Bitte verwenden Sie diesen Link, um diese Publikation zu zitieren, oder auf sie als Internetquelle zu verweisen: https://hdl.handle.net/10419/18994 
Kompletter Metadatensatz
Erscheint in der Sammlung:
DublinCore-FeldWertSprache
dc.contributor.authorChristiaans, Thomasen
dc.contributor.authorChristiaans, Thomasen
dc.contributor.authorPethig, Rüdigeren
dc.date.accessioned2009-01-28T15:54:19Z-
dc.date.available2009-01-28T15:54:19Z-
dc.date.issued2005-
dc.identifier.urihttp://hdl.handle.net/10419/18994-
dc.description.abstractIn this paper we develop a micro ecosystem model whose basic entities are representativeorganisms which behave as if maximizing their net offspring under constraints. Net offspringis increasing in prey biomass intake, declining in the loss of own biomass to predators andAllee's Law applies. The organism's constraint reflects its perception of how scarce its ownbiomass and the biomass of its prey is. In the short-run periods prices (scarcity indicators)coordinate and determine all biomass transactions and net offspring which directly translatesinto population growth functions. We are able to explicitly determine these growth functionsfor a simple food web when specific parametric net offspring functions are chosen in themicro-level ecosystem model. For the case of a single species our model is shown to yield thewell-known Verhulst-Pearl logistic growth function. With two species in predator-preyrelationship, we derive differential equations whose dynamics are completely characterizedand turn out to be similar to the predator-prey model with Michaelis-Menten type functionalresponse. With two species competing for a single resource we find that coexistence is aknife-edge feature confirming Tschirhart's (2002) result in a different but related model.en
dc.language.isoengen
dc.publisher|aCenter for Economic Studies and ifo Institute (CESifo) |cMunichen
dc.relation.ispartofseries|aCESifo Working Paper |x1530en
dc.subject.jelQ20en
dc.subject.ddc330en
dc.subject.keywordspeciesen
dc.subject.keywordgrowthen
dc.subject.keywordextinctionen
dc.subject.keywordpredator-prey relationsen
dc.subject.keywordresource competitionen
dc.subject.stwErneuerbare Ressourcenen
dc.subject.stwBioökonomiken
dc.subject.stwMikroökonomische Fundierungen
dc.subject.stwTheorieen
dc.subject.stwRäuber-Beute Modellen
dc.titleA micro-level 'consumer approach' to species population dynamics-
dc.typeWorking Paperen
dc.identifier.ppn500838720en
dc.rightshttp://www.econstor.eu/dspace/Nutzungsbedingungenen

Datei(en):
Datei
Größe
616.71 kB





Publikationen in EconStor sind urheberrechtlich geschützt.