaticus, formerly Rana sylvatica) and logistic regression modelling to assess habitat selection in response to an unharvested control and 3 forest management techniques: clearcutting (with removal of all merchantable timber > 10 cm diameter), clearcutting with coarse woody debris (CWD) retention, and partial harvesting with retention of ~50% canopy cover. At the home range scale, frogs selected the partially harvested treatment in spring 2005 and avoided the CWD-retained treatment in fall 2006. Frogs spent 5 ± 2 d (mean ± SE) longer in forested treatments than in both clearcut treatments, but certain individuals were able to specialize on the clearcut treatments. At the weekly activity centre scale, the best-supported models indicated that frogs were more likely to occupy locations with more complex ground structure, especially coarse woody debris, warmer temperatures, moister substrates, and greater canopy cover than random. Resource use among frogs overlapped substantially at both the weekly activity centre and daily microhabitat scales. Frogs selected daily microhabitats with more complex ground structure, greater canopy cover, and moister substrates than random. Selection at coarser scales may be mechanistically linked to finer scale resource selection by the physiological processes of thermos and hydro-regulation. Our results support recommendations for minimizing the impact of logging by retaining coarse woody debris in clearcuts and partial harvesting with retention of ~50% canopy cover.

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“…This federally listed endangered species uses common riparian types in southern California for foraging and dispersal, even though dense, tall vegetation structures are least preferred for burrows. Females and breeding season males prefer channel and terrace habitats to campground, agricultural or upland habitats, but males use uplands after breeding season commences (Griffin and Case 2001).…”

Section: Protect and Restore Riparian Areas With Intact Adjacent Uplamentioning

confidence: 99%

“…The federally listed endangered Arroyo Southwestern Toad uses most common riparian types in southern California for foraging and dispersal, and females and breeding season males prefer channel and terrace habitats to campground, agricultural or upland habitats. The natural flooding disturbance regimes that encourage understory vegetation growth and provide habitat for declining bird species also promote continuous availability of preferred breeding habitat for the Arroyo Toad (Griffin and Case 2001).…”

Section: Determine What Habitat and Population Characteristics Are Nementioning

confidence: 99%

Least Bell's Vireo Breeding Records in the Central Valley Following Decades of Extirpation

Howell

Wood

Dettling

et al. 2010

Western North American Naturalist

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Terrestrial Habitat Preferences of Adult Arroyo Southwestern Toads

Cited by 19 publications

References 24 publications

An experimental study of the relative humidity preference and survival of the Argentine ant, Linepithema humile (Hymenoptera, Formicidae): comparisons with a native Iridomyrmex species in South Australia

An experimental study of the relative humidity preference and survival of the Argentine ant, Linepithema humile (Hymenoptera, Formicidae): comparisons with a native Iridomyrmex species in South Australia

A multi-scale assessment of amphibian habitat selection: Wood frog response to timber harvesting

Least Bell's Vireo Breeding Records in the Central Valley Following Decades of Extirpation

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