Paradox of marine protected areas: Suppression of fishing may cause species loss

Nao Takashina, Akihiko Mougi, Yoh Iwasa

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

A number of fish and invertebrate stocks have been depleted by overexploitation in recent years. To address this, marine protected areas (MPAs) are often established to protect biodiversity and recover stocks. We analyzed the potential impact of establishing MPAs on marine ecosystems using mathematical models. We demonstrate that establishment of an MPA can sometimes result in a considerable decline, or even extinction, of a species. We focus on a prey-predator system in two patches, one exposed to fishing activity and the other protected (MPA). Our analyses reveal that the establishment of the MPA can cause a reduction in prey abundance, and even extinction of the prey. Such unintended consequences are more likely to occur if the predator species is a generalist and if the MPA is intended to protect only the predatory species. Further, a mobile predator that migrates adaptively rather than randomly is associated with a greater reduction in prey abundance.

Original languageEnglish
Pages (from-to)475-485
Number of pages11
JournalPopulation Ecology
Volume54
Issue number3
DOIs
Publication statusPublished - Jul 1 2012

Fingerprint

protected area
conservation areas
fishing
predator
predators
extinction
marine ecosystem
generalist
loss
mathematical models
invertebrate
invertebrates
biodiversity
fish

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics

Cite this

Paradox of marine protected areas : Suppression of fishing may cause species loss. / Takashina, Nao; Mougi, Akihiko; Iwasa, Yoh.

In: Population Ecology, Vol. 54, No. 3, 01.07.2012, p. 475-485.

Research output: Contribution to journalArticle

Takashina, Nao ; Mougi, Akihiko ; Iwasa, Yoh. / Paradox of marine protected areas : Suppression of fishing may cause species loss. In: Population Ecology. 2012 ; Vol. 54, No. 3. pp. 475-485.
@article{9b401ba142b84a6a9fc57ca7740a5e03,
title = "Paradox of marine protected areas: Suppression of fishing may cause species loss",
abstract = "A number of fish and invertebrate stocks have been depleted by overexploitation in recent years. To address this, marine protected areas (MPAs) are often established to protect biodiversity and recover stocks. We analyzed the potential impact of establishing MPAs on marine ecosystems using mathematical models. We demonstrate that establishment of an MPA can sometimes result in a considerable decline, or even extinction, of a species. We focus on a prey-predator system in two patches, one exposed to fishing activity and the other protected (MPA). Our analyses reveal that the establishment of the MPA can cause a reduction in prey abundance, and even extinction of the prey. Such unintended consequences are more likely to occur if the predator species is a generalist and if the MPA is intended to protect only the predatory species. Further, a mobile predator that migrates adaptively rather than randomly is associated with a greater reduction in prey abundance.",
author = "Nao Takashina and Akihiko Mougi and Yoh Iwasa",
year = "2012",
month = "7",
day = "1",
doi = "10.1007/s10144-012-0323-8",
language = "English",
volume = "54",
pages = "475--485",
journal = "Population Ecology",
issn = "1438-3896",
publisher = "Springer Japan",
number = "3",

}

TY - JOUR

T1 - Paradox of marine protected areas

T2 - Suppression of fishing may cause species loss

AU - Takashina, Nao

AU - Mougi, Akihiko

AU - Iwasa, Yoh

PY - 2012/7/1

Y1 - 2012/7/1

N2 - A number of fish and invertebrate stocks have been depleted by overexploitation in recent years. To address this, marine protected areas (MPAs) are often established to protect biodiversity and recover stocks. We analyzed the potential impact of establishing MPAs on marine ecosystems using mathematical models. We demonstrate that establishment of an MPA can sometimes result in a considerable decline, or even extinction, of a species. We focus on a prey-predator system in two patches, one exposed to fishing activity and the other protected (MPA). Our analyses reveal that the establishment of the MPA can cause a reduction in prey abundance, and even extinction of the prey. Such unintended consequences are more likely to occur if the predator species is a generalist and if the MPA is intended to protect only the predatory species. Further, a mobile predator that migrates adaptively rather than randomly is associated with a greater reduction in prey abundance.

AB - A number of fish and invertebrate stocks have been depleted by overexploitation in recent years. To address this, marine protected areas (MPAs) are often established to protect biodiversity and recover stocks. We analyzed the potential impact of establishing MPAs on marine ecosystems using mathematical models. We demonstrate that establishment of an MPA can sometimes result in a considerable decline, or even extinction, of a species. We focus on a prey-predator system in two patches, one exposed to fishing activity and the other protected (MPA). Our analyses reveal that the establishment of the MPA can cause a reduction in prey abundance, and even extinction of the prey. Such unintended consequences are more likely to occur if the predator species is a generalist and if the MPA is intended to protect only the predatory species. Further, a mobile predator that migrates adaptively rather than randomly is associated with a greater reduction in prey abundance.

UR - http://www.scopus.com/inward/record.url?scp=84862639929&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84862639929&partnerID=8YFLogxK

U2 - 10.1007/s10144-012-0323-8

DO - 10.1007/s10144-012-0323-8

M3 - Article

AN - SCOPUS:84862639929

VL - 54

SP - 475

EP - 485

JO - Population Ecology

JF - Population Ecology

SN - 1438-3896

IS - 3

ER -