Download or read book Response of Amphibians to Partial Cutting in a Coastal Mixed conifer Forest Management Practices for Retaining Amphibian Habitat in the Vancouver Forest Region written by F. M. Louise (Francis M. Louise) Waterhouse and published by Nanaimo : British Columbia Forest Services, Vancouver Forest Region. This book was released on 2001 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Response of Amphibians to Partial Cutting in a Coastal Mixed conifer Forest written by Linda Anne Dupuis and published by . This book was released on 2001 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Special Reference Briefs written by and published by . This book was released on 1983 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Agricultural Conservation Practices on Fish and Wildlife written by and published by . This book was released on 2008 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The bibliography is a guide to recent scientific literature covering effects of agricultural conservation practices on fish and wildlife. The citations listed here provide information on how conservation programs and practices designed to improve fish and wildlife habitat, as well as those intended for other purposes (e.g., water quality improvement), affect various aquatic and terrestrial fauna"--Abstract.
Download or read book Amphibian Decline written by Greg Linder and published by Setac Press. This book was released on 2003 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book examines the ecotoxicology and stressors of amphibians in an attempt to address issues related to declining amphibian populations and the role that various stressors might have in those losses. It identifies gaps in current data, interprets information into an existing framework, and points toward critical areas for future research. Through the combined efforts of research and resource management communities, recommendations can be developed to change current policies and management actions to address the problem of amphibian decline.
Download or read book Terrestrial Amphibian Distribution Habitat Associations and Downed Wood Temperature Profiles in Managed Headwater Forests with Riparian Buffers in the Oregon Coast Range written by Matthew R. Kluber and published by . This book was released on 2008 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: Western forests have become increasingly fragmented landscapes dominated by young stands. Given that western Oregon forests largely consist of headwater systems, there is a need to better understand how headwater forest taxa and their habitats are impacted by forest management practices. Several amphibian species associated with forested headwater systems have emerged as management concerns. Forest management strategies, such as harvests that remove only part of the canopy and retention of riparian buffer strips, may help ameliorate some of the negative effects on amphibians in managed forests. Pre-existing site conditions, such as legacy downed wood, also may play a role in buffering the impacts of silvicultural practices on terrestrial amphibians. Downed wood is an important habitat component for many amphibians, because the cool, moist microclimates of downed wood can provide refugia for terrestrial amphibians during warmer summer months. However, downed wood habitat suitability is another emerging concern as the rate of input and size of downed wood declines in managed forests. As part of the USDI Bureau of Land Managements Density Management Study, we investigated how untreated streamside buffers modify impacts of upland thinning on headwater forest terrestrial amphibians and their habitat at three sites in the Oregon Coast Range. To further assess habitat associations of these animals, we conducted a field experiment to address amphibian cover use, including downed wood, moss and coarse and fine substrates. In addition, we examined how temperature profiles inside small- and large-diameter downed wood and soil temperatures differed from ambient air temperatures. Temperatures of wood and soil were monitored at different slope positions (near streams and upslope) and overstory regimes (thinned and unthinned stands) to assess potential habitat suitability and buffering capabilities against seasonal temperature extremes for plethodontid salamanders. Our results suggest that pre-existing site conditions (e.g., amount of rocky or fine substrate) play an important role in determining the response of terrestrial amphibians to upland forest thinning. However, retention of stream buffers is important in maintaining unaltered stream and riparian conditions. Moderate thinning and preservation of vital habitat in riparian and nearby upland areas by way of variable-width buffers (15 m minimum width) may be sufficient in maintaining suitable habitat and microclimatic conditions vital to amphibian assemblages in managed headwater forests. Additionally, logs of a wide size range and soils may provide sufficient protection against thermal extremes harmful to plethodontid salamanders in thinned stands with limited overstory. However, this alone cannot support plethodontid salamanders. These salamanders require exposed areas (e.g., leaf litter, soil surface, rock faces) where much of their foraging and well as courtship occurs. Partial retention of the canopy through moderate thinning coupled with variable-width riparain buffers that may increase in width when suitable terrestrial habitat is encountered, may provide sufficient microhabitat, microclimate, and protection in maintaining terrestrial amphibian assemblages in managed headwater forests.
