Effects of Stream Temperature and Climate Change on Fluvial Arctic Grayling and Non-native Salmonids in the Upper Big Hole River, Montana PDF Download
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Author: Shane Jeffrey Vatland
Publisher:
ISBN:
Category : Big Hole River (Mont.)
Languages : en
Pages : 119
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Book Description
The upper Big Hole River basin in southwestern Montana supports one of the last naturally-reproducing populations of fluvial Arctic grayling Thymallus arcticus in the coterminous United States. Warm summer water temperatures and negative interactions with non-native fish (brook trout Salvelinus fontinalis, rainbow trout Oncorhynchus mykiss, and brown trout Salmo trutta) have been identified as critical factors constraining this grayling population. Arctic grayling and these non-native fishes are all cold-water species with similar temperature requirements. Understanding when, where, and to what extent water temperatures are suitable for these fishes provides a physical basis for conservation planning. In chapter 2, I used a combination of thermal infrared (TIR) imagery and stationary temperature recorders to estimate water temperatures at a relatively fine spatial (every ~ 100 m of stream length) and temporal (continuous) resolution over a large extent of the Big Hole River (~ 100 km) during the warmest part of the summer in 2008. This modeling revealed considerable spatial and temporal heterogeneity in water temperature and highlighted the value of assessing thermal regimes at relatively fine spatial and temporal scales. In chapter 3, I assessed the potential effects of climate change on thermal suitability of summer water temperatures for these salmonids. Water temperature simulations projected significant warming from the 1980s through the 2060s. Despite this warming, water temperatures in some sections of stream remained below thermal tolerance thresholds through the 2060s. These stream temperature data provide a critical foundation for understanding the dynamic, multiscale habitat needs of these mobile stream fish and can aid in developing conservation strategies for fluvial Arctic grayling.
Author: Shane Jeffrey Vatland
Publisher:
ISBN:
Category : Big Hole River (Mont.)
Languages : en
Pages : 119
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Book Description
The upper Big Hole River basin in southwestern Montana supports one of the last naturally-reproducing populations of fluvial Arctic grayling Thymallus arcticus in the coterminous United States. Warm summer water temperatures and negative interactions with non-native fish (brook trout Salvelinus fontinalis, rainbow trout Oncorhynchus mykiss, and brown trout Salmo trutta) have been identified as critical factors constraining this grayling population. Arctic grayling and these non-native fishes are all cold-water species with similar temperature requirements. Understanding when, where, and to what extent water temperatures are suitable for these fishes provides a physical basis for conservation planning. In chapter 2, I used a combination of thermal infrared (TIR) imagery and stationary temperature recorders to estimate water temperatures at a relatively fine spatial (every ~ 100 m of stream length) and temporal (continuous) resolution over a large extent of the Big Hole River (~ 100 km) during the warmest part of the summer in 2008. This modeling revealed considerable spatial and temporal heterogeneity in water temperature and highlighted the value of assessing thermal regimes at relatively fine spatial and temporal scales. In chapter 3, I assessed the potential effects of climate change on thermal suitability of summer water temperatures for these salmonids. Water temperature simulations projected significant warming from the 1980s through the 2060s. Despite this warming, water temperatures in some sections of stream remained below thermal tolerance thresholds through the 2060s. These stream temperature data provide a critical foundation for understanding the dynamic, multiscale habitat needs of these mobile stream fish and can aid in developing conservation strategies for fluvial Arctic grayling.
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Languages : en
Pages :
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Languages : en
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Author: Geoffrey a McMichael
Publisher: Palala Press
ISBN: 9781341586064
Category :
Languages : en
Pages : 46
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Book Description
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.
Author: J. P. Magee
Publisher:
ISBN:
Category : Arctic grayling
Languages : en
Pages : 38
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Author: Geoffrey A. McMichael
Publisher: Legare Street Press
ISBN: 9781017475784
Category : History
Languages : en
Pages : 0
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Book Description
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.
Author: George Alton Liknes
Publisher:
ISBN:
Category : Arctic grayling
Languages : en
Pages : 118
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Author: Calvin M. Kaya
Publisher:
ISBN:
Category : Arctic grayling
Languages : en
Pages : 102
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Author: Don Skaar
Publisher: Palala Press
ISBN: 9781378957868
Category : History
Languages : en
Pages : 56
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Book Description
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.
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Category : Arctic grayling
Languages : en
Pages :
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