Structure and productivity along a tree height gradient in a Kandelia obovata mangrove forest in the Manko Wetland, Okinawa Island, Japan

The study was carried out to determine the nutrient budget of plants, sediments and nutrient dynamics in an Avicennia marina (Forsk.) Vierh., dominated forest in Vamleshwar near Narmada estuary, West Coast of Gujarat for a period of one year from November 2008 to October 2009. The average tree height of the mangrove is 1.5 to 2 m without much vertical stratification. Allometric methodology was used to measure the biomass, and yield a figure of 86.47 t ha-1 and the litter fall rate amounted to 2.9 t ha-1. Nutrient stocks of N, P and K in this mangrove were 137.05, 14.38 and 241.29 kg ha-1, with an annual accumulation of 55.74, 12.38 and 83.94 kg ha-1, and an annual return of 51.30, 10.83 and 13.52 kg ha-1, respectively, in the form of litter. The annual uptake for N, P and K were 61.04, 14.28 and 97.46 kg ha-1, and turnover rates of N, P and K were estimated at 3, 6 and 14 years, respectively, for the study period. Flow coefficients, which reveal the dynamic processes of nutrients between mangrove plants and sediments, are also explained. The present study concluded that the A. marina dominated mangrove plantation is more efficient in nutrient use and conservation.

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Characteristics of gap regeneration in mangrove forests of Dong Rui, Tien Yen, Quang Ninh

TAP CHI SINH HOC ◽

10.15625/0866-7160/v40n2.13243 ◽

2018 ◽

Vol 40 (2) ◽

pp. 129-137

Author(s):

Nguyen Hoang Hanh ◽

Mai Sy Tuan ◽

Pham Hong Tinh ◽

Nguyen Thi Hong Hanh

Keyword(s):

Mangrove Forest ◽

Satellite Image ◽

Mangrove Forests ◽

Forest Communities ◽

Kandelia Obovata ◽

Bruguiera Gymnorrhiza ◽

Rhizophora Stylosa ◽

Ecological Dominance ◽

Satellite Image Analysis ◽

Quang Ninh

Field surveys using unmanned aerial vehicle monitoring were conducted in combination with satellite image analysis to evaluate the characteristics of gaps inside mangrove forest vegetation in Dong Rui commune, Tien Yen district, Quang Ninh province as well as the natural regeneration inside these gaps. A total of 15 gaps was located in four survey plots totaling 22,500 m2, among which four different types of mangrove forest communities were found, being dominated by (1) Bruguiera gymnorrhiza; (2) Aegriceras corniculatum, Kandelia obovata, Rhizophora stylosa and Bruguiera gymnorrhiza; (3) Bruguiera gymnorrhiza, Rhizophora stylosa; and (4): Aegriceras corniculatum, Kandelia obovata, respectively. Based on observations from 2012 to 2018, changes in regenerated tree densities were similar between gaps with a poor diversity of 2–5 species resembling the composition of the surrounding canopy. In some gaps, species not found in the nearby vegetation were observed with lower densities. Thus, the regeneration and patching of the mangrove forest gaps in Dong Rui were quite uniform at a midium rate. Species composition inside gaps did not differ significantly from the surrounding magrove forest communities. However, the ecological dominance of each species varied over time, depending on several natural factors and human actitvities where gaps were formed..

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Crown shape dynamics of dense mangrove Kandelia obovata stands in Manko Wetland, Okinawa Island, Japan

Biodiversitas Journal of Biological Diversity ◽

10.13057/biodiv/d170264 ◽

2016 ◽

Vol 17 (2) ◽

pp. 865-872

Author(s):

KANGKUSO ANALUDDIN

Keyword(s):

Kandelia Obovata ◽

Okinawa Island ◽

Shape Dynamics ◽

Crown Shape

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Species composition, biomass, and net primary productivity of mangrove forest in Okukubi River, Okinawa Island, Japan

Regional Studies in Marine Science ◽

10.1016/j.rsma.2017.03.004 ◽

2017 ◽

Vol 12 ◽

pp. 19-27 ◽

Cited By ~ 11

Author(s):

Md. Kamruzzaman ◽

Akira Osawa ◽

Rashila Deshar ◽

Sahadev Sharma ◽

Kamara Mouctar

Keyword(s):