Download or read book Amphibian Conservation written by Rebecca K. Smith and published by Pelagic Publishing Ltd. This book was released on 2014-05-16 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: Amphibian Conservation is the fourth in the series of Synopses of Conservation Evidence, linked to the online resource www.ConservationEvidence.com. This synopsis is part of the Conservation Evidence project and provides a useful resource for conservationists. It forms part of a series designed to promote a more evidence-based approach to biodiversity conservation. Others in the series include bee, bird, farmland and bat conservation and many others are in preparation. Approximately 32% of the 7,164+ amphibian species are currently threatened with extinction and at least 43% of species are declining. Despite this, until recently amphibians and their conservation had received little attention. Although work is now being carried out to conserve many species, often it is not adequately documented. This book brings together and summarises the available scientific evidence and experience relevant to the practical conservation of amphibians. The authors consulted an international group of amphibian experts and conservationists to produce a thorough summary of what is known, or not known, about the effectiveness of amphibian conservation actions across the world. "The book is packed with literature summaries and citations; a veritable information goldmine for graduate students and researchers. It also admirably provides decision makers with a well-researched resource of proven interventions that can be employed to stem/reverse the decline of amphibian populations." -John G Palis, Bulletin of the Chicago Herpetological Society
Download or read book Influence of Forest Management on Headwater Stream Amphibians at Multiple Spatial Scales written by Margo A. Stoddard and published by . This book was released on 2004 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Amphibian Responses to Forest Management Practices in Southwestern Georgia written by Diane W. Bennett and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: Amphibians (frogs and salamanders) were monitored monthly since December 2002 as part of a study examining the impact of forest harvest and Streamside Management Zone (SMZ) practices. The study encompassed four adjacent subwatersheds of the Dry Creek Watershed at the Southlands Experimental Forest of International Paper, Bainbridge, GA. Two watersheds were left intact, while two were harvested. The SMZ was left intact in the upstream reach of each treatment stream, while in the downstream, 50% of basal area was removed from the SMZ (thinned). Terrestrial salamander numbers were assessed using plywood coverboards at fixed stations throughout the watersheds. Salamander numbers were greatest closer to the streams, within the width covered by the SMZ, and thinning of SMZs did not affect salamander counts. Comparison of concurrent old and new coverboard data for one year suggested that board replacement had an effect on salamander captures, with more encounters occurring under old boards. Treefrog numbers were assessed using PVC pipes driven vertically into the substrate as habitat attractants. Capture likelihood was reduced in harvested areas, as well as thinned SMZs. However, all species of amphibians recorded during the pre-harvest survey period remained present following harvest. This study suggests that current SMZ widths are adequate for maintaining amphibian presence. However, thinning in this region may be inappropriate.
Download or read book Effects of Intensive Forest Management on Amphibians and Reptiles of Vancouver Island Problem Analysis written by British Columbia. Wildlife Branch and published by Research Branch, British Columbia Ministry of Forests,$c1986.. This book was released on 1986 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Problem analysis of the effects of intensive forest management on amphibians and reptiles on Vancouver Island, focussing on management objectives and programs, the problem, status, protection, distribution, habitat requirements, effects, and recommendations for research.
Download or read book The Influence of Forest Management on Headwater Stream Amphibians at Multiple Spatial Scales written by Margo A. Stoddard and published by . This book was released on 2001 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: To effectively manage for biodiversity at broad, ecosystem scales, the influences of habitat structure at multiple spatial scales on vertebrate species must be understood. There are few studies on the broad-scale habitat requirements of stream amphibians despite their importance in streams in forest ecosystems in the Pacific Northwest (PNW) as predators and prey, and potentially as indicators of ecosystem health. In particular, studies on the influence of forest structure at landscape scales on stream amphibians are lacking. I examined stream amphibian-habitat relationships for Pacific giant salamanders (Dicamptodon tenebrosus), larval and metamorphosed tailed frogs (Ascaphus truei), and torrent salamanders (Rhyacotriton spp.) at four spatial scales (2-m sample unit, intermediate, sub-drainage, and drainage). Over two field seasons (1998 and 1999), I captured 1,568 amphibians in 702 sample units in 16 randomly chosen drainages in the Oregon Coast Range. I used an information theoretic approach of analysis to rank sets of a priori candidate models that described habitat relationships at each spatial scale. At the 2-m sample unit scale, all species of interest were negatively associated with fine sediments and were positively associated with either stream width or elevation. At the intermediate spatial scale, Pacific giant salamanders, metamorphosed tailed frogs, and torrent salamanders were positively associated with the presence of a 150-ft. forested band on each side of the stream, and larval tailed frogs were positively associated with the presence of forest>105 years old on at least one side of the stream. At the sub-drainage and drainage scales, all species were positively associated with the proportion of stream length in a sub-drainage or drainage with a 150-ft. forested band on each side of the stream. Heat load index (aspect) was also important for Pacific giant salamanders and larval tailed frogs at the intermediate and sub-drainage scales. Results at all spatial scales suggest that Pacific giant salamanders and larval tailed frogs occur lower in the drainage network, and metamorphosed tailed frogs and torrent salamanders occur higher in the drainage network. This study demonstrates the importance of examining headwater stream amphibian habitat at multiple spatial scales, provides insights on linkages between amphibian responses across spatial scales, and shows that broad-scale variables (e.g., the presence of forested bands or the percentage of stream length with forested bands) can be used to assess management approaches for stream amphibian communities. Geophysical characteristics such as stream aspect may also help identify areas that should not be harvested if protection of amphibian habitat is an objective.
