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 e3763

Ämneskategorier

Övrig annan teknik

Naturgeografi

Miljövetenskap

DOI

10.1002/ecy.3763

PubMed

35612376

Mer information

Senast uppdaterat

2024-03-07