scholarly journals Production of Rhizophora Mangrove Leaf Litter in The Sungai Bersejarah Mangrove Ecosystem, Siak Regency

2021 ◽  
Vol 934 (1) ◽  
pp. 012073
Author(s):  
E Efriyeldi ◽  
B Amin ◽  
T Hersa

Abstract The mangrove ecosystem is one of the coastal ecosystems that has important ecological roles and functions in supporting marine and fishery resources. Marine and fisheries resources are largely determined by the contribution of mangrove litter. The aims of this study was to determine the production of Rhizophora mangrove leaf litter in Sungai Bersejarah mangrove ecosystem, and to determine the value of environmental parameters related to litter. The research was conducted in January until March 2021 in Sungai Bersejarah mangrove area Kayu Ara Permai, Siak Regency. Line transect plot were used to calculate the density of Rhizophora. Rhizophora litter production was measured using the trap net method placed at three sampling site. Three litter trap nets measuring 1 m x 1 m are placed at each station. Rhizophora tree density ranges from 316 - 444 ind./ha. The production of Rhizophora mangrove leaf litter in Sungai Bersejarah mangrove ecosystem was 0.82 – 1.39 g/m2/day (3.00 – 5.09 ton/ha/year), average was 4.11 ton/ha/year. Analysis of variance test showed that there was a significant difference in Rhizophora leaf litter production between sampling points with different Rhizophora tree densities (p<0.05). Mangrove vegetation density has a moderate relationship (r=0.43) to the production of Rhizophora mangrove leaf litter. Environmental parameters indicate that the condition of the Sungai Bersejarah mangrove ecosystem is still good and can support the life of mangrove vegetation.

2021 ◽  
Vol 5 (2) ◽  
pp. 21-30
Author(s):  
Roni Haposan Sipayung

Rehabilitation of mangrove forests is very important to maintain ecosystem stability and increase the productivity of mangrove forests. The success of mangrove forest rehabilitation can be seen by the density of mangrove vegetation and the increase in mangrove crabs. Mangrove crab is the main commodity for farming communities because in addition to playing an important role in the mangrove ecosystem, it also has high economic value so it needs to be developed to increase people's income. This research was conducted with the aim of knowing the density of mangrove vegetation and crab density in different planting years and the effect of mangrove habitat characteristics on crab density. The research was conducted in three different planting years, namely 2003, 2005, and 2006. Each planting year consisted of a front zone, a middle zone and a back zone. In each zone a measuring plot with a size of 5 m x 5 m was made to collect data on vegetation density, temperature, mud thickness, salinity, acidity, and dissolved oxygen (DO). Then in the 5 m x 5 m plot, a 1 m x 1 m plot was made to collect data on the number of crabs. Data analysis used regression equation and ANOVA difference test. The results showed that the highest vegetation density was in the back zone of the 2006 planting year with a density of 2160 individuals/ha, while the highest density of crabs was in the 2005 planting year with a density of 12111.11 individuals/ha. Regression analysis showed the effect of temperature, mud thickness and salinity variables on crab density with the equation Y = 3.447 - 0.044X1 - 0.009X2 - 0.230X3 with R = 0.809. In the different ANOVA test, only the thickness of the mud had a significant difference at three years of planting (0.00 < 0.05).


2019 ◽  
Vol 4 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Arthur Muhammad Farhaby ◽  
Arinda Unigraha Utama

