scholarly journals Diversity of Mushroom Coral (Fungidae) in Siladen Waters, North Minahasa

2014 ◽  
Vol 1 (4) ◽  
pp. 158 ◽  
Author(s):  
Bambang Hermanto
Keyword(s):  
Southeast Asia ◽  
Shallow Water ◽  
Coral Species ◽  
Diversity Index ◽  
Reef Slope ◽  
High Abundance ◽  
Research Use ◽  
Pacific Region ◽  
Mushroom Coral ◽  
Belt Transect

Mushroom coral are well known in the waters of southeast asia because in this region has encountered in high abundance in shallow water and reef slope. Research on the diversity of mushroom coral (Fungiidae) conducted in July in the sea of Siladen island with four observation stations, they are Siladen I, Siladen II, Siladen III and Siladen IV. The research aims to determine mushroom coral species and diversity in the sea of Siladen Island, North Minahasa. This research use belt transect method and be extends parallel of the shoreline with 50x3m length of transects. The results showed that 13 species from seven genera were recorded. They are Fungia, Heliofungia, Ctenactis, Herpolitha, Polyphyllia, Sandalolitha and Podabacia. The number of coral species are found in the sea of Siladen island reached 32% of all coral species in the tropical Indo-Pacific region. Diversity Index of mushroom coral in the Siladen waters ranged from 0.837–0.97. Mushroom coral density each station ranged from 0,11-0,22 ind/m2.Keywords : Diversity, mushroom coral, Siladen Island, North Minahasa

Biodiversitas dan Sebaran Karang Jamur (Fungiidae) di Perairan Teluk Amurang, Minahasa Selatan

2017 ◽  
Vol 2 (3) ◽  
pp. 13
Author(s):  
Bambang Hermanto
Keyword(s):  
Essential Role ◽  
Diversity Index ◽  
Medium Level ◽  
Mushroom Coral ◽  
Belt Transect ◽  
The One ◽  
High Level ◽  
Richness Index ◽  
Unique Species ◽  
Range Of Values

<strong>Biodiversity and Distribution of Mushroom Coral (Fungiidae) in The Amurang Bay, South Minahasa.</strong> Mushroom coral is the one of sclerectinians that has essential role to form coral reefs. This kind of species act as a microhabitat for other marine organisms such as shrimp. cryptobenthic fish, barnacle and crab. Most of these unique species have an ability to move from one habitat to another during benthic phase. The aim of this research was to determine the community structure and distribution of mushroom corals. This research was conducted in February 2017 at 4 research stations using belt transect method with  50x2m<sup>2</sup> length of transects. The results showed that 431 individuals consisting of 19 species and 11 genus were recorded. Generally, the range of values of diversity index (H) was between 0,85-1,06  (low to medium level). The evennes index (J) values was ranged from 0,81 to 0,89 (high level) while the richness index (D) was 2,47-3,58 (low level). Lythophyllon repanda, Lythophyllon concinna and Fungia fungites were the most dominant mushroom coral spesies in the Amurang Bay waters.

scholarly journals Community Structure Of Mushroom Coral (Fungiidae) In Banggai Island , Central Sulawesi

2016 ◽  
Vol 3 (2) ◽  
pp. 101
Author(s):  
Bambang Hermanto ◽  
Jemmy Souhoka
Keyword(s):  
Community Structure ◽  
Species Composition ◽  
Coral Species ◽  
Diversity Index ◽  
Hard Coral ◽  
Dominance Index ◽  
Free Living ◽  
Substrate Structure ◽  
Mushroom Coral ◽  
Central Sulawesi

