scholarly journals Allometric Modelling of the Stem Carbon Content of Rhizophora mucronata in a Tropical Mangrove Ecosystem

2020 ◽  
Vol 2020 ◽  
pp. 1-6
Author(s):  
W. M. Dimuthu Nilmini Wijeyaratne ◽  
Pawani Madhushani Liyanage
Keyword(s):  
Carbon Content ◽  
Mangrove Ecosystem ◽  
Allometric Equation ◽  
Nondestructive Method ◽  
Rhizophora Mucronata ◽  
Individual Tree ◽  
Backward Elimination ◽  
Model Efficiency ◽  
Level Of Significance ◽  
Best Fit

Mangrove ecosystems are identified as important blue carbon ecosystems because they play an important role in carbon sequestration among the coastal ecosystems. The present study was conducted to develop an allometric model to determine the stem carbon content of Rhizophora mucronata in a conserved tropical mangrove ecosystem. The stepwise regression with backward elimination was used to identify the best fit model to predict the stem carbon content of Rhizophora mucronata. The allometric equation, Ln C = −2.403 + 2.247 Ln DBH, where C: stem carbon content and DBH: diameter at breast height, was constructed to be evaluated and validated as the most suitable and practically applicable model. The reliability of the model was 76.7%, and the model was significant at 95% level of significance. The model bias values and the model efficiency values for the best fit model suggested that the model is suitable to be used practically. The present study used a nondestructive method of measuring individual tree parameters to develop this allometric equation to predict the stem carbon content and it is considered as an environmentally friendly approach with minimum damage to the tree.

scholarly journals Exploring the Effects of Thinning on Cunninghamia lanceolata Lamb. Carbon Allocation in Southwestern China Using a Process-Based Model

Forests ◽  
2021 ◽  
Vol 12 (11) ◽  
pp. 1590
Author(s):  
Hao Yang ◽  
Ziyan Liao ◽  
Angang Ming ◽  
Ning Miao
Keyword(s):  
Carbon Content ◽  
Soil Carbon ◽  
Carbon Allocation ◽  
Cunninghamia Lanceolata ◽  
Tree Age ◽  
Southwestern China ◽  
Dynamic Prediction ◽  
Individual Tree ◽  
Efficient Operation ◽  
Thinning Intensity

We investigated the effects of thinning intensity on the carbon allocation of Cunninghamia lanceolata Lamb. Hook by analyzing the stand growth and carbon content of a plantation under three thinning intensities (I: 70%; II: 50%; III: 30%) and with no thinning treatment. Using the carbon balance framework of the CROwn BASe (CROBAS) model and multi-source inventory data, we calibrated the parameters of the CROBAS-C. lanceolata (CROBAS-CL) model to simulate the carbon content in the plantation. We validated the CROBAS-CL model by comparing the predicted stand diameter at breast height (DBH) and stand height (H) with the measured values. Finally, the predicted stand carbon was compared with the soil carbon to assess the dynamics and allocation of ecosystem carbon content. Overall, our findings suggest that the predicted stand carbon of CROBAS-CL satisfies the statistical test requirements: the deviation of height and DBH predicted by the CROBAS-CL model from the measured height and DBH are less than 0.087 m and 0.165 cm, respectively. These results confirm that the model is useful for a dynamic prediction of stand carbon in C. lanceolata plantations. Based on the results of the proposed model, we determine that Thinning III (30% thinning intensity) is beneficial for the growth of C. lanceolata plantations and improving soil carbon sequestration. Additionally, the simulated carbon storage of an individual tree in the C. lanceolata plantation gradually increased with the tree age. Our study provides a strong reference for the efficient operation and management of C. lanceolata plantations in southwestern China.

scholarly journals Identification of Physical Characteristics and the Change of Mangrove Region in Coastal Southern Part of Padang City, West Sumatra - Indonesia

2019 ◽  
Vol 3 (1) ◽  
pp. 87-93
Author(s):  
Triyatno Yatno Yatno ◽  
Febriandi Febriandi ◽  
Aprizon Putra ◽  
Eni Kamal
Keyword(s):  
Physical Condition ◽  
Field Survey ◽  
Coastal Region ◽  
Mangrove Ecosystem ◽  
Rhizophora Mucronata ◽  
Mangrove Area ◽  
Rhizophora Apiculata ◽  
Sonneratia Alba ◽  
West Sumatra ◽  
Multi Temporal