Ekositem mangrove merupakan ekosistem pesisir yang memiliki peran dan fungsi ekologis penting dalam menunjang sumber daya perairan dan perikanan. Keberadaan ekosistem mangrove yang lestari dan sehat tidak dapat dipisahkan oleh suplai kandungan bahan organik yang berasal dari serasah mangrove. Serasah merupakan guguran struktur vegetatif dan reproduktif yang disebabkan oleh faktor ketuaan, stress oleh faktor mekanik, ataupun kombinasi dari keduanya dan kematian serta kerusakan dari keseluruhan tumbuhan oleh iklim (hujan dan angin). Tujuan dari penelitian ini adalah untuk mengetahui produksi serasah daun mangrove, membandingkan produksi serasah beberap jenis mangrove yang dominan terdapat di Pantai Mang Kalok, serta mengetahui nilai parameter lingkungan yang berkaitan dengan serasah. Penelitan ini dilaksanakan pada bulan Januari-Maret 2018 bertempat di Pantai Mang Kalok, Kecamatan Sungailiat, Kabupaten Bangka. Metode yang umum digunakan untuk pengambilan produksi serasah adalah metode litter-trap (Jaring penampung serasah). Produksi serasah daun mangrove di Pantai Mang Kalok lebih banyak dihasilkan dari jenis Ceriops decandra dengan massa 185,7gr/m2/30hari dibandingkan dengan jenis Rhizophora mucronata yang hanya memproduksi 119,6gr/m2/30hari. Adapun untuk total produksi serasah daun mangrove di Pantai Mang Kalok adalah 305,3 gr/m2/30hari atau 10,17 gr/m2/hari. Sedangkan parameter lingkungan menujukan kondisi perairan Pantai Mang Kalok masih baik dan dapat mendukung proses penyerapan bahan organik dari serasah daun mangrove.ANALYSYS OF MANGROVE LITTER PRODUCTION ON MANG KALOK BEACH, BANGKA REGENCY. The mangrove ecosystem is a coastal ecosystem that has important ecological roles and functions in supporting marine resources and fisheries. The existence of a sustainable and healthy mangrove ecosystem cannot be separated by the supply of organic matter from mangrove litter. Litter is vegetative and reproductive structures avalanches caused by the factor of aging, stress by mechanical factors, or a combination of both and the death and destruction of the whole plant by the climate (rain and wind). The purpose of this study was to determine the production of mangrove leaf litter, compare the production of litter of several dominant types of mangrove found in Mang Kalok Beach, and to determine the value of environmental parameters related to litter. Research was conducted in January until March 2018 in Mang Kalok Beach, District Sungailiat, Bangka. A common method used for making the production of litter is litter-trap method (Net container litter). The production of mangrove leaf litter in Mang Kalok Beach is more produced from the type Ceriops decandra with a mass of 185.7gr / m2 / 30 days compared to the type of Rhizophora mucronata which only produces 119.6gr / m2 / 30 days. The total production of mangrove leaf litter at Mang Kalok Beach is 305.3 gr / m2 / 30 days or 10.17 gr / m2 / day. While the environmental parameters show that the condition of Mang Kalok Beach is still good and can support the process of absorption of organic matter from mangrove leaf litter.


2019 ◽  
Vol 5 ◽  
pp. 104
Author(s):  
Suhendra Purnawan ◽  
Subari Yanto ◽  
Ernawati S.Kaseng

This study aims to describe the profile of vegetation diversity in the mangrove ecosystem in Tamuku Village, Bone-Bone-Bone District, North Luwu Regency. This research is a qualitative research using survey methods. The data collection technique uses the Quadrant Line Transect Survey technique. The data analysis technique uses the thinking flow which is divided into three stages, namely describing phenomena, classifying them, and seeing how the concepts that emerge are related to each other. The results of this study are the profile of mangrove vegetation in Tamuku Village, which is still found 16 varieties of true mangrove vegetation and 7 varieties of mangrove vegetation joined in the coastal area of Tamuku Village, Bone-Bone District, North Luwu Regency, South Sulawesi. The condition of mangrove vegetation in Tamuku Village is currently very worrying due to human activities that cause damage such as the project of normalization of flow, opening of new farms, disposal of garbage, water pollution due to chemicals, and exploitation of mangrove forests for living needs. The impact is ecosystem damage and reduced vegetation area as a place to grow and develop mangroves.


