Macro-invertebrate Diversity and its Relationship with Environmental Variables in Adha Lake between Monsoon and Post-monsoon SeasonsLhundup, Karma .; Dorji, Ugyen .;
Lentic water bodies are amongst the most threatened wetland habitat types as anthropogenic disturbances have significantly influenced the structure and function of aquatic ecosystems. This study compared the seasonal variations of macro-invertebrate diversity and analysed the physiochemical parameters to study the influence of surrounding land use on the ecosystem of Adha Lake. Macro-invertebrate abundance in the lake was used as an indicator to assess the effect of surrounding land use. The lake was categorised into four major zones namely agriculture zone, forest east zone, catchment zone, and forest west zone. Sampling was carried out along the littoral zone of the lake. Physiochemical variables were collected for both the seasons. Chironomidae and Baetidae families were the most dominant macro-invertebrates in the lake. The least families encountered were Acrididae, Aeshnidae, Tabanidae, Hydrophilidae, and Libellulidae during monsoon season, and Simuliidaeand Culicidae for post-monsoon season. There was no significant difference in Shannon Wiener’s Diversity Index for monsoon and post-monsoon seasons, p> .05. pH, salinity, conductivity, total dissolved solid, and water temperature had negative correlation with diversity and richness; however, total dissolved solid, water temperature, and pH had positive association with taxon evenness. The HKH-bios index and NHBL index indicated that the lake is polluted which could be attributed to discharge from the paddy fields. Restoration and protection of Adha Lake as White-bellied heron’s habitat may need significant conservation and advocacy measures.
Keywordsmacro-invertebrate, pH, salinity, temperature, water conductivity, White-bellied Heron
Alagoa, K.J. and Aleleye-Wokoma, I.P. (2012). Human Induced Variations of Selected Physico- chemical Parameters of Taylor Creek in the Niger Delta, Bayelsa State, Nigeria, Resources and Environment. 2(2): 45-50. doi: 10.5923/j.re.20120202.07
Benetti, C.J. and Garrido, J. (2010). The influence of stream habitat and water quality on water beetles assemblages in two rivers in northwest Spain, Vieet Milieu. 60(1): 53-63.
Bosquet, Y. (1990).Beetles associated with stored products in Canada: an identification guide. Agriculture Canada.
Brraich, O.S. and Kaur, R. (2017).Temporal composition and distribution of benthic macro- invertebrates in wetlands, Current Science. 112(1): 116-125. DOI: 10.18520/cs/v112/i01/ 116-125.
Chatzinikolaou, Y. and Lazaridou, M. (2007). Identification of the self-purification stretches of the Pinios River, Central Greece, Mediterranean Marine Science. 8(2): 19-32.
Choate, P.M. (1999). Introduction to the identification of beetles (Coleoptera), Dichotomous Keys to some Families of Florida Coleoptera, Entomo Mont Mag. 102: 156-162.
Clenaghan, C., Giller, P.S., Ohalloran, J. and Hernan, R. (1998). Stream macroinvertebrate communities in a conifer-afforested catchment in Ireland: relationships to physico-chemical and biotic factors, Freshwater Biology. 40(1): 175-193. DOI: 10.1046/j.1365-2427.1998.00330.x.
Coffman, W.P. and FerringtonJr, L.C. (1996).Chironomidae, An introduction to the aquatic insects of North America. 3: 635-754.
Dhakal, S. (2006). Study on Physiochemical Parameters and Benthic Macroinvertebrates of BalkhuKhola in Kathmandu Valley, Central Nepal: Management of water, wastewater and environment, Challenges for the developing countries, Kathmandu. Nepal.
Dorji.T. (2014).Macroinvertebrates diversity in response to environmental variables in headwater streams (Project Report). Royal University of Bhutan: Thimphu.
Dunlop, J., McGregor, G. and Horrigan, N. (2005).Potential impacts of salinity and turbidity in riverine ecosystems. Queensland. ISBN: 1 74172 0788
Efitre, J., Chapman, L.J. and Makanga, B. (2001). The inshore benthic macroinvertebrates of lakeNabugabo, Uganda: seasonal and spatial patterns, African Zoology. doi:org/10.1080/ 15627020.2001.11657139.
Fernandez-Diaz, M. and Benetti, C. (2008).Influence of iron and nitrate concentration in water on aquatic Coleoptera community structure: application to the Avia river.Spain: Ourense.