The research about the identification of mangrove physical condition and the change of mangrove area has aims are knowing of mangrove physical condition and the change of mangrove area in the coastal region southern part of Padang city. The method used in this research is the field survey and multi-temporal satellite imagery analysis in 2001 and 2018 year. Based on the field survey at the date of August 18, 2017 generally the mangrove that found in research location i.e Rhizophora Apiculata, Rhizophora mucronata, Sonneratia alba, and Nypa. The spatial distribution of the mangrove ecosystem is dependent on the ecological conditions of the area as reflected by the types of mangrove vegetation that grows and develops in the research location. A decrease in mangrove area that occurred between of 2001 to the 2017 years i.e in the coastal region of Bungus bay i.e 5.54 ha, where the decrease in mangrove area occurred because some mangrove plants were cut down and made the settlement land, while in the region of Sungai Pisang bay happen to increase in mangrove area i.e 36.12 ha, where the increase in mangrove area occurred because of the region obstructed by big waves of the sea (protected small the islands).

Observations on the Ecology of Weaver Ants (Oecophylla smaragdina Fabricius) in a Thai Mangrove Ecosystem and Their Effect on Herbivory of Rhizophora mucronata Lam.

Biotropica ◽  
2004 ◽  
Vol 36 (3) ◽  
pp. 344-351 ◽  
Author(s):  
Joachim Offenberg ◽  
Sopon Havanon ◽  
Sanit Aksornkoae ◽  
Donald J. Macintosh ◽  
Mogens Gissel Nielsen
Keyword(s):  
Mangrove Ecosystem ◽  
Rhizophora Mucronata ◽  
Oecophylla Smaragdina ◽  
Weaver Ants

Biomass estimation equations for Norway spruce in New York

1986 ◽  
Vol 16 (2) ◽  
pp. 413-415 ◽  
Author(s):  
E. J. Jokela ◽  
K. P. Van Gurp ◽  
R. D. Briggs ◽  
E. H. White
Keyword(s):  
Norway Spruce ◽  
Strong Predictor ◽  
Allometric Equation ◽  
Site Quality ◽  
Biomass Estimation ◽  
Total Biomass ◽  
Dry Matter Accumulation ◽  
Individual Tree ◽  
Stem Wood ◽  
Estimation Equations

Biomass estimation equations for plantation-grown Norway spruce (Piceaabies (L.) Karst.) were developed from data of 30 sample trees and expressed using the linear form of the following allometric equation: In Y = b0 + b1 ln X + ln ε, where Y is dry weight and X is dbh or D2H. The accuracy of the equations for biomass estimates were ranked as follows: total tree > stem wood > stem bark > foliage > live branches > dead branches. Diameter alone was a strong predictor of biomass and the addition of height to the model only slightly reduced the standard error of the estimate for the stem component equations. Comparison of results to equations developed in Sweden showed similarity in predictions for total biomass, but also showed disparity in predictions for individual tree components. Factors that influence tree morphology and distribution patterns of dry matter accumulation, such as stocking and site quality, may be responsible for these differences.

scholarly journals INFLUENCE OF INTERSPECIFIC VARIATION ON TREE CARBON STOCK OF A BRAZILIAN CERRADO

2018 ◽  
Vol 41 (5) ◽  
Author(s):  
Sabina Cerruto Ribeiro ◽  
Laércio Antônio Gonçalves Jacovine ◽  
Carlos Moreira Miquelino Eleto Torres ◽  
Agostinho Lopes Souza
Keyword(s):  
Carbon Content ◽  
Carbon Balance ◽  
Carbon Stock ◽  
Interspecific Variation ◽  
Sensu Stricto ◽  
Allometric Equation ◽  
Average Value ◽  
Key Points ◽  
Dry Biomass ◽  
Number Of Individuals

ABSTRACT Cerrado is a biodiversity hotspot and possibly the most threatened tropical savanna in the world. Although Cerrado has an important role in the global carbon balance, studies about carbon stock in the biome are rare, especially with estimates per species. Thus, we estimated the carbon content and stock by species in a Cerrado area. We destructively sampled 120 trees from 18 species to determine tree aboveground biomass at a cerrado sensu stricto remnant. The carbon content in dry biomass was determined in laboratory and for the species not sampled an average value was used. The biomass of the remaining inventoried trees was estimated using an allometric equation. The carbon content in dry biomass had mean of 50.5 ± 0.20% and the carbon stock for the Cerrado remnant accounted for 22,385.46 kg ha-1. Results indicated that some species had higher carbon stock than others. The number of individuals, their size and wood density are key points that need to be considered in the evaluation of carbon stock in forests with large number of species. Maintaining species that contribute to higher carbon stock is essential to keep a positive carbon balance in Cerrado areas

scholarly journals The Production of Organic Matter from Rhizophora mucronata and Sonneratia alba at The Kajhu and Meunasah Mesjid Villages, Aceh Besar

