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Study of Composition and Composition of Macro Algae Habitat in the Intertidal Zone Water of Sibu Island, Nort Oba District Tidore Islands City Nort Maluku Sukmawati Djalil; Riyadi Subur; Rina Rina; Sunarti Sunarti; Yuyun Abubakar; Aryati A. Fadel; Adi Noman Susanto; Sarni Sarni
Jurnal Biologi Tropis Vol. 21 No. 2 (2021): Mei - Agustus
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v21i2.2582

Macro algae is a part of marine plants whose whole body is called the "thallus". Macro algae are widespread in tropical and sub-tropical waters. The purpose of this study was to determine the composition of the macro algae species, the width of the micro-habitat niches, and the overlapping of the micro-habitat niches in the intertidal zone of the waters of Sibu Island, Oba Utara District, Tidore Islands City. The data was collected using survey method using belt transects and squares measuring 1x1 m2 which are placed systematically in zigzags along the tansek belt. In this study, 20 species of macro algae were found in the waters of the island of Sibu, consisting of Halimeda macroloba, Halimeada opuntia forma chordata, Halimeda incrassata, Halimeda opuntia forma renschii, Chaetamorpha sp, Eucheuma cottonii, Sargassum duplicatum, S.polycestum, Turbina ornata, T. conoides, Padina boergesenii, Dictyota dichotoma, Amphiroa fragilissima, Acanthopora spicifera, Eucheuma denticulatum, E. spinosum, Glacilaria salicornia, Hypnea nidulans, Galaxaura apiculata. The results of the analysis of the width of the recesses showed that the macro algae species with the largest recess width were Eucheuma denticulatum with a value of 0.905, while Galaxura apiculata had the narrowest recess widths with a value of 0.200. Furthermore, based on the results of overlapping analysis of microhabitat niches, it shows that the overlap of microbaitate niches is quite large by Sargassum polycestum against Galaxaura apiculata with a value of 0.337, while the lowest was carried out by Halimeda macroloba against Galaxaura apiculata, Halimeda opuntia forma chordata against Galaxaura apiculata with a value of 0.337, while the lowest was carried out by Halimeda macroloba against Galaxaura apiculata, Halimeda opuntia forma chordata against Galaxaura apiculata, Eucheuma spinosum against Galaxaura apiculata with a value of 0.000.

Growth and Success Rate of Mangrove Rehabilitation Activities in Moti Island, Moti District, Ternate City Salim Abubakar; Rina Rina; Masykhur Abdul Kadir; Riyadi Subur; Sunarti Sunarti; Yuyun Abubakar; Adi Noman Susanto; Reni Tyas Asrining Pertiwi; Aditiyawan Ahmad; Iwan Hi. Kader
JURNAL AGRIKAN (Agribisnis Perikanan) Vol 14 No 2 (2021): Agrikan: Jurnal Agribisnis Perikanan
Publisher : Fakultas Pertanian, Universitas Muhammadiyah Maluku Utara

This research was carried out on Moti Island, Moti District, Ternate City, North Maluku Province for 6 months, April - September 2021. This study used mixed research methods between quantitative and qualitative research with the aim of complementing the description of the study results regarding the phenomenon being studied and to strengthen research analysis. Data collection consisted of interviews, questionnaires and field observations. The assessment of plant success was carried out through a sampling technique using the Systematic Sampling with Random Start method, ie the first plots were made randomly and the next plots were made systematically. The results showed that the plant height growth (Growth rate) in Tafaga Village in an area of 100 x 100 meters with an average of 31 cm. While the area is 100 x 50 meters with an average of 49 cm. Meanwhile, in Figur Village, the general population experienced good growth with an average of 63 cm. The success of rehabilitation activities in Tafaga Village was very low at 9% and 21% so that they were not successful overall. While in Figur Village it is considered successful with 80% success.

