Factors related to amphibian occurrence and abundance in headwater streams draining second-growth Douglas-fir forests in southwestern Washington

Wilkins, R. Neal; Peterson, N. Phil

doi:10.1016/s0378-1127(99)00336-9

Cited by 70 publications

(92 citation statements)

References 14 publications

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“…Stream amphibians use the interstitial spaces between rocks in a streambed to lay eggs, forage, and hide. Stream amphibians in the Pacific Northwest decrease in abundance with increasing inputs of fine sediments after logging (Corn and Bury, 1989;Welsh and Ollivier, 1998;Wilkins and Peterson, 2000;Adams and Bury, 2002). Similarly, the spring salamander (Gyrinophyilus porphoryticus) is associated with low sediment levels in New Hampshire (Lowe and Bolger 2002).…”

Section: Sedimentation and Substrate Compositionmentioning

confidence: 99%

Fire and amphibians in North America

Pilliod

Bury²,

Hyde³

et al. 2003

Forest Ecology and Management

151

139

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Information on amphibian responses to fire and fuel reduction practices is critically needed due to potential declines of species and the prevalence of new, more intensive fire management practices in North American forests. The goals of this review are to summarize the known and potential effects of fire and fuels management on amphibians and their aquatic habitats, and to identify information gaps to help direct future scientific research. Amphibians as a group are taxonomically and ecologically diverse; in turn, responses to fire and associated habitat alteration are expected to vary widely among species and among geographic regions.Available data suggest that amphibian responses to fire are spatially and temporally variable and incompletely understood. Much of the limited research has addressed short-term (1-3 yr) effects of prescribed fire on terrestrial life stages of amphibians in the southeastern United States.Information on the long-term negative effects of fire on amphibians and the importance of fire for maintaining amphibian communities is sparse for the high number of taxa in North America.Given the size and severity of recent wildland fires and the national effort to reduce fuels on federal lands, future studies are particularly needed to examine the effects of these landscape disturbances on amphibians. We encourage studies to address population-level responses of amphibians to fire by examining how different life stages are affected by changes in aquatic, riparian, and upland habitats. Research designs need to be rigorous and credible, yet provide information that is relevant for fire managers and those responsible for assessing the potential effects of various fuels reduction alternatives on rare, sensitive, and endangered amphibian species.

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Section: Sedimentation and Substrate Compositionmentioning

confidence: 99%

Fire and amphibians in North America

Pilliod

Bury²,

Hyde³

et al. 2003

Forest Ecology and Management

151

139

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“…Torrent salamander occupancy has been shown to increase as stream gradient increases and basin size decreases, generally increasing occupancy rates moving towards headwater streams (Wilkins and Peterson, 2000). Site 3, where the torrent salamanders were found, is one of the lowest order streams with the highest gradients included in the study, suggesting that it might be on the very edge of the habitat range for torrent salamanders in the area.…”

Section: Columbia Torrent Salamandersmentioning

confidence: 95%

“…Amphibians span aquatic and terrestrial habitats throughout the stream system and are linked across food webs as both predator and prey (Oregon Forest Resources Institute, 2009). SAA, or stream breeding amphibians, are particularly sensitive to environmental change and may be negatively impacted by habitat changes resulting from human disturbance (Wilkins and Peterson, 2000). Many SAA larvae are highly specialized in their use of lotic habitats for both foraging and cover, making them susceptible to minor environmental changes (Welsh and Ollivier, 1998).…”

Section: Introductionmentioning

confidence: 99%

Evaluating the Effects of Road Crossing Structures on Stream-Associated Amphibians in the Wilson River Watershed, Tillamook State Forest, Oregon

Twitchell

2000

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As replacement and removal of undersized culverts gains momentum as an effective technique for restoring natural stream flows and removing fish passage barriers, it is important to evaluate the benefits of these efforts on the in-stream and adjacent riparian habitat for other species of potential concern. This study compares stream-associated amphibian (SAA) occurrence in streams adjacent to different road crossing structures on Results showed that coastal tailed frog occupancy was positively associated with dissolved oxygen and crayfish presence, negatively associated with longitude, and had a slight quadratic relationship to channel confinement. Because all sites were highly saturated with oxygen, percent dissolved oxygen was likely a surrogate for one or more other covariates, such as in-stream habitat or substrate size. Detection rates of Pacific giant salamander were too high and detection rates of Columbia torrent salamander were too low to provide reliable models, but they did provide some insight into the factors affecting occupancy in the study area, including information about their interactions with road crossing structures. Occupancy rates of Pacific giant salamanders in the study area appear to be unaffected by road crossings, fish passable or otherwise. Conversely, torrent ii salamanders seemed to be mostly absent from the study sites altogether, but based on the one stream where they were detected, they are not excluded from occupying fish barrier culvert sites.Top weighted habitat covariates, including dissolved oxygen, channel confinement, crayfish and fish presence, and flow constriction are all indicators of disturbance that can be linked to road crossings. Although the size and structure of road crossings did not prove to significantly influence SAA occupancy, indicators of stream disturbance that can be related to road crossings were included in the best models for predicting occupancy, demonstrating the importance of reducing disturbance related to road crossings on streams.iii

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“…Salamanders in streams are frequently associated with increased habitat complexity from instream woody debris and other aquatic cover [30,89]. During brief dry spells, red-backed salamanders (Plethodon cinereus) will retreat to seek cover under rocks or logs [67].…”

Section: Leaf Litter and Woody Debrismentioning

confidence: 99%

Environmental and Anthropogenic Factors Influencing Salamanders in Riparian Forests: A Review

Clipp

Anderson

2014

Forests

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Salamanders and riparian forests are intimately interconnected. Salamanders are integral to ecosystem functions, contributing to vertebrate biomass and complex food webs in riparian forests. In turn, these forests are critical ecosystems that perform many environmental services, facilitate high biodiversity and species richness, and provide habitat to salamander populations. Due to the global decline of amphibians, it is important to understand, as thoroughly and holistically as possible, the roles of environmental parameters and the impact of human activities on salamander abundance and diversity in riparian forests. To determine the population responses of salamanders to a variety of environmental factors and anthropogenic activities, we conducted a review of published literature that compared salamander abundance and diversity, and then summarized and synthesized the data into general patterns. We identify stream quality, leaf litter and woody debris, riparian buffer width, and soil characteristics as major environmental factors influencing salamander populations in riparian forests, describe and explain salamander responses to those factors, and discuss the effects of anthropogenic activities such as timber harvest, prescribed fires, urbanization, road construction, and habitat fragmentation. This review can assist land and natural resource managers in anticipating the consequences of human activities and preparing strategic conservation plans. OPEN ACCESSForests 2014, 5 2680

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Factors related to amphibian occurrence and abundance in headwater streams draining second-growth Douglas-fir forests in southwestern Washington

Cited by 70 publications

References 14 publications

Fire and amphibians in North America

Fire and amphibians in North America

Evaluating the Effects of Road Crossing Structures on Stream-Associated Amphibians in the Wilson River Watershed, Tillamook State Forest, Oregon

Environmental and Anthropogenic Factors Influencing Salamanders in Riparian Forests: A Review

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