Judul: Analisis Bioekonomi Sumber Daya Ikan Swanggi (Priacanthus macracanthus Cuvier, 1829) di Teluk Palabuhanratu, Sukabumi, Jawa Barat
Abstrak: Ikan swanggi merupakan hasil tangkapan yang menjadi incaran nelayan di wilayah Palabuhanratu karena menjadi komoditas ekspor sehingga dapat mengakibatkan terjadinya overfishing. Tujuan penelitian ini untuk menentukan kondisi populasi sumber daya ikan swanggi (Priacanthus macracanthus) di Teluk Palabuhanratu berdasarkan aspek bioekonomi. Pengambilan contoh ikan dilakukan dengan metode Penarikan Contoh Acak Sederhana dari September 2021 sampai Februari 2022. Data yang digunakan berupa data sekunder dan primer. Model produksi surplus yang digunakan untuk parameter biologi pada analisis bioekonomi adalah Fox yang lebih mampu menjelaskan data yang ada dengan korelasi 61%. Hasilnya diperoleh tangkapan lestari maksimum (MSY) sebesar 16.998 kg/trip dan upaya penangkapan (fMSY) sebesar 859 trip/tahun yang menjamin keberlanjutan sumber daya ikan swanggi. Hasil dari ketiga rezim pengelolaan fOA lebih besar dari fMEY dan fMSY, sehingga kondisi populasi sumber daya ikan swanggi (Priacanthus macracanthus) di Teluk Palabuhanratu berdasarkan pendekatan bioekonomi telah mengalami overfishing., Red bigeye is a catch that is the target of fishermen in the Palabuhanratu area because it is an export commodity so it can cause overfishing. The purpose of this study was to determine the condition of the red bigeye (Priacanthus macracanthus) population in Palabuhanratu Bay based on bioeconomic aspects. Fish sampling was carried out using the Simple Random Sampling method from September 2021 to February 2022. The data used is in the form of secondary and primary data. The surplus production model used for biological parameters in the bioeconomic analysis is Fox because it has a larger R, namely 61%. Based on the Fox model, the maximum sustainable catch (MSY) is 16,998 kg/trip and the fishing effort (fMSY) is 859 trips/year which ensures the sustainability of red bigeye resources. The results of the three management regimes fOA are greater than fMEY and fMSY, so the condition of the population of red bigeye (Priacanthus macracanthus) resources in Palabuhanratu Bay based on the bioeconomic approach has experienced overfishing.
Keyword: Bioeconomic, Palabuhanratu Bay, red bigeye, sustainability

Judul: The Status Stock of Red Bigeye (Priacanthus macracanthus Cuvier, 1829) in Palabuhanratu Bay, Sukabumi
Abstrak: Ikan swanggi (Priacanthus macracanthus) merupakan salah satu sumberdaya perikanan yang didaratkan di Pelabuhan Perikanan Nusantara (PPN) Palabuhanratu. Penelitian ini bertujuan mengkaji status stok ikan swanggi yang ditangkap nelayan di Teluk Palabuhanratu, Sukabumi. Contoh ikan diperoleh dengan metode Penarikan Contoh Acak Sederhana (PCAS) dari bulan September 2021 hingga Februari 2022. Hasil penelitian menunjukkan ikan swanggi betina lebih dominan daripada ikan swanggi jantan. Koefisien pertumbuhan (K) ikan jantan dan betina adalah 0,76 dan 0,65. Laju eksploitasi (E) ikan jantan dan betina adalah 0,63 dan 0,54. Ikan swanggi jantan dan betina memiliki ukuran pertama kali tertangkap (Lc) dan ukuran pertama kali matang gonad (Lm) sebesar 214,34 mm; 180,03 mm dan 243,50 mm; 191,50 mm yang menunjukkan growth overfishing. Model Fox dipilih dari beberapa model dengan koefisien determinasi (R2) sebesar 61,15. Status stok ikan swanggi berdasarkan data aktual 2020 termasuk under fishing. Maximum sustainable yield biomass (BMSY) ikan swanggi jantan dan betina sebesar 6% dan 15% yang menunjukkan recruitment overfishing., Red Bigeye (Priacanthus macracanthus) is one of the landed fishery resources in Nusantara Fishing Port (PPN) Palabuhanratu. This research aims to find out the status stock of red bigeye caught by a fisherman in Palabuhanratu Bay, Sukabumi. Fish samples were carried out using the Simple Random Sampling (SRS) method from September 2021 until February 2022. The results showed that red bigeye females were more dominant than males. Male and female growth coefficients (K) are 0,76 and 0,65. The exploitation rates (E) of males and females are 0,63 and 0,54. The males and females had the length of first caught (Lc) and length of the first maturity (Lm) were 214,34 mm; 180,03 mm and 243,50 mm; 191,50 mm which indicates growth overfishing. The Fox Model was selected from several models with a determination coefficient (R2) is 61,15. Red bigeye stock status based on actual data in 2020 was categorized as under fishing. The maximum sustainable yield biomass (BMSY) of Redbigeye males and females is 6% and 15% indicating that had been recruitment overfishing.
Keyword: Assessment, Management, Overfishing, PPN Palabuhanratu, Red Bigeye

Judul: Elektrodeposisi Film Tipis Semikonduktor Cu2ZnSnS4 (CZTS) pada Substrat Kaca ITO
Abstrak: Semiconductor Cu2ZnSnS4 (CZTS) thin film that can be used as absorber layers on solar cell module was made via electrodeposition method. CZTS thin film was electrodeposited on the surface of a silicate glass coated with a thin layer of indium tin oxide (ITO). Deposition process was done using potentiostatic mode at room temperature with a potential of 1.05 V for 30, 45, and 60 minutes, followed with annealing the film at 2 different temperatures, 500 ºC using furnace and 180 ºC using hot plate, both treatments for 45 minutes in N2/H2S atmosphere. The X-ray difractograms were analyzed using Match 2 program and showed that the CZTS thin films had kesterit crystalline structure, with a low percentage of CZTS phase. The thin film also contained secondary phases such as Cu2S, ZnS, and SnS. The obtained CZTS thin films had a thickness between 1.039 and 1.676 μm. Absorption study showed that the band gap energy of CZTS thin films which was annealed using furnace ranged from 1.50 to 1.52 eV, whereas that annealed using the hot plate was not observed. The band gap energy value showed that CZTS thin films can be used as sunlight absorber layers on solar cell. The formation of CZTS crystal film on this investigation was effectively performed using furnace annealing process at a temperature of 500 ºC with deposition time of 45 minutes.
Keyword: Thin film, Electrodeposition, Cu2ZnSnS4