Mushroom coral is one of the component of hard coral family in ordo Scleratinia where this life was free living on substrate. Structure community of mushroom coral study in the waters of the Banggai Archipelago in Central Sulawesi province has not been done much. Observation on community structure of mushroom coral at Banggai Archipelago waters was conducted on July 2011. The purpose of this study  to determine the species composition, diversity, evenness, density and dominance species of musrhoom coral.The method used in this research is belt transects that made ​​ parallelly extended to the shoreline with the size of 100 x 3 m2. Mushroom coral species observation done visually by counting the number of species.  It was found 27 species belong to 10 genus of mushroom corals. The highest diversity index (H) was 1,19 at station 9 and the minimum was 0,95 at station 4.  The highest avenness index (j) was 0,69 at station 3 and the minimum was 0,44 at station 8.  The highest dominance index (D) was 0,14 at station 7 and minimum was 0,08 at station 6.  Identification results shows that there are 5 species of mushroom coral found in the 9 station, which is Fungia concinna, F. repanda, F. fungites, F. costulata and Herpolita limax. Keywords : community structure, mushroom coral, banggai archipelago, Central Sulawesi   ABSTRAK Karang jamur merupakan salah satu family karang batu yang masuk dalam ordo Scleractinia dimana hidupnya bebas pada substrat. Penelitian mengenai struktur komunitas karang jamur di perairan kepulauan Banggai propinsi Sulawesi Tengah belum banyak dilakukan. Pengamatan struktur komunitas karang jamur di perairan Kepulauan Banggai telah dilakukan pada bulan Juli 2011. Tujuan penelitian ini yaitu untuk melihat komposisi jenis, keanekaragaman jenis, kemerataan jenis, kepadatan dan dominansi jenis karang jamur.  Metode yang digunakan dalam penelitian ini yaitu transek sabuk yang dibuat memanjang garis pantai dengan luas transek 100 x 3m². Pengamatan jenis karang jamur dilakukan secara visual dengan menghitung jumlah tiap jenis.  Hasil analisis menunjukkan jumlah jenis karang jamur yang ditemukan sebanyak 27 jenis yang mewakili 10 marga.  Indeks keanekaragaman jenis (H) tertinggi dijumpai di stasiun 9 sebesar 1,19 dan terendah di stasiun 4 sebesar 0,95.  Indeks kemerataan jenis (j) tertinggi ditemukan di stasiun 3 sebesar 0,69 dan terendah di stasiun 8 sebesar 0,44.  Indeks dominansi jenis (D) tertinggi dijumpai di stasiun 7 sebesar 0,14 dan terendah di stasiun 6 sebesar 0,08.  Hasil identifikasi jenis menunjukkan ada 5 jenis karang jamur yang ditemukan di 9 stasiun yaitu Fungia concinna, F. repanda, F. fungites, F. costulata dan Herpolita limax. Kata kunci : Struktur komunitas, Karang jamur, Kepulauan Banggai

Challenges in Shallow Water CSEM Surveying: A Case History from Southeast Asia

2007 ◽  
Author(s):  
Sandeep Kumar Chandola ◽  
Rashidah Bt. A. Karim ◽  
Amy Mawarni ◽  
Russikin Ismail ◽  
Noreehan Shahud ◽  
...  
Keyword(s):  
Southeast Asia ◽  
Shallow Water ◽  
Case History

Japan’s Free and Open Indo-Pacific Vision under Suga: Transition and Future Challenges in Southeast Asia

2021 ◽  
Vol 13 (03) ◽  
pp. 84-100
Author(s):  
Kei KOGA
Keyword(s):  
Foreign Policy ◽  
Southeast Asia ◽  
Prime Minister ◽  
Institutional Arrangement ◽  
Southeast Asian ◽  
Pacific Region ◽  
Policy Strategy ◽  
Future Challenges

While the Suga administration has managed Japan’s foreign policy towards ASEAN (Association of Southeast Asian Nations) relatively well on the basis of the “Free and Open Indo-Pacific” that former Prime Minister Abe had envisioned, the administration left a task for the next prime minister to creatively devise a foreign policy strategy to manage the three main challenges in the Indo-Pacific region concerning ASEAN Centrality, Indo-Pacific institutional arrangement and value-based diplomacy.

scholarly journals Assessing the influence of human settlements on the plant diversity in wetlands of Phobji and Gangtey, Bhutan

2020 ◽  
pp. 11-14
Author(s):  
Pema Lhamo ◽  
Ahmedul Kabir ◽  
Sayed Mohammad Nazim Uddin
Keyword(s):  
Plant Diversity ◽  
Diversity Index ◽  
Soil Analysis ◽  
Calcium Content ◽  
Human Settlement ◽  
Water Parameters ◽  
Close Proximity ◽  
Increasing Trend ◽  
Belt Transect ◽  
Physical And Chemical

Plant diversity in the wetlands of Phobji and Gangtey represents an important aspect of the overall wetland ecosystem. However, over the years, the increasing trend in population has initiated the building of many infrastructures and accommodations which lie at close proximity to the core wetland area. The plant diversity in human settled area and core undisturbed area was studied, with an objective to assess the influence of human settlement on the plant diversity. A belt transect method was used for the purpose of vegetation survey and Shannon Wiener diversity was calculated using the relative dominance. Plants were analyzed for their diversity, richness, dominance and invasive nature. Additionally, soil and water parameters were also tested to see the current situation of the pH and nutrient levels. A total of 136 species belonging to 39 families was identified in both the areas. The overall diversity index and species richness was found to be higher in the undisturbed areas. Soil analysis did not show much of a difference in physical and chemical parameters except for a slight difference in potassium content. Similarly, water parameters did not show much difference but only showed variation in calcium content. The findings of the study indicated towards the increasing influence of human settlement in the wetland.

scholarly journals Analisis Keanekaragaman Tumbuhan Invasif Di Kawasan Hutan Pantai Balekambang Desa Srigonco Kecamatan Bantur Kabupaten Malang