2016 ◽  
Vol 1 (1) ◽  
pp. 1
Author(s):  
I Wayan Eka Dharmawan ◽  
Neviaty P. Zamani ◽  
Hawis H. Madduppa

<strong>Decomposition Rate of Leaf Litter in The Mangrove Ecosystem of Kelong Island, Bintan Regency.</strong> The mangrove forests in the southeastern part of Kelong Island have abundant carbon reserves that indicate high primary productivity areas. Decomposition of leaf litter, as a part of regional productivity, produces simple essential nutrients utilized to sustain the growth of mangroves. The purpose of this study was to determine the decomposition rate of leaf litter in each zone of the study, the Landward (L), Middlezone (M), and Seaward (S) which is distinguished by the abundance of plant species and in situ environmental parameters. The experiment was conducted in March–May 2015 in the mangrove areas of Island Kelong, Bintan regency. The decomposition process was observed at six time intervals, i.e. 2, 4, 7, 14, 28, and 42 days using net bag containing 10 g of wet leaves placed on the substrate surface. The results showed that L was a zone with highest percentage of decomposition (56.34 ± 20.58%) compared to the M and S, respectively for 51.59 ± 15.46% and 51.09 ± 8.70%. The highest rate of litter decomposition in zone L was 1.40 ± 0.82 g·m-2·day-1 that was significantly different from the zones M and S, respectively of 0.83 ± 0.89 g·m-2·day-1 and 0.78 ± 0.70 g·m-2·day-1.  Analysis of the coefficient of decomposition rate (k) indicated that the rate of decomposition in this region was high (k &gt; 0.01). The decomposition rate has a significant correlation with the abundance of mangrove species, the salinity value of the water, and soil temperature.


2017 ◽  
Vol 8 (2) ◽  
pp. 613-624
Author(s):  
Nella Tri Agustini ◽  
Dietriech G. Bengen ◽  
Tri Prartono

Lokan shell Geloina erosa closely related to mangrove ecosystem in Enggano island. Mangrove is one supplier of organic materials required by Lokan shell. The research conducted in September 2015 - January 2016 at mangrove ecosystems in Kahyapu coastal area, aims to analyse lokan shells Geloina erosa conditions and its association with mangrove ecosystems. Sampling of mangrove vegetation was taken using line transect and lokan shell sampling using plot in mangrove ecosystem. The results show that mangrove condition of the Kahyapu coastal area was in healthy condition for the growth of lokan shell. Lokan shell are significantly assosiated with mangrove in Kahyapu coastal area of Enggano Island.


2020 ◽  
Vol 25 (3) ◽  
pp. 323-333
Author(s):  
Rahman Rahman ◽  
Yusli Wardiatno ◽  
Fredinan Yulianda ◽  
Iman Rusmana

Mangrove litter production is important in the displacement of organic matter from mangrove vegetation to water such as in the coast of West Muna Regency. However, one factor influencing it is the frequency of rainfall. This research, therefore, aims to determine the influence of the frequency of rainfall in mangrove ecosystem by obtaining data through the fractional wet weight. The results showed that the biomass fraction with the largest amount were Rhizophora mucronata, Rhizophora apiculata, and Sonneratia alba with of 31.59; 31.07; and 30.96%, respectively, while the lowest was Rhizophora stylosa, Bruguiera cylindrica, and Bruguiera gymnorrhiza with of 30.07; 30.10; and 31.95%, respectively. The species with the largest leaf litter production was Bruguiera cylindrica, with of 1.72 g.m-2.day-1 which occurred in April and the lowest was Rhizophora apiculata, 0.24 g.m-2.day-1 in August. The species with the largest leaf litter production was Bruguiera cylindrica, 1.96 g.m-2.day-1 which occurred in May and the lowest was Sonneratia alba, 0.29 g.m-2.day-1 in August. In addition, the species with the largest fruit litter production was Rhizophora apiculata, 1.76 g.m-2.day-1 in April and the lowest was Sonneratia alba, 0.32 g.m-2.day-1 in September. The total litter production was 18,75 g.m-2.day-1 consisted of 6,69 g.m2.day-1 leaf litter, 6,54 g.m-2.day-1 branch litter, and 5,52 g.m-2.day-1 fruit litter. The higher the frequency of the rain, the greater the litter production.   Keywords: biomass fraction, seasonal litter production, West Muna Regency


2018 ◽  
Vol 5 (2) ◽  
pp. 189
Author(s):  
Syahrial Syahrial ◽  
Dietriech G Bengen ◽  
Tri Prartono ◽  
Bintal Amin

