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Geographic location alters the diversity-disturbance response

机译：地理位置改变了多样性干扰反应

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Despite extensive research on the link between disturbance and diversity in ecology and several eloquent models to describe the relationship, a universally applicable model remains elusive. However, most investigations of the diversity-disturbance relationship have been limited in spatial coverage. Recent theoretical and conceptual advances in macroecology suggest that such spatially constrained studies may limit interpretation. To explore the effect of geographic location on the disturbance-diversity relationship, we examined invertebrate assemblages in streams of northern Spain and New Zealand (NZ) and in multiple regions within NZ. Habitat characteristics were similar across all sites and locations, except that undisturbed sites (springbrooks) differed from disturbed sites (rhithral streams) by having constant thermal and hydrologic regimes. The resource base and the density of invertebrates were greater in the more-stable habitats in all regions. However, patterns of invertebrate species richness differed markedly between locations in the Northern and Southern Hemispheres. Springbrooks in all regions within NZ had greater richness than rhithral streams. In contrast, springbrooks in Spain had considerably lower species richness than rhithral streams. Thus, low hydrological disturbance in Spain yielded low diversity, whereas in NZ it yielded high diversity. Amphipoda dominated the springbrook faunas in Spain, whereas insects dominated in NZ. Thus, differences in the diversity patterns between Spain and NZ are potentially related to phylogenetic differences or environmental constraints on life-history cues. A universal model to link disturbance and diversity is more likely to be successful if it incorporates life-history traits rather than morphological traits.
机译：尽管对扰动与生态多样性之间的联系进行了广泛的研究，并用多种雄辩的模型来描述这种关系，但普遍适用的模型仍然难以捉摸。但是，大多数对分集-扰动关系的研究在空间覆盖上是有限的。宏观生态学的最新理论和概念进展表明，这种空间受限的研究可能会限制解释。为了探讨地理位置对干扰-多样性关系的影响，我们研究了西班牙北部和新西兰（NZ）以及新西兰境内多个地区的无脊椎动物组合。在所有地点和地点，生境特征都相似，不同之处在于不受干扰的地点（斯普林布鲁克）与受干扰的地点（旋流）由于具有恒定的热力和水文状况而不同。在所有区域中较稳定的栖息地中，无脊椎动物的资源基础和密度都更大。然而，北半球和南半球的无脊椎动物物种丰富度模式明显不同。纽西兰所有地区的斯普林布鲁克斯（Springbrooks）的富裕程度均高于莱茵河。相比之下，西班牙的斯普林布鲁克的物种丰富度要比莱茵河小得多。因此，西班牙的低水文扰动导致低多样性，而新西兰则产生高多样性。在西班牙，两栖动物占主导地位，而在新西兰，昆虫占主导地位。因此，西班牙和新西兰之间的多样性模式差异可能与生命史线索的系统发育差异或环境限制有关。如果将生活史特征而不是形态特征纳入其中，那么将干扰与多样性联系起来的通用模型更可能成功。

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