TY - RPRT TI - Observed declines in upper ocean phosphate-to-nitrate availability AU - Gerace, Skylar D. [Univ. of California, Irvine, CA (United States)] (ORCID:0000000240745053) AU - Yu, Jun [Univ. of California, Irvine, CA (United States)] AU - Moore, J. Keith [Univ. of California, Irvine, CA (United States)] AU - Martiny, Adam C. [Univ. of California, Irvine, CA (United States)] (ORCID:0000000328294314) PY - 2025 DO - 10.1073/pnas.2411835122 UR - https://www.osti.gov/biblio/2511169 ID - 2511169 ER -