The decline in mangrove vegetation density and the area of mangrove forests in the coastal province of Riau occurred due to the logging of mangrove forests and the conversion of mangrove forests into other uses such as industrial estates. This study aims to collect a database of mangrove ecosystems which includes the ecological structure of R. apiculata in Riau Province. Collecting data of mangrove vegetation condition was done by transect line and plot. The line transect was drawn from the reference point (the outer mangrove stand) with the direction perpendicular to the coastline to the mainland and made plots according to the category. The results showed that the population of R. apiculata was found in large numbers at Station 3 (350 ind) and a small/small amount was found at Station 1 (137 ind). In addition, Stations 1, 2 and 4 have only one grouping population of R. apiculata based on the Bhattacharya method, while Station 3 has two groupings. Furthermore, the highest R. apiculata density for tree category was obtained at Station 4 (1433.33 ind/m2), saplings category at Station 3 (10488.89 ind/m2) and seedlings category at Station 4 (3666667 ind/m2). Furthermore the water temperature ranged from 28.3 – 30.7°C, salinity 27.3 – 31.3, pH 7.3 – 7.9, DO 5.2 – 6.4 and redox potential ranged from 102 – 124 mV. Based on the standard criteria and guidelines for determining mangrove damage according to the Decree of the Minister of Environment No. 201 of 2004, the population density of R. apiculata at the research location is still classified as medium and refers to the Decree of the State Minister of Environment No. 51 of 2004 concerning Sea Water Quality Standards for Marine Biota, as a whole the range of measured water quality parameters is still within tolerance limits for life mangroves.


2020 ◽  
Vol 21 (11) ◽  
Author(s):  
Adilah Dinilhuda ◽  
Aji Ali Akbar ◽  
Jumiati ◽  
Henny Herawaty

Abstract. Dinilhuda A, Akbar AA, Jumiati, Herawati H. 2020. Potential of mangrove ecosystem as carbon storage for global warming mitigation. Biodiversitas 21: 5353-5362. The mangrove ecosystem in Karimunting Bay of West Kalimantan, Indonesia is one of the conservation areas with an area of 138.2 ha. Vegetation making up of that mangrove ecosystem is dominated by Avicennia marina. The existence of mangroves has a role in carbon storage. The ability to store carbon in mangrove forest ecosystems is four times greater than in other tropical forests around the world. Mangrove stems have the greatest ability in storing carbon by up to 55.52%. The research objective was to analyze the potential for carbon storage in the fringe mangrove ecosystem which was dominated by A. marina. This research method is based on a survey of vegetation density in the field. The survey was carried out in Karimunting Bay in three parts of the bay, north, central, and south. Each part of the bay consists of two locations, namely at the front of the breakwater towards the sea and behind the breakwater towards the land. Each location consisted of a plot of 10 x 10 with five replications. The vegetation parameters measured are the types of growth forms, the mangrove ecosystem species, and the diameter and height of the trees, as well as environmental parameters (pH, temperature, and salinity). Destructive method was used on A. marina stems for estimating analysis of mangrove carbon storage in the laboratory. A. marina stem samples were used to test the carbon content with LOI (Lost on Ignition) analysis. Analysis of changes in mangrove area is based on the 2009 and 2019 landscape images. The results show that the mangrove ecosystem of Karimunting Bay has a total density of 177,480 individuals/ha. The amount of carbon storage reached 99,231  mg/ha in 2019 and predictions of total carbon storage over the last 10 years are as much as 13,717,951 tons. Deposits of carbon in fringe mangrove illustrate the carbon dioxide absorption potential of 36,390,608 tons of CO2. The amount of CO2 absorption in fringe mangrove ecosystem type plays a role in reducing greenhouse gas (GHG) emissions with a conditional target according to the Nationally Determined Contribution (NDC) in 2030 of 834 million tons of CO2 to prevent temperature increases.


