scholarly journals Carbon Sequestration by the Standing Mangrove Trees at the Achara Estuary along the Coast of Maharashtra State (India)

2021 ◽  
Vol 4 (3) ◽  
pp. 143-147
Author(s):  
Narendra A Kulkarni

Mangroves or all the plants are known to absorb the atmospheric carbon by photosynthesis. This absorbed carbon is stored in various organic forms and helps to produce the biomass. Trees dominate this process. Greater and taller is the size of the tree more is the amount of carbon fixed. Hence trees are the major plant forms to absorb maximum atmospheric carbon and biomass production. Thus, the present investigation was carried out to calculate the carbon sequestration of 12 standing mangrove tree species in Achara estuary of Sindhudurg district of Maharashtra state. The biomass and total organic carbon of standing trees is estimated by the non-destructive method. The population of Avicennia marina var. acutissima Staf. & Mold. and Rhizophora mucronata Lamk. are more in the estuary and they sequestrate about 585.70×106 and 375.10×106 lbs carbon respectively. A total of 1892.96×106 lbs of the carbon is sequestering by all the mangrove trees present in the estuary.

2018 ◽  
Vol 1 (04) ◽  
pp. 60-63
Author(s):  
Narendra Anant Kulkarni

Plants are known to absorb the atmospheric carbon by photosynthesis. This absorbed carbon is stored in various organic forms and helps to produce the biomass. The absorption of the atmospheric carbon is depend on the structure and life form of the plants. Trees dominate this process. Greater and taller is the size of the tree more is the amount of carbon fixed. Hence trees are the major plant forms to absorb maximum atmospheric carbon and biomass production. Thus, the present investigation was carried out to calculate the carbon sequestration of 22 standing tree species in Amrai Park of Sangli city. The biomass and total organic carbon of standing trees is estimated by the non destructive method. The population of Swieteniamahagoni(C) Jacq.is more in the campus and it sequestrates the 77509.25 lbs carbon/year.


2018 ◽  
Vol 7 (4) ◽  
pp. 733-739 ◽  
Author(s):  
Kandasamy Kathiresan ◽  
Kandasamy Saravanakumar ◽  
Nabikhan Asmathunisha ◽  
Raj Anburaj ◽  
Venugopal Gomathi

2018 ◽  
Vol 69 (5) ◽  
pp. 741
Author(s):  
Chuan-Wen Ho ◽  
Jih-Sheng Huang ◽  
Hsing-Juh Lin

Mangrove overgrowth could decrease biodiversity and increase flooding risk. Thinning has been proposed as a managerial action, which would decrease the capacity of mangroves for carbon sequestration. The aim of the present study was to examine the relationship between differences in mangrove tree density and carbon sequestration capacity. Three sampling sites were established in the Fangyuan mangroves of Taiwan, including seaward and landward sites with Avicennia marina and a site with Kandelia obovata, with control (C; no thinning), medium thinning (MT; 50% thinning) and high thinning (HT; only one tree left at the centre) treatments. The HT treatment significantly reduced the areal carbon sequestration rates (66–84%), but the reductions in the MT treatment were much lower (3–30%). Considering the carbon sequestration per tree, the HT treatment resulted in the significantly highest rates (two- to fivefold higher) than those under the MT and C treatments. Medium thinning appears to be the optimal strategy to meet the demand of reducing the loss of carbon sequestration capacity for mangrove management. Together, the data from in the present study and the relevant literature suggest a maximum level of carbon sequestration by managing the density to 30600treesha–1 for K. obovata and 10500treesha–1 for A. marina.


2020 ◽  
Author(s):  
Dirk Hays ◽  
Matt Wolfe ◽  
Iliyana Dobreva ◽  
Henry Ruiz

