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An Analysis of Fish Assemblage Change Pre- and Post-lock and Dam Construction in the Red River, Louisiana.

紀錄類型:	書目-語言資料,手稿 : Monograph/item
正題名/作者:	An Analysis of Fish Assemblage Change Pre- and Post-lock and Dam Construction in the Red River, Louisiana./
作者:	Dodson, Thomas Alexander.
面頁冊數:	1 online resource (52 pages)
附註:	Source: Masters Abstracts International, Volume: 85-01.
Contained By:	Masters Abstracts International85-01.
標題:	Biology. -
電子資源:	click for full text (PQDT)
ISBN:	9798379954536

An Analysis of Fish Assemblage Change Pre- and Post-lock and Dam Construction in the Red River, Louisiana.
Dodson, Thomas Alexander.

An Analysis of Fish Assemblage Change Pre- and Post-lock and Dam Construction in the Red River, Louisiana. - 1 online resource (52 pages)

Source: Masters Abstracts International, Volume: 85-01.

Thesis (M.S.)--Southeastern Louisiana University, 2023.

Includes bibliographical references

The Southeastern United States is rich in freshwater fish diversity. However, habitat alteration has a profound impact on fish assemblages across this region. The Red River, Louisiana has historically been diverse in fishes. In the 1980's and 1990's a series of five lock and dams were constructed to facilitate watercraft traffic. To assess assemblage changes attributable to lock and dam construction, I analyzed historical survey data from the Red River (1966-2002). I compared changes in assemblages pre-and post-construction of the first lock and dams. The results show similar species richness across time, but the data also show a shift in fish assemblages after dam construction. Functional diversity analyses are similar, with the time period post-construction showing a rapid decline in Periodic species, and a increase in Equilibrium species. These results indicate a multi-metric approach may be more informative that traditional species richness values when examining assemblage change.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2024

Mode of access: World Wide Web

ISBN: 9798379954536Subjects--Topical Terms:

599573
Biology.
Subjects--Index Terms:

Equilibrium speciesIndex Terms--Genre/Form:

554714
Electronic books.

An Analysis of Fish Assemblage Change Pre- and Post-lock and Dam Construction in the Red River, Louisiana.
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504 $a Includes bibliographical references
520 $a The Southeastern United States is rich in freshwater fish diversity. However, habitat alteration has a profound impact on fish assemblages across this region. The Red River, Louisiana has historically been diverse in fishes. In the 1980's and 1990's a series of five lock and dams were constructed to facilitate watercraft traffic. To assess assemblage changes attributable to lock and dam construction, I analyzed historical survey data from the Red River (1966-2002). I compared changes in assemblages pre-and post-construction of the first lock and dams. The results show similar species richness across time, but the data also show a shift in fish assemblages after dam construction. Functional diversity analyses are similar, with the time period post-construction showing a rapid decline in Periodic species, and a increase in Equilibrium species. These results indicate a multi-metric approach may be more informative that traditional species richness values when examining assemblage change.
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653 $a Functional diversity
653 $a Periodic species
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653 $a Habitat alteration
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