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INDONESIA
JURNAL ILMIAH PLATAX
Published by Universitas Sam Ratulangi
ISSN : 23023589     EISSN : -     DOI : -
Core Subject : Social,
Environmental Science
Mencakup Penulisan yang berhubungan dengan pelaksanaan penelitian yang dilakukan secara mandiri, atau kelompok, dan berdasarkan Ruang Lingkup Pengelolaan Wilayah Pesisir, Konservasi, Ekowisata, dan Keanekaragaman Hayati Perairan.
Arjuna Subject : -
Articles 7 Documents
 1 
Search results for , issue "Vol. 1 No. 4 (2013): Edisi September - Desember 2013" : 7 Documents clear
Diversity of Mushroom Coral (Fungidae) in Siladen Waters, North Minahasa Bambang Hermanto
Jurnal Ilmiah PLATAX Vol. 1 No. 4 (2013): Edisi September - Desember 2013
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.1.4.2013.3677

Abstract

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
Conditions of Substrate and Water Quality Supporting Activites as A Growth Factor in Mangrove at Coastal Basaan I, South East District Minahasa Adnan S. Wantasen
Jurnal Ilmiah PLATAX Vol. 1 No. 4 (2013): Edisi September - Desember 2013
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.1.4.2013.3704

Abstract

Mangrove forest vegetation contained in Basaan The village has an important role, both ecologically and economically for the community. The mangrove ecosystem's ability to maintain its ecological function depends on factors - environmental contributing factors, namely the quality of the environment and substrate conditions. The purpose of the study was to measure the quality of environmental factors and substrate waters around mangrove and describe the environmental capacity of water at mangrove ecosystem. The method of research by sampling at two locations: station A and station B by taking water samples in which the chemical and physical parameters of the test carried out in the Laboratory of Water archipelago and substrate samples which were tested in Laborarotium Soil Fertility, Faculty of Agriculture Unsrat Manado. The test results showed that the water temperature is 310C and TSS levels <1 (station A) and 44 (station B), pH 7.3; salinity 32; NH3 0.26 (A), 0.05 (B); PO4 0.122 (A ), 0.013 (B); H2S < 0.02; DO 10.10 (A), 8.95 (B). For the test results is the basic substrate pH H2O 7.6 (station A) and 7.5 (station B) neutral category; pH KCl 5.1 (A) and 5.4 (B) neutral category, N 0.44 (A ), 0.34 (B) medium category; P2O5 1.98 (A) and 15.35 (B) medium category; organic C-5.83 (A) and 3.98 (B) high category; K2O 2, 27 (A) and 23.48 (B) medium category. Conditions coastal waters village Basaan I still quite good because of the support and the dukungya still need attention orthoposphat parameter whose value is higher than the standard.   Keywords : water quality, substrate base, carrying capacity
Level of Phosphate, Nitrate and Dissolved Oxygen in Talise Island Waters, North Sulawesi Simon I Patty
Jurnal Ilmiah PLATAX Vol. 1 No. 4 (2013): Edisi September - Desember 2013
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.1.4.2013.3678

Abstract

Phosphate and nitrate are a source of food for micro-organisms, while dissolved oxygen is required in the process of respiration in variety of aquatic organisms. Observations of phosphate, nitrate and dissolved oxygen levels have been conducted in the waters of Talise Island, North Sulawesi. Phosphate and nitrate concentration measurements carried out using spectrophotometric method, while dissolved oxygen was determined by electrochemical methods. Overall observations of phosphate, nitrate and dissolved oxygen levels in Talise Island waters, ranging between 0.005 to 0.056 mg/l, 0.012 to 0.034 mg/l and 5.05 to 6.01 ppm, respectively. Levels of phosphate, nitrate and dissolved oxygen in Talise Island Waters were still considered normal and suitable for marine life.Keywords : Phosphate, nitrate, dissolved oxygen,Talise Island, North Sulawesi
Coral Fishes the Famili Chaetodontidae in Coral Reef Waters of Para Island Sub District Tatoareng, Sangihe Kepulauan Regency Ari B. Rondonuwu; Unstain N.W.J. Rembet; Ruddy Dj. Moningkey; John L. Tombokan; Alex D. Kambey; Adnan S. Wantasen
Jurnal Ilmiah PLATAX Vol. 1 No. 4 (2013): Edisi September - Desember 2013
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.1.4.2013.3705

