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Shekhar, M. S.
- Recent Wintertime Climatic Variability over the North West Himalayan Cryosphere
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Authors
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1 Snow and Avalanche Study Establishment, Him Parisar, Sector 37A, Chandigarh 160 036, IN
1 Snow and Avalanche Study Establishment, Him Parisar, Sector 37A, Chandigarh 160 036, IN
Source
Current Science, Vol 114, No 04 (2018), Pagination: 760-770Abstract
This study discusses the observed long-term (1991–2015) and short-term (1991–2000 and 2001–2015) trends in winter temperature and precipitation over Northwestern Himalaya (NWH) along with its constituents, i.e. Lower Himalaya (LH), Greater Himalaya (GH) and Karakoram Himalaya (KH). An overall warming signature was observed over NWH since maximum, minimum and mean temperatures followed rising trends with a total increase of 0.9°C, 0.19°C and 0.65°C respectively, in 25 years, the increase being statistically significant for maximum and mean temperatures. However, warming was not consistent over all zones of NWH with minimum temperature at LH showing anomalous cooling by 0.83°C (statistically significant at α = 0.05) during 25 years. The rise in mean temperature was observed highest at GH, i.e. 0.87°C (1991–2015) followed by KH, i.e. 0.56°C, which is in agreement with observations of comparatively higher rate of glacier retreat over GH than KH as reported in several studies. Total precipitation (rainfall + snowfall) was found to increase whereas snowfall was found to decrease with concurrent significant increase in rainfall at all zones of NWH. The spatiotemporal winter climatic variations over NWH support the impact on recently reported findings on the Himalayan snow cover and glacier variations at different durations.Keywords
Climate Change, Cryosphere, Rainfall, Winter Warming and Precipitation.Full Text
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- Restoration of Old Genus Name Penaeus Based on Molecular Phylogenetic Affiliations Using Complete Mitochondrial Genome
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PDF Views:72
Authors
Affiliations
1 ICAR-Central Institute of Brackishwater Aquaculture, Chennai 680 028, IN
1 ICAR-Central Institute of Brackishwater Aquaculture, Chennai 680 028, IN
Source
Current Science, Vol 121, No 3 (2021), Pagination: 423-428Abstract
Genus Penaeus sensu lato has been focus of intense scientific research for several decades owing to the high market demand of this group. Twenty eight species of shrimps, were grouped in this genus until Perez Farfante and Kensely raising the former six subgenera in this genus to generic status. Being a most valuable group, this decision made considerable concern among the end users. Recently research group from ICAR-Central Institute of Brackishwater Aquaculture made a comprehensive phylogenetic analysis and confirmed the monophyletic origin of genus Penaeus. In the present article we provide a summary of the revisionary work, and currently accepted binomial to encourage practitioners to use the modern up-to-date classification.Keywords
Genus Penaeus, Molecular Phylogenetic Affiliations, Mitochondrial Genome, Scientific Name.Full Text
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