Gastropod Communities in Seagrass Ecosystems in Tafaga Coastal Waters and Figures, Moti Island District, Ternate City Sunarti Sunarti; Yuyun Abubakar; Salim Abubakar; Riyadi Subur; Rina Rina; Masykhur Abdul Kadir; Adi Noman Susanto; Ariyati H. Fadel
JURNAL AGRIKAN (Agribisnis Perikanan) Vol 14 No 2 (2021): Agrikan: Jurnal Agribisnis Perikanan
Publisher : Fakultas Pertanian, Universitas Muhammadiyah Maluku Utara

This study was conducted with the aim of knowing the composition of gastropod species that live in the seagrass area of Tafaga and Figur coastal waters, Moti Island and to determine the structure of the gastropod community which includes density, diversity, dominance and species evenness. The sampling technique was carried out using the 50x50 m block area method. The composition of gastropod species found in coastal waters of Tafaga (station 1) was 6 species and coastal waters of Figure (station 2) were 17 species. The highest density of gastropod species in station 1 was found in the Nassarius pullus species and the lowest in the Naria erosa species. Meanwhile, in the station 2, the highest density of gastropod species was also found in the Nassarius pullus species and the lowest in the Strombus lentiginosus species. The diversity of gastropod species at station 1 is low and there are species that dominate and the distribution of species is quite even. While at station 2 the species diversity is moderate and no species dominates and the species distribution is evenly distributed.

Potential and Interaction Patterns of Utilization of Seagrass Fishery Resources in Tuduku Island, South Jailolo District, West Halmahera Regency Rina Rina; Darmawaty Darmawaty; Salim Abubakar; Masykhur Abdul Kadir; Riyadi Subur; Sunarti Sunarti; Yuyun Abubakar; Adi Noman Susanto
JURNAL AGRIKAN (Agribisnis Perikanan) Vol 15 No 1 (2022): Agrikan: Jurnal Agribisnis Perikanan
Publisher : Fakultas Pertanian, Universitas Muhammadiyah Maluku Utara

. Seagrass ecosystem is one of the coastal ecosystems that can provide food supply and improve the living standards of coastal residents. The objectives of the study were to determine the composition of the seagrass species on Toduku Island, to determine the composition of the seagrass biota species, to determine the community structure of seagrass species and associated biota including species diversity, species dominance and species density and to determine the interaction pattern of the utilization of seagrass fisheries resources by the community around Toduku Island. . The method used is field observation and Participatory Rural Appraisal (PRA). The composition of seagrass species in Toduku Island are Enhalus acoroides, Thalassia hemprichii, Halophila minor, Cymodocea rotundata, Halodule pinifolio, and Syringodium isoetifolium. The composition of the biota that inhabits the seagrass beds of Toduku Island consists of fish, crabs and macrozoobenthos (Holothuroidea, Echinoidea, Asteroidea, gastropods, bivalves). The diversity of seagrass and biota species is moderate, there is no dominant species and the distribution of each species is very even. The pattern of interaction in the use of seagrass resources has been patterned for generations. The forms of utilization activities carried out by the community include taking mollusks (snails, clams), echinodes (sea cucumbers, sea urchins), catching fish and crabs.

Mangrove Health Based on Fauna Biodiversity in Bobo Village, Jailolo District, West Halmahera Regency Salim Abubakar; Rina Rina; Riyadi Subur; Adi Noman Susanto; Faisal Rivai Kodung
JURNAL AGRIKAN (Agribisnis Perikanan) Vol 15 No 1 (2022): Agrikan: Jurnal Agribisnis Perikanan
Publisher : Fakultas Pertanian, Universitas Muhammadiyah Maluku Utara

