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- W948397658 abstract "A palyazat alapkerdese a versenges es egyutteles, szelekcio es sokfeleseg viszonya ugy okologiai, mint evolucios szempontbol: okologiaban niche elmelet; evolucioelmeletben fajkeletkezes. Okologiai eredmenyeink legfontosabbika a korlatozott hasonlosag modell-fuggetlen elmelete, amely az egyutteles robusztussagat osszekoti az egyuttelő fajok kozotti - pontos matematikai ertelemben vett - niche szegregacioval. Az altalanos osszefugges konkret megnyilvanulasait specifikus esetekben vizsgaltuk, a klasszikus Lotka-Volterra versengesi modelltől a terben strukturalt, illetve időben fluktualo esetekig. Evolucios kutatasaink a divergens evolucio lehetősegeről szolnak. Az adaptiv dinamika elmeletenek egy uj megalapozasat adtuk meg, amely azt a populaciodinamikabol vezeti le a kis evolucios lepesek feltetelezesevel. Biologiailag ez a populacioregulacio es az adaptiv tajkep fogalma osszekapcsolasanak felel meg es megalapozza a szetagazo evolucio niche-szetvalaskent valo ertelmezeset. A fajkeletkezesi problema masik oldalat, a reproduktiv izolacio letrejottet egy analitikusan kezelhető minimal-modellben vizsgaltuk. A palyazat eredmenyeiből 13 nemzetkozi publikacio szuletett, amelyek egyuttes impakt faktora 38. | The basic issue of the work, reported here, is the relationship between competition and coexistence; selection and diversity from ecological as well as from evolutionary point of view. In ecology it corresponds to niche theory; in evolutionary theory it is speciation. Our most important ecological result is a model-independent theory of limiting similarity. It connects robustness of coexistence to niche differentiation in a precise mathematical way. We studied the implementations of this general framework in several specific cases from the classical Lotka-Voltarra model to spatially explicit and temporally fluctuating situations. Our evolutionary investigations are concerned about divergent evolution. A new underpinning of adaptive dynamics was introduced: it was derived from the explicitly considered underlying population dynamics with the single assumption of evolution via small steps. From biological point of view it corresponds to establishing a connection between the notions of adaptive landscape and population regulation. The other side of the speciation problem, the emergence of reproductive isolation was studied in an analytically tractable minimal model. We published 13 papers with cumulative impact factor 38." @default.
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- W948397658 date "2009-01-01" @default.
- W948397658 modified "2023-09-23" @default.
- W948397658 title "Adaptív ökológia változó környezetben = Adaptive ecology in variable environment" @default.
- W948397658 hasPublicationYear "2009" @default.
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