Biogeochemical cycle of nitrogen in a tropical mangrove ecosystem, east coast of India

Ray, Raghab; Majumder, Natasha; Das, Sanjukta; Chowdhury, Chumki; Jana, T. K.

doi:10.1016/j.marchem.2014.04.007

Cited by 73 publications

(34 citation statements)

References 66 publications

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“…Phosphate levels within the four-mangroves zone B (Fig.2) in our results were higher than Chidiyatappu (1.6-fold) 42 , Sippighat (3.1-fold) 49 and Aerial Bay (4.1-fold) 46 and were similar to Sundarbans mangroves sediment 61 . Higher phosphate levels within mangrove sediment are due to the land run-off from the nearby agricultural fields, as these mangrove areas are considered pristine in terms of anthropogenic pollution source 49 .…”

Section: Discussion;supporting

confidence: 72%

“…Higher ammonium levels observed in the surface sediment compared to nitrite and nitrate indicates higher denitrification and anammox activity in the surface sediment of these mangrove ecosystems 61 . The conservation of available nitrate levels within mangrove areas due to limited riverine inputs during pre-monsoon and conversion of these nitrate into ammonium through dissimilatory nitrate reduction also adds ammonium into the surface sediment 62,63 .…”

Section: Discussion;mentioning

confidence: 90%

“…Marine Jetty nitrate levels were 2.1-fold lower than Phoenix Jetty 49 as Phoenix Jetty receives heavy nutrient loading from anthropogenic sources of waste water discharge 61,49 .…”

Section: Discussion;mentioning

confidence: 92%

“…The range of sulfate levels in the four-mangrove zone A were similar and zone B were 1.3-1.8-fold higher than sulfate levels of Portblair Bay 57 of AI. For Marine Jetty the range of sulfate (Fig.2) indicates about the differential production of sulfate and the exposure of these zones to wave actions, where zone A receives higher waves, tidal influx, lower resident time and drainage of tidal water compared to zone B within mangroves 61 .…”

Section: Discussion;mentioning

confidence: 99%

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Andaman mangrove sediments: source of nutrients and sink of heavy metals

Mishra

Manish

2018

Preprint

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Andaman Islands (AI) of India is a biodiversity hotspot of mangroves but biogeochemical dynamics of AI is less understood. We collected sediment samples of four AI mangrove sites and one site without mangroves for nutrients and trace metal analysis. Samples were collected from each site at the inlet of seawater (Zone A) and the other 500m into the mangrove creek (Zone B). Nutrients (sulphate, ammonium, nitrite and nitrate) levels, organic matter (OM) and carbon content were higher at Zone B of mangrove ecosystem due to the higher OM content from mangrove leaf litter decomposition and microbial degradation. Metal (Pb &Cd) content of zones with and without mangroves were similar and Igeo values indicated moderate contamination of mangrove zones of AI due to lack of anthropogenic pollution. Our results suggest mangrove ecosystems of AI are uncontaminated from heavy metals and are source of nutrients to the oligotrophic coastal ecosystems of Andaman Sea.

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Section: Discussion;supporting

confidence: 72%

Section: Discussion;mentioning

confidence: 90%

“…Marine Jetty nitrate levels were 2.1-fold lower than Phoenix Jetty 49 as Phoenix Jetty receives heavy nutrient loading from anthropogenic sources of waste water discharge 61,49 .…”

Section: Discussion;mentioning

confidence: 92%

Section: Discussion;mentioning

confidence: 99%

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Andaman mangrove sediments: source of nutrients and sink of heavy metals

Mishra

Manish

2018

Preprint

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“…Pola sebaran vegetasi melalui potensi kerapatan menunjukan potensi penguasaan sumber hara oleh jensi vegetasi mangrove. Vegetasi mangrove yang memiliki kerapatan tertinggi berarti memiliki tingkat penguasaan hara yang terbesar (Ray et al, 2014dan Tama et al, 2009.…”

Section: Sebaran Vegetasi Mangrove DI Segara Anakan Cilacapunclassified

Struktur Komunitas, Zonasi Dan Keanekaragaman Hayati Vegetasi Mangrove Di Segara Anakan Cilacap

2015

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Mangrove ecosystem of Segara Anakan Cilacap has specific vegetation, function, and benefit. It was dominated by Rhizophora, Bruguiera, Avicennia and associate vegetation such as Nypa frutican. Stability of mangrove ecosystem can be seen by community structure, zonation and diversity of mangrove vegetation. This research aimed to analyze community structure, zonnation and diversity of mangrove vegetation in Segara Anakan Lagoon. This research used survey method with cluster sampling by stratified analysis. The Analyze of data used association analysis, zonation analysis, richnes index, and Shanon Wiener index. This Research showed that (1) Association index of seedling was dominated by index < 0.22 (lowest association) with scored 46,67 % -66.66 %, (2) Association index of sapling also was dominated by index < 0.22 (lowest association) with scored 58,33% -71.43 %, (3) Association index of tress also was dominated by index < 0.22 (lowest association) with scored 67,27 % % (4) Overlaping indeks showed Aegiceras corniculatum has high overlap toward Nypa frutican (71 %) (seedling stage) and Rhizophora apiculata to Avicennia spp (0,49) (sapling stage). (5) Zonation of mangrove showed that Zone 1 as direct connecting zone with sea which were dominated by Avicennia marina and Avicennia oficinallis. Zone 2 as the middle zone which were dominated by Rhizophora mucronata, Rhizophora apiculata, and Ceriops tagal. Zone 3 as direct connecting zone with island which were dominated by Nypa fruticans, Acanthus ilicifolius, and Sonneratia casseolaris (6) diversity index between 0.48 -1.83 (low -middle).

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