scholarly journals Differential Response of Macrobenthic Abundance and Community Composition to Mangrove Vegetation

Forests ◽  
2021 ◽  
Vol 12 (10) ◽  
pp. 1403
Author(s):  
Sin-He Pan ◽  
Chuan-Wen Ho ◽  
Chiao-Wen Lin ◽  
Shou-Chung Huang ◽  
Hsing-Juh Lin
Keyword(s):  
Community Composition ◽  
Negative Relationship ◽  
Tree Density ◽  
Macrobenthic Community ◽  
Stem Density ◽  
Western Coast ◽  
Mangrove Forests ◽  
Mangrove Species ◽  
Mangrove Tree ◽  
Mangrove Vegetation

The mass planting of mangroves has been proposed as a mitigation strategy to compensate for mangrove loss. However, the effects of mangrove vegetation on the abundance and community composition of macrobenthos remain controversial. The macrobenthic communities in four intact mangrove forests with different conditions and the adjacent nonvegetated mudflats of two mangrove species with distinct stand structures on the western coast of Taiwan were examined. Some macrobenthic taxa occurred only in the mangroves, suggesting macrobenthic critical habitats. Seasonal shift in community composition was more pronounced in the mudflats than in the mangroves, possibly due to the rich food supply, low temperature, and shelter function provided by mangrove forests. However, crab density was always lower in the mangroves than in the mudflats. There was a negative relationship between the stem density of Kandelia obovata (S., L.) and infaunal density. The pneumatophore density of Avicennia marina (Forsk.) correlated negatively with epifaunal density. Our results show that the response of macrobenthic abundance and community composition to mangrove vegetation was inconsistent. We reason that mangroves are critical habitats for the macrobenthos in the mudflats. However, if mangrove tree density is high, we predict that the macrobenthic density will decrease. This suggests that at some intermediate level of mangrove tree density, where there are enough mangrove trees to harbor a macrobenthic community but not enough trees to significantly reduce this density, mangroves management can be optimally achieved to promote the presence of a diverse and dense macrobenthic community.

scholarly journals Diversity and characteristics of mangrove vegetation in Pulau Rimau Protection Forest, Banyuasin District, South Sumatra, Indonesia

2019 ◽  
Vol 20 (4) ◽  
pp. 1215-1221
Author(s):  
ERNIK YULIANA ◽  
YUNI TRI HEWINDATI ◽  
ADI WINATA ◽  
WIBOWO A DJATMIKO ◽  
ATI RAHADIATI
Keyword(s):  
Tree Species ◽  
Diversity Index ◽  
Forest Edge ◽  
Importance Value Index ◽  
Importance Value ◽  
Mangrove Species ◽  
Protection Forest ◽  
Mangrove Tree ◽  
Mangrove Vegetation ◽  
Study Sites

Abstract. Yuliana E, Hewindati YT, Winata A, Djatmiko WA, Rahadiati A. 2019. Diversity and characteristics of mangrove vegetation in Pulau Rimau Protection Forest, Banyuasin District, South Sumatra, Indonesia. Biodiversitas 20: 1215-1221. The purpose of the study was to analyze the flora diversity and characteristics of mangrove vegetation in Pulau Rimau Protection Forest, Banyuasin District, South Sumatra. Data collected were the number and girth diameter of mangrove tree species, and aquatic ecology parameters using transect method. The sample plots size were 2m×2 m; 5m×5 m; 10m×10 m; for seedling, sapling, and tree, respectively. The observation plots were arranged in a row of 120 m length on two sides of the forest edge, namely Calik Riverbank and Banyuasin Riverbank. Data were analyzed using importance value index (IVI), Simpson’s diversity index and Sørensen’s community similarity. The study revealed that there were differences in mangrove characteristics in two study sites. There were 57 plant species identified inside and outside sample plots, but only 15 species (26.32%) among them were categorized as true mangrove species. Inside the sample plots, there were 11 and 10 mangrove tree species recorded on the Calik Riverbank and Banyuasin Riverbank, respectively, but only 7 species among them were found in both sites. The mangroves on Calik Riverbank were dominated by Nypa (IVI 53.59%) and Bruguiera (51.12%), while those on Banyuasin Riverbank were dominated by Sonneratia (66.91%) and Avicennia (51.73%). The Simpson’s diversity index for Calik Riverbank and Banyuasin Riverbank was 0.82 and 0.78, respectively, whereas the Sørensen’s coefficient of community between the two sites was 0.67.

scholarly journals Biologi Mangrove Ditinjau dari Nilai Penting Keanekaragaman, Dominansi, Keragaman Di Pesisir Kecamatan Bonang, Demak