Download or read book Study Designs for Evaluating the Effects of Forestry Activities on Aquatic breeding Amphibians in Terrestrial Forest Habitats of British Columbia written by Davis, T. M. (Theodore M.) and published by British Columbia, Wildlife Branch. This book was released on 1999-01-01 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: Outlines methods for 1) determining the habitat requirements of pond- and stream-breeding amphibians in terrestrial forest habitats in British Columbia, and 2) evaluating the effects of forestry activities on their reproduction, growth, and survival.
Download or read book Wildland Fire in Ecosystems written by and published by . This book was released on 1998 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Intensive Forest Management on Amphibians and Reptiles of Vancouver Island written by K. L. Sadoway and published by . This book was released on 1986 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Silvicultural Edges on Terrestrial Amphibian Abundance and Microclimate in Northwestern California written by Nancy E. Karraker and published by . This book was released on 2002 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effects of Nearshore Forest Thinning on Upland Habitat Use by Pond breeding Amphibians in a Montane Coniferous Forest written by Andrew Holt McIntyre and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Forest thinning removes woody fuels from coniferous forests in a way that mimics historic wildfire regimes by removing mid-story pines and increasing horizontal and vertical spacing. Thinning results in few long-term effects to habitat features required by sensitive amphibians including canopy cover, soil moisture and available cover objects. Though some research suggests minimal effects of thinning to amphibians, few studies have assessed effects to aquatic-breeding amphibians in forests of the Pacific Northwest. We conducted an experimental study evaluating effects of understory thinning on aquatic-adjacent habitat on forest conditions and amphibian movement patterns. Thinning treatments were implemented in 12 plots, alternating with matching controls, in the pine-fir forests surrounding Big Lake, a 10.7 ha ephemeral lake in northern California. We assessed effects of thinning on habitat variables relevant to amphibians and used pitfall traps to assess movement by long-toed salamanders (Ambystoma macrodactyllum), western toads (Anaxyrus boreas), and Pacific chorus frogs (Pseudacris regilla). We investigated associations between amphibian captures and upland habitat conditions and assessed amphibian use of debris piles created during treatments. We predicted metamorphic amphibians would seek cover and shade in control plots, while adults would find migration easier in treated plots. Tree density decreased while woody debris cover showed a moderate increase after treatments. A modest increase in captures of chorus frogs occurred in treatment plots, but no treatment effect was detected for toads or salamanders. Receding surface waters forced salamander larvae to develop and emerge at the eastern end of Big Lake. With a shorter development time, western toads and chorus frogs were able to emerge from the pond before surface waters receded. Salamanders and chorus frogs were captured in areas of high leaf litter and low tree density, suggesting a preference of these species for foraging in lower intensity forests. Foraging diurnally, toads preferred areas offering high levels of canopy cover. Our results suggest moderate understory thinning in forests adjacent to aquatic habitat may show no harmful short-term impacts to pond-breeding amphibians. No amphibians were found under debris piles; future research should survey such piles during different times of year and directly before burning.
Download or read book Wildlife Habitat Management written by Brenda C. McComb and published by CRC Press. This book was released on 2007-06-20 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, conflicts between ecological conservation and economic growth forced a reassessment of the motivations and goals of wildlife and forestry management. Focus shifted from game and commodity management to biodiversity conservation and ecological forestry. Previously separate fields such as forestry, biology, botany, and zoology merged
