Samudra Arktik melewati titik kritis seiring penurunan kadar nitrat

Kamis, 28 Mei 2026

Dilaporkan oleh AI

Samudra Arktik telah melewati titik kritis sekitar tahun 2009, menurut sebuah studi baru yang menunjukkan bahwa hilangnya es laut telah mengurangi kadar nitrat di dalam air secara tajam.

Para peneliti dari University of Edinburgh menganalisis data selama lebih dari 20 tahun dari Selat Fram. Mereka menemukan bahwa penurunan kadar nitrat dimulai ketika es laut menyusut dengan cepat, sehingga perairan dangkal terpapar lebih banyak sinar matahari dan mempercepat proses yang disebut denitrifikasi bentik yang menghilangkan nutrisi tersebut dari air laut.

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