Browsing by Author "Lallu, K.R."
Now showing items 1-13 of 13
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Bacterial domination over Archaea in ammonia oxidation in a monsoon-driven tropical estuary
Vipindas, P.V.; Anas, A.; Jasmin, C.; Lallu, K.R.; Fausia, K.H.; Balachandran, K.K.; Muraleedharan, K.R.; Nair, S. (Springer, 2015)Autotrophic ammonia oxidizing microorganisms,which are responsible for the rate-limiting step of nitrification in most aquatic systems, have not been studied in tropical estuaries. Cochin estuary (CE) is one of the largest, ... -
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. ... -
Copepod carcasses in a tropical estuary during different hydrographical settings
Jyothibabu, R.; Jagadeesan, L.; Lallu, K.R. (Springer, 2016)Dead copepods (carcasses) are widespread in aquatic systems, but their scientific quantification is rare due to the difficulty in discriminating them from live ones. In this paper, we hypothesized that due to large spatial ... -
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 ... -
Effects of hydrography on the distribution of bacteria and virus in Cochin Estuary, India
Parvathi, A.; Jasna, V.; Jina, S.; Jayalakshmy, K.V.; Lallu, K.R.; Madhu, N.V.; Muraleedharan, K.R.; NaveenKumar, K.R.; Balachandran, K.K. (Ecological Society of Japan, 2015)The viral dynamics have rarely been investigated in estuarine environments of India. The present study brings out a first hand information on the distribution of virus and bacteria in an eutrophic estuary (Cochin, India). ... -
Impact of seasonal changes in nutrient loading on distribution and activity of nitrifiers in a tropical estuary
Vipindas, P.V.; Anas, A.; Jayalakshmy, K.V.; Lallu, K.R.; Benny, P.Y.; Nair, S. (Elsevier, 2018)Estuaries are ecologically important environments, which function as the reception point of nitrogenous inputs of terrestrial and anthropogenic origin. In the present study, we discuss the influence of nutrient characteristics ... -
Input-export fluxes of heavy metals in the Cochin estuary, southwest coast of India
Lallu, K.R.; Sebin, J.; Muraleedharan, K.R.; Gireeshkumar, T.R.; Udayakrishnan, P.B.; Dayana, M.; Sachin, M.; Revichandran, C.; Nair, M.; Parameswaran, P.S.; Balachandran, K.K. (Springer, 2023)Cochin estuary (CE) is one of the largest tropical estuaries along the southwest coast of India, sustaining rich bio-resources.Several studies enlighten the environmental changes in the CE caused by anthropogenic activities.In ... -
Macrobenthic fauna with special reference to the ecology and population structure of a tubicolous amphipod, Chelicorophium madrasensis (Nayar, 1950) in a tropical estuary, southwest coast of India
Rehitha, T.V.; Madhu, N.V.; Vineetha, G.; Vipindas, P.V.; Lallu, K.R. (2019)The ecology and population structure of the corophid amphipod Chelicorophium madrasensis (Nayar, 1950) was studied for 1�year in the Cochin estuary (CE), a tropical monsoonal estuary along the southwest coast of India. The ... -
Plankton food web and its seasonal dynamics in a large monsoonal estuary (Cochin backwaters, India)-significance of mesohaline region
Sooria, P.M.; Jyothibabu, R.; Anjusha, A.; Vineetha, G.; Vinita, J.; Lallu, K.R.; Paul, M.; Jagadeesan, L. (Springer, 2015)The paper presents the ecology and dynamics of plankton food web in the Cochin backwaters (CBW), the largest monsoonal estuary along the west coast of India. The data source is a time series measurement carried out in the ... -
Residual fluxes of water and nutrient transport through the main inlet of a tropical estuary, Cochin estuary, West Coast, India
Vinita, J.; Lallu, K.R.; Revichandran, C.; Muraleedharan, K.R.; Jineesh, V.K.; Shivaprasad, A. (Springer, 2015)25-hour time series measurements of vertical salinity profiles and currents in Zuari estuary were done during both spring and neap tidal cycles of pre-monsoon (April–May), south-west monsoon (June–September) and post-monsoon ... -
Response of phytoplankton to heavy cloud cover and turbidity in the northern Bay of Bengal
Jyothibabu, R.; Arunpandi, N.; Jagadeesan, L.; Karnan, C.; Lallu, K.R.; Vinayachandran, P.N. (Nature Publishing Group, 2018)An interesting physiological response of phytoplankton to large fluctuations in underwater photosynthetically active radiation (PAR) levels in the northern Bay of Bengal has been presented here. This study is primarily ... -
Summer monsoon onset-induced changes of autotrophic pico- and nanoplankton in the largest monsoonal estuary along the west coast of India
Mohan, A.P.; Jyothibabu, R.; Jagadeesan, L.; Lallu, K.R.; Karnan, C. (Springer, 2016)This study presents the response of autotrophic pico- and nanoplankton to southwest monsoon-associated hydrographical transformations in the Cochin backwaters (CBW), the largest monsoonal estuary along the west coast of ... -
Transport of dissolved nutrients and chlorophyll a in a tropical estuary, southwest coast of India.
Lallu, K.R.; Fausia, K.H.; Vinita, J.; Balachandran, K.K.; NaveenKumar, K.R.; Rehitha, T.V. (Springer, 2014)Intra-tidal variability in the transport of materials through the Cochin estuary was studied over successive spring and neap tides to estimate the export fluxes of nutrients and chlorophyll a into the adjoining coastal ...