The Socio-Ecological System (SES) perspective is widely used to identify and explain the relationship between seagrass ecosystem and their dependent community. These relationships can be recognized when humans utilize the seagrass ecosystem that benefits as a dependent community. Further, these utilization patterns can be used as a basis for managing the seagrass ecosystems themselves. This study was conducted to identify and map the relationship between seagrass ecosystem and their communities in Wangi-wangi Island, Kaledupa Island and Tomia Island. The data were collected in June–July 2019 through observation, focused group discussions and interviews with 59 respondents. The relationship between the seagrass ecosystem and its community was analyzed descriptively. The results show that the SES built a simple pattern. Seagrass ecosystems were used as the main source of daily food for island people. Seagrass products were traded limited inside the island. Resource users, infrastructure providers, as well as public infrastructure formed a short-chain. It is important to preserve the condition of seagrass ecosystems by ensuring existing legal rules and local wisdom to enhance the SES.
<strong>The Utilization of Sea Cucumber in Kaimana Regency, West Papua Province.</strong>Sea cucumbers are one of marine commodities that are traded at local, national and international scale. Kaimana Regency, West Papua Province is one of the sea cucumber producers in Indonesia. The exploitation of sea cucumber in this regency has been carried out for long times, applying the<em>sasi</em>system. The purpose of this study is to determine the exploitation of sea cucumbers with the <em>sasi</em> system. Data were collected in April 2018 in two location, namely Kayumerah Island and Kambala Village. Focus Group Discussion (FGD) was perfomed out using structured questions to gather information of the sea cucumber exploitation. The snowball technique was used to locate the sea cucumber collectors. This study results showed 22 commercial species of sea cucumber were found in Kayumerah Island and 33 species in Kambala Village. Duration of open-closed sasi in Kayumerah Island was 2 to 3 years for 14 days, while in Kambala Village was 2 years for 6 months. The average catched of sea cucumbers was 3.57 kg dry weight/person/ day in Kayumerah Island and 0.09 kg dry weight/person/day in Kambala Village. These commodities were sold to the city nearby. Sasi system at the study site seems to have changed due to an auction system or fee for collecting of sea cucumbers and a changes in capture methods, through diving supported by compressor
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