Unified understanding of intrinsic and extrinsic controls of dissolved organic carbon reactivity in aquatic ecosystems
Artikel i vetenskaplig tidskrift, 2022
Despite our growing understanding of the global carbon cycle, scientific consensus on the drivers and mechanisms that control dissolved organic carbon (DOC) turnover in aquatic systems is lacking, hampered by the mismatch between research that approaches DOC reactivity from either intrinsic (inherent chemical properties) or extrinsic (environmental context) perspectives. Here we propose a conceptual view of DOC reactivity in which the combination of intrinsic and extrinsic factors controls turnover rates and determines which reactions will occur. We review three major types of reactions (biological, photochemical, and flocculation) from an intrinsic chemical perspective and further define the environmental features that modulate the expression of chemically inherent reactivity potential. Finally, we propose hypotheses of how extrinsic and intrinsic factors together shape patterns in DOC turnover across the land-to-ocean continuum, underscoring that there is no intrinsic DOC reactivity without environmental context. By acknowledging the intrinsic–extrinsic control duality, our framework intends to foster improved modeling of DOC reactivity and its impact on ecosystem services.
dissolved organic carbon
sorption
photoreactivity
bioreactivity
Författare
Martin Berggren
Lunds universitet
François Guillemette
Université du Québec à Trois-Rivières
Groupe de Recherche Interuniversitaire en Limnologie (GRIL)
Magdalena Bieroza
Sveriges lantbruksuniversitet (SLU)
Ishi Buffam
Sveriges lantbruksuniversitet (SLU)
Anne Deininger
Norsk institutt for vannforskning
Universitetet i Agder
Jeffrey A. Hawkes
Uppsala universitet
Dolly N. Kothawala
Uppsala universitet
Richard LaBrie
TU Bergakademie Freiberg
Université de Montréal
Groupe de Recherche Interuniversitaire en Limnologie (GRIL)
Jean François Lapierre
Université de Montréal
Groupe de Recherche Interuniversitaire en Limnologie (GRIL)
Kathleen Murphy
Chalmers, Arkitektur och samhällsbyggnadsteknik
Enass S. Al-Kharusi
Lunds universitet
Mayra P.D. Rulli
Lunds universitet
Geert Hensgens
Lunds universitet
Hani Younes
Lunds universitet
Urban Wuensch
Chalmers, Arkitektur och samhällsbyggnadsteknik, Vatten Miljö Teknik
Ecology
0012-9658 (ISSN) 19399170 (eISSN)
Vol. 103 9 e3763Ämneskategorier
Övrig annan teknik
Naturgeografi
Miljövetenskap
DOI
10.1002/ecy.3763
PubMed
35612376