2020 ◽  
Vol 6 (1) ◽  
pp. 46-53
Author(s):  
Miftahul Mukarromah ◽  
Ari Hayati ◽  
Hasan Zayadi
Keyword(s):  
Invasive Plants ◽  
Invasive Plant ◽  
Cynodon Dactylon ◽  
Diversity Index ◽  
Abiotic Factors ◽  
Coastal Forest ◽  
Mimosa Pudica ◽  
Belt Transect ◽  
Index Value ◽  
Sida Rhombifolia

Balekambang Beach is the most visited beach destination in Malang Regency until the end of 2015. One of the invasive pathways of invasive plants is Tourism. The purpose of this study was to identify invasive plant species, diversity and compare the value of the diversity index with abiotic factors.This research method is descriptive with systematic sampling techniques using Belt Transect, and measurements of abiotic factors include edafic factors and climatic micro factors. Invasive alien plant species found in the Balekambang coastal forest are identified as seventeen species namely (Hemighraphis glaucescens), (Oplismenus sp), (Amomum coccineum), (Arenga obtusifolia), (Leucaena leucochephana), (Mimosa sp), (Cassia siamea), (Eupatorium odoratum), (Hyptis capitata), (Cynodon dactylon), (Sida rhombifolia), (Synedrella nudiflora), (Chromolaena odorata),  (Leucaena leucochepala), (Mimosa pudica), and (Ruellia tuberosa) with the index value of invasive plant diversity in protected forests and production classified as high compared to mangroves. The results of the diversity index value with abiotic factors showed a positive (+) direction on soil sailinity where the R2 value was 0.5606 or 50%, which means it showed a relationship between soil salinity and an abundance of invasive plants in Balekambang coastal forest area of 50%.  Keywords:invasive plants, Balekambang beach, belt transect, diversity ABSTRAK Pantai Balekambang adalah destinasi wisata alam pantai di Kabupaten Malang yang paling banyak dikunjungi hingga akhir tahun 2015.Salah satu jalur invasi dari tumbuhan invasif adalah Tourism (Wisata). Tujuan dari penelitian ini adalah mengidentifikasi jenis tumbuhan invasif, keanekaragaman dan membandingkan nilai indeks keanekaragaman dengan faktor abiotik. Metode penelitian ini deskriptif dengan tehnik pengambilan sampling secara sistematis menggunakan Belt Transect, dan pengukuran faktor abiotik meliputi faktor edafik dan faktor mikro klimatik. Jenis spesies tumbuhan asing invasif yang terdapat di hutan pantai Balekambang diidentifikasi sebanyak tujuh belas spesies yaitu Hemighraphis glaucescens, Oplismenus sp, Amomum coccineum, Arenga obtusifolia, Leucaena leucochephana, Mimosa sp, Cassia siamea, Eupatorium odoratum, Hyptis capitata, Cynodon dactylon, Sida rhombifolia, Synedrella nudiflora.Chromolaena odorata, Leucaena leucochepala, Mimosa pudica, dan Ruellia tuberose dengan nilai indeks keanekaragaman tumbuhan invasif pada hutan lindung dan produksi tergolong tinggi dibanding mangrove. Hasil analisis uji korelasi nilai indeks keanekaragaman dengan faktor abiotik menunjukkan arah positif (+) pada salinitas tanah dimana nilai R2 sebesar 0.5606 atau 50%, yang artinya menunjukkan hubungan antara salinitas tanah dengan kelimpahan tumbuhan invasif di kawasan hutan pantai Balekambang sebesar 50%. Kata kunci: tumbuhan invasif, pantai Balekambang, belt transect, keanekaragaman

scholarly journals Southeast Asia and the South Pacific Region: current problems of development – 2019

2020 ◽  
pp. 494-514
Author(s):  
E.M. Astafieva ◽  
◽  
N.P. Maletin ◽  
Keyword(s):  
Southeast Asia ◽  
Academic Research ◽  
South Pacific ◽  
Educational Institutions ◽  
Pacific Region ◽  
The South ◽  
Russian Academy Of Sciences ◽  
Oriental Studies ◽  
Academy Of Sciences

The paper provides an overview of the reports presented at the conference "Southeast Asia and the South Pacific region: current problems of development", which was held in the Institute of Oriental Studies of the Russian Academy of Sciences on December 18, 2019. In the annual inter-institute conference of Orientalists organized by the Center for Southeast Asia, Australia and Oceania studies academics, as well as applicants and post-graduates from various academic, research and educational institutions, participated.