2019 ◽  
Vol 8 (4) ◽  
pp. 328-332
Author(s):  
Bima Agung Saputra ◽  
Rudhi Pribadi ◽  
Chrisna Adhi Suryono
Keyword(s):  
Exploratory Data Analysis ◽  
Tree Density ◽  
Mangrove Species ◽  
Role Of Government ◽  
Mangrove Vegetation ◽  
Exploratory Data ◽  
Mangrove Rehabilitation ◽  
Descriptive Method ◽  
Government Institution

ABSTRAK: Penelitian mengenai kajian kawasan kawasan rehabilitasi mangrove ini dilakukan di Desa Morodemak dan Desa Purworejo, Kecamatan Bonang, Kabupaten Demak. Tujuan penelitian ini untuk mengetahui kondisi eksisting struktur dan komposisi vegetasi mangrove serta mengkaji kegiatan rehabilitasi mangrove di Desa Morodemak dan Desa Purworejo, Kecamatan Bonang, Kabupaten Demak. Metode Penelitian yang digunakan adalah metode deskriptif eksploratif dengan analisa data struktur dan komposisi vegetasi mangrove dan presentasi peran masyarakat dan peran lembaga pemerintah/non pemerintah setempat. Hasil penelitian di Desa Morodemak dan Desa Purworejo ditemukan 9 spesies mangrove dari tiga komponen vegetasi yaitu mayor, minor dan asosiasi. Secara umun kerapatan kategori pohon (tree) di Lokasi I 3211 ind/ha, sementara di Lokasi II 3611 ind/ha. Kerapatan kategori anakan (sapling) di Lokasi I 533 ind/ha, sementara di Lokasi II ind/ha. Kerapatan kategori semai (seedling) di Lokasi I 450 ind/ha sementara di Lokasi II 1383 ind/ha. Peran masyarakat dan peran lembaga pemerintah/non pemerintah di Desa Purworejo lebih aktif jika dibandingkan Desa Morodemak. ABSTRACT: Research on the study of mangrove rehabilitation in Morodemak and Purworejo Village, Bonang District, Demak Regency. The purpose of this study to determine the existing conditions of the structure and composition of mangrove vegetation and to study the rehabilitation activities of mangroves in Morodemak and Purworejo Villages, Bonang District, Demak Regency. The research method used is descriptive method with exploratory data analysis mangrove vegetation structure, composition and presentase the role of society and the role of government institution. The results of the research in Morodemak and Purworejo Villages found 9 mangrove species from three vegetation components, namely major, minor and association. In general, the tree density in location I has an average of 3211 ind/ha, while in Location II is 3611 ind/ha. Sapling density at Location I averages 533 ind/ha, while in Location II the average is 1422 ind / ha. The seedling category density at Location I has an average of 450 ind/ha while in Location II an average of 1383 ind/ha. The role of the community and the role of government  in Purworejo Village is more active than Morodemak Village.

scholarly journals Vegetation Structure and Damage Level Mangrove Forest in Manomadehe Island, Subdistrict South Jailolo, North Maluku Province

2021 ◽  
Vol 21 (1) ◽  
pp. 222
Author(s):  
Salim Abubakar ◽  
Riyadi Subur ◽  
Masykhur Abdul Kadir ◽  
Rina Rina ◽  
Adi Noman Susanto ◽  
...  
Keyword(s):  
Relative Density ◽  
Vegetation Structure ◽  
Mangrove Forest ◽  
Mangrove Forests ◽  
Mangrove Species ◽  
Rhizophora Stylosa ◽  
Xylocarpus Granatum ◽  
Sonneratia Alba ◽  
Mangrove Vegetation ◽  
Ceriops Tagal

Mangrove forest is a natural resource typical of tropical coasts, which has multiple benefits with a very broad impact when viewed from social, economic and ecological aspects. Management of natural resources must be very prudent because it takes a long time to be able to recover when damage / extinction has occurred. The purpose of this study was to determine the composition of mangrove species, the structure of mangrove forest vegetation (species density, relative density of species, frequency of species, relative frequency of species, species cover, relative cover of species and important values) and to determine the level of damage. Extraction of mangrove vegetation using the "spot check" method. The transects are drawn perpendicular to the coastline along the mangrove vegetation. The composition of mangrove species were 7 species, namely Rhizophora apiculata, R. stylosa, Bruguirea gymnorrhiza, Ceriops tagal, Sonneratia alba, Xylocarpus granatum and Aegiceras floridum. In the vegetation structure, the highest density and relative density were found in Rhizophora stylosa and the lowest was Xylocarpus granatum. The highest species and relative frequencies were Rhizophora stylosa, R. apiculata and the lowest were Bruguiera gymnorrhiza. The highest type and closure were Sonneratia alba and the lowest was Ceriops tagal. Meanwhile, the highest importance was in Sonneratia alba and the lowest was Xylocarpus granatum. Overall, the density value of mangrove species on Manomadehe Island is 2796 trees / ha so that the condition of the mangrove forests on Manomadehe Island is still in the good category (very dense).

