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Whales, Whaling, and Ocean Ecosystems$
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James Estes

Print publication date: 2007

Print ISBN-13: 9780520248847

Published to California Scholarship Online: March 2012

DOI: 10.1525/california/9780520248847.001.0001

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

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

Chapter:
(p.335) Twe Nty-Six Ecosystem Effects of Fishing and Whaling in the North Pacific and Atlantic Oceans
Source:
Whales, Whaling, and Ocean Ecosystems
Author(s):

BORIS WORM

HEIKE K LOTZE

RANSOM A. MYERS

Publisher:
University of California Press
DOI:10.1525/california/9780520248847.003.0026

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

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