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Pakistan Journal of Biological Sciences
  Year: 2011 | Volume: 14 | Issue: 8 | Page No.: 483-489
DOI: 10.3923/pjbs.2011.483.489
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Taxocoenosis and Distribution of Nektonic Fauna in the Rice Fields of Kashmir (J and K) India

S.W.N. Bahaar and G.A. Bhat

Present study attempts to identify the taxocoenosis and distribution of nektonic fauna harbouring the rice field ecosystems of Kashmir. The main objective of the study was to provide an overview of the nektonic community composition and physiochemical characteristics of flood waters. 6 sites were selected in Kupwara, Bandipora, Budgam, Srinagar, Pulwama and Anantnag districts of valley Kashmir. A total of 26 taxa belonging to 13 different orders were reported during the study which commenced through 2 consecutive crop cycles. The taxocoenosis was dominated by Coleoptera (10 taxa) followed by Hemiptera (3 taxa), Diptera (2 taxa), Diplostraca (2 taxa), Acarina, Anostraca, Anura, Amphipoda, Basommatophora, Cypriniformes, Cyprinodontiformes, Odonata and Pulmonata (1 taxa each). Diversity was calculated using Simpsons Index (D), Simpsons Index of Diversity (1-D), Simpsons Reciprocal Index (1/D), Shannon-Weiner Index (H’), Margalef Richness Index (d) and Evenness Index (e). Kupwara (34°02’N; 74°16’E) formed the most diverse site registering a total of 2384 individuals belonging to 24 taxa. A perusal of the primary data related to the physicochemical attributes of flood waters exhibited that average water temperature varied between 19-30°C, average air temperature varied between 21 and 33°C. pH depicted a variation between 6.0 and 9.0, Dissolved Oxygen varied between a minimum of 1.0 mg L-1 and a maximum of 10 mg L-1. Free CO2 ranged between 0 mg L-1 and 6.1 mg-1. The results pressed the need for recognizing and preserving rice fields as potential habitats for organisms that have successfully adapted to the highly manipulated and eutrophic conditions of rice paddies.
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  •    Taxocoenosis and Distribution of Weed Flora in the Rice Field Monocultures of Kashmir Valley (J and K) India
  •    Community Structure and Distribution of Epigeal-cum-herb Layer Fauna in the Rice Fields of Kashmir (J and K) India
  •    Community Organization and Distribution of Lepidoptera in the Rice Fields of Kashmir (J and K) India
  •    Fauna Aquatic Insects in Sewage Maturation Ponds of Kashan University of Medical Science 2005
  •    A Survey on the Faunal Diversity of Savar Upazila, Dhaka, Bangladesh
  •    Diversity and Community Structure of Aquatic Arthropods in an Irrigated Rice Ecosystem of Tamil Nadu, India
  •    Comparative Study of Herbaceous Vegetation in Lower Dachigam National Park, Kashmir Himalaya, India
How to cite this article:

S.W.N. Bahaar and G.A. Bhat, 2011. Taxocoenosis and Distribution of Nektonic Fauna in the Rice Fields of Kashmir (J and K) India. Pakistan Journal of Biological Sciences, 14: 483-489.

DOI: 10.3923/pjbs.2011.483.489






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