Freshwater diversity

Topics: Water, Shannon index, Measurement of biodiversity Pages: 4 (1593 words) Published: October 31, 2014

Macro-Invertebrate diversity and density in run and pool habitat of Okaloom stream under Toeb geog: A report Submitted by: Damcho Lhamo (CNR0113147), Dorji (CNR0113149), Dorji Wangdi (CNR0113150), Nagphel (CNR0113159), Sonam Wangchuk (CNR0113175), Ugyen Lhendup (CNR0113188) and Wangchuk (CNR0113191)
INTRODUCTION
Wetland ecosystems are diverse ecosystems with fluctuating water levels, periods of oxygen stress, hydric soils with varied hydrological conditions. They are an important functional part of the landscape (Mitsch and Gosselink, 2000). Among the inhabitants of the wetlands, the macro-invertebrates are in close contact with water and are affected by changing water quality, periods of anoxia, accumulating organic matter (Craft, 2000). Aquatic macro-invertebrates have been found sensitive to changes in their environment and a feature that has been proven useful in the quest to find indicators of environmental conditions. The community characteristics of macro-invertebrates, such as diversity and richness, are often used as indicators of the degree of pollution of water bodies to supplement and deepen the meanings of physico-chemical information (Abel 1989, Arimoro et al. 2007, Barton 1996, Hellawell 1978, Plafkin et al. 1989, Silva et al. 2009, Wright et al. 1984). In order to achieve and maintain the highest water quality in lakes, rivers, and streams, environmental advocates are using the resident organisms living in these waters as sensitive indicators of change. The following are specific research question and objective. Research question

Where would the Macro-Invertebrate diversity and density be high in two different site conditions? Objective
The prime objective of the study was to compare macro-invertebrate diversity and richness in run and pool habitat. METERIAL AND METHOD
Study site
Okaloom stream is lactated below Lumitsawa village under Toeb geog. The stream runs through cool...

References: Abel.P. D., John. W & Sons, (1989). Water Pollution Biology. New York, USA.
Arimoro. F.O., Ikomi R.B., Efemuna. E. ( 2007) Macro-invertebrate community patterns and diversity in relation to water quality status of River Ase: Niger Delta, Nigeria.
Barton
Craft. C., (2000). Co-development of wetland soils and benthic invertebrate communities following salt marsh creation. Wetlands Ecology and Management 8: 197-207.
Hellawell. J.M., B.(1978). Biological Surveillance of Rivers: a biological monitoring handbook. England, Natural Environmental Research Council, Water Research Centre.
Mitsch.W.J., and Gosselink. J, (2000). Wetlands. 3rd edition. New York, USA, 920 pp.
Wright.F., Moss.D., Armitage. D., Fuse.T. (1984). A preliminary classification of running-water sites in Great Britain based on macroinvertebrate species and the prediction of community type using environmental data. Fresh water Biol 1984; 14:221-256.
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