Quantification of Bioerosion by Sphaerechinus Granularis on ‘Coralugène’ Concretions of the Western Mediterranean

1997 ◽  
Vol 77 (2) ◽  
pp. 565-568 ◽  
Author(s):  
Stephane Sartoretto ◽  
Patrice Francour
Keyword(s):  
Shallow Water ◽  
Small Diameter ◽  
Western Mediterranean ◽  
Biological Agent ◽  
High Abundance ◽  
Shallow Waters ◽  
Mean Diameter ◽  
The Mean ◽  
The Mediterranean

Sphaerechinus granularis (Echinodermata: Echinidea) is involved in the erosion of ‘coralligène’ concretions in the Mediterranean. In shallow water (10 m), a high abundance of this species (>20 ind 25 m−2) is associated with small diameter individuals (56·7 ±7·7 mm). In deep clean waters (>40 m), the abundance is lower (<1 ind 25 m−2) and the mean diameter is higher (86·0±9·3 mm). Daily erosion of Corallinaceae by this species is related to the urchin diameter (r=0.87). Local variations in urchin abundance and diameter influence the amount of CaCO3 eroded annually. In shallow waters, the eroded CaCO3 mass reaches 210 g m−2 y−1 vs 16 g m−2 y−1 in coralligène concretions in deep clean waters. Sphaerechinus granularis is an important biological agent which substantially erodes the Mediterranean coralligène concretions.

scholarly journals Chemical Diversity in Species Belonging to Soft Coral Genus Sacrophyton and Its Impact on Biological Activity: A Review

Marine Drugs ◽  
2020 ◽  
Vol 18 (1) ◽  
pp. 41 ◽  
Author(s):  
Yasmin A. Elkhawas ◽  
Ahmed M. Elissawy ◽  
Mohamed S. Elnaggar ◽  
Nada M. Mostafa ◽  
Eman Al-Sayed ◽  
...  
Keyword(s):  
Secondary Metabolites ◽  
Coral Species ◽  
Soft Coral ◽  
Biological Activities ◽  
Chemical Diversity ◽  
The Arctic ◽  
Shallow Waters ◽  
Pacific Region ◽  
Pharmacological Activities ◽  
Coral Genus

One of the most widely distributed soft coral species, found especially in shallow waters of the Indo-Pacific region, Red Sea, Mediterranean Sea, and also the Arctic, is genus Sacrophyton. The total number of species belonging to it was estimated to be 40. Sarcophyton species are considered to be a reservoir of bioactive natural metabolites. Secondary metabolites isolated from members belonging to this genus show great chemical diversity. They are rich in terpenoids, in particular, cembranoids diterpenes, tetratepenoids, triterpenoids, and ceramide, in addition to steroids, sesquiterpenes, and fatty acids. They showed a broad range of potent biological activities, such as antitumor, neuroprotective, antimicrobial, antiviral, antidiabetic, antifouling, and anti-inflammatory activity. This review presents all isolated secondary metabolites from species of genera Sacrophyton, as well as their reported biological activities covering a period of about two decades (1998–2019). It deals with 481 metabolites, including 323 diterpenes, 39 biscembranoids, 11 sesquiterpenes, 53 polyoxygenated sterols, and 55 miscellaneous and their pharmacological activities.

scholarly journals Evolutionary trends in onshore-offshore distribution patterns of mushroom coral species (Scleractinia: Fungiidae)

2012 ◽  
Vol 81 (4) ◽  
pp. 199-221 ◽  
Author(s):  
Bert W. Hoeksema
Keyword(s):  
Related Species ◽  
Coral Species ◽  
Environmental Gradients ◽  
Distribution Patterns ◽  
Similar Distribution ◽  
Closely Related Species ◽  
Species Association ◽  
Incidence Data ◽  
Coral Fauna ◽  
Mushroom Coral

A phylogenetically based comparative analysis of onshore-offshore distribution patterns of mushroom coral species (Scleractinia: Fungiidae) was made to reconstruct an evolutionary scenario for differentiation in fungiid shelf habitats. This phyloecological study integrates data on fungiid distribution patterns along environmental gradients on the Spermonde Shelf, SW Sulawesi, with a recently published phylogeny reconstruction of the Fungiidae. A mushroom coral fauna of 34 species was used to compare their distributions by use of 50-m2 belt quadrats in transects (1) from the mainland to the shelf edge, (2) around reefs with regard to predominant wind directions, and (3) over bathymetrical reef zones. Species association ordinations were made for each of the four shelf zones using both abundance and incidence data to examine whether closely related species cooccurred. Some closely related species or even sister species appeared to show very similar distribution patterns and to coexist in high abundances. These results indicate that there may not be community saturation and competitive exclusion among mushroom corals species, most of which are free-living. In reconstructions of fungiid habitat evolution, offshore reef slopes appear to be original (ancestral), whereas onshore habitats, shallow reef flats, and deep sandy reef bases seem to be derived. The latter is in contrast with an earlier hypothesis, in which deep sandy substrates were considered ancestral mushroom coral habitats.

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