scholarly journals Short Communication: Species diversity of mangrove in Kutai National Park, East Kalimantan, Indonesia

2019 ◽  
Vol 20 (12) ◽  
Author(s):  
Erny Poedjirahajoe ◽  
Iin Sumbada Sulistyorini ◽  
Liris Lis Komara
Keyword(s):  
Species Diversity ◽  
National Park ◽  
Short Communication ◽  
Diversity Index ◽  
Line Transect ◽  
Mangrove Forests ◽  
Mangrove Species ◽  
Mangrove Tree ◽  
East Kalimantan ◽  
Study Results

Abstract. Poedjirahajoe E, Sulityorini IS, Komara LL. 2019. Short Communication: Species diversity of mangrove in Kutai National Park, East Kalimantan, Indonesia. Biodiversitas 20: 3641-3646. Kutai National Park (KNP) in East Kalimantan, Indonesia is blessed with natural mangrove forests. However, there is only very little information relating to the species composition and mangrove diversity. Therefore, this study was conducted to assess the mangrove tree species diversity and richness in Kutai National Park, East Kalimantan, Indonesia. The study results showed that the mangrove trees density was 1,214 trees/ha in the line transect vegetation survey with 1.7 ha plot. The number of mangrove species in KNP was 17 from 6 families. The dominant species with large numbers of individuals were Rhizophora mucronata, Rhizophora apiculata, and Bruguiera sexangula. The diversity index was low in mangroves in Pandan Bay Estuary, and Kaba Bay compared to that in Lombok bay’s mangroves.

Common allometric equations for estimating the tree weight of mangroves

2005 ◽  
Vol 21 (4) ◽  
pp. 471-477 ◽  
Author(s):  
Akira Komiyama ◽  
Sasitorn Poungparn ◽  
Shogo Kato
Keyword(s):  
Wood Density ◽  
Allometric Equations ◽  
Root Weight ◽  
Mangrove Forests ◽  
Mangrove Species ◽  
Trunk Diameter ◽  
Mangrove Tree ◽  
Pipe Model ◽  
Independent Variable ◽  
The Common

Inventory data on tree weights of 104 individual trees representing 10 mangrove species were collected from mangrove forests in South-East Asia to establish common allometric equations for the trunk, leaf, above-ground and root weight. We used the measurable tree dimensions, such as dbh (trunk diameter at breast height), DR0.3 (trunk diameter at 30 cm above the highest prop root of Rhizophora species), DB (trunk diameter at lowest living branch), and H (tree height) for the independent variable of equations. Among the mangrove species studied, the trunk shape was statistically identical regardless of site and species. However, ρ (wood density of tree trunk) differed significantly among the species. A common allometric equation for trunk weight was derived, when dbh2H or DR0.32H was selected as the independent variable and wood density was taken into account. The common allometric equations for the leaf and the above-ground weight were also derived according to Shinozaki's pipe model and its extended theory. The common allometric relationships for these weights were attained with given ρ of each species, when DB2 or dbh2 or DR0.32 was selected as the independent variable. For the root weight, the common equation was derived from the allometric relationship between root weight and above-ground weight, since these two partial weights significantly correlated with each other. Based on these physical and biological parameters, we have proposed four common allometric equations for estimating the mangrove tree weight of trunk, leaf, above-ground part and root.

scholarly journals Species diversity and composition of mangroves in Tacloban City, Philippines

2019 ◽  
pp. 67-75
Author(s):  
Teofanes Patindol ◽  
Eulito Casas
Keyword(s):  
Species Diversity ◽  
Stand Structure ◽  
Abundant Species ◽  
Shannon Index ◽  
Stem Density ◽  
Average Height ◽  
Mangrove Forests ◽  
Bruguiera Gymnorrhiza ◽  
Canopy Layer ◽  
Mangrove Species

This study reflects the present status of Tacloban City mangrove vegetation and would be useful for mangrove restoration program. Surveys of mangrove forests in Tacloban City were conducted from October to November 2017 in 12 selected sites. Quadrat method was used to assess the species composition and stand structure of the canopy layer, representing seaward, middle and landward zones. The mangrove forests in Tacloban City contain 23 mangrove species belonging to 12 families and 15 genera. Rhizophoraceae and Acanthaceae are the most dominating families. As per IUCN report, among the 23 species, 4 were recognized as threatened. These include the Endangered Camptostemon philippinensis, the Vulnerable Avicennia rumpiana and the Near Threatened Aegiceras floridum and Ceriops decandra. Rhizophora Apiculata is the most abundant species, followed by Sonneratia alba. Other abundant species are Avicennia officinalis, Avicennia marina and Rhizophora mucronata. The least abundant are Bruguiera gymnorrhiza, Camptostemon philippinensis and Xylocarpus granatum. The canopy layer is composed of small-sized trees with an average tree density of 1,678 per ha and stem density of 3,133 per ha. The average height and diameter are 6.15m and 8.95cm, respectively. Mangrove diversity is generally low. Shannon index of diversity value ranges from 0.762 to 1.132, with an average value of 0.914. Understory is characterized by few species of regenerants, low density and low species diversity.

