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All Journal Jurnal Biologi Tropis
Ariyanti H. Fadel
Universitas Khairun
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology

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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

Abstract

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.
Size Distribution and Habitat Characteristics of Coconut Crabs (Birgus latro) in Tomajiko, Hiri Island District, Ternate City, Province North Maluku Rugaya H. Serosero; Yuyun Abubakar; Riyadi Subur; Mesrawati Sabar; Saman; Ariyanti H. Fadel; Rina; Sri Endah Widiyanti; Salim Abubakar
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.v23i2.6257

Abstract

Coconut crabs (Birgus latro) is a fishery resource that is only found in eastern Indonesia, and the waters of Ternate City are an area that has this potential.  This research aims to determine the size distribution and habitat characteristics of coconut crabs in Tomajiko, Hiri Island District. The data collection method consists of several stages, namely determining stations, distributing bait, catching coconut crabs, morphometric measurements, and observing environmental parameters. Determination of stations in this study was carried out based on topographic differences in Tomajiko (divided into two stations). Coconut crab catching uses the roaming survey method. The bait used is coconut meat that has been split into several parts and coconut meat that has been mashed. The morphometric dimensions measured were chest length (carapace length) and body weight. The habitat characteristics observed were the type and extent of vegetation, organic matter content and substrate texture, environmental parameter measurements (soil temperature, air humidity and soil pH). The results of the research showed that the coconut crabs caught at both stations had relatively the same length, but the largest weight was found at station 2. Habitat characteristics in Tomajiko, Hiri Island strongly support the survival of coconut crabs.
Co-Authors Abubakar, Salim Adi Noman Susanto Ardan Samman M. Said Al Hadad Mesrawati Sabar Rina Riyadi Subur, Riyadi Rugaya H. Serosero Saman Sri Endah Widiyanti Yuyun Abubakar