<p>Currently atmospheric carbon has reached 405 ppm or 720 GtC.  As is widely known, this increasing atmospheric carbon dioxide, methane and nitrous oxide are primary contributing factors in increasing global temperatures.  Current measurements show that sources of emission such as the burning of fossil fuels contributes 9.9 GtC/yr, while land use change contributes 1.5 GtC/yr. We have identified that crops possessing a subsurface rhizome in particular, in addition to high root biomass, are essential and capable of increasing crop derived soil carbon sequestration by 10-fold.  If the presence of a high biomass rhizome were bred into the world’s major grain crops wheat, rice, maize, barley, sorghum and millets and grown worldwide in no-tillage conditions, these crops could sequester and offset current carbon emissions by 9Gt carbon on a yearly basis. We have developed a new ground penetrating radar instrument and analytical software, which will be presented, as a needed for high throughput non-destructive phenotyping, selection and speed breeding new high root biomass cultivars of the worlds major cultivated crops and forages as a key component for crop-based carbon sequestration driven climate change mitigation. </p>


2021 ◽  
Vol 891 (1) ◽  
pp. 012005
Author(s):  
A Nuryawan ◽  
R S Syahputra ◽  
I Azhar ◽  
I Risnasari

Abstract In order to sustain mangrove forests, only branches part of the mangrove trees have been utilized. In this context, these parts have been used as the raw material of wood pellets and briquettes. These solid biofuels are produced by compressing pulverized woody biomass with or without additives in cubic-form or cylindrical units. In this study, five predominant mangrove trees, namely Avicennia marina, Bruguiera sexangula, Excoecaria agallocha, Rhizopora apiculata, and R. mucronata, have been harvested their branches. Wood with and without bark derived from branches has been investigated for their fundamental properties, namely percentage of bark, ash-content, and physical properties (moisture content, density, and specific gravity). These properties will determine the quality class of the resulted wood pellets and briquettes considering pre-treatment or the nature of the branches’ wood.


Mangrove trees grow only on sheltered coasts, hence on Aldabra they occur along the shores of the lagoon. In these mangrove communities four species are common and were found in each locality visited. These are Avicennia marina (Forsk.) Vierh., Bruguiera gymnorhiza (L.) Lam., Ceriops tagal (Perr.) C.B. Rob., and Rhizophora mucronata Lam. In a few localities only, these are accompanied by one or other of Lumnitzera racemosa Willd., Sonneratia albaj. Sm., or Xylocarpus granatum Koen. The fern Acrostichum aureum L. is abundant on Aldabra, sometimes in association with mangroves but more commonly among the maritime scrub where it tends to occur in crevices and solution holes at a slightly lower level than the trees and shrubs of the scrub. Mangroves occur almost all round the lagoon shores, more commonly in some places than in others, more luxuriantly in some places than in others. Along only a few rocky stretches of the lagoon shores are they absent. Nowhere on the island is there a complete pattern of the zonation described for other Indian Ocean shores by Macnae (1968). On Aldabra the landward fringe is well developed only in one locality and the seaward fringes have rarely developed.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Sajjad Asaf ◽  
Abdul Latif Khan ◽  
Muhammad Numan ◽  
Ahmed Al-Harrasi

AbstractAvicennia marina (family Acanthaceae) is a halotolerant woody shrub that grows wildly and cultivated in the coastal regions. Despite its importance, the species suffers from lack of genomic datasets to improve its taxonomy and phylogenetic placement across the related species. Here, we have aimed to sequence the plastid genome of A. marina and its comparison with related species in family Acanthaceae. Detailed next-generation sequencing and analysis showed a complete chloroplast genome of 150,279 bp, comprising 38.6% GC. Genome architecture is quadripartite revealing large single copy (82,522 bp), small single copy (17,523 bp), and pair of inverted repeats (25,117 bp). Furthermore, the genome contains 132 different genes, including 87 protein-coding genes, 8 rRNA, 37 tRNA genes, and 126 simple sequence repeats (122 mononucleotide, 2 dinucleotides, and 2 trinucleotides). Interestingly, about 25 forward, 15 reversed and 14 palindromic repeats were also found in the A. marina. High degree synteny was observed in the pairwise alignment with related genomes. The chloroplast genome comparative assessment showed a high degree of sequence similarity in coding regions and varying divergence in the intergenic spacers among ten Acanthaceae species. The pairwise distance showed that A. marina exhibited the highest divergence (0.084) with Justicia flava and showed lowest divergence with Aphelandra knappiae (0.059). Current genomic datasets are a valuable resource for investigating the population and evolutionary genetics of family Acanthaceae members’ specifically A. marina and related species.


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