Conservation Assessment for the Van Dyke's Salamander ( Plethodon vandykei ) Version 1.0
01 Jan 2014-pp 1-56
About: The article was published on 2014-01-01 and is currently open access. It has received 4 citations till now. The article focuses on the topics: Plethodon vandykei.
Citations
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TL;DR: Amphibians of Western North America By Robert C. Stebbins as discussed by the authors, pp. xvii + 539 (64 plates), p. 56s. 6d.
Abstract: Amphibians of Western North America By Robert C. Stebbins. Pp. xvii + 539 (64 plates). (Berkeley and Los Angeles: University of California Press; London: Cambridge University Press, 1951.) 56s. 6d. net.
48 citations
01 Jan 2018
TL;DR: In this article, the authors focus mostly on terrestrial conditions of species and biodiversity associated with late-successional and old-growth forests in the area of the Northwest Forest Plan (NWFP).
Abstract: This chapter focuses mostly on terrestrial conditions of species and biodiversity associated with late-successional and old-growth forests in the area of the Northwest Forest Plan (NWFP). We do not address the northern spotted owl (Strix occidentalis caurina) or marbled murrelet (Brachyramphus marmoratus)—those species and their habitat needs are covered in chapters 4 and 5, respectively. Also, the NWFP’s Aquatic and Riparian Conservation Strategy and associated fish species are addressed in chapter 7, and early-successional vegetation and other conditions are covered more in chapters 3 and 12.
16 citations
01 Jan 1925
14 citations
01 Jan 1988
TL;DR: Plethodon a. id.yleei was found to be almost entirely nocturnal and had a weak, but significant positive correlation with substrate temperalure as discussed by the authors.
Abstract: Through 1985 and l9B6 activity and diet in a seepage-dwelling population of the Coeur d'Alene salanander lPlethodon wt d.yleei id.ahoensis) were srudied in northwestern Montana. Activity was almost entirely nocturnal and had a weak, but significant positive correlarion {ith nighttine substrate temperalure. During June, July, and August, activity was periodicaily r€duced and had a weal, but significant negative correlation sith daytime subsirate temperature and a strong, negative correlation wifh the number of days since the last rain. Plethodon a. id.ahoensis qas active in fr€e water and aquatic prey species were found in its diet. This salanander erploits very wet nioohabitat where it is insulated from climatic extremes. These habits may have contribured to the continued survival ol P. r. idahoensi in a region thar once bad a nilder climate and appa.ently supporled a richer plelhodontid fauna.
5 citations
References
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Book•
01 Jan 1993
TL;DR: The Fire Ecology of Pacific Northwest Forests as discussed by the authors is a historical, analytical, and ecological approach to the effects and use of fire in Pacific Northwest wildlands, which provides an essential base of knowledge for all others interested in wildland management who wish to understand the ecological effects of fire.
Abstract: It was once widely believed that landscapes become increasingly stable over time until eventually reaching a "climax state" of complete stability. In recent years, however, that idea has been challenged by a new understanding of the importance and inevitability of forces such as storms and fires that keep ecosystems in a state of constant change. The dynamics of fire ecology has emerged as a central feature of the new understanding as scientists and land managers redefine traditional assumptions about the growth and development of ecosystems. Fire Ecology of Pacific Northwest Forests is a historical, analytical, and ecological approach to the effects and use of fire in Pacific Northwest wildlands. James K. Agee, a leading expert in the emerging field of fire ecology, analyzes the ecological role of fire in the creation and maintenance of the natural forests common to most of the western United States. In addition to examining fire from an ecological perspective, he provides insight into its historical and cultural aspects, and also touches on some of the political issues that influence the use and control of fire in the United States. In addition to serving as a sourcebook for natural area managers interested in restoring or maintaining fire regimes in Pacific Northwest wildlands, this volume provides an essential base of knowledge for all others interested in wildland management who wish to understand the ecological effects of fire. Although the chapters on the ecology of specific forest zones focus on the Pacific Northwest, much of the book addresses issues not unique to that region.
2,017 citations
"Conservation Assessment for the Van..." refers background in this paper
...Within the species range, the frequencies of large stand-replacing fires are quite different between the Coastal and Cascade ecoregions, with fire return intervals ranging from decades to centuries (Agee 1993)....
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1,622 citations
"Conservation Assessment for the Van..." refers methods in this paper
...General inventory, monitoring, and research methods can be found in Heyer et al. (1994) and Graeter et al. (2013)....
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TL;DR: Overall, gradients generally were longest and steepest on partially clear, warm, dry days, at southwest-facing edges, and for air temperature, soil temperature, and relative humidity; influence of local weather conditions on gradients was highly variable.
