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Movement, survival and refuge use of...

Hodges, Shawn William.

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Movement, survival and refuge use of three minnow species ( Campostoma anomalum, Notropis boops, and Semotilus atromaculatus ) during seasonal drying in an intermittent Ozark mountain stream.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Movement, survival and refuge use of three minnow species ( Campostoma anomalum, Notropis boops, and Semotilus atromaculatus ) during seasonal drying in an intermittent Ozark mountain stream./
作者:	Hodges, Shawn William.
面頁冊數:	42 p.
附註:	Source: Masters Abstracts International, Volume: 45-05, page: 2347.
Contained By:	Masters Abstracts International45-05.
標題:	Agriculture, Fisheries and Aquaculture. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1442367

Movement, survival and refuge use of three minnow species ( Campostoma anomalum, Notropis boops, and Semotilus atromaculatus ) during seasonal drying in an intermittent Ozark mountain stream.
Hodges, Shawn William.

Movement, survival and refuge use of three minnow species ( Campostoma anomalum, Notropis boops, and Semotilus atromaculatus ) during seasonal drying in an intermittent Ozark mountain stream. - 42 p.

Source: Masters Abstracts International, Volume: 45-05, page: 2347.

Thesis (M.S.)--University of Arkansas, 2007.

The effect of stream drying on fish populations is poorly understood, and with the increased threat of habitat alteration or loss research is needed to determine population responses to natural stressors before systems are altered to unnatural states. We determined survival, movement and abundance of three species of stream dwelling cyprinids, bigeye shiner (Notropis boops ), central stoneroller (Campostoma anomalum), and creek chub (Semotilus atromaculatus), in riffle and pool habitats using mark-recapture during seasonal stream drying in an Ozark mountain stream. I hypothesized that during drying (1) fish will move into pools from riffle habitats, and (2) fish in pools will have increased apparent survival rates over those that stay in riffle habitats. Data were analyzed using program MARK, where a priori models were ranked using Akaike's Information Criterion, with population parameters based on plausible models. Creek chubs supported the hypotheses of increased movement into pools during riffle dewatering, and increased survival in these perennial refugia. Creek chub abundance increased significantly in pools as fish moved from riffle to pool habitats during drying. Central stonerollers supported the hypothesis of increased movement into pool habitats during stream drying; however, survival rates were not significantly greater in pools than riffles. Central stoneroller abundance increased significantly in pools as fish moved into these habitats from riffles. Bigeye shiners did not support hypotheses, with no directional movements during stream drying, and increased survival in riffle habitats. Bigeye shiner abundance did not differ significantly between habitat types, but did significantly decrease over time. Examining three fish species within the same system allowed for a more comprehensive view of differing strategies to seasonal stream drying. Future studies including multiple species with differing life histories and comparing between differing hydrologic cycles will provide greater insight into the different responses of species under the same stressful conditions.Subjects--Topical Terms:

1020913
Agriculture, Fisheries and Aquaculture.

Movement, survival and refuge use of three minnow species ( Campostoma anomalum, Notropis boops, and Semotilus atromaculatus ) during seasonal drying in an intermittent Ozark mountain stream.
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