Download or read book Determining the Habitat Occupancy of Young of Year Arctic Grayling Thymallus Arcticus in Sub Arctic Tundra Streams While Accounting for Imperfect Detection written by Kyle Artym and published by . This book was released on 2016 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt: I developed multi-state, multi season occupancy models to determine how a number of interacting ecological variables influence the occurrence of young-of-year (YOY) Arctic Grayling (Thymallus arcticus) in nine streams on the sub-Arctic tundra. The model was developed and parameterized such that three different 'states' of occupancy were investigated (i.e., not occupied, somewhat occupied, and highly occupied), and temporal replication allowed me to account for uncertainty associated with imperfect detection; a common limitation of quantitative species-habitat-use studies. Depth and velocity decreased the probability of occupancy, and the effects were similar to previous Barrenland research. Stream Slope, Overhanging Cover, and Distance to Overwintering Habitat played a major role in explaining YOY Arctic Grayling habitat occupancy; while habitat complexity also was an important determinant. Electrofishing was more efficient at detecting YOY Arctic Grayling in somewhat occupied stream segments, while survey method is unimportant for detecting YOY in highly occupied stream segments. Also, detection efficiency varied between model seasons, and decreased with depth. By accounting for imperfect detection, my research improves the accuracy of occupancy estimates, and enhances our understanding of the habitat requirements of YOY Arctic Grayling in lake outlet streams of the sub-Arctic tundra. This should provide researchers and managers with a greater understanding of the habitats that YOY Arctic Grayling use, and enable researchers, resource managers, and regulators to track shifts in habitat use by YOY Arctic Grayling as climate change and growing industrial presence continue to shape the Canadian North.
Download or read book Comparing Habitat Use and Mercury Accumulation in Arctic Grayling Thymallus Arcticus from Two Northern Ecosystems written by Jonathon Brent Lewis and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: An improved understanding of the distribution and habitat requirements for mountain stream populations of Arctic Grayling (Thymallus arcticus) is necessary to assess their vulnerability to environmental stressors, establish thresholds for development activities, and evaluate population distribution trends over time. Life stage-specific habitat use may be a particularly sensitive indicator of environmental change, but baseline data is lacking, especially for young-of year (YOY) Arctic Grayling. Occupancy-based survey methods were used in the Little Nahanni River watershed in 2015 to quantify Arctic Grayling occupancy across the landscape. Data on a suite of associated habitat variables were also collected to explain YOY occupancy, and to relate to detection efficiency during field surveys, as detection efficiency is an often-neglected aspect of field sampling that affects our understanding of species-habitat relationships. Occupancy modelling has revealed that stream temperature (>8ʻC) and elevation (
Download or read book The Trophic Interactions of Young of the year Arctic Grayling Thymallus Arcticus in an Arctic Tundra Stream written by Heidi E. Golden and published by . This book was released on 1996 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Habitat Suitability Index Models and Instream Flow Suitability Curves written by and published by . This book was released on 1985 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Distribution Relative Abundance and Habitat Utilization of the Arctic Grayling Thymallus Arcticus in the Upper Big Hole River Drainage Montana written by Don Skaar and published by Palala Press. This book was released on 2015-09-05 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book Distribution Relative Abundance and Habitat Utilization of the Arctic Grayling Thymallus Arcticus in the Upper Big Hole River Drainage Montana Ju written by Geoffrey A. McMichael and published by Legare Street Press. This book was released on 2022-10-27 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book Distribution Relative Abundance and Habitat Utilization of the Arctic Grayling Thymallus Arcticus in the Upper Big Hole River Drainage Montana Ju written by Don Skaar and published by Palala Press. This book was released on 2018-03-02 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book Distribution Relative Abundance and Habitat Utilization of the Arctic Grayling Thymallus Arcticus in the Upper Big Hole River Drainage Montana June 21 to August 28 1989 written by Geoffrey a McMichael and published by Palala Press. This book was released on 2015-09-05 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book Temperature Preference and Distribution of Juvenile Arctic Grayling Thymallus Arcticus in the Williston Watershed British Columbia Canada written by Sarah C. F. Hawkshaw and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The habitat requirements of juvenile Arctic grayling (Thymallus arcticus) were assessed in the Williston watershed, British Columbia, where the population is currently red-listed (critically imperiled). Temperature preferences of juvenile Arctic grayling was assessed behaviorally using a shuttlebox system, and an information theoretic approach analysis of logistic regression models was used to evaluate the influence of environmental factors on the distribution of juvenile Arctic grayling throughout the Williston watershed. Temperature preference of juvenile Arctic grayling did not vary between the two tributaries in the watershed (p = 0.77) and the average preferred temperature was 16.84 ± 0.66 °C (n = 28). Comparisons of the preferred temperature to ambient water temperatures suggested that juvenile Arctic grayling will avoid areas where maximum water temperature is above the preferred temperature. There was a positive association between juvenile Arctic grayling occurrence and stream order (SO) and stream order multiplied by distance from the Williston reservoir (SDRxSO), as well as a negative association with the mean daily water temperature variance (varT) and average water temperature (aveT). Overall these findings suggest that large river systems are important juvenile Arctic grayling habitat and management decision should be made to ensure protection of this habitat throughout the range of this species. --P. ii.
