Energy dynamics and its implication to biosphere–atmosphere exchange of CO2, H2O and CH4 in a tropical mangrove forest canopy

Ganguly, Dipnarayan; Dey, Munmun; Mandal, S. K.; De, Tarun Kumar; Jana, T. K.

doi:10.1016/j.atmosenv.2008.01.022

Cited by 46 publications

(25 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The high human population density and rapid economic growth of the countries surrounding the Bay of Bengal make the coastal environment vulnerable to a range of anthropogenic stress factors (Millennium Ecosystem Assessment 2005;Ganguly et al 2008). In particular, the northeastern region of the Bay of Bengal, the estuarine system, is a region of positive water balance and large inputs from major rivers.…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis of Phytoplankton Composition and Abundance over a Two-Decade Period at the Land–Ocean Boundary of a Tropical Mangrove Ecosystem

Biswas

Dey

Ganguly

et al. 2009

Estuaries and Coasts

View full text Add to dashboard Cite

Inter-annual variations of phytoplankton abundance and community organization were observed over a two-decade period along with the ancillary parameters at the land-ocean boundary associated with the Sundarban mangrove forest (21°32′ and 22°40′ N and 88°05′ and 89°E), along the NE Coast of the Bay of Bengal. The number of definable Bacillariophyceae species exceeded Dinophyceae taxa, and the total number of bloom-forming species declined from a maximum of ten in 2000 and a minimum of two in 2007. Blooms of the diatom Coscinodiscus radiatus were common in 2000 and 2007. Tide cycles and the onset of the monsoon season played important roles in diurnal and seasonal variability of phytoplankton. Phytoplankton biovolume showed seasonality, with the highest levels during post-monsoon periods and lowest levels during the monsoon period. Phytoplankton abundance was correlated to rainfall patterns, which may be altered by long-term changes in climate.

show abstract

Section: Introductionmentioning

confidence: 99%

Comparative Analysis of Phytoplankton Composition and Abundance over a Two-Decade Period at the Land–Ocean Boundary of a Tropical Mangrove Ecosystem

Biswas

Dey

Ganguly

et al. 2009

Estuaries and Coasts

View full text Add to dashboard Cite

show abstract

“…The Sundarbans mangrove ecosystem is spread across several islands with 34% in Indian territory and 66% in Bangladesh. The total area of the Indian Sundarban region is about 9630 km 2 , out of which reserve forest area occupies 4264 km 2 while the rest of the area is covered by water bodies [20]. The average altitude of the Sundarbans mangroves is 7 m and it has a wide biodiversity of tree and shrub species.…”

Section: Study Areamentioning

confidence: 99%

“…Mukhopadhyay et al had observed the environment of Jambu Island (southwest corner of Indian Sundarbans) to be a sink for CO 2 in the pre-monsoon season at a rate of´56.5 g CO 2 m´2¨day´1 [19]. Ganguly et al have reported a mean net flux of´48.3 g CO 2 m´2¨day´1 at the same Lothian Island and Sajnekhali, and have also estimated a total sink strength of 205 Gg¨day´1 for entire reserve forest areas (4264 km 2 ) [20]. During 2011-2012, a series of experiments using micrometeorological measurements were carried out by Chanda et al in Sundarbans mangroves at different stations viz.…”

Section: Introductionmentioning

confidence: 99%

Seasonal Variations of Carbon Dioxide, Water Vapor and Energy Fluxes in Tropical Indian Mangroves

Rodda

Thumaty

Jha

et al. 2016

Forests

View full text Add to dashboard Cite

show abstract

“…Meteorological parameters like air temperature and wind velocity were simultaneously recorded at 10 and 20 m heights above the forest floor of the island using a portable weather station (Model: Davis 7440). Mangrove biosphere-atmosphere CH 4 exchange fluxes (F BA ) were calculated using the following micrometeorological relationship (Barrett, 1998;Ganguly et al, 2008):…”

Section: Analysis Of Estuarine Water Samples and Water-atmosphere Ch mentioning

confidence: 99%

Mangrove Methane Biogeochemistry in the Indian Sundarbans: A Proposed Budget

2017

View full text Add to dashboard Cite

Biogeochemical cycling of CH 4 was investigated at Lothian Island, one of the relatively pristine islands of Indian Sundarbans and its adjacent Saptamukhi estuary, during June 2010 to December 2012. Intertidal mangrove sediments were highly anoxic and rich in organic carbon. Mean rates of methanogenesis were 3,547 and 48.88 µmol m −3 wet sediment d −1 , for intertidal (up to 25 cm depth) and sub-tidal sediments (first 5 cm depth), respectively. CH 4 in pore-water was 53.4 times more supersaturated than in adjacent estuarine waters. This resulted in significant CH 4 efflux from sediments to estuarine waters-via advective and diffusive transport. About 8.2% of the total CH 4 produced in intertidal mangrove sediments was transported to the adjacent estuary through advective flux, which was 20 times higher than diffusive CH 4 flux. Mean CH 4 concentrations in estuarine surface and sub-surface waters were 69.9 and 56.1 nM, respectively, with a dissolved CH 4 oxidation rate in estuarine surface waters of 20.5 nmol L −1 d −1 . An estimated 0.09 Gg year −1 of CH 4 is released from estuaries of Sundarbans to the regional atmosphere. The mean CH 4 mixing ratio over the forest atmosphere was 2 ppmv. On annual basis, only 2.75% of total supplied CH 4 to the forest atmosphere was transported to the upper atmosphere via biosphere-atmosphere exchange. Mean CH 4 photo-oxidation rate over the forest atmosphere was 3.25 × 10 −9 mg cm −3 d −1 . Using new and previously published data we present for the first time, a CH 4 budget for Sundarbans mangrove ecosystem which in part, revealed the existence of anaerobic CH 4 oxidation in the mangrove sediment column.

show abstract

Energy dynamics and its implication to biosphere–atmosphere exchange of CO2, H2O and CH4 in a tropical mangrove forest canopy

Cited by 46 publications

References 22 publications

Comparative Analysis of Phytoplankton Composition and Abundance over a Two-Decade Period at the Land–Ocean Boundary of a Tropical Mangrove Ecosystem

Comparative Analysis of Phytoplankton Composition and Abundance over a Two-Decade Period at the Land–Ocean Boundary of a Tropical Mangrove Ecosystem

Seasonal Variations of Carbon Dioxide, Water Vapor and Energy Fluxes in Tropical Indian Mangroves

Mangrove Methane Biogeochemistry in the Indian Sundarbans: A Proposed Budget

Contact Info

Product

Resources

About