2021 ◽  
Author(s):  
Chithra P ◽  
Sunil Kumar R

Abstract Litter production and its decomposition is a major nutrient source for mangrove ecosystems. The bacterivores nature of ciliates in mangrove leaf litters, increase the mineralization and making nutrients more available to the next trophic level. This study was conducted to access the species composition, diversity and abundance of ciliates in mangrove leaf litters. Monthly samples were collected for one year (June 2014 – May 2015) from ten selected stations. Eight physicochemical variables such as temperature, dissolved oxygen, pH, conductivity, chloride, sulfate, nitrate, and phosphate were also monitored during the study. Taxonomic studies recorded 115 species of ciliates belonging to 16 subclasses, among them Peritricha represent the subclass having the maximum species number and abundance followed by Suctoria. Vorticella companula records the maximum abundance and dominance index followed by Euplotes minuta. Analyzing the seasonal distribution of ciliates, a maximum number of species were recorded during post-monsoon and minimum during monsoon. The study establishes the distributional difference, diversity and abundance of peritrich ciliates on mangrove leaf litters according to seasonal fluctuations. Multivariate statistical analysis of different environmental parameters regarding species diversity and abundance of mangrove ciliates, it was found that the environmental parameters have an impact on the distribution and diversity of ciliates in mangrove leaf litters. The study signifies the importance of leaf litters and environmental variables in the dynamics of ciliates composition and abundance.


2018 ◽  
Vol 6 (2) ◽  
pp. 53
Author(s):  
Fadli Tidore ◽  
Antonius Rumengan ◽  
Calvyn F.A. Sondak ◽  
Remy E.P. Mangindaan ◽  
Heard C.C. Runtuwene ◽  
...  

Global warming is one of the environmental issues related to climate change. Coastal blue carbon ecosystems such as mangrove and seagrass have ability to combat global warming. Mangrove ecosystem has an important ecological function in efforts to mitigate global warming, by carbon storage. This study was done in Lansa Village mangrove forest and focused on mangrove leaf litter. The purpose of this study was to estimate carbon content in mangrove leaf litter. Leaf litter samples were collected by using a 1x1 m2 litter trap, which was made of black nylon with a mesh size of about 0.2 cm, 8 traps were put under mangrove trees canopy, with a height of 1.5 m above sea level or at the highest tide. The samples were taken and observed every 7 days. The samples were analyzed by using Dry-Ash Method. The results showed that the average litter production of gram wet weight (Gbb) and gram dry weight obtained during the study were 122.97 gbb m2/28 days, 4.39 gbb m2/28 days, 47.69 gbk m2/28 days, 1.83 gb m2/day. The average of mangrove leaf litter biomass is 30.12 g m2. The highest amount of carbon storage in mangrove litter was 19.30 gram C. The average value of the percentage of carbon content of all plots was 31.38% per day. Based on these results the estimated amount of carbon removal in mangrove leaves was 2.16 t C ha-1 y-1 or 337.18 t C y-1.and 1,237.45 t CO2 y-1.Ekosistem mangrove memiliki fungsi ekologis yang sangat penting dalam upaya mitigasi pemanasan global, yakni sebagai penyerap dan penyimpan karbon Hutan mangrove juga memiliki peran sebagai penyerap karbon dioksida (CO2) dari udara sehingga sangat berguna untuk mitigasi perubahan iklim. Tujuan dari penelitian ini adalah untung mengestimasi kandungan karbon pada serasah daun mangrove di hutan mangrove Desa Lansa, Kecamatan Wori, Kabupaten Minahasa Utara. penelitian ini dilakukan menggunakan metode litter trap yang berukuran 1x1 m2, yang terbuat dari nylon berwarna hitam dengan ukuran mata jaring (mesh size) sekitar 0,2 cm, sebanyak 8 buah dipasang di bawah kanopi pohon mangrove, dengan ketinggian 1,5 m di atas permukaan air laut atau pada pasang tertinggi untuk menampung jatuhnya serasah dan diamati setiap 7 hari. Hasil penelitian diperoleh rata-rata produksi serasah gram berat basah (Gbb) dan gram berat kering yang didapat selama penelitian, sebesar 122,97 gbb/m2/28hr, 4,39 gbb/m2/hr, 47,69 gbk/m2/28hr, 1,83 gbk/m2/hr. rata-rata biomassa serasah daun mangrove sebesar 41,07. Jumlah simpanan karbon tertinggi pada serasah mangrove sebesar 19,30 gram C. Nilai rata-rata persentase kandungan karbon dari semua plot adalah sebesar 31,38% per hari, berdasarkan hasil penelitian jumlah estimasi kandungan karbon yang tersimpan pada serasah daun mangrove 2,16 ton/ha/tahun.


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