Comparison of Two Sampling Designs for Fish Assemblage Assessment in a Large River
Abstract We compared the efficiency of stratified random and fixed‐station sampling designs to characterize fish assemblages in anticipation of dam removal on the Penobscot River, the largest river in Maine. We used boat electrofishing methods in both sampling designs. Multiple 500‐m transects were...
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crwiley:10.1080/00028487.2013.864706 2024-06-02T08:03:43+00:00 Comparison of Two Sampling Designs for Fish Assemblage Assessment in a Large River Kiraly, Ian A. Coghlan, Stephen M. Zydlewski, Joseph Hayes, Daniel University of Maine 2014 http://dx.doi.org/10.1080/00028487.2013.864706 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1080/00028487.2013.864706 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Transactions of the American Fisheries Society volume 143, issue 2, page 508-518 ISSN 0002-8487 1548-8659 journal-article 2014 crwiley https://doi.org/10.1080/00028487.2013.864706 2024-05-03T11:56:36Z Abstract We compared the efficiency of stratified random and fixed‐station sampling designs to characterize fish assemblages in anticipation of dam removal on the Penobscot River, the largest river in Maine. We used boat electrofishing methods in both sampling designs. Multiple 500‐m transects were selected randomly and electrofished in each of nine strata within the stratified random sampling design. Within the fixed‐station design, up to 11 transects (1,000 m) were electrofished, all of which had been sampled previously. In total, 88 km of shoreline were electrofished during summer and fall in 2010 and 2011, and 45,874 individuals of 34 fish species were captured. Species‐accumulation and dissimilarity curve analyses indicated that all sampling effort, other than fall 2011 under the fixed‐station design, provided repeatable estimates of total species richness and proportional abundances. Overall, our sampling designs were similar in precision and efficiency for sampling fish assemblages. The fixed‐station design was negatively biased for estimating the abundance of species such as Common Shiner Luxilus cornutus and Fallfish Semotilus corporalis and was positively biased for estimating biomass for species such as White Sucker Catostomus commersonii and Atlantic Salmon Salmo salar . However, we found no significant differences between the designs for proportional catch and biomass per unit effort, except in fall 2011. The difference observed in fall 2011 was due to limitations on the number and location of fixed sites that could be sampled, rather than an inherent bias within the design. Given the results from sampling in the Penobscot River, application of the stratified random design is preferable to the fixed‐station design due to less potential for bias caused by varying sampling effort, such as what occurred in the fall 2011 fixed‐station sample or due to purposeful site selection. Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library Transactions of the American Fisheries Society 143 2 508 518 |
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Wiley Online Library |
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crwiley |
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English |
description |
Abstract We compared the efficiency of stratified random and fixed‐station sampling designs to characterize fish assemblages in anticipation of dam removal on the Penobscot River, the largest river in Maine. We used boat electrofishing methods in both sampling designs. Multiple 500‐m transects were selected randomly and electrofished in each of nine strata within the stratified random sampling design. Within the fixed‐station design, up to 11 transects (1,000 m) were electrofished, all of which had been sampled previously. In total, 88 km of shoreline were electrofished during summer and fall in 2010 and 2011, and 45,874 individuals of 34 fish species were captured. Species‐accumulation and dissimilarity curve analyses indicated that all sampling effort, other than fall 2011 under the fixed‐station design, provided repeatable estimates of total species richness and proportional abundances. Overall, our sampling designs were similar in precision and efficiency for sampling fish assemblages. The fixed‐station design was negatively biased for estimating the abundance of species such as Common Shiner Luxilus cornutus and Fallfish Semotilus corporalis and was positively biased for estimating biomass for species such as White Sucker Catostomus commersonii and Atlantic Salmon Salmo salar . However, we found no significant differences between the designs for proportional catch and biomass per unit effort, except in fall 2011. The difference observed in fall 2011 was due to limitations on the number and location of fixed sites that could be sampled, rather than an inherent bias within the design. Given the results from sampling in the Penobscot River, application of the stratified random design is preferable to the fixed‐station design due to less potential for bias caused by varying sampling effort, such as what occurred in the fall 2011 fixed‐station sample or due to purposeful site selection. |
author2 |
University of Maine |
format |
Article in Journal/Newspaper |
author |
Kiraly, Ian A. Coghlan, Stephen M. Zydlewski, Joseph Hayes, Daniel |
spellingShingle |
Kiraly, Ian A. Coghlan, Stephen M. Zydlewski, Joseph Hayes, Daniel Comparison of Two Sampling Designs for Fish Assemblage Assessment in a Large River |
author_facet |
Kiraly, Ian A. Coghlan, Stephen M. Zydlewski, Joseph Hayes, Daniel |
author_sort |
Kiraly, Ian A. |
title |
Comparison of Two Sampling Designs for Fish Assemblage Assessment in a Large River |
title_short |
Comparison of Two Sampling Designs for Fish Assemblage Assessment in a Large River |
title_full |
Comparison of Two Sampling Designs for Fish Assemblage Assessment in a Large River |
title_fullStr |
Comparison of Two Sampling Designs for Fish Assemblage Assessment in a Large River |
title_full_unstemmed |
Comparison of Two Sampling Designs for Fish Assemblage Assessment in a Large River |
title_sort |
comparison of two sampling designs for fish assemblage assessment in a large river |
publisher |
Wiley |
publishDate |
2014 |
url |
http://dx.doi.org/10.1080/00028487.2013.864706 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1080/00028487.2013.864706 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Transactions of the American Fisheries Society volume 143, issue 2, page 508-518 ISSN 0002-8487 1548-8659 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1080/00028487.2013.864706 |
container_title |
Transactions of the American Fisheries Society |
container_volume |
143 |
container_issue |
2 |
container_start_page |
508 |
op_container_end_page |
518 |
_version_ |
1800748318025842688 |