Effect of Climate fluctuations on Fisheries in a Sub-Arctic Environment

by Neha Vaingankar

Climate change influences marine ecosystems in different ways. For example, fishery management plans fail because of unanticipated changes. Intense exploitation of fisheries may lead to bottom-up control of the food chain and greater sensitivity to climate change. Because climate change occurs so slowly, it is difficult for scientists to see the ecosystem impacts right away, but gradually, the effects become evident in the interactions between fishing and environmental variability. In this paper Durant et al. (2013) aim to explore the effects of fishing and climate change on the structure of populations of sub-Arctic ecosystems, especially when it comes to temperature fluctuations and fishing-induced changes in spatial and demographic population structure. They are particularly interested in shifts in spatial and demographic population structure that affect the recruitment and population growth rate. The results show some patterns as well as differences in the relative importance of fishing and climate on the populations and ecosystems examined. Continue reading