Assessing fishing impacts in a tropical reservoir through an ecosystem modeling approach

Philip, Juliana Strieder; Minte-Vera, Carolina V.; Coll, Marta; Angelini, Ronaldo

Assessing fishing impacts in a tropical reservoir through an ecosystem modeling approach

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dc.contributor.author	Philip, Juliana Strieder
dc.contributor.author	Minte-Vera, Carolina V.
dc.contributor.author	Coll, Marta
dc.contributor.author	Angelini, Ronaldo
dc.date.accessioned	2020-11-19T19:33:21Z
dc.date.available	2020-11-19T19:33:21Z
dc.date.issued	2018-10-31
dc.description.resumo	Ecological models are useful for evaluating fishery management scenarios, as they allow researchers to investigate alternative fishing effort, as well as varying environmental and trophic interaction scenarios. Through an ecosystem modeling approach (Ecopath with Ecosim), we addressed the possible impacts of small-scale fisheries on the structure and functioning of a tropical ecosystem (Itaipu Reservoir, Brazil). We found that fishing effects and predator–prey interactions were the main drivers explaining catch trends in the Itaipu Reservoir fisheries. The mean trophic level of catch did not change throughout the analyzed time period and no losses in secondary production from exploitation (L index) were observed, indicating that Itaipu fisheries are sustainable regarding ecosystem effects. The negative impacts of introduced species on native species seem to be greater than the fishing impacts. Fishing simulations from the ecosystem Maximum Sustainable Yield (MSY) reduced the biomass of some important species in the local fishery. Regarding management advice, our results indicate that fishing efforts should not be increased for curimba (Prochilodus lineatus), pintado (Pseudoplatystoma corruscans), and jaú (Zungaro jahu). Additionally, participative management methods are important measures for local fisheries. Finally, additional research is needed to investigate how fishery management can promote the use of multispecific methods (e.g., gillnets) to control introduced species	pt_BR
dc.identifier.citation	PHILIPPSEN, Juliana Strieder; MINTE-VERA, Carolina V.; COLL, Marta; ANGELINI, Ronaldo. Assessing fishing impacts in a tropical reservoir through an ecosystem modeling approach. Reviews in Fish Biology and Fisheries, [S.L.], v. 29, n. 1, p. 125-146, 31 out. 2018. Disponível em: Acesso em: https://link.springer.com/article/10.1007/s11160-018-9539-9.Acesso em: 10 nov. 2020. https://doi.org/10.1007/s11160-018-9539-9	pt_BR
dc.identifier.doi	10.1007/s11160-018-9539-9
dc.identifier.issn	0960-3166
dc.identifier.issn	1573-5184
dc.identifier.uri	https://repositorio.ufrn.br/handle/123456789/30602
dc.language	en	pt_BR
dc.publisher	Springer	pt_BR
dc.rights	Attribution 3.0 Brazil	*
dc.rights.uri	http://creativecommons.org/licenses/by/3.0/br/	*
dc.subject	Ecopath with ecosim	pt_BR
dc.subject	Ecosystem-based management	pt_BR
dc.subject	Inland fisheries	pt_BR
dc.subject	L index	pt_BR
dc.subject	Maximum sustainable yield	pt_BR
dc.title	Assessing fishing impacts in a tropical reservoir through an ecosystem modeling approach	pt_BR
dc.type	article	pt_BR