2018/04/30 by Michael J. Plank, Michael J Plank · 1 citation
Biochemistry, Genetics and Molecular Biology · Environmental Science · #Aquatic Ecosystems and Biodiversity #Marine Bivalve and Aquaculture Studies #Marine and fisheries research #q-bio.PE
paper · pdf · doi:10.1016/j.fishres.2018.06.003
published as Fisheries Research, Volume 207, November 2018, Pages 171-174
openalex publication_date 2018/06/18 · crossref created 2018/06/18 · crossref issued 2018/11/01 · crossref published 2018/11/01 · crossref published-print 2018/11/01 · arxiv created 2019/10/22 · arxiv updated 2019/10/23 · crossref deposited 2025/09/28 · crossref indexed 2025/09/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Zhou and Smith (2017) investigate different multi-species harvesting scenarios using a simple Holling-Tanner model. Among these scenarios are two methods for implementing balanced harvesting, where fishing is distributed across trophic levels in accordance with their productivity. This note examines the effects of a different quantitative implementation of balanced harvesting, where the fishing mortality rate is proportional to the total production rate of each trophic level. The results show that setting fishing mortality rate to be proportional to total production rate, rather than to productivity per unit biomass, better preserves trophic structure and provides a crucial safeguard for rare and threatened ecological groups. This is a key ingredient of balanced harvesting if it is to meet its objective of preserving biodiversity.