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The impacts of flow alterations to c...

Dyer, Joseph J.

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The impacts of flow alterations to crayfishes in southeastern Oklahoma, with an emphasis on the mena crayfish (Orconectes menae ).

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	The impacts of flow alterations to crayfishes in southeastern Oklahoma, with an emphasis on the mena crayfish (Orconectes menae )./
作者:	Dyer, Joseph J.
面頁冊數:	120 p.
附註:	Source: Masters Abstracts International, Volume: 53-04.
Contained By:	Masters Abstracts International53-04(E).
標題:	Agriculture, Fisheries and Aquaculture. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1561544
ISBN:	9781321069891

The impacts of flow alterations to crayfishes in southeastern Oklahoma, with an emphasis on the mena crayfish (Orconectes menae ).
Dyer, Joseph J.

The impacts of flow alterations to crayfishes in southeastern Oklahoma, with an emphasis on the mena crayfish (Orconectes menae ). - 120 p.

Source: Masters Abstracts International, Volume: 53-04.

Thesis (M.S.)--Oklahoma State University, 2014.

This item must not be sold to any third party vendors.

Humans have the ability to impact their environment more than any other animal on the planet. Our activities can alter the environment to the point that it is unsuitable to the native species resulting in a loss of biodiversity. Scientist now understand the importance of biodiversity and have begun to call for the conservation of vulnerable species. Species that are narrowly endemic are considered to be vulnerable because they use specific habitats that are highly susceptible to human disturbance. The components to species conservation are 1.) delineate the spatial distribution of the species, 2.) understand how the species interacts with its environment, and 3.) employ management strategies based on the ecology of the species. In this study, I investigated several crayfish species that are endemic to the Ouachita Mountains in Oklahoma and Arkansas. I established the spatial distributions of the crayfish using Maximum Entropy species distribution modeling. I then investigated crayfish habitat use with quantitative sampling and a movement study. Finally, I studied the ability of crayfish to burrow under different conditions. I found that crayfish distribution at the landscape scale is driven by climate, geology and elevation. In general, the crayfish in my study occurred above 300 m elevation where the geology was dominated by sandstone and shale, and rainfall totals were the highest. My quantitative data indicated that crayfish did not select for specific habitat types at the reach scale; however, crayfish appeared to use shallow and dry habitat even as streams dried. There was a lot of variability in the movement study but crayfish tended to burrow in response to drought. In my burrowing experiments I found that pebble substrate can restrict crayfish burrowing more than cobble substrate. I also found that fine sediment restricts crayfish burrowing ability regardless of substrate size. The combination of sedimentation and climate change is likely to have a negative impact on these crayfish.

ISBN: 9781321069891Subjects--Topical Terms:

1020913
Agriculture, Fisheries and Aquaculture.

The impacts of flow alterations to crayfishes in southeastern Oklahoma, with an emphasis on the mena crayfish (Orconectes menae ).
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