Abstract

This study aims to determine the distribution and abundance of reef fish families chaetodontidae in coral reef waters of Para Island Sub District Tatoareng. This study was conducted at 4 stations. Data collected was done using visual census on the 50-meter transect line at 5 meters depth. In addition to revealing the number of species and abundance of individuals chaetodontidae, data analysis aimed to determine number of species, individual abundance, and the community index. Based on the identification, obtained 27 species from 3 genera and 217 number of individuals.  The highest number of species found at station Para 1.  7 species are always found in all observation stations, Chaetodon kleinii, C. punctatofasciatus, C. lunulatus, C. trifascialis, C. vagabundus, Heniochus varius, H. chrysostomus. The species with the largest number of individuals that is Chaetodon kleinii (45 individuals). Chaetodontidae fish species diversity index ranged between 2.207-2.866. Dominance Index are categorized low in the range of 0.078-0.122.  Similarity index are categorized high in the range of 0.922-0.971. Keywords : coral fishes, chaetodontidae, coral reef, Para Island
The Growth of Hard Coral (Acropora sp.) Transplants in Coral Reef of Malalayang Waters, North Sulawesi, Indonesia Alex D. Kambey
Jurnal Ilmiah PLATAX Vol. 1 No. 4 (2013): Edisi September - Desember 2013
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.1.4.2013.3703

Abstract

Main coral reef building components, Scleractinian corals, has the highest distribution in Indonesia, at least 590 species known of 793 species in the world. Studies on damaged coral community transplantation have been done to observe their growth and adaptation ability. A four-month observation found that average length increment at 9 M deep was linearly 0.375 cm, 0.632 cm, and 0.732 cm at the first, second, and third month, respectively, at 6 M deep, it was 0.455 cm, 0.689 cm, and 1.012 cm, at the first, second and third month, respectively, and at  3 M deep, it was 0.55 cm, 1.05 cm and 1.1, at the first, second, and thrid month, respectively. Mean relative length increment at 9 M deep occurred every month as much as 4.25%, 8.23%, and 9.86% at the first, second, and third month, respectively. Similarly, it occurred in 6 M deep, 4.12%, 9.14%, and 11.28% at the first, second, and third month, respectively. However, at 3 M deep, it occurred only at the first and second month, 7.33% and 12.73%, while it declined at the third month, 11.7%. Keywords : Ecosystems, Coral Reef, Scleractinia, Malalayang, Manado
Community Structure of Seagrass Meadows In Mantehage Island Waters, North Sulawesi Simon I Patty; Husen Rifai
Jurnal Ilmiah PLATAX Vol. 1 No. 4 (2013): Edisi September - Desember 2013
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.1.4.2013.3699

Abstract

Research on the structure of seagrass communities in the waters of the island Mantehage was conducted in September 2010. The purpose of this study is to collect data and information on the structure of seagrass communities. Observations includes the identification seagrass species, measuring the number of individual/stand, cover percentage of each type/species on the transect. 6 types of seagrass found, i.e. Enhalus acoroides, Halophila ovalis, Thalassia hemprichii, Thalassodendron ciliatum, Cymodocea rotundata and Syringodium isoetifolium. Seagrass species composition and distribution varies at each location and is dominated by the presence of Thalassia hemprichii (48.14%) with coverage percentage ranges between 15.91% to 35.11%. Diversity index values ranged from 0.79 to 1.69 ; evenness index between 0.57 to 0.94 and the index of dominance between 0.20 to 0.56. In conclusion, the condition of seagrass meadows in Mantehage island is relatively good and can support marine life adequately.Keywords : Structure communities, seagrass, Mantehage Island
Community Structure of Cucumber (Holothuroidea) in Kakara Island Village Beach Subdistrict Tobelo Herni Gasango; Gaspar D Manu; Jan FWS Tamanampo
Jurnal Ilmiah PLATAX Vol. 1 No. 4 (2013): Edisi September - Desember 2013
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.1.4.2013.3701

Abstract

Sea cucumbers are marine resources that have economically important value and one potential sufficient resources to serve nutritious meals so that the exploitation of this resource will continue to increase for food need. This can lead to changes in community structure. Sampling was done at night while the lowest ebb on August 20, 2013. The objective of this research work was to identity the species, the species to determine composition, and the population density and to know the species dominance, species diversity, and determine the form of interspecific association. Based on the results of research conducted in the District Tobelo Beach Island District Kakara Tobelo sea cucumber species found were 8 species, Holothuria atra, Actinopygia lecanora, Stichopus horrens, Bohadschia argus, Holothuria hilla, Actinopygia achinites, Holothuria pardalis, and Bohadschia marmorata. The diversity index H '= 1.9463, equity index or harmony e = 0.9359, and dominance index C = 0.1592. In addition, among 8 species associations if formed 9 pairs of positive associations and 19 pairs of negative associations.   Keywords : Structure communities, Holothuroidea, Tobelo

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