Chapter

Ecosystem Effects of Fishing and Whaling in the North Pacific and Atlantic Oceans

BORIS WORM, HEIKE K LOTZE and RANSOM A. MYERS

in Whales, Whaling, and Ocean Ecosystems

Published by University of California Press

Published in print January 2007 | ISBN: 9780520248847
Published online March 2012 | e-ISBN: 9780520933200 | DOI: http://dx.doi.org/10.1525/california/9780520248847.003.0026
Ecosystem Effects of Fishing and Whaling in the North Pacific and Atlantic Oceans

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This chapter uses time-series analysis to explore whether prey release and competitive release have occurred during or shortly after the period of industrial whaling (from 1950 to 1980) in the Northwest Atlantic and Northeast Pacific Oceans, respectively. It focuses on these two regions because they are well known, food webs are relatively simple, and there are data available on whale abundance, diets, and the abundance of prey and competitor populations. It predicts that that there may be negative correlations between whale and forage fish abundance (prey release), between groundfish and forage fish abundance (prey release), and possibly between whale and groundfish abundance (competitive release) during or shortly after the period of industrial whaling in the Northwest Atlantic and Northeast Pacific.

Keywords: time-series analysis; prey release; competitive release; industrial whaling; forage fish abundance; groundfish abundance

Chapter.  5291 words.  Illustrated.

Subjects: Aquatic Biology

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