Volume : X, Issue : VII, July - 2020

Ecological impact of macrophytes on some fresh water bodies in dehradun district.

Vanadana Tewari, Deepak Kumar Mittal

Abstract :

Study of ecological impact of macrophytes on fresh water bodies in dehradun district were undertaken during the year 2019 to March 2020. Ten species were observed belonging to different classes, out of which Hydrilla verticillata (L.F.) Royle, Chara spp, Potamogteon pectinatus L, Najas minor L. and Ceratophyllum demersum L. were found to be dominating. During most of the year, surface of the water, especially in the shallow areas were found to be covered with these macrophytes. However Hydrilla verticillata (L.F.) Royle, a rooted submerged weed was observed to be dominant on other weeds. Other less dominant macrophytes found in the fresh water bodies were Ottelia alismoides (L.) Pers., Typha angustata Bory and Choub., Vallisneria spiralis L. and Limnophylla sessiflora L.. These macrophytes were found to be responsible for reducing water storage capacity in the fresh water bodies and also cause tremendous loss of surface water of the dam through evapotranspiration. Macrophytes also reduce pond productivity by causing accumulation of silts. Due to excessive growth after death, the plants produce excess amount of nutrients which pollute the water and impart faul smell to the water. Therefore the rapid spread of aquatic weeds in the fresh water bodies in dehradun district by vegetative and other means is creating serious socio–economic problems, causing enormous economic loss of water resources

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Article: Download PDF    DOI : 10.36106/ijar  

Cite This Article:

ECOLOGICAL IMPACT OF MACROPHYTES ON SOME FRESH WATER BODIES IN DEHRADUN DISTRICT., Vanadana Tewari, Deepak Kumar Mittal INDIAN JOURNAL OF APPLIED RESEARCH : Volume-10 | Issue-7 | July-2020

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