Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Depth and basin shape constrain ecosystem metabolism in lakes dominated by benthic primary producers
Umeå universitet, Institutionen för ekologi, miljö och geovetenskap.ORCID-id: 0000-0003-0747-3524
Umeå universitet, Institutionen för ekologi, miljö och geovetenskap.ORCID-id: 0000-0002-2858-6299
Umeå universitet, Institutionen för ekologi, miljö och geovetenskap.ORCID-id: 0000-0001-5730-0694
Umeå universitet, Institutionen för ekologi, miljö och geovetenskap.ORCID-id: 0000-0001-6700-6149
Ansvarlig organisasjon
2022 (engelsk)Inngår i: Limnology and Oceanography, ISSN 0024-3590, E-ISSN 1939-5590, Vol. 67, nr 12, s. 2763-2778Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Metabolism is one of the most fundamental ecosystem processes, but the drivers of variation in metabolic rates among lakes dominated by benthic primary producers remain poorly constrained. Here, we report the magnitudes and potential drivers of whole-lake metabolism across 43 Swedish arctic–alpine lakes, based on the free-water diel oxygen technique with sondes deployed during the open-water season near the surface and bottom of the lakes. Gross primary production (GPP) and ecosystem respiration (R) were strongly coupled and ranged from 0.06 to 0.45 mg and 0.05 to 0.43 mg L−1 d−1 among lakes. On average, GPP and R decreased eightfold from relatively shallow to deep lakes (mean depth 0.5–10.9 m) and twofold from concave to convex lakes (mean depth: maximum depth 0.2–0.5). We attribute this to light limitation and shape-specific sensitivity of benthic GPP to disturbance by lake ice. Net ecosystem production (GPP-R) ranged from −0.09 to 0.14 mg L−1 d−1 and switched, on average, from positive to negative towards deeper lakes and lakes richer in dissolved organic carbon (DOC; 0.5–7.4 mg DOC L−1). Uncertainties in metabolism estimates were high (around one and three times mean R and GPP), especially in deep lakes with low insulation and diurnally variable wind speed. Our results confirm the role of DOC in stimulating net heterotrophy and highlight novel effects of lake shape on productivity in benthic-dominated lake ecosystems and its response to changes in lake ice cover.

sted, utgiver, år, opplag, sider
Association for the Sciences of Limnology and Oceanography , 2022. Vol. 67, nr 12, s. 2763-2778
HSV kategori
Identifikatorer
URN: urn:nbn:se:polar:diva-9007DOI: 10.1002/lno.12236ISI: 000864192700001Scopus ID: 2-s2.0-85139442695OAI: oai:DiVA.org:polar-9007DiVA, id: diva2:1729616
Forskningsfinansiär
Swedish Research Council Formas, 942.2015-723Swedish Research Council, 2016-05275Knut and Alice Wallenberg Foundation, 2016.0083
Merknad

Originally included in thesis in manuscript form. 

Tilgjengelig fra: 2023-01-21 Laget: 2023-01-21 Sist oppdatert: 2023-01-21bibliografisk kontrollert

Open Access i DiVA

Fulltekst mangler i DiVA

Andre lenker

Forlagets fulltekstScopusFulltext

Søk i DiVA

Av forfatter/redaktør
Klaus, MarcusVerheijen, Hendricus A.Karlsson, JanSeekell, David A.
I samme tidsskrift
Limnology and Oceanography

Søk utenfor DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric

doi
urn-nbn
Totalt: 190 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf