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Distribution And Redd Site Selection Of The Eastern Brook Trout Salvelinus Fontinalis Within Selected Riparian Habitats Along Church Run Crawford County Pennsylvania
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Book Synopsis Distribution and Redd Site Selection of the Eastern Brook Trout (Salvelinus Fontinalis) Within Selected Riparian Habitats Along Church Run, Crawford County, Pennsylvania by : Ralph D. Heister
Download or read book Distribution and Redd Site Selection of the Eastern Brook Trout (Salvelinus Fontinalis) Within Selected Riparian Habitats Along Church Run, Crawford County, Pennsylvania written by Ralph D. Heister and published by . This book was released on 1995 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Habitat Selection in Brook Trout, Salvelinus Fontinalis by :
Download or read book Habitat Selection in Brook Trout, Salvelinus Fontinalis written by and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Brook Trout (Salvelinus Fontinalis) Spawning Habitat in a Boreal Stream by : Jan Franssen
Download or read book Brook Trout (Salvelinus Fontinalis) Spawning Habitat in a Boreal Stream written by Jan Franssen and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The reproductive success of brook trout (Salvelinus fontinalis) populations, like those of other salmonid species, is dependent on the availability and quality of spawning/incubation habitats. For brook trout in particular substrate composition and groundwater-hyporheic flow characteristics are key abiotic factors influencing both the suitability of lotic spawning habitats and the survival of embryos nested within these habitats. Egg-to-emergence survival has been shown to be negatively related to substrate fine sediment concentrations and positively related to interstitial flow velocity. Both substrate composition (through filtering effects) and interstitial flow are also thought to influence the susceptibility of egg pockets to fine sediment infiltration. The objectives of this doctoral study are to clarify the roles of groundwater and hyporheic flow in brook trout redd site selection; as well as the effect of substrate composition and interstitial flow on...
Book Synopsis Habitat Suitability Index Model for Brook Trout in Streams of the Southern Blue Ridge Province by : Christopher J. Schmitt
Download or read book Habitat Suitability Index Model for Brook Trout in Streams of the Southern Blue Ridge Province written by Christopher J. Schmitt and published by . This book was released on 1993 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Assessing Populations of Eastern Brook Trout (Salvelinus Fontinalis) Above and Below Waterfalls in Mountain Streams of Virginia by :
Download or read book Assessing Populations of Eastern Brook Trout (Salvelinus Fontinalis) Above and Below Waterfalls in Mountain Streams of Virginia written by and published by . This book was released on 2019 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anthropogenically driven factors, such as increasing temperature and sediment in valley streams, acidification of mountain streams, and the introduction of non-native trout, are restricting habitat suitable for healthy populations of eastern brook trout (Salvelinus fontinalis) throughout their native Appalachian range. Brook trout are important as predators of insects in mountain streams and as a favorite of anglers. It is crucial that remaining populations in sustainable habitats be identified and preserved. Waterfalls are geologic knickpoints preventing base-level lowering that create unique, stable landscapes above them, which may alleviate the temperature-productivity/acidity "habitat squeeze" for populations of brook trout and could serve as potentially ideal targets for conservation efforts despite being isolated. This study investigates brook trout occurrence above waterfalls in Virginia and compares brook trout populations found above waterfalls to those below them. One-hundred meter reaches above and below seven waterfalls in Virginia's George Washington and Jefferson National Forest were sampled for brook trout via 3-pass, block-netted, backpack electrofishing depletions. All brook trout were counted, weighed, and measured for fork length. The response variables are differences in 1) percent dominance, 2) population size, 3) biomass, and 4) length-weight index (Fulton's Condition Factor) between brook trout above and below waterfalls. Brook trout dominance (100 vs. 36.9%) is greater above than below waterfalls, but not significantly (p = 0.1003). We found abundance (26 vs.12 individuals per 100m) and overall biomass (885.3 vs 284.6 grams per 100m) of brook trout populations above waterfalls to be significantly greater than their below waterfall counterparts (p = 0.078 for both). We also found brook trout above waterfalls to have a higher condition factor (1.086g/cm3 vs 1.0636g/cm3) than those below waterfalls (p = 0.031). Lastly, we found populations above waterfalls where their occurrence was previously unknown. Despite being isolated, brook trout populations above waterfalls were just as if not more robust than those below and may be excellent targets for conservation.
Book Synopsis A Comparison of the Population Dynamics and Diet of Eastern Brook Trout (Salvelinus Fontinalis), and the Macroinvertebrate Communities Sampled from Three Noncontiguous Stream Sections in Craft Run, Pennsylvania by : Mark Steven Woythal
Download or read book A Comparison of the Population Dynamics and Diet of Eastern Brook Trout (Salvelinus Fontinalis), and the Macroinvertebrate Communities Sampled from Three Noncontiguous Stream Sections in Craft Run, Pennsylvania written by Mark Steven Woythal and published by . This book was released on 1995 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Environmental Factors Related to the Abundance and Distribution of Brook Trout (Salvelinus Fontinalis) and Brown Trout (Salmo Trutta) and Seasonal Movements of Brown Trout in Selected Virginia Streams by : Daniel C. Josephson
Download or read book Environmental Factors Related to the Abundance and Distribution of Brook Trout (Salvelinus Fontinalis) and Brown Trout (Salmo Trutta) and Seasonal Movements of Brown Trout in Selected Virginia Streams written by Daniel C. Josephson and published by . This book was released on 1983 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Habitat Suitability Index Models by : Robert F. Raleigh
Download or read book Habitat Suitability Index Models written by Robert F. Raleigh and published by . This book was released on 1982 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Brook Trout (Salvelinus Fontinalis) Habitat Assessment and Dispersal Patterns in True Brook, NY by : Justin Ecret
Download or read book Brook Trout (Salvelinus Fontinalis) Habitat Assessment and Dispersal Patterns in True Brook, NY written by Justin Ecret and published by . This book was released on 2011 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seasonal Movement Patterns and Habitat Use of Brook Trout Salvelinus Fontinalis and Brown Trout Salmo Trutta in North Central Pennsylvania by : Lori A. Smith
Download or read book Seasonal Movement Patterns and Habitat Use of Brook Trout Salvelinus Fontinalis and Brown Trout Salmo Trutta in North Central Pennsylvania written by Lori A. Smith and published by . This book was released on 2014 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sensitivity and Exposure of Brook Trout Salvelinus Fontinalis Habitat to Climate Change by :
Download or read book Sensitivity and Exposure of Brook Trout Salvelinus Fontinalis Habitat to Climate Change written by and published by . This book was released on 2010 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: Predicting coldwater fisheries distributions under various climate scenarios is of interest to many fisheries managers and researchers. Larger scale models have been useful in highlighting the potential large scale threat. However, the error associated with these models makes predictions of the persistence of individual cold water fisheries problematic. Most of this error is associated with predicted air and water temperatures which typically are simple elevation and location (latitude/longitude) models with simple caveats such as 1°C increase in air temperature equals 0.8°C increase in water temperatures. I directly measured paired air and water temperatures in watersheds containing reproducing populations of brook trout in Virginia during the critical summer period (July 1 to September 30) in both 2009 and 2010. I developed a classification system using sensitivity (change in the daily maximum water temperature from a 1°C increase in the daily maximum air temperature) and exposure metrics (frequency; duration; and magnitude of daily maximum water temperatures> 21°C) that classified brook trout populations into four categories: High Sensitivity-High Exposure; High Sensitivity-Low Exposure; Low Sensitivity-High Exposure and Low Sensitivity- Low Exposure. I found that my paired air and water temperature relationships were highly variable among sites and were a useful metric for classifying the sensitivity and exposure of individual brook trout populations to various climate change scenarios. I identified many (25%) Low Sensitivity- Low Exposure brook trout populations that appear to be resilient to climate change. The median sensitivity (0.39°C) in this study was much lower than the assumed rate (0.80°C) used in many regional models that predicted a complete extirpation of brook trout in Virginia. Several GIS generated metrics (sample area; % riparian canopy; solar insolation ; % groundwater; elevation; % watershed in forest cover) were useful for predicting (accuracy approximately 75%) sensitivity and exposure values. Directly measuring paired air and water temperature relationships can reduce the error of large scale models. I recommend that managers making investment decisions in protecting and restoring brook trout use my direct measurement approach when they cannot afford to make a Type I or Type II error.