Abstract: Edge is an important landscape feature of fragmented forest landscapes in the Pacific Northwest, USA. Our primary objective of this study is to characterize the changes in microclimatic variables from recent clearcut edges into the old-growth Douglas- fir forests as influenced by edge exposures and local weather conditions. Microclimatic gradients are described along transects extending from recently clearcut edges 240 m into stands of old-growth Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) forest west of the Cascade Range in the U.S. Pacific Northwest. Data for air temperature, soil temperature, relative humidity, short-wave radiation, and wind speed were collected over the course of the day from 16 different edges representing a range of edge orientations and local weather conditions over two growing seasons (1989-1990). Data for soil moisture were collected over three consecutive days in September 1990. Two indices, significance of edge influence (SEI) and depth of edge influence (DEI), were used to evaluate the effects of edges on microclimatic variables. Edge effects typically extended 30 to >240 m into the forest. From the edge into the forest, air temperatures decreased during the day and increased at night; the reversal produced mid-morning and late-afternoon periods when a gradient was absent. Changes in soil temperature from the edge into the forest were comparable to those for air temperature, except that edge effects did not extend as deeply into the forest. The gradient for relative humidity increased from the edge and was steepest in mid-afternoon. Humidity effects sometimes extended >240 m into the forest. Short-wave radiation decreased rapidly with distance from the edge, reaching interior forest levels by 30-60 m. Wind speed de- creased exponentially from the edge into the forest, depending on the relationship of edge orientation to wind direction; stronger winds influenced conditions deeper inside the forest, sometimes >240 m from the edge. Edge orientation played a critical role for all variables; for air and soil temperature and humidity, it affected the times of day at which maximum and minimum values peaked. Influence of local weather conditions on gradients was highly variable. Overall, however, gradients generally were longest and steepest on partially clear, warm, dry days, at southwest-facing edges, and for air temperature, soil temperature, and relative humidity. SEI and DEI were found to be necessary measurements for evaluating edge effects on microclimatic variables, which responded differently depending on time of day, edge orientation, and local weather. No single value could be calculated for DEI. Because many ecological features near edges, such as tree stocking and regeneration, dis- persal of flying insects, and decomposition of woody debris, seem related to microclimatic gradients, forest management to protect interior conditions should shift from the traditional charge ("create as much edge as possible") to a new charge in which the amount of edge is reduced at both the stand and landscape levels.
673 citations
"Conservation Assessment for the Van..." refers background in this paper
...Microclimate edge effects from a clearcut into an intact stand can permeate hundreds of meters (Chen et al. 1995)....
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TL;DR: In this article, climate models used in the Intergovernmental Panel on Climate Change (IPCC) Fourth Assessment Report (AR4) on the whole reproduce the observed seasonal cycle and twentieth century warming trend of 0.8°C (1.5°F) in the Pacific Northwest, and point to much greater warming for the next century.
Abstract: Climate models used in the Intergovernmental Panel on Climate Change (IPCC) Fourth Assessment Report (AR4) on the whole reproduce the observed seasonal cycle and twentieth century warming trend of 0.8°C (1.5°F) in the Pacific Northwest, and point to much greater warming for the next century. These models project increases in annual temperature of, on average, 1.1°C (2.0°F) by the 2020s, 1.8°C (3.2°F) by the 2040s, and 3.0°C (5.3°F) by the 2080s, compared with the average from 1970 to 1999, averaged across all climate models. Rates of warming range from 0.1°C to 0.6°C (0.2°F to 1.0°F) per decade. Projected changes in annual precipitation, averaged over all models, are small (+1% to +2%), but some models project an enhanced seasonal cycle with changes toward wetter autumns and winters and drier summers. Changes in nearshore sea surface temperatures, though smaller than on land, are likely to substantially exceed interannual variability, but coastal upwelling changes little. Rates of twenty-first century sea level rise will depend on poorly known factors like ice sheet instability in Greenland and Antarctica, and could be as low as twentieth century values (20 cm, 8″) or as large as 1.3 m (50″).
572 citations
"Conservation Assessment for the Van..." refers background in this paper
...Regional climate models project rates of warming in the Pacific Northwest of 0.1°C to 0.6°C per decade, with precipitation trends tending toward wetter autumns and winters but drier summers (Mote and Salathe 2010), changes that may affect the Van Dyke’s Salamander in unanticipated ways....
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...decade, with precipitation trends tending toward wetter autumns and winters but drier summers (Mote and Salathe 2010), changes that may affect the Van Dyke’s Salamander in unanticipated ways....
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Book•
01 Jan 1983
466 citations
"Conservation Assessment for the Van..." refers background in this paper
...Different color phases are described based on ground color, which can be black, yellow, or pink (Brodie and Storm 1970; Nussbaum et al. 1983)....
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...The dark phase has a black ground color and yellow or red stripe; the yellow phase is tan or yellow with an indistinct stripe; and similarly, the rose phase is pinkish with an indistinct stripe (Nussbaum et al. 1983)....
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...It has the smallest number of costal grooves (mode = 14), widest head relative to its size, and shortest tail of all western Plethodon (Nussbaum et al. 1983)....
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...However, this view was not immediately accepted (e.g., Nussbaum et al. 1983) because of a small sample size and the lack of phenotypic concurrence....
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...It is likely that courtship occurs in the spring and/or fall, and oviposition occurs in the spring (Nussbaum et al. 1983)....
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