Year: 2017
Type: book-chapter
Abstract: Fisheries are the major driver for the changing in properties of both fished and unfished \nspecies, through direct and indirect effects. Direct effects can include reductions in population \nabundance, age and size structure, biodiversity, community composition and habitat \ndestruction. Indirect effects, including incidental mortality, are transmitted through the \necosystem by trophic interactions and competition, and may result in increased or decreased \nabundance of prey or predator species, altering community composition. In recognition \nof the complex, interconnected nature of marine ecosystems, ecosystem approaches have \nbeen promoted as a way to improve fisheries assessment and management. There is a widerange \nof multi-species and ecosystem modelling approaches. They range from extended \nsingle species models to multi-species minimum realistic models, food web models to \nwhole ecosystem models with age and spatial structure. All models have their strengths \nand weaknesses: simplicity may entail missing key processes, whereas complexity requires \nmore data, time and resources.
Author: Vidya Shree Bharti
Language: English
Subfield: Aquatic Science
Domain: Life Sciences
Open Access status: green
OpenAlex ID: W2935462975