The health of the mangrove forest ecosystem is related to vegetation cover and faunal biodiversity is one of the indicators in the assessment of mangrove health. The research aims to determine the composition of mangrove species and mangrove forest fauna, determine the condition of mangrove forests based on the density of mangrove species, determine animal community structures which include biodiversity and dominance and determine the health level of mangroves in Bobo Village, Jailolo District. The sampling method of mangrove species was using the line transect method, while the health condition of the mangroves was a modification of FHM (Forest Health Monitoring). Fauna biodiversity data collection using the cluster method. The composition of mangrove species in Bobo Village is 6 species (Rhizophora apiculata, R. stylosa, Bruguiera gymnorrhiza, Ceriops tagal, Sonneratia alba, Xylocarpus granatum). The composition of fauna species consists of 25 species consisting of Epifauna (Gastropods = 17 species, Bivalve = 1 species, Crustaceans = 1 species) and birds (6 species). The condition of mangrove vegetation is classified as good with very dense density. The diversity of fauna in the medium category and no species is dominant. The health status of the mangrove forest in Bobo Village has 33% good, 25% moderate and 42% poor conditions.

Status of Conditions and Identification of Damage to Seagrass Beds in the Waters of South Kayoa District, South Halmahera Regency M Said Alhaddad; Adi Noman Susanto; Fajria Dewi Salim
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): July - September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i3.4087

The study of condition status and identification of problems of seagrass damage in the waters of South Kayoa District, South Halmahera Regency aims to determine the status of seagrass ecosystem conditions and identify problems of seagrass ecosystem damage in the waters of South Kayoa District, South Halmahera Regency. Based on the research results on the status of the level of damage to the seagrass ecosystem in the waters of the South Kayoa District, South Halmahera Regency, about the Decree of the Minister of State for the Environment no. 200 of 2004. The station I (Pasir Putih) has an area of 61.23 significant damage. Station II (Ngute-Ngute) damage area 49.69 moderate damage. Station III (Posi-Posi) has an area of 39 moderate damage. Station IV (Sagaole) Damage area 46.90 moderate damage. Station V (Pass), with an area of 60.28, is under significant damage. While the factors causing the seagrass damage were identified due to natural factors in the form of waves and human factors in the form of ship/boat mooring, ship/boat anchorage, breakwater construction, resident settlements, dock construction, Doro (road opening in the seagrass area), construction of public roads, fishing fish and non-fish and seaweed cultivation.

Composition and Condition of Mangrove Forest in Tarnana Island Subdistrict South Jailolo, North Maluku Province Adi Noman Susanto; Mesrawaty Sabar; Salim Abubakar; Sunarti Sunarti; Yuyun Abubakar
Agrikan: Jurnal Agribisnis Perikanan Vol 14, No 1 (2021)
Publisher : Sangia Research Media and Publishing LLC

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29239/j.agrikan.14.1.99-107

The mangrove ecosystem is one of the main ecosystems in the coastal area which is very productive, but is very vulnerable to changes or external influences. As a vulnerable ecosystem, mangrove ecosystem management has to concern the integration of the community's ecological, economic and socio-cultural aspects so that optimal and sustainable management is achieved. The research objectives were to know the composition of mangrove species, to determine the structure of the mangrove forest community (species diversity, species dominance, uniformity, species density, species cover) and to determine the condition of mangrove forests on Tarnana Island, Jailolo Selatan District. This research was conducted on Tarnana Island, Jailolo Selatan District, and West Halmahera Regency in January - February 2021. The sampling method was carried out using the spot check method. Sampling was carried out at the lowest tide by using 5 line transects and each line transect placed 5 plots. Data analysis included species diversity, species dominance, uniformity, species density and species cover. The composition of mangrove species on Tarnana Island was obtained as many as 8 species, namely Rhizophora apiculata, R. stylosa, Bruguirea gymnorrhiza, Ceriops decandra, Ceriops tagal, Sonneratia alba, Xylocarpus granatum and Avicennia alba. The structure of the mangrove community has moderate species diversity, no dominant species and moderate uniformity. The condition of the mangrove forest on Tarnana Island is in the damaged category with rare density.

