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Journal of Desert Research ›› 2020, Vol. 40 ›› Issue (6): 250-258.DOI: 10.7522/j.issn.1000-694X.2020.00033

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Comparison of ground arthropod community between Lake Wetland and adjacent sand dune in Heihe River Basin

Liuwen Dong1(), Jialong Han2, Wenzhi Zhao3, Jiliang Liu3(), Yibin Ba4   

  1. 1.College of Resource and Environment Sciences / MOE Key Laboratory of Oasis Ecology,Xinjiang University,Urunqi 830046,China
    2.College of Agriculture and Ecological Engineering,Hexi University,Zhangye 734000,Gansu,China
    3.Linze Inland River Basin Research Station,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China
    4.Museum of Hebei University,Baoding 071002,Hebei,China
  • Received:2020-01-23 Revised:2020-04-21 Online:2020-12-09 Published:2020-12-09
  • Contact: Jiliang Liu

Abstract:

Lake wetland was an important habitat type in the Heihe River Basin, and its play a key role in maintaining terrestrial arthropods diversity. However, our understanding of the effect of lake wetland on arthropod diversity in this region is poor, especially on ground-dwelling arthropods. We select a typical lake wetland and the adjacent sand dune as a research region in the Middle Reaches of the Heihe River basin. We explored the abundance and species richness of ground arthropods using pitfall trapping at the three habitats (wetland, transitional zone and sand dune) in the mid-July. Three key results were obtained as following. (1) The community composition of ground-dwelling arthropods in wetland, transitional area and dune habitat is significantly different. Further, the activity density, taxa richness and diversity index of ground-dwelling arthropods in wetland habitats are significantly higher than those in sand dune habitat, and the taxa richness and diversity index of ground-dwelling arthropods in transitional zone are significantly higher than those in sand dune habitats. (2) The composition of predatory, herbivorous and “saprophagous + omnivorous” ground-dwelling arthropods in wetland, transitional area and dune habitat is obviously different. From wetland to sand dune, the activity and richness of predatory and herbivorous ground-dwelling arthropods are decreasing, while the richness of “saprophagous + omnivorous” ground-dwelling arthropods is changing in the opposite pattern. (3) A strong indication of ground-dwelling arthropods for habitat type was discovered in this ecosystem. Moreover, seven taxa including lycosid spiders, carabid and cicindelid beetles can be used as indicator taxa for wetland habitats, and trgossitid and tenebrionid beetles and can be used as indicator taxa for transitional zone and sand dune habitats. In short, wetland habitat in arid area has obvious conservation affect on some ground-dwelling arthropods, such as lycosid spiders and carabid and cicindelid beetles. It has important ecological significance for the protection and maintenance of these ground-dwelling arthropods.

Key words: Heihe River Basin, lake wetland, ground-dwelling arthropods, community structure, trophic function

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