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Movement patterns, reproduction, and...

Fraser, Gregory S.

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Movement patterns, reproduction, and potential impacts of climate change on three native fishes in the upper White River drainage, Colorado.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Movement patterns, reproduction, and potential impacts of climate change on three native fishes in the upper White River drainage, Colorado./
作者:	Fraser, Gregory S.
面頁冊數:	128 p.
附註:	Source: Masters Abstracts International, Volume: 54-05.
Contained By:	Masters Abstracts International54-05(E).
標題:	Aquatic sciences. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1590569
ISBN:	9781321800982

Movement patterns, reproduction, and potential impacts of climate change on three native fishes in the upper White River drainage, Colorado.
Fraser, Gregory S.

Movement patterns, reproduction, and potential impacts of climate change on three native fishes in the upper White River drainage, Colorado. - 128 p.

Source: Masters Abstracts International, Volume: 54-05.

Thesis (M.S.)--Colorado State University, 2015.

Habitat alterations and introduction of non-native fishes have reduced the distributions of Flannelmouth Sucker Catostomus latipinnis, Bluehead Sucker Catostomus discobolus, and Roundtail Chub Gila robusta to less than 50% of their historic ranges in the Colorado River basin. Using mark-recapture techniques, I evaluated the use of tributaries as spawning areas for Flannelmouth and Bluehead suckers.

ISBN: 9781321800982Subjects--Topical Terms:

3174300
Aquatic sciences.

Movement patterns, reproduction, and potential impacts of climate change on three native fishes in the upper White River drainage, Colorado.
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245 1 0 $a Movement patterns, reproduction, and potential impacts of climate change on three native fishes in the upper White River drainage, Colorado.
300 $a 128 p.
500 $a Source: Masters Abstracts International, Volume: 54-05.
500 $a Advisers: Dana L. Winkelman; Kevin R. Bestgen.
502 $a Thesis (M.S.)--Colorado State University, 2015.
520 $a Habitat alterations and introduction of non-native fishes have reduced the distributions of Flannelmouth Sucker Catostomus latipinnis, Bluehead Sucker Catostomus discobolus, and Roundtail Chub Gila robusta to less than 50% of their historic ranges in the Colorado River basin. Using mark-recapture techniques, I evaluated the use of tributaries as spawning areas for Flannelmouth and Bluehead suckers.
520 $a Suckers were captured with fyke nets as they migrated upstream into Coal Creek, a tributary of the White River, presumably to spawn, and were PIT tagged and released. Tagged Flannelmouth and Bluehead suckers returned to Coal Creek in subsequent years, demonstrating >40% spawning site fidelity. High levels of site fidelity indicated that small tributaries may be important spawning habitat for these species. Finally, remote PIT tag detections also showed that 81% of tagged fish returning to Coal Creek were not also captured in fyke nets. This research shows that tributaries are an important part of Flannelmouth and Bluehead suckers life history and should be considered when developing management strategies for these species.
520 $a Fish community sampling showed that the upper White River was pristine, as native fishes were > 90% of those captured. Timing of reproduction for Flannelmouth Sucker, Bluehead Sucker, and Roundtail Chub along a 150 river kilometer longitudinal gradient of a main-stem White River reach and two tributaries revealed that water temperature was the dominant environmental factor cueing reproduction for all three species. Flannelmouth Sucker, Bluehead Sucker, and Roundtail Chub reproduction began earlier in spring at warmer, lower-elevation, downstream locations and progressed longitudinally upriver in later spring or early summer as water temperatures increased. In tributaries, warmer water temperatures initiated reproduction by suckers earlier than in the adjacent main-stem White River.
520 $a Presence of larvae and otolith-derived hatching dates demonstrated a distinct and predictable progression of first reproduction in an upstream direction associated with warming water. There was also a clear upstream limit to reproduction for all three species. The upstream limit for Roundtail Chub was at a lower elevation than for either sucker species. A regression model was used to predict water temperature during fish spawning seasons as a function of covariates air temperature, date, elevation, and flow. Using published climate change projections for water temperature and flow, the regression model showed that both years of this study were warmer than average and 2012 conditions approximated those for potential climate change scenarios modeled. Lower flows and warmer air temperatures as a result of climate change will result in earlier reproduction and may expand the upstream limits of thermally suitable habitat for reproduction by these three fishes, while reducing habitat size.
520 $a Expansion of habitat for reproduction upstream does not ensure population persistence, as most juvenile recruitment for Flannelmouth Sucker and Bluehead Sucker occurred only in downstream reaches of the White River study area, and recruitment for Roundtail Chub was limited everywhere. Thus, populations of these species may require a network of suitable riverine habitat, including tributaries, along a relatively extensive longitudinal continuum, to promote survival of life stages needed for population persistence. The long-term implications of climate change are unknown and managers should strive to perpetuate this valuable and relatively pristine native fish community in the upper White River drainage as a vestige of the native fish communities that formerly existed throughout the Colorado River basin. (Abstract shortened by UMI.).
590 $a School code: 0053.
650 4 $a Aquatic sciences. $3 3174300
650 4 $a Ecology. $3 516476
650 4 $a Climate change. $2 bicssc $3 2079509
690 $a 0792
690 $a 0329
690 $a 0404
710 2 $a Colorado State University. $b Fish, Wildlife, and Conservation Biology. $3 3190086
773 0 $t Masters Abstracts International $g 54-05(E).
790 $a 0053
791 $a M.S.
792 $a 2015
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1590569