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Relationships Between Hydrology and ...

Dattilo, John Charles.

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Relationships Between Hydrology and the Production of Fishes Occupying Both River and Reservoir Environments.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Relationships Between Hydrology and the Production of Fishes Occupying Both River and Reservoir Environments./
作者:	Dattilo, John Charles.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2017,
面頁冊數:	134 p.
附註:	Source: Masters Abstracts International, Volume: 57-06.
Contained By:	Masters Abstracts International57-06(E).
標題:	Aquatic sciences. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10685770
ISBN:	9780438076471

Relationships Between Hydrology and the Production of Fishes Occupying Both River and Reservoir Environments.
Dattilo, John Charles.

Relationships Between Hydrology and the Production of Fishes Occupying Both River and Reservoir Environments. - Ann Arbor : ProQuest Dissertations & Theses, 2017 - 134 p.

Source: Masters Abstracts International, Volume: 57-06.

Thesis (M.S.)--Oklahoma State University, 2017.

Reservoir construction for human-use services alters connected riverine flow patterns and influences fish production. The effects of fish production in response to altered hydrology has not been well studied for many ecologically-significant fishes. Therefore, my study objective was to determine the effects of flow and water-level patterns of both rivers and reservoirs on fish recruitment and growth of two pelagic fishes. I sampled fishes from two rivers and two reservoirs and related seasonal and annual hydrology patterns to the recruitment and growth of each species. River and reservoir populations of Freshwater Drum reached similar ages (32 and 31, respectively). Likewise, longevity of Gizzard Shad between the two systems was also similar (7 and 8 years, respectively). However, both species grew larger in rivers than reservoirs. Recruitment of Freshwater Drum in reservoirs was negatively related to water retention time (r2=0.59) suggesting moving water through the reservoir was beneficial. Alternatively, recruitment in rivers was negatively related to the annual number of flow reversals and positively related to prespawn discharge (r2 = 0.33). Unlike Freshwater Drum, there was no relationship between flow metrics and Gizzard Shad recruitment in reservoirs. However, recruitment of riverine Gizzard Shad was positively related to high flow pulses during the prespawn and spawning periods (r2 = 0.48). The growth of both species in reservoirs was positively related to the number of days each year that water levels were above the conservation pool. Growth of Freshwater Drum was also negatively related to minimum summer water levels (r 2 = 0.84). Growth of both Freshwater Drum and Gizzard Shad occupying river systems was positively related to May (r2 = 0.86) and July discharge (r2 = 0.84), respectively. In general, growth and recruitment of the reservoir populations was related more to annual water patterns, whereas riverine fishes responded more to seasonal flow patterns. Results of this study provide important information on the relationship between hydrology and pelagic fish production in both rivers and reservoirs. This information is useful for developing holistic river-reservoir water-allocation plans.

ISBN: 9780438076471Subjects--Topical Terms:

3174300
Aquatic sciences.

Relationships Between Hydrology and the Production of Fishes Occupying Both River and Reservoir Environments.
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