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
Late-Holocene climate and vegetation dynamics in eastern Lesotho highlands
Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för geologiska vetenskaper.
Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för geologiska vetenskaper.
Vise andre og tillknytning
Rekke forfattare: 62018 (engelsk)Inngår i: The Holocene, ISSN 0959-6836, E-ISSN 1477-0911, Vol. 28, nr 9, s. 1483-1494Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The eastern Lesotho highlands are of considerable hydrological importance to southern Africa as a so-called water tower' for the surrounding region. Here, we contribute proxy-data inferring climate and vegetation changes over the past 1600 years, assessing in parallel inorganic and organic chemical analyses on a sediment core from Ladybird wetland, eastern Lesotho. Several proxies were used to determine changes in local vegetation dynamics, productivity, hydrology ((13) C, (15) N, C/N, TOC) and the input and source of the detrital components (Ca/Ti, CIA). The first part of the multi-proxy record (AD 400-800) shows stable terrestrial conditions and low detrital input, followed by higher variability in almost all proxies between ca. AD 900 and 1200. The (13) C record infers a higher proportion of C-4 vegetation, tentatively associated with higher temperatures during this phase, coeval with the Medieval Climate Anomaly (MCA). After AD 1200, local conditions change gradually from purely terrestrial, towards the typical wetland environment prevailing today. A higher proportion of C-3 plants and possibly an increase in aquatic organisms within the organic matrix corresponds with decreasing detrital input, suggesting locally high available moisture in this part of Lesotho during the Little Ice Age (LIA). Although age-model constraints impedes a robust regional comparison, the inferred climate variability is discussed as a tentative response to enhanced mid-latitude cyclonic activity during LIA, and the variable MCA climate conditions as indirectly dictated by changes in solar activity.

sted, utgiver, år, opplag, sider
2018. Vol. 28, nr 9, s. 1483-1494
Emneord [en]
carbon isotope composition, geochemistry, Lesotho, palaeoclimate, palaeohydrology, palaeovegetation, Southern Africa, XRF
HSV kategori
Identifikatorer
URN: urn:nbn:se:su:diva-160167DOI: 10.1177/0959683618777054ISI: 000443315700009OAI: oai:DiVA.org:su-160167DiVA, id: diva2:1248809
Tilgjengelig fra: 2018-09-17 Laget: 2018-09-17 Sist oppdatert: 2025-02-07bibliografisk kontrollert

Open Access i DiVA

Fulltekst mangler i DiVA

Andre lenker

Forlagets fulltekst

Person

Norström, ElinBringensparr, CarolineKylander, Malin

Søk i DiVA

Av forfatter/redaktør
Norström, ElinBringensparr, CarolineKylander, Malin
Av organisasjonen
I samme tidsskrift
The Holocene

Søk utenfor DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric

doi
urn-nbn
Totalt: 117 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