eprintid: 10112512
rev_number: 15
eprint_status: archive
userid: 608
dir: disk0/10/11/25/12
datestamp: 2020-10-16 13:25:22
lastmod: 2021-10-29 22:48:54
status_changed: 2020-10-16 13:25:22
type: article
metadata_visibility: show
creators_name: Bayley, DT
creators_name: Purvis, A
creators_name: Nellas, AC
creators_name: Arias, M
creators_name: Koldewey, HJ
title: Measuring the long-term success of small-scale marine protected areas in a Philippine reef fishery
ispublished: inpress
divisions: UCL
divisions: B02
divisions: C08
divisions: D09
divisions: F99
keywords: Fisheries, Community dynamics, Marine reserves, Climate, Coral reefs, Philippines
note: 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/.
abstract: Tropical coral reefs are subject to multiple pressures from both natural and anthropogenic sources. These pressures have caused widespread declines in reef health, resulting in the increased use of spatial management tools such as marine protected areas (MPAs). MPAs have proven generally effective if well designed and enforced, but there are limited long-term studies investigating how the presence of small-scale MPAs affects fish populations and reef communities. Using a 12-year time series, we found that small-scale (10–50 ha) community-managed MPAs along the Danajon Bank of the Philippines preserved average fish biomass within their boundaries over time relative to surrounding fished reefs. Unprotected areas are, however, showing significant long-term biomass decline. MPAs were also found to preserve more key trophic groups and larger-bodied commercially targeted reef fish families. Fish biomass of piscivore, scavenger and invertivore trophic groups inside individual MPAs is, however, still declining at a similar rate as outside. Surprisingly, long-term benthic cover and growth form composition were not significantly affected overall by MPA presence, despite the sporadic use of highly destructive dynamite fishing in this region. Coral cover has remained historically low (21–28%) throughout the study, following widespread bleaching mortality. While management tempered overall abundance declines, we found that irrespective of MPA presence, there was a generalised decline of both large- and small-bodied fish size groups across the study region, most steeply within the 20–30 cm length fish, and a shift towards proportionally higher abundances of small (5–10 cm) fish. This indicates a combination of over-exploitation, inadequate MPA size and coverage for larger fish, and the lingering effects of the 1998 bleaching event. Generalised shifts in body size and trophic structure reported here could lead to future reductions in fishery productivity and stability and will be further exacerbated unless broader fishery regulations and enforcement is instated.
date: 2020-07-31
date_type: published
publisher: SPRINGER
official_url: https://doi.org/10.1007/s00338-020-01987-7
oa_status: green
full_text_type: pub
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 1808597
doi: 10.1007/s00338-020-01987-7
lyricists_name: Bayley, Daniel
lyricists_id: DTIBA80
actors_name: Bayley, Daniel
actors_id: DTIBA80
actors_role: owner
full_text_status: public
publication: Coral Reefs
pages: 14
citation:        Bayley, DT;    Purvis, A;    Nellas, AC;    Arias, M;    Koldewey, HJ;      (2020)    Measuring the long-term success of small-scale marine protected areas in a Philippine reef fishery.                   Coral Reefs        10.1007/s00338-020-01987-7 <https://doi.org/10.1007/s00338-020-01987-7>.    (In press).    Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10112512/1/Bayley2020_Article_MeasuringTheLong-termSuccessOf%20Philippine%20MPAs.pdf