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A mathematical derivation of size spectra in fish populations

被引：13
作者：
Arino, O
Shin, YJ
Mullon, C
机构：
[1] IRD Bondy, UR GEODES, F-93143 Bondy, France
[2] Ctr Rech Halieut, IRD, F-34203 Sete, France
[3] Univ Cape Town, ZA-7700 Rondebosch, South Africa
来源：
COMPTES RENDUS BIOLOGIES | 2004年 / 327卷 / 03期
关键词：
size spectrum; marine population model; size-structured model; cannibalism; semigroup;
D O I：
10.1016/j.crvi.2003.11.012
中图分类号：
Q [生物科学];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Taking into account a predator/prey size ratio in a size-structured population model leads to a partial derivative equation of which we study the properties. By expliciting the structure of the attractor of this equation, it is shown that a simple mechanism, size-based opportunistic predation, can explain the stability in the shape of size spectra observed in various marine ecosystems. (C) 2004 Academie des sciences. Published by Elsevier SAS. All rights reserved.
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页码：245 / 254
页数：10
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