Inny tytuł:

Species, density and weight distributions

Współtwórca:

Polish Academy of Sciences. Institute of Ecology

Wydawca:

Polish Academy of Sciences. Institute of Ecology. Publishing Office

Miejsce wydania:

Dziekanów Leśny

Opis:

Strony 87-101 : ilustracje ; 27 cm ; Bibliografia na stronach 100-101

Typ obiektu:

Czasopismo/Artykuł

Abstrakt:

This paper tests the hypothesis that the density – weight distribution of species assemblages may be generated alone by underlying weight dependent density fluctuations by constructing several model species – weight and density – weight distributions. The simulations revealed that indeed even a slight dependence of density fluctuation on body weight generated typical density – weight distributions with upper density boundaries and triangular shapes. Other ecological explanations, such as metabolic constraints or arguments based on fractal geometry, may therefore not be necessary to explain the pattern. In a second step of analysis the density – weight relationship was combined with various species – weight distributions (computed over log2 weight classes) to show that in nearly all parameter settings steadily rising biomass distributions with a decline only towards the largest weight classes result. The generality of the equal biomass hypothesis is therefore rejected. A general model is developed to explain several of the patterns in density – weight and species – weight plots assuming only underlying weight dependent speciation and extinction rates and weight dependent density fluctuations.

Bibliografia:

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Czasopismo/Seria/cykl:

Polish Journal of Ecology

Tom:

47

Zeszyt:

1

Strona pocz.:

87

Strona końc.:

101

Szczegółowy typ zasobu:

Artykuł

Identyfikator zasobu:

oai:rcin.org.pl:106118 ; ISSN 1505-2249

Źródło:

MiIZ PAN, sygn. P.2840 ; kliknij tutaj, żeby przejść

Język:

eng

Język streszczenia:

Prawa:

Licencja Creative Commons Uznanie autorstwa 3.0 Polska

Zasady wykorzystania:

Zasób chroniony prawem autorskim. [CC BY 3.0 PL] Korzystanie dozwolone zgodnie z licencją Creative Commons Uznanie autorstwa 3.0 Polska, której pełne postanowienia dostępne są pod adresem: ; -

Digitalizacja:

Muzeum i Instytut Zoologii Polskiej Akademii Nauk

Lokalizacja oryginału:

Biblioteka Muzeum i Instytutu Zoologii PAN

Dofinansowane ze środków:

Program Operacyjny Polska Cyfrowa, lata 2014-2020, Działanie 2.3 : Cyfrowa dostępność i użyteczność sektora publicznego; środki z Europejskiego Funduszu Rozwoju Regionalnego oraz współfinansowania krajowego z budżetu państwa

Dostęp:

Otwarty