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Indexing Walleye Recruitment in Eastern South Dakota Natural Lakes.

紀錄類型:	書目-語言資料,手稿 : Monograph/item
正題名/作者:	Indexing Walleye Recruitment in Eastern South Dakota Natural Lakes./
作者:	Kaufman, Todd M.
面頁冊數:	1 online resource (128 pages)
附註:	Source: Masters Abstracts International, Volume: 56-04.
標題:	Aquatic sciences. -
電子資源:	click for full text (PQDT)
ISBN:	9781369781182

Indexing Walleye Recruitment in Eastern South Dakota Natural Lakes.
Kaufman, Todd M.

Indexing Walleye Recruitment in Eastern South Dakota Natural Lakes. - 1 online resource (128 pages)

Source: Masters Abstracts International, Volume: 56-04.

Thesis (M.S.)--South Dakota State University, 2017.

Includes bibliographical references

Because of the popularity of Walleyes and the need for recurrent supplemental stockings, substantial resources are allocated to their management in eastern South Dakota. For nearly 20 years, fall night electrofishing has been used to monitor age-0 Walleye population parameters, and index future year-class strength in select waters but with limited evaluation. Additionally, knowledge of recruitment patterns and factors that influence those patterns were of interest. Thus, the objectives of this study were: 1) to determine the utility of fall electrofishing age-0 Walleyes to index future year-class strength; 2) to explore whether measures of fall age-0 body size or condition are related to Walleye recruitment; 3) to identify Walleye recruitment patterns and explore recruitment synchrony; and 4) to examine the influence of select abiotic and biotic variables on Walleye recruitment in eastern South Dakota natural lakes.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9781369781182Subjects--Topical Terms:

1178821
Aquatic sciences.
Index Terms--Genre/Form:

554714
Electronic books.

Indexing Walleye Recruitment in Eastern South Dakota Natural Lakes.
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245 1 0 $a Indexing Walleye Recruitment in Eastern South Dakota Natural Lakes.
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500 $a Source: Masters Abstracts International, Volume: 56-04.
500 $a Advisers: Michael L. Brown; Brian G. Blackwell.
502 $a Thesis (M.S.)--South Dakota State University, 2017.
504 $a Includes bibliographical references
520 $a Because of the popularity of Walleyes and the need for recurrent supplemental stockings, substantial resources are allocated to their management in eastern South Dakota. For nearly 20 years, fall night electrofishing has been used to monitor age-0 Walleye population parameters, and index future year-class strength in select waters but with limited evaluation. Additionally, knowledge of recruitment patterns and factors that influence those patterns were of interest. Thus, the objectives of this study were: 1) to determine the utility of fall electrofishing age-0 Walleyes to index future year-class strength; 2) to explore whether measures of fall age-0 body size or condition are related to Walleye recruitment; 3) to identify Walleye recruitment patterns and explore recruitment synchrony; and 4) to examine the influence of select abiotic and biotic variables on Walleye recruitment in eastern South Dakota natural lakes.
520 $a Long-term data sets were used to assess Walleye recruitment. Spearman correlations were used to evaluate the ability of age-0 Walleye fall night electrofishing to index year-class strength (age-2 CPUE) and explore relationships between recruitment, age-0 mean TL (standardized to 15 September), and condition. While high age-0 CPUE's did not ensure strong recruitment to age 2, positive correlations identified for most lakes suggests that fall night electrofishing provides a coarse, but useful index of recruitment in eastern South Dakota natural lakes and should be continued. Meanwhile, correlations used to examine relationships between age-0 Walleye fall size or condition and recruitment yielded few significant results, and thus provided little additional information in terms of indexed year-class strength.
520 $a In a subset of lakes, Walleye recruitment patterns were assessed and an information-theoretic approach was used to evaluate the influence of select abiotic and biotic predictor variables on recruitment. Walleye recruitment was highly variable within and among lakes from 1998-2013 and fluctuations in recruitment were generally non-synchronous. While much of the variation in Walleye recruitment remained unexplained, model selection results supported adult Northern Pike Esox lucius relative abundance and reduced models that included winter severity. Although relationships were weak, lower Walleye recruitment was generally associated with higher Northern Pike relative abundance and increased winter severity.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Aquatic sciences. $3 1178821
655 7 $a Electronic books. $2 local $3 554714
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710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a South Dakota State University. $b Natural Resource Management. $3 1178840
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10264709 $z click for full text (PQDT)