1Program Studi Manajemen Sumberdaya Perairan, Departemen Sumberdaya Akuatik,, Indonesia
2Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro, Indonesia
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@article{MARJ24250, author = {Elvina Gianina Meliala and Pujiono Wahyu Purnomo and Arif Rahman}, title = {STATUS KESUBURAN PERAIRAN BERDASARKAN SEBARAN KLOROFIL-a, BAHAN ORGANIK, NITRAT DAN FOSFAT DI PESISIR SAYUNG, DEMAK Aquatic Trophic Status Based on Chlorophyll-a, Organic Matter, Nitrate and Phosphate Distribution in the Coast of Sayung, Demak}, journal = {Management of Aquatic Resources Journal (MAQUARES)}, volume = {8}, number = {3}, year = {2019}, keywords = {Bahan Organik, Fosfat, Kesuburan, Klorofil-a, Nitrat}, abstract = { ABSTRAK Pesisir Sayung terletak di utara Laut Jawa dan didominasi oleh hutan mangrove dengan populasi penduduk yang tinggi. Adanya hutan mangrove dan aktivitas manusia di sekitar pesisir berpotensi membuat perairan menjadi kaya bahan organik. Tujuan dari penelitian adalah untuk mengetahui status dan sebaran kesuburan perairan dan mengkaji hubungan antara klorofil-a, bahan organik, nitrat dan fosfat di Desa Bedono dan Timbulsloko, Sayung, Demak. Penelitian dilakukan pada bulan Desember 2018. Metode yang digunakan pada penelitian adalah metode deskriptif. Teknik pengambilan sampel menggunakan metode purposive sampling pada 2 stasiun dengan 4 titik di setiap stasiunnya. Analisis status kesuburan perairan dengan metode TSI dan sebaran kesuburan dengan metode IDW. Analisa data untuk mengetahui hubungan antar variabel menggunakan regresi linear berganda. Hasil pengukuran menunjukkan bahwa status kesuburan perairan di pesisir Sayung termasuk kategori eutrofik. Kesuburan perairan di Bedono (69,04) lebih tinggi daripada Timbulsloko (67,94) dan cenderung menurun ke arah laut. Klorofil-a berhubungan kuat dengan nitrat, fosfat dan BOD (r=0,915). Pada perairan Bedono, keberadaan klorofil-a cenderung dipengaruhi oleh nitrat, sedangkan pada perairan Timbulsloko cenderung dipengaruhi oleh fosfat. ABSTRACT The Coast of Sayung is located in the North of Java Sea. This area is dominated by mangrove forest with a high rural population. The existence of mangrove forest and human activities in the area make the waters enriched with organic matters. Aims of this research are to know the category and distribution of trophic status also to understand the correlation among organic matters, chlorophyll-a, nitrate and phospate in Bedono and Timbulsloko, Sayung, Demak. This research was conducted on December 2018 and used descriptive method. The technical method of sampling used purposive sampling on two stations of four points each. Trophic State Index (TSI) used to analyze the trophic status in the coast of Sayung an the distribution used IDW method. Data analysis to find out the correlation among variabels used multiple linear regression method. The final result shows that the trophic status in the coast of Sayung is categorized as eutrophic. The trophic state in Bedono (69,04) is higher than in Timbulsloko (67,94). Chlorophyll-a had strong correlation with nitrate, phosphate and BOD (r=0,915). In Bedono, chlorophyll-a mostly affected by nitrate while in Timbulsloko it mostly affected by phosphate. }, issn = {2721-6233}, pages = {155--161} doi = {10.14710/marj.v8i3.24250}, url = {https://ejournal3.undip.ac.id/index.php/maquares/article/view/24250} }
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ABSTRAK
Pesisir Sayung terletak di utara Laut Jawa dan didominasi oleh hutan mangrove dengan populasi penduduk yang tinggi. Adanya hutan mangrove dan aktivitas manusia di sekitar pesisir berpotensi membuat perairan menjadi kaya bahan organik. Tujuan dari penelitian adalah untuk mengetahui status dan sebaran kesuburan perairan dan mengkaji hubungan antara klorofil-a, bahan organik, nitrat dan fosfat di Desa Bedono dan Timbulsloko, Sayung, Demak. Penelitian dilakukan pada bulan Desember 2018. Metode yang digunakan pada penelitian adalah metode deskriptif. Teknik pengambilan sampel menggunakan metode purposive sampling pada 2 stasiun dengan 4 titik di setiap stasiunnya. Analisis status kesuburan perairan dengan metode TSI dan sebaran kesuburan dengan metode IDW. Analisa data untuk mengetahui hubungan antar variabel menggunakan regresi linear berganda. Hasil pengukuran menunjukkan bahwa status kesuburan perairan di pesisir Sayung termasuk kategori eutrofik. Kesuburan perairan di Bedono (69,04) lebih tinggi daripada Timbulsloko (67,94) dan cenderung menurun ke arah laut. Klorofil-a berhubungan kuat dengan nitrat, fosfat dan BOD (r=0,915). Pada perairan Bedono, keberadaan klorofil-a cenderung dipengaruhi oleh nitrat, sedangkan pada perairan Timbulsloko cenderung dipengaruhi oleh fosfat.
ABSTRACT
The Coast of Sayung is located in the North of Java Sea. This area is dominated by mangrove forest with a high rural population. The existence of mangrove forest and human activities in the area make the waters enriched with organic matters. Aims of this research are to know the category and distribution of trophic status also to understand the correlation among organic matters, chlorophyll-a, nitrate and phospate in Bedono and Timbulsloko, Sayung, Demak. This research was conducted on December 2018 and used descriptive method. The technical method of sampling used purposive sampling on two stations of four points each. Trophic State Index (TSI) used to analyze the trophic status in the coast of Sayung an the distribution used IDW method. Data analysis to find out the correlation among variabels used multiple linear regression method. The final result shows that the trophic status in the coast of Sayung is categorized as eutrophic. The trophic state in Bedono (69,04) is higher than in Timbulsloko (67,94). Chlorophyll-a had strong correlation with nitrate, phosphate and BOD (r=0,915). In Bedono, chlorophyll-a mostly affected by nitrate while in Timbulsloko it mostly affected by phosphate.
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