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Max Rudolf Muskananfola
Universitas Diponegoro
Agriculture, Biological Sciences & Forestry

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Analisis Kesuburan Perairan Berdasarkan Klorofil-a, Nitrat dan Ortofosfat di Pantai Pasir Putih Wates, Kaliori, Rembang Clarisa Ika Oktaviana; Max Rudolf Muskananfola; Pujiono Wahyu Purnomo
Life Science Vol 12 No 1 (2023): May 2023
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/lifesci.v12i1.63819

Abstract

Pantai Wates merupakan salah satu pantai pasir putih yang menjadi tujuan destinasi wisata di Kabupaten Rembang. Tingginya aktivitas manusia di sekitar pantai seperti kegiatan wisata, pemukiman penduduk, pertambakan dan kegiatan industri, dikhawatirkan dapat menyebabkan perubahan kualitas perairan terutama kandungan unsur hara. Unsur hara dalam perairan akan berdampak terhadap kelimpahan fitoplankton dan kandungan klorofil-a. Penelitian ini bertujuan untuk mengetahui kelimpahan fitoplankton, konsentrasi, sebaran, dan hubungan antara klorofil-a, nitrat dan ortofosfat, serta mengkaji status kesuburan perairan di perairan Pantai Wates Kabupaten Rembang. Penelitian dilaksanakan pada bulan April 2022. Metode yang digunakan pada penelitian adalah metode deskriptif. Teknik pengambilan sampel menggunakan metode simple random sampling pada 9 stasiun. Analisis status kesuburan perairan dengan metode TSI dan sebaran konsentrasi variabel dengan metode IDW. Analisis data untuk mengetahui hubungan antar variabel menggunakan regresi linear berganda. Hasil penelitian menunjukkan kelimpahan fitoplankton berkisar antara 1.077-6.042 sel/L. Konsentrasi klorofil-a sebesar 2,117-8,376 µg/L, nitrat sebesar 0,9-1,8 mg/L dan ortofosfat sebesar 0,07-3,79 mg/L dengan sebaran cenderung menurun ke arah laut. Status kesuburan di perairan Pantai Wates termasuk kategori mesotrofik hingga eutrofik. Kelimpahan fitoplankton dipengaruhi oleh nitrat dan ortofosfat sebesar 85,1%dengan korelasi sangat kuat, sedangkan klorofil-a dipengaruhi sebesar 52% dengan korelasi kuat.
Tingkat Pemanfaatan Teripang Ekonomis Penting di Perairan Kepulauan Karimunjawa Nancy Marcelina Reinatha Amalo; Max Rudolf Muskananfola; Siti Rudiyanti
Life Science Vol. 13 No. 2 (2024): November 2024
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/unnesjlifesci.v13.i2.4417

Abstract

Sea cucumbers are an economically important fishery commodity in great demand by both local and international audiences. As time goes by, the need for sea cucumbers increases and people make excessive use of sea cucumber resources until they reach the status of over-exploitation. This makes it necessary to know the level of utilization of sea cucumbers in Karimunjawa. This research was carried out on August - September 2023 in Tanjung Gelam, Karimunjawa. The purpose of this research is to find out the catch per unit effort, maximum sustainable potential/maximum sustainable yield, and the level of utilization of sea cucumbers in Karimunjawa waters. This research uses a survey method with the survey carried out to collect data regarding catches and fishing trips for fishermen directly. The data analysis method uses model calculations Schaefer. From the research results, it was found that the average CPUE production value was 4 kg/trip. The potential MSY value obtained is 2.857 kg/year with an optimum effort (f opt) of 620 trips/year. The level of utilization of sea cucumbers has an average value of 93,27% which is categorized as optimum, so there is no need to make additional efforts because the catch is already optimal and if it is added it will cause an excess catch.  
Co-Authors Clarisa Ika Oktaviana Nancy Marcelina Reinatha Amalo Pujiono Wahyu Purnomo Siti Rudiyanti