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2 documents found tagged collectors [X]
  • Title
    Variations in benthic macroinvertebratefauna as indicator of land use in the Ken River, central India
    Type
    Journal Article
    Description
    Examination of benthic macroinvertebrates in semi-natural, urban and agricultural land use along the highland Ken River in central India reveals a significantly higher density in semi-natural compared with other two landuse. Insects dominate the fauna at semi-natural (90%) and urban locations (93%) compared to agriculture sites (48%) where where annelid share increases to 32%. The semi-natural location characterized by rocky substrate support high relative abundance of Caenidae and Neoephemeridae. Their abundance decreases at urban locations. Brachycentridae, Chironomidae, Glossocolecidae, Nephthydae, Thiaridae and Corbiculidae increased at urban and agriculture locations characterized by small-sized sediments, suggesting important role for substrate also. Ordination shows that the Caenidae and Heptageniidae are characteristic at semi-natural location, Leptophlebiidae, Hydropsychidae, Glossosomatidae at urban while Thiaridae and Chironomidae at agricultural locations. Functionally, the collectors dominate the fauna, as all three landuse, especially large tracts of agriculture, are a continuous source of particulate organic matter (POM) in the river.
    Attribution
    Nautiyal P., Mishra A.S. (2013). Journal of Threatened Taxa 7(5) pp. 4096-4105; doi:10.11609/JoTT.o3211.4096-105
  • Title
    Functional composition of benthic macroinvertebrate fauna in the plateau rivers, Bundelkhand, central India
    Type
    Journal Article
    Description
    The functional organization of benthic macroinvertebrate fauna was studied in two central Indian rivers of Bundelkhand region, the Ken and Tons. Both the rivers are approximately 320km from source to mouth. The taxonomic richness in both the rivers decreased in the mouth zone of the river. Functionally, both rivers were in heterotrophic state from headwater to mouth, as share of collectors among other functional groups was high all along the river. However, the share of collectors decreased from the headwater to mouth in both the rivers, while scrapers and predators increased in the Ken but no trend was evident in the Tons.
    Attribution
    Mishra A.S., Nautiyal P. (2013). Journal of Threatened Taxa 13(5) pp. 4752-4758; doi:10.11609/JoTT.o3226.4752-8