Omni-Akuatika ◽  
2017 ◽  
Vol 13 (1) ◽  
Author(s):  
Mai Suriani ◽  
Dietriech G Bengen ◽  
Tri Prartono
Keyword(s):  
Organic Matter ◽  
Coastal Waters ◽  
Mangrove Ecosystem ◽  
Decay Rates ◽  
Litter Production ◽  
Rhizophora Mucronata ◽  
Decomposition Rates ◽  
Ecological Functions ◽  
Sonneratia Alba ◽  
Measure Decomposition

 Production and decomposition of mangrove litter could contribute organic matter and nutrients to the coastal waters. This study was to estimate the extent to which the rehabilitated mangrove of Rhizophora mucronata and Sonneratia alba contribute organic matter. This study was conducted from November 2015 to January 2016. Litter traps were used to collect the litter production and litterbags to measure decomposition rates. The results showed that the average of litter production for Sonneratia alba and Rhizophora mucronata was 4,38 g.m-2.day-1 and 3,61 g.m-2.day-1, respectively. However, Sonneratia alba apparently showed higher decay rates compare with Rhizophora mucronata. Nutrients element (N and P) released were 321,2 kg.ha-1.years-1 and 47,45 kg.ha-1.years-1 for Sonneratia alba; and 131,4 kg.ha-1.years-1 and 13,14 kg.ha-1.years-1 for Rhizophora mucronata. Overall, this study indicated that the mangrove rehabilitation in the area study contributed insignificantly carbon restocking the affected area, although it was able to provide ecological functions of this mangrove ecosystem.

scholarly journals The potential of Rhizophora mucronata and Sonneratia caseolaris for phytoremediation of lead pollution in Muara Angke, North Jakarta, Indonesia

2019 ◽  
Vol 20 (8) ◽  
Author(s):  
Maman Rumanta
Keyword(s):  
Heavy Metals ◽  
Anthropogenic Activities ◽  
Mangrove Ecosystem ◽  
Heavy Metal Accumulation ◽  
Physiological Adaptation ◽  
Lead Pollution ◽  
Rhizophora Mucronata ◽  
Mangrove Species ◽  
Sonneratia Caseolaris ◽  
Stems And Leaves

Abstract. Rumanta M. 2019. The potential of Rhizophora mucronata and Sonneratia caseolaris for phytoremediation of lead pollution in Muara Angke, North Jakarta, Indonesia. Biodiversitas 20: 2151-2158. Environmental pollution by heavy metals has become a serious problem in Jakarta Bay. Mobilization of heavy metals as a result of anthropogenic activities has caused the release of heavy metals into the environment, one of which is Pb. Several methods have already been used to clean up the environment from these kinds of contaminants, but most of them are costly and difficult to get optimum results. Recently, phytoremediation is an effective and affordable technological solution used to extract or remove inactive metals and metal pollutants from contaminated soil and water. This technology is environmentally friendly and potentially cost-effective. These study objectives are (i) to find the accumulating capability of Pb in each plant tissues (roots, stems, and leaves) of R. mucronata and S. caseolaris; (ii) to find stomatal morphological characters of R. mucronata and S. caseolaris. All samples (roots, stems, and leaves) were collected from Muara Angke mangrove forest in North Jakarta. The accumulation of Pb is higher in S. caseolaris leaves than in roots, and stems, and than those in R. mucronata. The concentrations of Pb in roots, stems, and leaves of S. caseolaris were respectively 4.83 μg/g, 3.37 μg/g and 15.57 μg/g and in R. mucronata were 10.50 μg/g, 5.13 μg/g and 13.33 μg/g. Generally, the stomata of mangrove species that live in polluted ecosystems are longer and wider than the stomata of the same mangrove species that live in a non-polluted ecosystem. This is strongly suspected of being related to the physiological adaptation of heavy metal accumulation. This study showed that S. caseolaris is the most suitable species as a phytoremediation agent in the Muara Angke mangrove ecosystem.

scholarly journals Mangrove Ecosystem Biodiversity in Malacca Strait and Its Economic Values to Local Community: A Case Study in Riau Coastline

