Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
UAV reveals substantial but heterogeneous effects of herbivores on Arctic vegetation
Umeå universitet, Institutionen för ekologi, miljö och geovetenskap.ORCID-id: 0000-0003-2890-8873
Umeå universitet, Institutionen för ekologi, miljö och geovetenskap.ORCID-id: 0000-0002-6943-1218
Ansvarig organisation
2021 (Engelska)Ingår i: Scientific Reports, E-ISSN 2045-2322, Vol. 11, nr 1, artikel-id 19468Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Understanding how herbivores shape plant biomass and distribution is a core challenge in ecology. Yet, the lack of suitable remote sensing technology limits our knowledge of temporal and spatial impacts of mammal herbivores in the Earth system. The regular interannual density fluctuations of voles and lemmings are exceptional with their large reduction of plant biomass in Arctic landscapes during peak years (12–24%) as previously shown at large spatial scales using satellites. This provides evidence that herbivores are important drivers of observed global changes in vegetation productivity. Here, we use a novel approach with repeated unmanned aerial vehicle (UAV) flights, to map vegetation impact by rodents, indicating that many important aspects of vegetation dynamics otherwise hidden by the coarse resolution of satellite images, including plant–herbivore interactions, can be revealed using UAVs. We quantify areas impacted by rodents at four complex Arctic landscapes with very high spatial resolution UAV imagery to get a new perspective on how herbivores shape Arctic ecosystems. The area impacted by voles and lemmings is indeed substantial, larger at higher altitude tundra environments, varies between habitats depending on local snow cover and plant community composition, and is heterogeneous even within habitats at submeter scales. Coupling this with spectral reflectance of vegetation (NDVI), we can show that the impact on central ecosystem properties like GPP and biomass is stronger than currently accounted for in Arctic ecosystems. As an emerging technology, UAVs will allow us to better disentangle important information on how herbivores maintain spatial heterogeneity, function and diversity in natural ecosystems.

Ort, förlag, år, upplaga, sidor
Nature Publishing Group , 2021. Vol. 11, nr 1, artikel-id 19468
Nationell ämneskategori
Ekologi
Identifikatorer
URN: urn:nbn:se:polar:diva-8849DOI: 10.1038/s41598-021-98497-5ISI: 000702737500111PubMedID: 34593844Scopus ID: 2-s2.0-85116391891OAI: oai:DiVA.org:polar-8849DiVA, id: diva2:1626128
Tillgänglig från: 2022-01-10 Skapad: 2022-01-10 Senast uppdaterad: 2022-09-15Bibliografiskt granskad

Open Access i DiVA

Fulltext saknas i DiVA

Övriga länkar

Förlagets fulltextPubMedScopusFulltext

Sök vidare i DiVA

Av författaren/redaktören
Siewert, Matthias B.Olofsson, Johan
I samma tidskrift
Scientific Reports
Ekologi

Sök vidare utanför DiVA

GoogleGoogle Scholar

doi
pubmed
urn-nbn

Altmetricpoäng

doi
pubmed
urn-nbn
Totalt: 32 träffar
RefereraExporteraLänk till posten
Permanent länk

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