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Titre de l'article

Repenser les effets de l'isolation et de la taille de parcelle : l'hypothese de la quantite d'habitat

Introduction à l'article

The author challenged the notions of how habitat patches represent natural units of measurement and how the size of habitat patches and isolations affect species richness, which was circulated among scholars in the field of biodiversity. In addition, has proposed a more simplistic view, how species richness and habitat dispersion associate each other (i.e., the ‘habitat amount hypothesis’).

Expériences de l'article

The author employed the following distinct methods to test the proposed hypothesis.
1 Patch size effect, which determined by the appropriate comparisons of the slopes of species-area versus sample area that are in the same continuous habitat region.
2 Patch isolation effect, which would typically depend upon an experimental testing

Résultats de l'article

The proposed hypothesis replaces the following two independent variables i.e., patch size and patch isolation by a single variable, habitat amount.
The author has noted that if this hypothesis would be supported and tested using experiments it could serve as a tool to predict habitat distribution and species richness.
This hypothesis postulates the habitat patches in a matrix of the non-habitat. In addition, it predicts the species abundance in equal-sized sample sites should increase with the combined number of habitats in the given territory, which practically considers an appropriate distance inside the sample site. The author has also noted that the habitat amount hypothesis allows predicting the species richness in a given sample site independent from the local patch.

Rigueur de l'article

The author proposed a new hypothesis ‘ the habitat amount hypothesis’ that associates patch size and patch isolation by a single variable, habitat amount. And if this would be supported and tested using experiments it could serve as a tool to predict habitat distribution and species richness.

Ce que cet article apporte au débat

The author raised some questions that can directly or indirectly related to the idea of the ‘habitat patch concept’, which has been uncertain in how to delineate ecologically relevant patches. Therefore, this assumption remains poorly constrained by experimental methods and is still open to question.

Publiée il y a plus de 5 ans par T.G. Bedane.
Dernière modification il y a plus de 5 ans.
Article : Rethinking patch size and isolation effects: the habitat amount hypothesis