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Landscape-scale analysis of stream f...

Blann, Kristen Lynne.

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Landscape-scale analysis of stream fish communities and habitats: Lessons from southeastern Minnesota.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Landscape-scale analysis of stream fish communities and habitats: Lessons from southeastern Minnesota./
作者:	Blann, Kristen Lynne.
面頁冊數:	167 p.
附註:	Source: Dissertation Abstracts International, Volume: 65-05, Section: B, page: 2196.
Contained By:	Dissertation Abstracts International65-05B.
標題:	Biology, Ecology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3134566
ISBN:	0496817930

Landscape-scale analysis of stream fish communities and habitats: Lessons from southeastern Minnesota.
Blann, Kristen Lynne.

Landscape-scale analysis of stream fish communities and habitats: Lessons from southeastern Minnesota. - 167 p.

Source: Dissertation Abstracts International, Volume: 65-05, Section: B, page: 2196.

Thesis (Ph.D.)--University of Minnesota, 2004.

In southeastern Minnesota, as in many other parts of the U.S., stream biological communities have been under dramatic and continuous pressure throughout the 20th century, subjected to the cumulative impacts of land use practices, exploitation, channel diversions and alteration, reductions in and wider extremes of instream flow, habitat loss and degradation, and point and non-point source pollution. Concern over these challenges has translated into primarily site-level restoration and management strategies, while larger-scale processes (at the watershed or subwatershed level) that drive many of the observed habitat losses remain poorly understood or addressed.

ISBN: 0496817930Subjects--Topical Terms:

1017726
Biology, Ecology.

Landscape-scale analysis of stream fish communities and habitats: Lessons from southeastern Minnesota.
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245 1 0 $a Landscape-scale analysis of stream fish communities and habitats: Lessons from southeastern Minnesota.
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500 $a Source: Dissertation Abstracts International, Volume: 65-05, Section: B, page: 2196.
500 $a Adviser: Bruce Vondracek.
502 $a Thesis (Ph.D.)--University of Minnesota, 2004.
520 $a In southeastern Minnesota, as in many other parts of the U.S., stream biological communities have been under dramatic and continuous pressure throughout the 20th century, subjected to the cumulative impacts of land use practices, exploitation, channel diversions and alteration, reductions in and wider extremes of instream flow, habitat loss and degradation, and point and non-point source pollution. Concern over these challenges has translated into primarily site-level restoration and management strategies, while larger-scale processes (at the watershed or subwatershed level) that drive many of the observed habitat losses remain poorly understood or addressed.
520 $a The goal of my research was to generate more integrated understanding of stream systems in southeastern Minnesota in historical and landscape context, using both geographic analysis of long-term quantitative monitoring data of stream fish and habitats, as well as qualitative focus groups and surveys with anglers and landowners. How do we link long-term, large-scale data and information about catchment to site-level conditions to generate understanding of the system as a whole? Significant patterns in habitat, fish communities and trout abundance were identified in relation to land use and ecoregional landscape characteristics, and results provided lessons pertaining to future research design and analysis. Results are discussed in the context of spatial and temporal scale, sample size, social values and trends. Further research into the interactions of geology, groundwater, and stream thermal regimes is needed. Improving the integration of physical and biological disciplines and models could potentially be productively addressed through interdisciplinary working groups focused on integrated assessment, priority-setting, research design, and modeling, perhaps in conjunction with existing watershed scale entities.
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