TY - RPRT TI - Observed declines in leaf nitrogen explained by photosynthetic acclimation to CO 2 AU - Bassiouni, Maoya [University of California, Berkeley, CA (United States)] (ORCID:0000000157959894) AU - G. Smith, Nicholas [Texas Tech University, Lubbock, TX (United States)] AU - Reu, Jacqueline C. [University of California, Berkeley, CA (United States)] (ORCID:0000000286888316) AU - Peñuelas, Josep [Universitat Autonoma de Barcelona (Spain); Consejo Superior de Investigaciones Cientificas (CSIC), Barcelona (Spain); Centre de Recerca Ecològica i Aplicacions Forestals (CREAF), Cerdanyola del Vallès (Spain)] (ORCID:0000000272150150) AU - Keenan, Trevor F. [University of California, Berkeley, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)] (ORCID:0000000233470258) PY - 2025 DO - 10.1073/pnas.2501958122 UR - https://www.osti.gov/biblio/3022711 ID - 3022711 ER -