Distribution of dissolved inorganic carbon and net ecosystem production in a tropical brackish water lagoon, India

Muduli, Pradipta R.; Kanuri, Vishnu Vardhan; Robin, R.S.; Kumar, B. Charan; Patra, Sivaji; Raman, A. V.; Rao, G. Nageswara; Subramanian, B. R.

doi:10.1016/j.csr.2013.05.014

Cited by 56 publications

(17 citation statements)

References 76 publications

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“…The fact that SiO 4 2− mirrored the monsoonal precipitation shows that the majority of the SiO 4 2− influx comes from terrestrial sources. Recent studies of the Chilika lagoon showed seasonal fluctuations in water quality; biotic communities also exhibited patterns similar to those reflected by the present study (Muduli et al 2013, Srichandan et al 2015a.…”

Section: Discussionsupporting

confidence: 70%

“…On 1 October 1981, the lagoon was declared as a Ramsar site (wetland of international importance). Nutrient dynamics observed in this shallow (< 2 m) water body are influenced by monsoonal precipitation (Nayak & Behera 2004, Panigrahi et al 2009), along with physiological factors and carbon dynamics (Muduli et al 2012(Muduli et al , 2013. Previous studies of the lagoon have identified seasonal variations within the phytoplankton (Panigrahi et al 2009, Srichandan et al 2015a) and zooplankton (Naik et al 2008) communities of the water column; however, studies investigating seasonal patterning within the benthic bottom-dwelling communities are not available.…”

Section: Introductionmentioning

confidence: 99%

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Exploring the seasonal dynamics within the benthic foraminiferal biocoenosis in a tropical monsoon-influenced coastal lagoon

Sen¹,

Bhadury²

2016

Aquat. Biol.

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Benthic foraminiferal assemblages are widely used as bioproxies for coastal environment monitoring. The present study investigated seasonal variations in live benthic foraminiferal assemblages over a period of 12 mo from the largest coastal lagoon in Asia, which is strongly influenced by tropical monsoons. The investigation revealed an extremely low diversity of benthic foraminiferal assemblages, comprising 12 species, of which 8 were agglutinated. The most dominant taxa throughout the study period belonged to the genus Ammonia. The living assemblage was restricted to the topmost 4 cm of the sediment, with the majority of assemblages occurring in the top 2 cm. Data analysis revealed the presence of a significant variation in the biotic assemblage, indicating a patchy distribution. Overall, some of the benthic foraminiferal species, such as Ammomarginulina sp. and Miliammina obliqua, showed strong seasonal variation, while the dominant Ammonia spp. did not show any temporal variation. The environmental parameters displayed significant correlations with certain species, although no single factor could be identified as being the major force driving assemblage composition. The present findings of seasonality and correlations observed between certain factors with certain species may be utilized to improve biomonitoring in similar settings on a global scale. KEY WORDS:Benthic foraminifera · Coastal lagoon · Live assemblage · ANOSIM · UPGMA-based cluster · Ammonia OPEN PEN ACCESS CCESS

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Section: Discussionsupporting

confidence: 70%

Section: Introductionmentioning

confidence: 99%

Exploring the seasonal dynamics within the benthic foraminiferal biocoenosis in a tropical monsoon-influenced coastal lagoon

Sen¹,

Bhadury²

2016

Aquat. Biol.

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“…The southern (SS) and central (CS) are brackish water in nature, while the northern sector (NS) is fresh water and the outer channel (OC) is considered as marine, due to its active connections with the Bay of Bengal. [20,21] The lagoon provides a sizable production of capture fishery which is estimated about 10,000 mt per annum. [22] Thus, the major fraction of the local population is directly dependent upon the fisheries sector for which large numbers of boats are operated inside the lagoon.…”

Section: Study Areamentioning

confidence: 99%

Assessment of petroleum hydrocarbon in a tropical brackish water lagoon: Chilika, India

Mohanty

Muduli

Behera

et al. 2016

Chemistry and Ecology

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Assessment of petroleum hydrocarbon (PHC) in the Chilika Lagoon, India, revealed a significant spatio-temporal variation in surface water (analysis of variance: n = 120, p < .01), whereas insignificant variation in sediment samples. The lagoon exhibited the highest PHC concentration during summer, attributed to higher boat activity and mixing of PHC from bottom sediment. For PHC in both the water of the lagoon and regions adjacent to jetties, the northern sector exhibited highest concentrations, followed by the southern, outer channels and central sectors, in order. The highest PHC level was due to the highest density of fishing boat operations and maintenance activities, as well as the resuspension of lake sediments across the shallowest region of the lagoon. The PHC found in the water and sediment in the jetty regions were relatively high in comparison to the rest of the lagoon, again attributed to the maintenance and operational activities of the motorised boats in the jetties. The sediment PHC concentration was ∼1000 times higher than the respective value for water, which could result from long-term deposition. The overall PHC concentration in the lagoon and jetties was found to be under the threshold limit and hence there is no risk to the existing biodiversity of the Chilika Lagoon. ARTICLE HISTORY

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“…A total of 52 rivers and rivulets drain into the lagoon, out of which the northeast rivers contribute about 80% of the annual freshwater load. The mixing of freshwater from rivers and saline waters through the lagoon's mouth significantly influences the biogeochemistry and biodiversity of the lagoon (Muduli et al 2012(Muduli et al , 2013Barik et al 2017). Due to this complex salinity regime, the lagoon hosts a dynamic ecosystem that offers a vast array of biological diversity.…”

mentioning

confidence: 99%

Sources and Variability of Petroleum Hydrocarbon Residues in Sediments of Chilika Lagoon, East Coast of India

Mohanty

Muduli

Cooper

et al. 2017

Bull Environ Contam Toxicol

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Distribution of dissolved inorganic carbon and net ecosystem production in a tropical brackish water lagoon, India

Cited by 56 publications

References 76 publications

Exploring the seasonal dynamics within the benthic foraminiferal biocoenosis in a tropical monsoon-influenced coastal lagoon

Exploring the seasonal dynamics within the benthic foraminiferal biocoenosis in a tropical monsoon-influenced coastal lagoon

Assessment of petroleum hydrocarbon in a tropical brackish water lagoon: Chilika, India

Sources and Variability of Petroleum Hydrocarbon Residues in Sediments of Chilika Lagoon, East Coast of India

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