Fish determine macroinvertebrate food webs and assemblage structure in Greenland subarctic streams

Gonzalez-Bergonzoni I., Landkildehus F., Meerhoff M., Lauridsen T. L., Özkan K., Davidson T. A., ...More

FRESHWATER BIOLOGY, vol.59, pp.1830-1842, 2014 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 59
  • Publication Date: 2014
  • Doi Number: 10.1111/fwb.12386
  • Journal Name: FRESHWATER BIOLOGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1830-1842
  • Keywords: arctic streams, climate change, fish colonisation, Layman's community-wide metrics, top-down effect, COMMUNITY-WIDE MEASURES, ISOTOPE RATIOS PROVIDE, FRESH-WATER MACROINVERTEBRATES, CLIMATE-CHANGE, TROPHIC STRUCTURE, TOP-DOWN, CONSEQUENCES, PREDATION, CARBON, MODEL
  • Middle East Technical University Affiliated: Yes

Abstract

1. Climate warming in (sub) arctic regions is expected to increase freshwater fish overwinter survival and dispersal, potentially with strong implications for macroinvertebrate assemblage composition and ecosystem processes. Several studies worldwide have shown large effects of top predators (usually fish) on macroinvertebrates in streams. However, the influence of top predators on trophic diversity, the range of food resources exploited and trophic niche redundancy is less well studied, particularly in cold regions.