2021 ◽  
Vol 16 (8) ◽  
pp. 1519-1528
Author(s):  
Zulkarnaini ◽  
Yuliasamaya ◽  
Syafriadiman
Keyword(s):  
Local Community ◽  
Mangrove Ecosystem ◽  
Local Communities ◽  
Soil Conditions ◽  
Field Observations ◽  
Rhizophora Mucronata ◽  
Rhizophora Apiculata ◽  
Important Value Index ◽  
Malacca Strait

The mangrove ecosystem holds a lot of potentials to be utilized by local communities in the Riau Coastline. Therefore, this study was carried out to assess the biodiversity of flora and fauna in the Riau Coastline mangrove ecosystem and its impacts on local communities. The transect was performed to identify soil conditions, distribution, and the dominance of flora species, while field observations and interviews with residents were conducted to determine the presence of fauna and discover the ecosystem’s benefit to the local community's economy. Based on the results, Rhizophora mucronata and Rhizophora apiculata has the highest relative dominance (RDC) and important value index in all observed stations. On the other hand, the fish/water biota species has the highest diversity and have economic that mostly serve as a catch for local fishermen. Ecotourism is also encouraged to boost the community's economy and aid ecological learning for sustainability purposes. The mangrove ecosystem's existence remains sustainable because fisheries are the main commodity, however, logging is less desirable as a source of income.

scholarly journals Estimasi Stok dan Serapan Karbon pada Mangrove di Sungai Tallo, Makassar

2017 ◽  
Vol 11 (1) ◽  
pp. 19 ◽  
Author(s):  
Rahman ◽  
Hefni Effendi ◽  
Iman Rusmana
Keyword(s):  
Dominant Species ◽  
Open Space ◽  
Mangrove Ecosystem ◽  
Co2 Absorption ◽  
Rhizophora Mucronata ◽  
The Third ◽  
Nypa Fruticans ◽  
Carbon Absorption ◽  
Stock Estimation ◽  
Avicennia Alba

Ekosistem mangrove memiliki kemampuan menyerap CO2 lebih tinggi dibandingkan dengan vegetasi tumbuhan lainnya. Namun upaya pengelolaannya sebagai kawasan penyimpan stok karbon masih belum maksimal. Kota Makassar memiliki Sungai Tallo yang sepanjang bantarannya ditumbuhi oleh vegetasi mangrove dan sangat potensial untuk dikelola sebagai ruang terbuka hijau. Hasil pengamatan menunjukkan bahwa Sungai Tallo terletak tepat di tengah kota Makassar dan sepanjang bantaran sungai didominasi oleh spesies Nypa fruticans dengan jumlah 18.514 pohon dan kerapatan 4.256 pohon/ha, menyimpan karbon sebesar 21,82 ton C/ha, menyerap 80,02 ton CO2/ha. Spesies dominan kedua adalah Rhizophora mucronata dengan jumlah 8.492 pohon dan kerapatan 2.352 pohon/ha, menyimpan karbon sebesar 19,94 ton C/ha, menyerap 73,13 ton CO2/ha. Spesies dominan ketiga yaitu Avicennia alba dengan jumlah 2.421 pohon dan kerapatan 3.228 pohon/ha, menyimpan karbon sebesar 53,96 ton C/ha, menyerap 197,87 ton CO2/ha. Nilai kerapatan dan kemampuan serapan mangrove tersebut sangat sesuai untuk dikelola pada ruang terbuka hijau penyuplai udara segar dan penyerap CO2.Stock Estimation and Carbon Absorption of Mangrove in Tallo River, MakassarAbstractThe mangrove ecosystem has a higher ability of CO2 absorption than other vegetations. However, the effort to establish the mangrove to be a carbon stock area has not been achieved. Makassar has Tallo River, covered with mangrove vegetation along its riverbank, which is potent to be managed as a green open space. The observations indicated that Tallo River was located in the center part of Makassar city and was dominated by Nypa fruticans along the riverbanks in 18,514 trees and a density of 4,256 trees/ha, stored carbon of 21.82 tons C/ha, and absorbs 80.02 tons CO2/ha. Rhizophora mucronata was the second dominant species in 8.492 trees and density of 2,352 trees/ha, stored carbon of 19.94 tons C/ha, and absorbs 73.13 tons CO2/ha. The third dominant species was Avicennia alba in 2,421 trees and density of 3,228 trees/ha, stored carbon of 263.85 tons C/ha, and absorbs 197.89 tons CO2/ha. The density and ability to absorb values of the mangrove is highly suitable to be managed for a green open space to supply fresh air and CO2.

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