scholarly journals Re-colonizing Mangrove species in tsunami devastated habitats at Nicobar Islands, India

Check List ◽  
2011 ◽  
Vol 7 (3) ◽  
pp. 253 ◽  
Author(s):  
Prabakaran Nehru ◽  
Paramasivam Balasubramanian
Keyword(s):  
Mangrove Forests ◽  
Bruguiera Gymnorrhiza ◽  
Anthropogenic Pressures ◽  
Mangrove Species ◽  
Mangrove Vegetation ◽  
Colonization Process ◽  
The Common ◽  
Nicobar Islands ◽  
First Time

Mangrove habitats are crucial for maintaining the biodiversity of coastal ecosystem. Climatic change, sea level rise and anthropogenic pressures are the major threats to mangrove forests. The Nicobar Islands comprised one of the pristine mangrove stands in India. The mega earthquake of >9 M and subsequent tsunami during 2004 caused destruction of over 70% of mangrove vegetation in Nicobar Islands. The present study was carried out in the Central Nicobar Group of Islands (Camorta, Nancowry, Katchall and Trinkat), where tsunami has entirely wiped out the mangrove vegetation. Re-colonization started on its own course. We enumerated nine species of mangrove plants and 30 species of mangrove associates from the surveyed locations. Lumnitzera racemosa has been recorded for the first time from the study area. Rhizophora mucronata and Bruguiera gymnorrhiza were the common pioneer mangrove species. Long-term monitoring of re-colonization process will help us in understanding succession of mangrove forests. 

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

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.

scholarly journals What lies beneath? Above ground and sediment carbon storage in mangroves along a sea to shore gradient in Lindi, Tanzania

2020 ◽  
Author(s):  
Georgia de Jong Cleyndert ◽  
Aida Cuni-Sanchez ◽  
Hamidu A Seki ◽  
Deo D Shirima ◽  
Pantaleo K.T. Munishi ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Basal Area ◽  
Carbon Stocks ◽  
Mangrove Sediment ◽  
Stem Density ◽  
Mangrove Forests ◽  
Tree Roots ◽  
Mangrove Tree ◽  
Sediment Carbon ◽  
And Storage

Abstract Background: Mangrove forests have gained recognition for their potential role in climate change mitigation due to the carbon sequestration of the productive ecosystems and storage in the sediments that are trapped by the mangrove tree roots and pneumatophores. Africa hosts about 19% of the world’s mangroves, yet there are relatively few studies that have examined the carbon stocks of African mangroves, and the studies available report great differences among sites and amongst the different pools of carbon stocks, particularly between the above ground carbon stored in trees (AGC) and organic carbon stored within the sediment - ‘soil organic carbon (SOC)’. We investigate if AGC and SOC carbon stocks differ with increasing seaward distance for estuarine mangroves in Tanzania and, how our results compare to those reported elsewhere across Africa.Results: AGC ranged between 10.9-54.9 Mg C ha-1. Stem density, basal area, mean diameter and mean height increased with increasing seaward distance, but percentage of small stems (5.0-9.9 cm diameter) decreased. SOC for 0-1m depth ranged from 153.7-483.6, with a mean of 301.7 Mg C ha-1. SOC was significantly negatively correlated with seaward distance. Overall, our estimates of AGC are similar to those reported elsewhere in Tanzania but our estimates of SOC are higher as we sampled at a greater depth. There are important methodological differences in previous studies in Africa. Conclusion:This study indicates that seaward distance has an important effect on both AGC and SOC stocks in the Lindi region of Tanzania and there is the need to standardise methodological approaches to make results easily comparable across sites. The high SOC value is likely to be much greater if the full extent of the sediment system is assessed and so if Tanzania and other African nations are to fully benefit from carbon offsetting schemes, it is essential that the contribution of mangrove sediment carbon is considered.

PROFIL KERAGAMAN VEGETASI EKOSISTEM MANGROVE DI DESA TAMUKU KABUPATEN LUWU UTARA

2019 ◽  
Vol 5 ◽  
pp. 104
Author(s):  
Suhendra Purnawan ◽  
Subari Yanto ◽  
Ernawati S.Kaseng
Keyword(s):  
Survey Methods ◽  
Mangrove Ecosystem ◽  
Line Transect ◽  
Mangrove Forests ◽  
Vegetation Diversity ◽  
Line Transect Survey ◽  
Analysis Technique ◽  
Mangrove Vegetation ◽  
Data Collection Technique ◽  
The Impact

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.

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