RIVER LAND ECOTONES - SCALES AND PATTERNS

被引：29

作者：

BRETSCHKO, G

机构：

[1] Institute for Limnology, Austrian Academy of Sciences, Lunz/See, A-3293, Biological Station Lunz

来源：

HYDROBIOLOGIA | 1995年 / 303卷 / 1-3期

关键词：

RIVER LAND ECOTONES; RIVER CONTINUUM CONCEPT (RCC); PATCH RCC;

D O I：

10.1007/BF00034046

中图分类号：

Q17 [水生生物学];

学科分类号：

071004 ;

摘要：

On a continental scale a river system itself is an ecotone, mediating between the terrestrial system and the sea. On the landscape scale, ecotones appear between terrestrial and river systems. At decreasing scales, the number and diversity of ecotones increases. Ecotone processes are discussed in relation to the entire 'river' ecosystem, on scales ranging from the activity range of fish fry up to that of adult fish. The introduction of patch theory into the River Continuum Concept (RCC) allows for the proper consideration of hydraulics and time. The relationships between stream order and patch distribution, patch size and lifetime and age diversity of patches are described. This 'combination model' is much better adjusted to the situations occurring in nature than the original, very abstract RCC-model.

引用

页码：83 / 91

页数：9

共 25 条

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[2]

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[7]

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