Ekosistem hutan mangrove merupakan habitat penting bagi organisme kelautan dan sebagai penjaga pantai dari abrasi. Salah satu daerah yang mempunyai hutan mangrove dan cukup rentan dengan terjadinya abrasi adalah Desa Socah di Kabupaten Bangkalan. Kegiatan ini bertujuan untuk meningkatkan kesadaran masayarakat tentang pentingnya mangrove dalam mencegah terjadi abrasi, khusunya di Desa Socah. Kegiatan ini melibatkan pemuda karang ateruna dan warga Desa. Secara umum, kegiatan ini berjalan dengan lancar dan diikuti dengan antusias yang cukup tinggi oleh seluruh peserta. Diharapkan dengan adanya kegiatan ini, masyarakat Socah dapat memahami dan mengambil manfaat besar yang dimiliki oleh mangrove serta mencegah Desa Socah dari abrasi.
Perairan Probolinggo merupakan salah satu lokasi agregasi musiman hiu paus (Rhincodon typus) di Indonesia sejak beberapa tahun terakhir. Hiu paus di perairan Probolinggo banyak dijumpai pada bulan Desember sampai Maret, meskipun kemunculan dapat terjadi sepanjang tahun di sekitar pantai utara Pulau Jawa. Hiu paus telah dimasukkan sebagai salah satu spesies yang mendapatkan perlindungan penuh oleh dunia. Penelitian ini bertujuan untuk membangun model pendugaan daerah kemunculan hiu paus di perairan pantai Probolinggo. Data kemunculan hiu paus bulan Januari sampai Maret 2016 diperoleh dari lembaga hiu paus Indonesia. Parameter oseanografi yang digunakan yaitu sea surface temperature (SST), dan konsentrasi klorofil-a (chl-a) diperoleh dari data penginderaan jauh, sedangkan kedalaman perairan berasal dari GEBCO (The General Bathymetryc Chart of the Oceans). Maximum entropy model digunakan untuk memprediksi habitat yang sesuai terhadap distribusi hiu paus dengan didasarkan pada parameter yang berpengaruh terhadap kemunculan hiu paus di perairan Probolinggo. Nilai area under curve (AUC) sebesar 0,997 menunjukkan bahwa model dapat memprediksi kesesuaian habitat hiu paus dengan sangat baik. Dari ketiga parameter yang diuji, kedalaman (71,0%) menunjukkan sebagai parameter yang paling berpengaruh terhadap kemunculan hiu paus di perairan Probolinggo, disusul oleh chl-a (15,7%) dan SST (13,3%). Hasil juga menunjukkan hiu paus banyak ditemukan pada kedalaman 9 – 14 meter dan chl-a 0,5 – 0,7 mg/m3 serta SST 29 – 30°C. Distribusi hiu paus yang diperoleh memberi peluang untuk mengidentifikasi spesifik area dengan tingkat akurasi kehadiran yang tinggi di sepanjang pantai Probolinggo; pengenalan spesifik area ini dapat dijadikan dugaan untuk membangun manajemen praktis yang efektif untuk meningkatkan perlindungan hiu paus. Probolinggo water is one of suitable sites of the whale sharks (Rhincodon typus) seasonal aggregation in Indonesia during the last years. Whale sharks in Probolinggo waters are common appear in December to March, although they can be seen years-around in the North Coast of Java Island. Whale sharks have been included as one of the full protected species of the world. This study aims to develop a model prediction of the whale sharks occurrence in Probolinggo coastal waters. The occurrence data of whale sharks from January to March 2016 was obtained from the whale sharks institute of Indonesia. The oceanographic parameters were used sea surface temperature (SST), and chlorophyll-a concentration (chl-a), obtained from remotely sensed data, while water depth derived from GEBCO (The General Bathymetryc Chart of the Oceans). Maximum entropy models are used to predict suitable habitats for the distribution of whale sharks based on the influential parameters on the appearance of whale sharks in Probolinggo waters. The value of the under-curve area (AUC) of 0.997 indicates that the model can predict the suitability of whale sharks habitat excellent. Of the three parameters tested, depth (71,0%) showed as the most parameters influenced the occurrence of whale sharks in this waters, followed by chl-a (15,7%) and SST (13,3%). Furthermore, the results showed that whale sharks were mostly found at depths of 9 – 14 meters, chl-a of 0,5–0,7 mg/m3and SST of 29 – 30°C. The distribution of whale sharks obtained provides an opportunity to identify the specific areas with high attendance accuracy along Probolinggo waters; the recognition of the specific area can be used as starting points to develop effective management practices to improvewhale sharks protection.
Demersal fish is one of the commodities that has high economic value that life in the high seas. The Arafura sea id well known as the golden fishing ground because it has a great number of natural sources. This study aims to know the spatial and temporal distribution of oceanographic pharameters (temperature, chlorophyll-a and salinity) in Arafura Sea. The use Oceanographic parameters was temperature and chlorophyll-a obtained from ocean color while the salinity data were obtained from CMEMS and positional data of demersal fishing vessels that were obtained from PPP (Coastal Fisheries Port) Probolinggo in January-march, october-december (west season) and april-september (east season) during 2016-2017. This research uses descriptive analysis method and multiple linear regression analysis using T and Test F.The result shows that most of demersal fish were caught in the eastern season in 2016-2017. Demersal fish are mostly found at sea with surface temperature (SPL) 27-30 0 C, Chlorophyll-a 0.99-0.15 mg/m 3 and salinity 32-34 ppt. the oceanography parameters affect the distribution of demersal fish simultaneously, this is seen from the values of SIG F and sig T which are worth or less than 0.05.
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