Species Composition ◽

Primary Productivity ◽

Mangrove Forest ◽

Net Primary Productivity ◽

Okinawa Island

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Mangrove vegetation in Amazonia: a review of studies from the coast of Pará and Maranhão States, north Brazil

Acta Amazonica ◽

10.1590/s0044-59672008000300004 ◽

2008 ◽

Vol 38 (3) ◽

pp. 403-420 ◽

Cited By ~ 60

Author(s):

Moirah Paula Machado de Menezes ◽

Uta Berger ◽

Ulf Mehlig

Keyword(s):

Mangrove Forest ◽

Local Population ◽

Tree Height ◽

North Coast ◽

Litter Fall ◽

Mangrove Tree ◽

The North ◽

North Brazil ◽

Associated Species ◽

Rural Construction

The present study is a compilation of the literature about vegetation of mangrove forest of the north coast of Brazil. It synthesizes the knowledge about this important ecosystem and lists the currently available literature. The study focuses on the coast of Pará and Maranhão states, which are covered by a continuous belt of mangroves. The mangrove flora comprises six mangrove tree species and several associated species. Mangrove tree height and stem diameter vary as a function of abiotic local stand parameters. Seasonal variation in rainfall and salinity affect the species' phenology and litter fall. Local population use products derived from mangrove plants for different purposes (e.g. fuel; medicinal; rural construction). The increase in the coastal population has given rise to conflicts, which impact on mangrove forest.

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Dynamics of Aboveground Mass Hierarchy in Overcrowded Mangrove Kandelia Obovata Stands on Okinawa Island, Japan

APCBEE Procedia ◽

10.1016/j.apcbee.2013.05.008 ◽

2013 ◽

Vol 5 ◽

pp. 38-43

Author(s):

M. Kamara ◽

R. Deshar ◽

M. Kamruzzaman ◽

K. Analuddin ◽

A. Hagihara

Keyword(s):

Mass Hierarchy ◽

Kandelia Obovata ◽

Okinawa Island

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Self-thinning of stems, branches, and leaves in overcrowded mangrove Kandelia obovata stands on Okinawa Island, Japan

Aquatic Botany ◽

10.1016/j.aquabot.2014.06.010 ◽

2014 ◽

Vol 119 ◽

pp. 20-27 ◽

Cited By ~ 7

Author(s):

Mouctar Kamara ◽

Rashila Deshar ◽

Kangkuso Analuddin ◽

Md Kamruzzaman ◽

Akio Hagihara

Keyword(s):

Kandelia Obovata ◽

Okinawa Island

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Relationship analysis of vegetation structural properties and the aboveground carbon stock of mangrove forest

E3S Web of Conferences ◽

10.1051/e3sconf/202020002020 ◽

2020 ◽

Vol 200 ◽

pp. 02020

Author(s):

Eva Purnamasari ◽

Muhammad Kamal ◽

Pramaditya Wicaksono

Keyword(s):

Structural Properties ◽

Mangrove Forest ◽

Canopy Cover ◽

Tree Height ◽

Mangrove Ecosystem ◽

Mangrove Forests ◽

Mangrove Species ◽

Relationship Analysis ◽

Aboveground Carbon ◽

Mangrove Tree

Mangrove forests have important ecological functions as a controller of environmental quality in coastal areas and absorber of atmospheric carbon. The mangrove ecosystem has a unique vegetation structure which form vegetation zonation that consists of different forest stands characteristics and tree species. This study aims to analyze the relationship between vegetation structural properties and the estimated aboveground carbon (AGC) stock of mangrove forest in Bedul mangrove, Banyuwangi, East Java, Indonesia. The study was conducted by field observation at some purposively selected sample locations. Field measurement was aimed to collect data about mangrove tree diameter at breast height (DBH), species, tree height, and fractional canopy cover. Mangrove biomass was indirectly calculated by allometric method based on mangrove species to estimate AGC in mangrove stands. The highest total AGC found in this study was 114.09 tons/ha at Rhizophora mucronata dominated forest, while the lowest total AGC was 12.86 tons/ha with Ceriops tagal as the dominant species. The AGC estimation in mangrove stands correlated positively with DBH and tree height. However, the biomass content and AGC are affected by the number of mangrove stands. The difference in the number of stands affect the amount of carbon content at each sample point.

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