Foote, B. (1987). Chironomidae, Immature Insects.762-764.
Hartmann, A. (2006). Key to Odonata (Dragonflies and Damselflies) of the HKH Region. Presented in Regional Capacity Building Workshop on the Macro-Invertebrates’ Taxonomy and Systematics for Evaluating for the Ecological Status of Rivers in the Hindu Kush-Himalayan (HKH) Region.
Hepp, L.U. and Santos, S. (2009). Benthic communities of streams related to different land uses in a hydrographic basin in southern Brazil, Environmental monitoring and Assessment. 157(1-4): 305-318. DOI: 10.1007/s10661-008-0536-7.
Jigme SingyeWangchuck Nation Park. (2014). Jigme SingyeWangchuck National Park: Biodiversity action plan. Department of Forest and Park Services, Ministry of Agriculture and Forest: Royal Government of Bhutan.
Kasangaki, A., Chapman, L.J. and Balirwa, J. (2008).Land use and the ecology of benthic macro- invertebrate assemblages of high‐altitude rainforest streams in Uganda, Freshwater Biology. 53(4): 681-697. doi:10.1111/j.1365-2427.2007.01925.x.
Korte, T., Baki, A.B.M., Ofenböck, T., Moog, O., Sharma, S. and Hering, D. (2010).Assessing river ecological quality using benthic macroinvertebrates in the Hindu Kush-Himalayan region. Hydrobiologia. 651(1): 59-76.
McGinley, M. (2014).Species richness.<http://:www.eoearth.org>. Accessed on March 15, 2016.
Millennium Ecosystem Assessment. (2005). Ecosystems and Human Well-being: Wetlands and Water Synthesis. Washington, DC: World Resources Institute.
Morihara, D.K. and McCafferty, W.P. (1979). The Baetis larvae of North America (Ephemero- ptera: Baetidae), Transactions of the American Entomological Society. 105(2): 139-221.
Negi, R.K. and Mamgain, S. (2013). Seasonal variation of benthic macro invertebrates from Tons River of Garhwal Himalaya Uttarakhand, Pakistan Journal of Biological Sciences. 16(22): 1510. DOI:10.3923/pjbs.2013.1510.1516.
Nesemann, H., Shah, R.D.T. and Shah, D.N. (2011).Key to the larval stages of common Odonata of Hindu Kush Himalaya, with short notes on habitats and ecology, Journal of threatened Taxa. 3(9): 2045-2060. doi: 10.11609/JoTT.02759.2045-60.
Pescador, M.L., Rasmussen, A.K., Richard, B.A. and McCarron, E. (2000). A guide to the stoneflies (Plecoptera) of Florida.State of Florida, Department of Environmental Protection, Division of Water Resource Management.
Shah, R.D.T., Shah, D.N. and Nesemann, H. (2011). Development of a macroinvertebrate-based Nepal Lake Biotic Index (NLBI): an applied method for assessing the ecological quality of lakes and reservoirs in Nepal, International Journal of Hydrology Science and Technology. 1(2): 125-146. doi: 10.1504/IJHST.2011.040744.
Stubbington, R., Wood, P.J. and Boulton, A.J. (2009). Low flow controls on benthic and hyporheic macroinvertebrate assemblages during supra-seasonal drought, Hydrological Processes. 23(15): 2252-2263. doi: 10.1002/hyp.7290.
Sutherland, A.B., Meyer, J.L. and Gardiner, E.P. (2002). Effects of land cover on sediment regime and fish assemblage structure in four southern Appalachian streams, Freshwater Biology. 47(9): 1791-1805. doi: 10.1046/j.1365-2427.2002.00927.x.
Wilson, E. (1992). The diversity of life.New York: W.W. Norton and Company INC.
Yuan, L.L. (2004). Assigning macroinvertebrate tolerance classifications using generalized additive models, Freshwater Biology. 49(5): 662-677. doi: 10.1111/j.1365-2427.2004. 01206.x.
Zinabu, G.M. (2002). The effects of wet and dry seasons on concentrations of solutes and phytoplankton biomass in seven Ethiopian rift-valley lakes, Limnologica-Ecology and Management of Inland Waters. 32(2): 169-179. doi: http://dx.doi.org/10.1016/S0075-9511(02)80006-8.