Book Synopsis A Study of Survival and Growth of Fingerling Eastern Brook Trout "Salvelinus Fontinalis Fontinalis" (Mitchill) in Two Central Pennsylvania Streams ... by : Benjamin Franklin Donley
Download or read book A Study of Survival and Growth of Fingerling Eastern Brook Trout "Salvelinus Fontinalis Fontinalis" (Mitchill) in Two Central Pennsylvania Streams ... written by Benjamin Franklin Donley and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Investigation of a Brook Trout (Salvelinus Fontinalis) Population in a Northern West Virginia Stream by : Bruce Leonard Redd
Download or read book An Investigation of a Brook Trout (Salvelinus Fontinalis) Population in a Northern West Virginia Stream written by Bruce Leonard Redd and published by . This book was released on 1963 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis CONSERVATION GENETICS OF SOUTHERN APPALACHIAN BROOK TROUT (Salvelinus Fontinalis). by : Thomas Casey Weathers
Download or read book CONSERVATION GENETICS OF SOUTHERN APPALACHIAN BROOK TROUT (Salvelinus Fontinalis). written by Thomas Casey Weathers and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Many range-restricted species, particularly mountaintop species, are often the first groups in which entire species experience extinction due to range contractions and perturbations. Rear-edge, lower latitude, salmonid populations often occupy fragmented habitats and may in turn exhibit more pronounced signatures of isolation than higher latitude conspecifics. Therefore, rear-edge populations present significant conservation challenges to biologists interested in identifying and maintaining ecological and evolutionary processes within and among such populations. Brook Trout (Salvelinus fontinalis), the only endemic salmonid to southern Appalachia, are rich in ecologically and evolutionarily interesting traits such as multiple life history forms, broad latitudinal and elevational distribution, and prodigious neutral genetic differentiation. Causes of continual Brook Trout population and range declines include overharvest, acid precipitation, habitat degradation, competition with non-native species, and climate change. Such declines have led to the increased isolation of many populations of Brook Trout. In the absence of gene flow many isolated populations of Brook Trout may exhibit rapid genetic drift or inbreeding, thus resulting in subsequent losses of adaptive potential. Consequently, there is considerable demand for the implementation of restoration programs that maximize population recovery and resilience of wild Brook Trout. As such, resource managers must plan for an evolutionary future for such a trust species. While the current paradigm of conservation places emphasis on recognition and protection of irreplaceable evolutionarily distinct lineages, the precise and accurate delineation of populations must become a priority. Once populations are identified the best strategy for future conservation may be to enhance connectivity via restoration or translocation efforts rather than protecting specific genotypes. Elucidating spatial clusters of Brook Trout is critical to their conservation, particularly regarding unprecedented environmental change. Therefore, I have combined informative microsatellite data with riverscape genetics approaches to assess whether functional (meta)population assemblages exist among rear-edge populations of Brook Trout sampled across southern Appalachia in the following research chapters. My research elucidates the effects of isolation and fragmentation on Brook Trout genetic and phenotypic (i.e., morphometric and meristic) differentiation, whether neighboring populations exhibit enough gene flow to warrant being considered metapopulations, and the effect of potential barriers to gene flow upon subsequent metapopulation dynamics and genetic diversity. My research largely suggests that rear-edge populations of Brook Trout exhibit extensive neutral genetic differences and appear to be prodigiously isolated. My findings provide biologists a reference when setting management and conservation priorities and may foster more aggressive efforts focused on restoring connectivity among many populations of rear-edge Brook Trout. Further, by demarcating population and subpopulation clusters across riverscapes I provide resource managers information needed to enhance future Brook Trout conservation outcomes.I sought to document existing patterns of genetic variation within and among populations of Brook Trout and then translate my results into an approachable format for managers to access for future management and conservation decision making and to further encourage managers to implement population genetic monitoring programs. My work supports that non-native trout removals combined with habitat restorations could improve connectivity and enhance the outlook for many fragmented populations of wild, native brook trout across southern Appalachia. Moreover, it is my hope that the results from these studies can be used by Brook Trout biologists to select local restoration source stocks used to potentially bolster the effectiveness of different conservation strategies (i.e., founder translocations and genetic rescue).
