近日，國際著名雜志Science上刊登的一篇研究報(bào)告中,，日本的研究人員報(bào)告說,，在物種間的不同類型的相互作用可幫助穩(wěn)定某個(gè)群落。
在許多情況下,，多個(gè)物種可幫助某個(gè)生態(tài)系統(tǒng)的恢復(fù)能力,，但新的結(jié)果顯示，相互作用類型的多樣性——諸如掠食,、競(jìng)爭(zhēng)和互利共生——也是重要的,。到現(xiàn)在為止，大多數(shù)的研究只針對(duì)一種單一的相互作用類型,。Akihiko Mougi 和 Michio Kondoh用一種理論模型顯示,，生態(tài)關(guān)系的多樣性可穩(wěn)定某個(gè)群落的種群數(shù)量動(dòng)態(tài)，且它可能是維持其生物多樣性本身的關(guān)鍵,。
此外,，在該所謂的“互動(dòng)多樣性”存在的情況下，一個(gè)較為復(fù)雜的群落會(huì)比一個(gè)較為不復(fù)雜的群落更穩(wěn)定,。這些發(fā)現(xiàn)因而可能為一種復(fù)雜的生態(tài)系統(tǒng)是如何在自然界持續(xù)存在的這一經(jīng)典悖論提出解答,，因?yàn)樯鷳B(tài)學(xué)理論預(yù)測(cè)由多個(gè)物種組成的一個(gè)復(fù)雜的群落在本質(zhì)上是不穩(wěn)定的。（生物谷Bioon.com）
doi:10.1126/science.1220529
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Diversity of Interaction Types and Ecological Community Stability
A. Mougi1, M. Kondoh1,2,*
Ecological theory predicts that a complex community formed by a number of species is inherently unstable, guiding ecologists to identify what maintains species diversity in nature. Earlier studies often assumed a community with only one interaction type, either an antagonistic, competitive, or mutualistic interaction, leaving open the question of what the diversity of interaction types contributes to the community maintenance. We show theoretically that the multiple interaction types might hold the key to understanding community dynamics. A moderate mixture of antagonistic and mutualistic interactions can stabilize population dynamics. Furthermore, increasing complexity leads to increased stability in a “hybrid” community. We hypothesize that the diversity of species and interaction types may be the essential element of biodiversity that maintains ecological communities
