東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

A Comparison of Fish Health Indices ...

Jensen, Josiah B.

FindBook

Google Book

Amazon

博客來

A Comparison of Fish Health Indices Applied to Freshwater Species of the Chesapeake Bay Watershed.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	A Comparison of Fish Health Indices Applied to Freshwater Species of the Chesapeake Bay Watershed./
作者:	Jensen, Josiah B.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2023,
面頁冊數:	118 p.
附註:	Source: Masters Abstracts International, Volume: 85-06.
Contained By:	Masters Abstracts International85-06.
標題:	Agriculture. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30725988
ISBN:	9798381015959

A Comparison of Fish Health Indices Applied to Freshwater Species of the Chesapeake Bay Watershed.
Jensen, Josiah B.

A Comparison of Fish Health Indices Applied to Freshwater Species of the Chesapeake Bay Watershed. - Ann Arbor : ProQuest Dissertations & Theses, 2023 - 118 p.

Source: Masters Abstracts International, Volume: 85-06.

Thesis (M.Sc.)--West Virginia University, 2023.

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

Fish kills, increased disease prevalence, and endocrine disruption have been observed in multiple freshwater fish populations of the Chesapeake Bay watershed (CBW). Some of these health issues occur in conjunction with declining abundance. A combination of multiple stressors is believed to be weakening sensitive fish species in non-tidal regions of the CBW. Fish health indices such as Deformity, Erosion, Lesion, and Tumor counts (DELTs), and the Health Assessment Index (HAI) are simple tools designed to evaluate the general health of fish populations. Both indices could be widely applied in the watershed because they require limited training and equipment. However, their utility in the CBW needs to be demonstrated. Fish health concerns in the CBW often occur in areas dominated by forested and agricultural land. The research in this thesis evaluates the influences of agricultural land-use, season, seasonal stream discharge, species, age, and sex on DELTs and the HAI. Two studies are included. The first occurred in the Shenandoah Valley of Virginia and West Virginia and applies the DELT index to fish aggregations and the HAI to white sucker and fantail dater in wadable streams. These streams were spread over a gradient of catchment pastureland. The second looked at DELTs and the HAI applied to smallmouth bass at 5 sites, 2 in the Potomac River watershed and 3 in the Susquehanna River watershed, sampled from 2013 to 2020 in the spring and fall. These sites varied in catchment agricultural and forested land with small areas of development. The utility of the two indices in agricultural regions of the CBW was not demonstrated. Both DELTs and HAI scores were correlated with the age and sex of fish sampled, and not with any of the included environmental variables. Future research directions and other concerns surrounding the use of DELTs, and the HAI are discussed.

ISBN: 9798381015959Subjects--Topical Terms:

518588
Agriculture.

A Comparison of Fish Health Indices Applied to Freshwater Species of the Chesapeake Bay Watershed.
LDR:03048nmm a2200385 4500 001 2393404
005 20240315085558.5
006 m o d
007 cr#unu||||||||
008 251215s2023 ||||||||||||||||| ||eng d
020 $a 9798381015959
035 $a (MiAaPQ)AAI30725988
035 $a (MiAaPQ)WVirginia12805
035 $a AAI30725988
040 $a MiAaPQ $c MiAaPQ
100 1 $a Jensen, Josiah B. $3 3762864
245 1 2 $a A Comparison of Fish Health Indices Applied to Freshwater Species of the Chesapeake Bay Watershed.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2023
300 $a 118 p.
500 $a Source: Masters Abstracts International, Volume: 85-06.
500 $a Advisor: Mazik, Patricia.
502 $a Thesis (M.Sc.)--West Virginia University, 2023.
506 $a This item must not be sold to any third party vendors.
520 $a Fish kills, increased disease prevalence, and endocrine disruption have been observed in multiple freshwater fish populations of the Chesapeake Bay watershed (CBW). Some of these health issues occur in conjunction with declining abundance. A combination of multiple stressors is believed to be weakening sensitive fish species in non-tidal regions of the CBW. Fish health indices such as Deformity, Erosion, Lesion, and Tumor counts (DELTs), and the Health Assessment Index (HAI) are simple tools designed to evaluate the general health of fish populations. Both indices could be widely applied in the watershed because they require limited training and equipment. However, their utility in the CBW needs to be demonstrated. Fish health concerns in the CBW often occur in areas dominated by forested and agricultural land. The research in this thesis evaluates the influences of agricultural land-use, season, seasonal stream discharge, species, age, and sex on DELTs and the HAI. Two studies are included. The first occurred in the Shenandoah Valley of Virginia and West Virginia and applies the DELT index to fish aggregations and the HAI to white sucker and fantail dater in wadable streams. These streams were spread over a gradient of catchment pastureland. The second looked at DELTs and the HAI applied to smallmouth bass at 5 sites, 2 in the Potomac River watershed and 3 in the Susquehanna River watershed, sampled from 2013 to 2020 in the spring and fall. These sites varied in catchment agricultural and forested land with small areas of development. The utility of the two indices in agricultural regions of the CBW was not demonstrated. Both DELTs and HAI scores were correlated with the age and sex of fish sampled, and not with any of the included environmental variables. Future research directions and other concerns surrounding the use of DELTs, and the HAI are discussed.
590 $a School code: 0256.
650 4 $a Agriculture. $3 518588
650 4 $a Bass. $3 3680764
650 4 $a Chemical contaminants. $3 3695529
650 4 $a Tumors. $3 893964
650 4 $a Parasites. $3 671720
650 4 $a Rivers. $3 519737
650 4 $a Carp. $3 3687621
650 4 $a Mortality. $3 533218
650 4 $a Trout. $3 3685299
650 4 $a Watersheds. $3 544815
650 4 $a Fisheries management. $3 3558781
650 4 $a Aquatic sciences. $3 3174300
650 4 $a Biological oceanography. $3 2122748
650 4 $a Parasitology. $3 635062
650 4 $a Water resources management. $3 794747
690 $a 0473
690 $a 0792
690 $a 0416
690 $a 0474
690 $a 0718
690 $a 0595
710 2 $a West Virginia University. $3 1017532
773 0 $t Masters Abstracts International $g 85-06.
790 $a 0256
791 $a M.Sc.
792 $a 2023
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30725988