Composition and Condition of Mangrove Forest in Tarnana Island Subdistrict South Jailolo, North Maluku Province Adi Noman Susanto; Salim Abubakar; Mesrawaty Sabar; Sunarti Sunarti; Yuyun Abubakar
JURNAL AGRIKAN (Agribisnis Perikanan) Vol 14 No 1 (2021): Agrikan: Jurnal Agribisnis Perikanan
Publisher : Fakultas Pertanian, Universitas Muhammadiyah Maluku Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar

The research objectives were to know the composition of mangrove species, to determine the structure of the mangrove forest community (species diversity, species dominance, uniformity, species density, species cover) and to determine the condition of mangrove forests on Tarnana Island, Jailolo Selatan District. This research was conducted on Tarnana Island, Jailolo Selatan District, and West Halmahera Regency in January - February 2021. The sampling method was carried out using the spot check method. Sampling was carried out at the lowest tide by using 5 line transects and each line transect placed 5 plots. Data analysis included species diversity, species dominance, uniformity, species density and species cover. The composition of mangrove species on Tarnana Island was obtained as many as 8 species, namely Rhizophora apiculata, R. stylosa, Bruguirea gymnorrhiza, Ceriops decandra, Ceriops tagal, Sonneratia alba, Xylocarpus granatum and Avicennia alba. The structure of the mangrove community has moderate species diversity, no dominant species and moderate uniformity. The condition of the mangrove forest on Tarnana Island is in the damaged category with rare density.

Gastropod Microhabitat Associations and Niches in Seagrass Ecosystems on Donrotu Island, South Jailolo District, West Halmahera Regency Sunarti; Yuyun Abubakar; Riyadi Subur; Salim Abubakar; Rina; Adi Noman Susanto; Ariyati H. Fadel
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): January - March
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i1.4642

Gastropods are included in the mollusk phylum which is known to be well-associated with seagrass ecosystems. The gastropod community is an important component in the food chain in seagrass beds and ecologically seagrass beds have an important role in the ecosystem. Seagrass ecosystems are habitats and food sources for fish and other aquatic biota. One of the biota commonly found in seagrass beds is Gastropods. This study was conducted to know the composition of gastropod species, types of gastropod associations, and gastropod microhabitat niches in seagrass ecosystems on Donrotu Island. Gastropod sampling was carried out at low tide. The gastropod samples found were then put into a plastic bag that already contained a label. Furthermore, the gastropod samples were brought ashore to count the number of individuals of each type and determined based on morphological characteristics such as shell shape, shell color, shell mouth opening, and spiral circle based on Dharma (1992) instructions. Based on the results of the study, the composition of the types of gastropods found in the seagrass ecosystem on the island of Donrotu was as many as 13 species. There were 13 pairs of gastropod types that had positive associations and 65 pairs of no associations. The type of gastropod that has the widest habitat niche is Cypraea tigris and the narrowest are Naticarius coillei and Pseudovertagus aluco.

Economic Valuation of Mangrove Forest Ecosystem in Waidoba Island, South Kayoa District, South Halmahera Regency M. Said Al Hadad; Ariyanti H. Fadel; Adi Noman Susanto; Salim Abubakar; Ardan Samman; Riyadi Subur
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i2.5756

Mangrove Forest ecosystems have distinctive characteristics and forms and have functions and benefits as development resources both as economic resources and ecological resources that have long been felt by the Indonesian people, especially for the people who live around that area. This research aims to identify the types of utilization of mangrove forest ecosystems and to analyze the total economic value of mangrove forest ecosystems in the area of Waidoba Island, South Kayoa District, South Halmahera Regency. The sampling method in this study used a purposive sampling method. Based on the results identification of the benefits and functions of the mangrove forest ecosystem in Waidoba Island area, Kayoa Selatan District, that there were (4) four types of mangrove forest ecosystem benefits, namely (1) direct benefits (2) indirect benefits, (3) optional benefits and (4) benefits of existence. While the results of costs and benefits of the total economic value of mangrove forest ecosystem in Waidoba Island area of South Kayoa District were obtained Rp. Rp.170.520.720.104/year or Rp.418.014.659,-/ha/year. This total economic value was the benefit value of mangrove forest ecosystem that utilized by the community covering an area of 407.93 Ha.

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