Unintended cultivation, shifting baselines, and conflict between objectives for fisheries and conservation

Brown, Christopher J. and Trebilco, Rowan (2014) Unintended cultivation, shifting baselines, and conflict between objectives for fisheries and conservation. Conservation Biology, 28 3: 677-688. doi:10.1111/cobi.12267


Author Brown, Christopher J.
Trebilco, Rowan
Title Unintended cultivation, shifting baselines, and conflict between objectives for fisheries and conservation
Journal name Conservation Biology   Check publisher's open access policy
ISSN 0888-8892
1523-1739
Publication date 2014-06
Year available 2014
Sub-type Critical review of research, literature review, critical commentary
DOI 10.1111/cobi.12267
Volume 28
Issue 3
Start page 677
End page 688
Total pages 12
Place of publication Washington, United States
Publisher Wiley-Blackwell
Collection year 2015
Language eng
Abstract The effects of fisheries on marine ecosystems, and their capacity to drive shifts in ecosystem states, have been widely documented. Less well appreciated is that some commercially valuable species respond positively to fishing-induced ecosystem change and can become important fisheries resources in modified ecosystems. Thus, the ecological effects of one fishery can unintentionally increase the abundance and productivity of other fished species (i.e., cultivate). We reviewed examples of this effect in the peer-reviewed literature. We found 2 underlying ecosystem drivers of the effect: trophic release of prey species when predators are overfished and habitat change. Key ecological, social, and economic conditions required for one fishery to unintentionally cultivate another include strong top-down control of prey by predators, the value of the new fishery, and the capacity of fishers to adapt to a new fishery. These unintended cultivation effects imply strong trade-offs between short-term fishery success and conservation efforts to restore ecosystems toward baseline conditions because goals for fisheries and conservation may be incompatible. Conflicts are likely to be exacerbated if fisheries baselines shift relative to conservation baselines and there is investment in the new fishery. However, in the long-term, restoration toward ecosystem baselines may often benefit both fishery and conservation goals. Unintended cultivation can be identified and predicted using a combination of time-series data, dietary studies, models of food webs, and socioeconomic data. Identifying unintended cultivation is necessary for management to set compatible goals for fisheries and conservation.
Keyword Cultivation
Habitat modification
Over-fishing
Predation
Social-ecological systems
Stable state
Trophic cascade
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Critical review of research, literature review, critical commentary
Collections: Global Change Institute Publications
Official 2015 Collection
School of Biological Sciences Publications
 
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