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Assessing Biota and Environmental Ch...

Alexander, Trevor Lane.

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Assessing Biota and Environmental Characteristics Above and Below a Low-Head Dam.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Assessing Biota and Environmental Characteristics Above and Below a Low-Head Dam./
Author:	Alexander, Trevor Lane.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2023,
Description:	93 p.
Notes:	Source: Masters Abstracts International, Volume: 85-03.
Contained By:	Masters Abstracts International85-03.
Subject:	Ecology. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30568058
ISBN:	9798380368780

Assessing Biota and Environmental Characteristics Above and Below a Low-Head Dam.
Alexander, Trevor Lane.

Assessing Biota and Environmental Characteristics Above and Below a Low-Head Dam. - Ann Arbor : ProQuest Dissertations & Theses, 2023 - 93 p.

Source: Masters Abstracts International, Volume: 85-03.

Thesis (M.S.)--Western Carolina University, 2023.

Dams are a form of anthropogenic alteration to aquatic ecosystems that can affect natural conditions and influence aquatic fauna assemblages. Depending on the size and type of a dam, the resulting effect on the aquatic environment will differ. Possible effects include altered flow rate, water temperatures, and sediment transport. Dams can also create barriers that limit fish migration or distribution of fishes, macroinvertebrates, and aquatic plant species. The focal point of this study was a low head dam, located on the Tuckasegee River in Jackson County, NC. This dam is damaged and will possibly be removed in the future. We sampled fish and macroinvertebrates at multiple sites above and below the dam to compare species assemblages. We collected benthic macroinvertebrates using a kick net in shallow riffles and a D-frame net for timed multihabitat sampling. We used backpack electrofishers to sample fish in available wadeable habitats. We used multivariate statistical analyses to determine similarity of fish and macroinvertebrate assemblages among sites. Our results indicate that the dam has had minimal effects on aquatic habitat and aquatic macroinvertebrates. We found greater fish diversity below the impoundment. We detected some species only above or below the dam. Based on the results of this study, we believe that restored connectivity to this system may improve fish diversity above the dam. Removing the dam may cause a temporary decrease in sensitive macroinvertebrates since the dam retains sediment. Substrate composition may change temporarily below the dam until the finer substrate is transported downstream. Overall, this study provides baseline data over two years that can be referenced if the dam is removed.

ISBN: 9798380368780Subjects--Topical Terms:

516476
Ecology.
Subjects--Index Terms:

Aquatic environment

Assessing Biota and Environmental Characteristics Above and Below a Low-Head Dam.
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245 1 0 $a Assessing Biota and Environmental Characteristics Above and Below a Low-Head Dam.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2023
300 $a 93 p.
500 $a Source: Masters Abstracts International, Volume: 85-03.
500 $a Advisor: Martin, Thomas;Gibbs, Keith.
502 $a Thesis (M.S.)--Western Carolina University, 2023.
520 $a Dams are a form of anthropogenic alteration to aquatic ecosystems that can affect natural conditions and influence aquatic fauna assemblages. Depending on the size and type of a dam, the resulting effect on the aquatic environment will differ. Possible effects include altered flow rate, water temperatures, and sediment transport. Dams can also create barriers that limit fish migration or distribution of fishes, macroinvertebrates, and aquatic plant species. The focal point of this study was a low head dam, located on the Tuckasegee River in Jackson County, NC. This dam is damaged and will possibly be removed in the future. We sampled fish and macroinvertebrates at multiple sites above and below the dam to compare species assemblages. We collected benthic macroinvertebrates using a kick net in shallow riffles and a D-frame net for timed multihabitat sampling. We used backpack electrofishers to sample fish in available wadeable habitats. We used multivariate statistical analyses to determine similarity of fish and macroinvertebrate assemblages among sites. Our results indicate that the dam has had minimal effects on aquatic habitat and aquatic macroinvertebrates. We found greater fish diversity below the impoundment. We detected some species only above or below the dam. Based on the results of this study, we believe that restored connectivity to this system may improve fish diversity above the dam. Removing the dam may cause a temporary decrease in sensitive macroinvertebrates since the dam retains sediment. Substrate composition may change temporarily below the dam until the finer substrate is transported downstream. Overall, this study provides baseline data over two years that can be referenced if the dam is removed.
590 $a School code: 1373.
650 4 $a Ecology. $3 516476
650 4 $a Limnology. $3 545788
650 4 $a Water resources management. $3 794747
650 4 $a Aquatic sciences. $3 3174300
650 4 $a Statistics. $3 517247
653 $a Aquatic environment
653 $a Aquatic plant species
653 $a Dams
653 $a Sediment transport
653 $a Environmental characteristics
690 $a 0329
690 $a 0793
690 $a 0595
690 $a 0792
690 $a 0463
710 2 $a Western Carolina University. $b Biology. $3 2099833
773 0 $t Masters Abstracts International $g 85-03.
790 $a 1373
791 $a M.S.
792 $a 2023
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30568058