NDLI: The hydra effect, bubbles, and chaos in a simple discrete population model with constant effort harvesting

Content Provider	Semantic Scholar
Author	Liz, Eduardo Ruiz-Herrera, Alfonso
Copyright Year	2012
Abstract	We analyze the effects of a strategy of constant effort harvesting in the global dynamics of a one-dimensional discrete population model that includes density-independent survivorship of adults and overcompensating density dependence. We discuss the phenomenon of bubbling (which indicates that harvesting can magnify fluctuations in population abundance) and the hydra effect, which means that the stock size gets larger as harvesting rate increases. Moreover, we show that the system displays chaotic behaviour under the combination of high per capita recruitment and small survivorship rates.
Starting Page	997
Ending Page	1016
Page Count	20
File Format	PDF HTM / HTML
DOI	10.1007/s00285-011-0489-2
Alternate Webpage(s)	http://www.ugr.es/~ecuadif/files/liz%20ruiz.pdf
Alternate Webpage(s)	http://www.dma.uvigo.es/~eliz/pdf/JMB2012.pdf
PubMed reference number	22071654
Alternate Webpage(s)	https://doi.org/10.1007/s00285-011-0489-2
Journal	Medline
Volume Number	65
Journal	Journal of mathematical biology
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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The hydra effect, bubbles, and chaos in a simple discrete population model with constant effort harvesting