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Declining abundance of coral reef fish in a World-Heritage-listed marine park

One of the most robust metrics for assessing the effectiveness of protected areas is the temporal trend in the abundance of the species they are designed to protect. We surveyed coral-reef fish and living hard coral in and adjacent to a sanctuary zone (SZ: where all forms of fishing are prohibited)...

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Autores principales: Vanderklift, Mathew A., Babcock, Russell C., Boschetti, Fabio, Haywood, Michael D. E., Pillans, Richard D., Thomson, Damian P.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6820736/
https://www.ncbi.nlm.nih.gov/pubmed/31664119
http://dx.doi.org/10.1038/s41598-019-52016-9
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author Vanderklift, Mathew A.
Babcock, Russell C.
Boschetti, Fabio
Haywood, Michael D. E.
Pillans, Richard D.
Thomson, Damian P.
author_facet Vanderklift, Mathew A.
Babcock, Russell C.
Boschetti, Fabio
Haywood, Michael D. E.
Pillans, Richard D.
Thomson, Damian P.
author_sort Vanderklift, Mathew A.
collection PubMed
description One of the most robust metrics for assessing the effectiveness of protected areas is the temporal trend in the abundance of the species they are designed to protect. We surveyed coral-reef fish and living hard coral in and adjacent to a sanctuary zone (SZ: where all forms of fishing are prohibited) in the World Heritage-listed Ningaloo Marine Park during a 10-year period. There were generally more individuals and greater biomass of many fish taxa (especially emperors and parrotfish) in the SZ than the adjacent recreation zone (RZ: where recreational fishing is allowed) — so log response ratios of abundance were usually positive in each year. However, despite this, there was an overall decrease in both SZ and RZ in absolute abundance of some taxa by up to 22% per year, including taxa that are explicitly targeted (emperors) by fishers and taxa that are neither targeted nor frequently captured (most wrasses and butterflyfish). A concomitant decline in the abundance (measured as percentage cover) of living hard coral of 1–7% per year is a plausible explanation for the declining abundance of butterflyfish, but declines in emperors might be more plausibly due to fishing. Our study highlights that information on temporal trends in absolute abundance is needed to assess whether the goals of protected areas are being met: in our study, patterns in absolute abundance across ten years of surveys revealed trends that simple ratios of abundance did not.
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spelling pubmed-68207362019-11-04 Declining abundance of coral reef fish in a World-Heritage-listed marine park Vanderklift, Mathew A. Babcock, Russell C. Boschetti, Fabio Haywood, Michael D. E. Pillans, Richard D. Thomson, Damian P. Sci Rep Article One of the most robust metrics for assessing the effectiveness of protected areas is the temporal trend in the abundance of the species they are designed to protect. We surveyed coral-reef fish and living hard coral in and adjacent to a sanctuary zone (SZ: where all forms of fishing are prohibited) in the World Heritage-listed Ningaloo Marine Park during a 10-year period. There were generally more individuals and greater biomass of many fish taxa (especially emperors and parrotfish) in the SZ than the adjacent recreation zone (RZ: where recreational fishing is allowed) — so log response ratios of abundance were usually positive in each year. However, despite this, there was an overall decrease in both SZ and RZ in absolute abundance of some taxa by up to 22% per year, including taxa that are explicitly targeted (emperors) by fishers and taxa that are neither targeted nor frequently captured (most wrasses and butterflyfish). A concomitant decline in the abundance (measured as percentage cover) of living hard coral of 1–7% per year is a plausible explanation for the declining abundance of butterflyfish, but declines in emperors might be more plausibly due to fishing. Our study highlights that information on temporal trends in absolute abundance is needed to assess whether the goals of protected areas are being met: in our study, patterns in absolute abundance across ten years of surveys revealed trends that simple ratios of abundance did not. Nature Publishing Group UK 2019-10-29 /pmc/articles/PMC6820736/ /pubmed/31664119 http://dx.doi.org/10.1038/s41598-019-52016-9 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Vanderklift, Mathew A.
Babcock, Russell C.
Boschetti, Fabio
Haywood, Michael D. E.
Pillans, Richard D.
Thomson, Damian P.
Declining abundance of coral reef fish in a World-Heritage-listed marine park
title Declining abundance of coral reef fish in a World-Heritage-listed marine park
title_full Declining abundance of coral reef fish in a World-Heritage-listed marine park
title_fullStr Declining abundance of coral reef fish in a World-Heritage-listed marine park
title_full_unstemmed Declining abundance of coral reef fish in a World-Heritage-listed marine park
title_short Declining abundance of coral reef fish in a World-Heritage-listed marine park
title_sort declining abundance of coral reef fish in a world-heritage-listed marine park
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6820736/
https://www.ncbi.nlm.nih.gov/pubmed/31664119
http://dx.doi.org/10.1038/s41598-019-52016-9
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