Author :Kenneth Joseph MacIntosh Publisher :National Library of Canada = Bibliothèque nationale du Canada ISBN 13 :9780612707948 Total Pages :0 pages Book Rating :4.7/5 (79 download)
Book Synopsis Habitat Use and Movement by Brook Trout, Salvelinus Fontinalis, and Rainbow Trout, Oncorhynchus Mykiss, in Three Tributaries of Nipigon Bay, Lake Superior [microform] by : Kenneth Joseph MacIntosh
Download or read book Habitat Use and Movement by Brook Trout, Salvelinus Fontinalis, and Rainbow Trout, Oncorhynchus Mykiss, in Three Tributaries of Nipigon Bay, Lake Superior [microform] written by Kenneth Joseph MacIntosh and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 2001 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three streams were surveyed: Dublin Creek, MacInnes Creek, and Little Cypress River in Northwestern Ontario.
Book Synopsis Topographic Index Modeling of Young-of-year Brook Trout (Salvelinus Fontinalis) Habitat and Selecting Candidate Lakes for Wild Brook Trout Re-Introduction by : Peter Merritt Stevens
Download or read book Topographic Index Modeling of Young-of-year Brook Trout (Salvelinus Fontinalis) Habitat and Selecting Candidate Lakes for Wild Brook Trout Re-Introduction written by Peter Merritt Stevens and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Adirondack brook trout (Salvelinus fontinalis) depend on locations of groundwater upwelling for spawning, nursery habitat and thermal refugia for both young-of-year (YOY) and adult fish. Landscape-scale anthropogenic disturbances, such as logging and road construction, have the potential to influence brook trout habitat by altering these groundwater regimes. We used a topographic index (TI) approach to link watershed-scale topography with groundwater-influenced tributaries and seeps and YOY brook trout presence in the littoral zone of three lakes in the Adirondack Mountains, NY. The TI value of shoreline locations was positively associated with the temperature difference between lake surface and substrate, indicating greater groundwater seepage at locations with a higher TI value. The TI value of shoreline locations was also positively correlated with YOY brook trout presence in the nearshore zone. TI represented a significant improvement in predictive capability over currently available groundwater-influenced habitat location and delineation methods. Akaike's information criterion indicated that TI value was the strongest predictor of: (1) the presence of groundwater-influenced tributaries or seeps, and (2) YOY brook trout presence and numerical abundance in the nearshore zone. However, TI-based metrics were unable to predict brook trout population reproductive status or density at an inter-lake scale, possibly because the effects of acid precipitation are the primary drivers of variability in brook trout population abundance at a regional scale within the Adirondacks. The TI model represents a useful management tool at the scale of an individual lake shoreline, but further refinement is required for applications at an inter-lake scale.
Book Synopsis Evaluation of Brook Trout (Salvelinus Fontinalis) by : Michael Isel (III.)
Download or read book Evaluation of Brook Trout (Salvelinus Fontinalis) written by Michael Isel (III.) and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Approximately 100 brook trout were transplanted into each of four Virginia streams in September 2008. Garth Run and Kinsey Run were re-introductions, and Wildcat Hollow and Sweet Run were new introductions. Single pass electrofishing (EF) surveys were conducted with a backpack electrofisher five times during the study. Selected trout> 70 mm but 100 mm and all trout 100 mm received a Biomark® 134.2 kHz passive integrated transponder (PIT) tag to identify individual fish upon recapture. Trout were present in all streams almost three years post introductions. Catches decreased across the first four surveys. Young of year catch rates severely decreased from June 2009 (n = 77) to June 2010 (n = 7). Adult refuge under low flow conditions and environmental factors such as elevated stream temperatures and drought were determined to be potential limiting factors of brook trout success. Future monitoring is needed to further assess the populations.
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