Impact of the Low Head Dam/Barrage on Fisheries – A Case Study of Giri River of Yamuna Basin (India)
Shannon’s diversity index H’ = pi log2 pi was calculated for 16 fish species. The index was resolved into its components, species richness and relative abundance, to determine which components played a larger role in the determination of diversity pattern. Changes in diversity were correlated with s...
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doaj-fe44cf449ab9415ea4b822049275b5b42021-09-05T20:51:33ZengSciendoTransylvanian Review of Systematical and Ecological Research2344-32192015-12-0117211913810.1515/trser-2015-0070trser-2015-0070Impact of the Low Head Dam/Barrage on Fisheries – A Case Study of Giri River of Yamuna Basin (India)Rumana Harcharan Singh0Jeeva Veliachamy1Kumar Sudhir2 Govind Sustainability Solution Pvt Ltd, Gyan Khand-1, Plot 27, Flat SF04, Indirapuram, Ghaziabad, IN-201014, India Environment Management Division, Indian Council of Forestry Research and Education, PO New Forest, Dehradun, India, IN-248006 Environment Management Division, Indian Council of Forestry Research and Education, PO New Forest, Dehradun, India, IN-248006Shannon’s diversity index H’ = pi log2 pi was calculated for 16 fish species. The index was resolved into its components, species richness and relative abundance, to determine which components played a larger role in the determination of diversity pattern. Changes in diversity were correlated with species richness (r), habitat heterogeneity, and hydrological regimes in a longitudinal stretch of 35 km along the river Giri, a major tributary of the Yamuna River system, in Western Himalayas. Abundance differs with change in habitat structures, habitat preference of fish species and water regimes. The decrease in diversity in the lower stretch of about 3-4 km upstream of the barrage was found to be associated with habitat fragmentation and as well as d/s with loss of biotic integrity of aquatic ecosystem due to water scarcity. Species richness was found to be maximum at upper and middle reaches (elevation 650-800 m, msl) of the river, whereas it was low in lower reaches. Change in water chemistry was also noticed at Jatan barrage-low head dam due to impoundment of river water. It is inferred that the regulation of water has an impact on species richness and relative abundance, and on habitat heterogeneity which has decreased due to the change in environmental condition.https://doi.org/10.1515/trser-2015-0070indiawestern himalayashabitat structure and fragmentationwater chemistrybiotic integrityfish |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Rumana Harcharan Singh Jeeva Veliachamy Kumar Sudhir |
spellingShingle |
Rumana Harcharan Singh Jeeva Veliachamy Kumar Sudhir Impact of the Low Head Dam/Barrage on Fisheries – A Case Study of Giri River of Yamuna Basin (India) Transylvanian Review of Systematical and Ecological Research india western himalayas habitat structure and fragmentation water chemistry biotic integrity fish |
author_facet |
Rumana Harcharan Singh Jeeva Veliachamy Kumar Sudhir |
author_sort |
Rumana Harcharan Singh |
title |
Impact of the Low Head Dam/Barrage on Fisheries – A Case Study of Giri River of Yamuna Basin (India) |
title_short |
Impact of the Low Head Dam/Barrage on Fisheries – A Case Study of Giri River of Yamuna Basin (India) |
title_full |
Impact of the Low Head Dam/Barrage on Fisheries – A Case Study of Giri River of Yamuna Basin (India) |
title_fullStr |
Impact of the Low Head Dam/Barrage on Fisheries – A Case Study of Giri River of Yamuna Basin (India) |
title_full_unstemmed |
Impact of the Low Head Dam/Barrage on Fisheries – A Case Study of Giri River of Yamuna Basin (India) |
title_sort |
impact of the low head dam/barrage on fisheries – a case study of giri river of yamuna basin (india) |
publisher |
Sciendo |
series |
Transylvanian Review of Systematical and Ecological Research |
issn |
2344-3219 |
publishDate |
2015-12-01 |
description |
Shannon’s diversity index H’ = pi log2 pi was calculated for 16 fish species. The index was resolved into its components, species richness and relative abundance, to determine which components played a larger role in the determination of diversity pattern. Changes in diversity were correlated with species richness (r), habitat heterogeneity, and hydrological regimes in a longitudinal stretch of 35 km along the river Giri, a major tributary of the Yamuna River system, in Western Himalayas. Abundance differs with change in habitat structures, habitat preference of fish species and water regimes. The decrease in diversity in the lower stretch of about 3-4 km upstream of the barrage was found to be associated with habitat fragmentation and as well as d/s with loss of biotic integrity of aquatic ecosystem due to water scarcity. Species richness was found to be maximum at upper and middle reaches (elevation 650-800 m, msl) of the river, whereas it was low in lower reaches. Change in water chemistry was also noticed at Jatan barrage-low head dam due to impoundment of river water. It is inferred that the regulation of water has an impact on species richness and relative abundance, and on habitat heterogeneity which has decreased due to the change in environmental condition. |
topic |
india western himalayas habitat structure and fragmentation water chemistry biotic integrity fish |
url |
https://doi.org/10.1515/trser-2015-0070 |
work_keys_str_mv |
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