Change of foraging behavior of cormorants and the effect on river fish

Change of foraging behavior of cormorants and the effect on river fish Hydrobiologia https://doi.org/10.1007/s10750-018-3656-2 PRIMARY RESEARCH PAPER Change of foraging behavior of cormorants and the effect on river fish . . Niels Jepsen Henrik D. Ravn Stig Pedersen Received: 19 January 2018 / Revised: 14 May 2018 / Accepted: 15 May 2018 Springer International Publishing AG, part of Springer Nature 2018 Abstract Since the European population of great level that explains the observed collapse of grayling cormorants (Phalacrocorax carbo sinensis) rapidly and brown trout populations in many Danish streams. increased 30 years ago, Denmark has been one of the core breeding areas for this colonial water bird. Keywords Great cormorant  Predation  Grayling Following a 10-year period with stable breeding Brown trout  Population effect numbers in Denmark, the population of great cor- morants decreased. At the same time, a combination of cold winters and low availability of coastal prey fish apparently triggered birds to seek new foraging areas. Introduction Thus, cormorants began to appear in rivers and streams coinciding with an observed massive decline Conflicts between interest groups over the impacts of of fish, mainly brown trout (Salmo trutta) and grayling great cormorants (Phalacrocorax carbo sinensis Blu- (Thymallus thymallus). In this paper, we present the menbach, 1798) on fish http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Hydrobiologia Springer Journals

Change of foraging behavior of cormorants and the effect on river fish

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Publisher
Springer International Publishing
Copyright
Copyright © 2018 by Springer International Publishing AG, part of Springer Nature
Subject
Life Sciences; Freshwater & Marine Ecology; Ecology; Zoology
ISSN
0018-8158
eISSN
1573-5117
D.O.I.
10.1007/s10750-018-3656-2
Publisher site
See Article on Publisher Site

Abstract

Hydrobiologia https://doi.org/10.1007/s10750-018-3656-2 PRIMARY RESEARCH PAPER Change of foraging behavior of cormorants and the effect on river fish . . Niels Jepsen Henrik D. Ravn Stig Pedersen Received: 19 January 2018 / Revised: 14 May 2018 / Accepted: 15 May 2018 Springer International Publishing AG, part of Springer Nature 2018 Abstract Since the European population of great level that explains the observed collapse of grayling cormorants (Phalacrocorax carbo sinensis) rapidly and brown trout populations in many Danish streams. increased 30 years ago, Denmark has been one of the core breeding areas for this colonial water bird. Keywords Great cormorant  Predation  Grayling Following a 10-year period with stable breeding Brown trout  Population effect numbers in Denmark, the population of great cor- morants decreased. At the same time, a combination of cold winters and low availability of coastal prey fish apparently triggered birds to seek new foraging areas. Introduction Thus, cormorants began to appear in rivers and streams coinciding with an observed massive decline Conflicts between interest groups over the impacts of of fish, mainly brown trout (Salmo trutta) and grayling great cormorants (Phalacrocorax carbo sinensis Blu- (Thymallus thymallus). In this paper, we present the menbach, 1798) on fish

Journal

HydrobiologiaSpringer Journals

Published: May 30, 2018

References

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