Browsing by Author "Ullas, N."
Now showing items 1-10 of 10
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Characterization of phytoplankton pigments and functional community structure in the Gulf of Mannar and the Palk Bay using HPLC–CHEMTAX analysis.
Madhu, N.V.; Ullas, N.; Ashwini, R.; Meenu, P.; Rehitha, T.V.; Lallu, K.R. (Elsevier, 2014)Phytoplankton marker pigments and their functional groups were identified for the first time in the Gulf of Mannar (GoM) and the Palk Bay (PB), located in the southeast coast of India using HPLC–CHEMTAX analytical techniques. ... -
Characterization of phytoplankton size-structure based productivity, pigment complexes (HPLC/CHEMTAX) and species composition in the Cochin estuary (southwest coast of India): special emphasis on diatoms
Meenu, P.; Madhu, N.V.; Ullas, N.; Vineetha, G.; Rehitha, T.V.; Ashwini, R.; Nair, M.; Anil, P. (Elsevier, 2021)Seasonal studies on size-fractionated phytoplankton productivity (biomass and primary production), marker pigments, and species composition and abundance were carried out in the Cochin estuary (CE), located on the southwest ... -
Differential environmental responses of tropical phytoplankton community in the southwest coast of India
Madhu, N.V.; Martin, G.D.; Haridevi, C.K.; Nair, M.; Balachandran, K.K.; Ullas, N. (Elsevier, 2017)Phytoplankton characteristics (biomass, primary productivity, species composition and community structure) were studied in a tropical estuary (Cochin estuary) and adjacent coastal marine region for understanding the factors ... -
Ecology and trophic preference of picoplankton and nanoplankton in the Gulf of Mannar and the Palk Bay, southeast coast of India
Jyothibabu, R.; Mohan, A.P.; Jagadeesan, L.; Anjusha, A.; Muraleedharan, K.R.; Lallu, K.R.; Kiran, K.; Ullas, N. (Elsevier, 2013)The Gulf of Mannar (GoM) and the Palk Bay (PB) are two least studied marine environments located between India and Sri Lanka. The environmental and smaller plankton (0.2–20 mu m) data from 30 locations in the GoM and PB ... -
Impact of maintenance dredging on macrobenthic community structure of a tropical estuary
Rehitha, T.V.; Ullas, N.; Vineetha, G.; Benny, P.Y.; Madhu, N.V.; Revichandran, C. (Elsevier, 2017)This paper demonstrates the impact of maintenance dredging activities on the macrobenthic community structure of a tropical monsoonal estuary (Cochin estuary), located in the southwest coast of India for three consecutive ... -
Influence of oil and gas exploration activities on the macrobenthic community structure of the Krishna-Godavari basin (Ravva coast), Western Bay of Bengal
Rehitha, T.V.; Madhu, N.V.; Vipindas, P.V.; Vineetha, G.; Ullas, N.; Muraleedharan, K.R.; Nair, M. (Pergamon, 2021)The influence of oil and gas exploration activities on the macrobenthic community of an offshore oil and gas drilling site was investigated along the Krishna-Godavari basin (KG), Western Bay of Bengal. In the oil well ... -
Occurrence of cyanobacteria (Richelia intracellularis)-diatom (Rhizosolenia hebetata) consortium in the Palk Bay, southeast coast of India
Madhu, N.V.; Paul, M.; Ullas, N.; Ashwini, R.; Rehitha, T.V. (CSIR-NISCAIR, 2013)Symbiotic association of heterocystous cyanobacterium, Richelia intracellularis Schmidt with oceanic centric diatom, Rhizosolenia hebetata is reported from the Palk Bay, southeast coast of India. One to six trichomes of ... -
Occurrence of red tide caused by Karenia mikimotoi (toxic dinoflagellate) in the Southwest coast of India
Madhu, N.V.; Reny, P.D.; Paul, M.; Ullas, N.; Resmi, P. (NISCAIR (CSIR), 2011)Intense brownish discoloration was observed in the surface waters of Cochin barmouth on 21st October 2009, which found to extend a few kilometers in the coastal waters. Continuous monitoring was carried out in the region ... -
Trophic efficiency of plankton food webs: Observations from the Gulf of Mannar and the Palk Bay, Southeast Coast of India
Anjusha, A.; Jyothibabu, R.; Jagadeesan, L.; Mohan, A.P.; Sudheesh, K.; Kiran, K.; Ullas, N.; Deepak, M.P. (Elsevier, 2013)This paper introduces the structure and trophic efficiency of plankton food webs in the Gulf of Mannar (GoM) and the Palk Bay (PB) - two least studied marine environments located between India and Sri Lanka. The study is ... -
Why do satellite imageries show exceptionally high chlorophyll in the Gulf of mannar and the Palk bay during the norteast monsoon?.
Jyothibabu, R.; Madhu, N.V.; Jagadeesan, L.; Anjusha, A.; Mohan, A.P.; Ullas, N.; Sudheesh, K.; Karnan, C. (Springer, 2014)The Gulf of Mannar (GoM) and the Palk Bay (PB) are two least studied marine environments located between India and Sri Lanka. Exceptionally high chlorophyll a concentration in the GoM and the PB during the Northeast Monsoon ...