Download or read book Freshwater Habitat Relationships written by Steven Wayne Krueger and published by . This book was released on 1981 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: The distribution, life history, and economic importance of the fish are first described. The next sections describes specific habitat relationships to migration, spawning, post-spawning movement, development of eggs and alevins, rearing, and overwintering each by geographic type (lake inlets and outlets, bog streams, mountain streams, and spring streams). Conceptual suitability index curves, deficiencies in the database, and recommendations are also included.
Download or read book Distribution Relative Abundance and Habitat Utilization of the Arctic Grayling Thymallus Arcticus in the Upper Big Hole River Drainage Montana written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Interdisciplinary Approaches to Enhance Biological Data Collection and Understanding of Arctic Grayling Thymallus Arcticus Spawning Behaviour written by Patricia Ann House and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Increased pressure of industrial development in the Arctic drives the need for a better understanding of Arctic fish and their interaction with their habitat. Environmental disturbances resulting from these developments often require off-setting facilities, particularly with respect to Arctic grayling (Thymallus arcticus) spawning activity. Furthermore, the Arctic is also expected to experience increased climate change effects resulting in adaptations to Arctic grayling behaviour in response to their changing environment. Due to the remoteness of sites, climate extremes and variability, fisheries field work in the Arctic typically requires extensive support, such as camp infrastructure, helicopters, and durable equipment. Support costs to undertake these field programs often limit data collection efforts, potentially leading to questionable habitat assumptions being made that will adversely affect fish behaviour. Using a multi-disciplinary approach, this thesis validated three approaches for improving Arctic grayling enumeration and for establishing a better basis for habitat design criteria: (1) A wildlife camera enumeration technique for Arctic streams was found to be comparable for population estimates when compared to trap boxes and visual stream surveys and able to provide longer data sets with less field time. The use of wildlife cameras is a suitable technique for remote locations but selection will depend on the specific requirements of an enumeration program; (2) Using paired values of depth and velocity, Arctic grayling spawning site selection can be described by the dimensionless Froude number. The preferred Arctic grayling mean Froude number value was found to be 0.27 (SE=0.0045) and was not significantly different between two populations of Arctic grayling in different size streams. This value is also lower than that identified for Sockeye and Atlantic salmon (Froude number = 0.34) which can likely be attributed to their larger size and different spawning behaviour and substrate selections when compared to Arctic grayling; (3) Commonly measured cross-sectional variables of stream discharge and water temperature were linked in a longitudinal manner through Maximum Likelihood Estimation analysis. Such an approach illustrates the importance of standardizing data for meaningful comparison by consideration of the relationship between variables leading up to a life history event, not just the event itself. A relationship was shown between unit discharge and water temperature leading up to the Arctic grayling spawning event. The enumeration technique was a field project using wildlife cameras images that compared to physical fish counting data being undertaken concurrently by Arctic Canadian Diamond Company Ltd. at Ekati Diamond Mine in the Northwest Territories, Canada. The consideration of spawning activities in relation to habitat and hydraulic characteristics were developed using existing data sets collected as part of regulatory compliance monitoring programs as well as from the available literature.
Download or read book Status of the Arctic Grayling Thymallus Arcticus in Alberta written by Alberta Conservation Association and published by Government of] Alberta. This book was released on 2005 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Status of the Arctic Grayling Thymallus Arcticus in Alberta written by Jordan Walker and published by . This book was released on 2005 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Status of the Arctic Grayling in Alberta written by Walker and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Young of the year Arctic Grayling Thymallus Arcticus Metabolism written by John Harrison and published by . This book was released on 1995 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Landscape Effects on Growth of Age 0 Arctic Grayling in Tundra Streams written by Peter D. MacKinnon and published by . This book was released on 2006 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
