Population Dynamics of Poikilotherm and Homeotherm Vertebrates: Effects of Food Shortage
We have investigated how the population dynamics of two types of vertebrates is influenced by food shortage. One type consists of animals which show indeterminate growth rate (cut the coat to the cloth), e.g. fish. The other type includes animals which show a determinate type of growth rate (require...
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| Veröffentlicht in: | Oikos 1991-03, Vol.60 (2), p.269-272 |
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| container_title | Oikos |
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| creator | Steen, Johan B. Steen, Harald Nils Chr. Stenseth |
| description | We have investigated how the population dynamics of two types of vertebrates is influenced by food shortage. One type consists of animals which show indeterminate growth rate (cut the coat to the cloth), e.g. fish. The other type includes animals which show a determinate type of growth rate (require a minimum daily food supply to survive), e.g. mammals and birds. To this end we have developed a model which assumes that animal biomass is regulated by food biomass alone (i.e. no predation), while food biomass follows self-regulating dynamics. The model predicts stable biomass for the first type of animals and unstable, cyclic biomass for the other. The results help to explain why fish in a pond often develop a stable population of numerous, small individuals, while e.g. hares or moose on an island, shielded from predation, develop a fluctuating population. |
| doi_str_mv | 10.2307/3544877 |
| format | Article |
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Stenseth</creator><creatorcontrib>Steen, Johan B. ; Steen, Harald ; Nils Chr. Stenseth</creatorcontrib><description>We have investigated how the population dynamics of two types of vertebrates is influenced by food shortage. One type consists of animals which show indeterminate growth rate (cut the coat to the cloth), e.g. fish. The other type includes animals which show a determinate type of growth rate (require a minimum daily food supply to survive), e.g. mammals and birds. To this end we have developed a model which assumes that animal biomass is regulated by food biomass alone (i.e. no predation), while food biomass follows self-regulating dynamics. The model predicts stable biomass for the first type of animals and unstable, cyclic biomass for the other. The results help to explain why fish in a pond often develop a stable population of numerous, small individuals, while e.g. hares or moose on an island, shielded from predation, develop a fluctuating population.</description><identifier>ISSN: 0030-1299</identifier><identifier>EISSN: 1600-0706</identifier><identifier>DOI: 10.2307/3544877</identifier><identifier>CODEN: OIKSAA</identifier><language>eng</language><publisher>Oxford: Munksgaard International Publishers, Ltd</publisher><subject>Animal and plant ecology ; Animal feeding behavior ; Animal, plant and microbial ecology ; Biological and medical sciences ; Biomass ; Biomass production ; Demecology ; Food availability ; Food shortages ; Food supply ; Forum ; Fundamental and applied biological sciences. 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The results help to explain why fish in a pond often develop a stable population of numerous, small individuals, while e.g. hares or moose on an island, shielded from predation, develop a fluctuating population.</description><subject>Animal and plant ecology</subject><subject>Animal feeding behavior</subject><subject>Animal, plant and microbial ecology</subject><subject>Biological and medical sciences</subject><subject>Biomass</subject><subject>Biomass production</subject><subject>Demecology</subject><subject>Food availability</subject><subject>Food shortages</subject><subject>Food supply</subject><subject>Forum</subject><subject>Fundamental and applied biological sciences. 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Psychology</topic><topic>General aspects</topic><topic>Homeotherms</topic><topic>Population dynamics</topic><topic>Predation</topic><topic>Vertebrata</topic><topic>Vertebrates</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Steen, Johan B.</creatorcontrib><creatorcontrib>Steen, Harald</creatorcontrib><creatorcontrib>Nils Chr. Stenseth</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Ecology Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><jtitle>Oikos</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Steen, Johan B.</au><au>Steen, Harald</au><au>Nils Chr. 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The model predicts stable biomass for the first type of animals and unstable, cyclic biomass for the other. The results help to explain why fish in a pond often develop a stable population of numerous, small individuals, while e.g. hares or moose on an island, shielded from predation, develop a fluctuating population.</abstract><cop>Oxford</cop><pub>Munksgaard International Publishers, Ltd</pub><doi>10.2307/3544877</doi><tpages>4</tpages></addata></record> |
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| ispartof | Oikos, 1991-03, Vol.60 (2), p.269-272 |
| issn | 0030-1299 1600-0706 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_16030357 |
| source | JSTOR Archive Collection A-Z Listing |
| subjects | Animal and plant ecology Animal feeding behavior Animal, plant and microbial ecology Biological and medical sciences Biomass Biomass production Demecology Food availability Food shortages Food supply Forum Fundamental and applied biological sciences. Psychology General aspects Homeotherms Population dynamics Predation Vertebrata Vertebrates |
| title | Population Dynamics of Poikilotherm and Homeotherm Vertebrates: Effects of Food Shortage |
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