A Chironomid Record of Early-Middle Holocene Environmental Evolution in the Darhad Basin, Northern Mongolia
Under the influence of various circulation systems, the Holocene humidity conditions on the Mongolian Plateau are spatially heterogeneous and the underlying mechanism is still ambiguous. The complexity of climate change may affect the accuracy of assessing lake ecosystem evolution. In this study, based on the precise chronology, a chironomid assemblage sequence from the Darhad Basin in northern Mongolia is analyzed to elucidate the hydroclimate variation during the early-middle Holocene. The results show that the chironomid communities changed suddenly from littoral taxa to sublittoral/profundal taxa at about 9 cal kyr BP, reflecting an environmental transition from a river or shallow lake condition to a deep lake environment. Thereafter, most parts of the paleolake remained at a relatively high level until 4.5 cal kyr BP. This hydrological pattern resembles the typical humidity variations in the Westerlies affected regions, except that the onset of wetter conditions occurred one thousand years earlier as reflected in our results. The melting of glaciers and permafrost in the basin resulting from the early increased summer solar insolation could be a feasible explanation for these time advances.
Medienart: |
E-Artikel |
---|
Erscheinungsjahr: |
2022 |
---|---|
Erschienen: |
2022 |
Enthalten in: |
Zur Gesamtaufnahme - volume:13 |
---|---|
Enthalten in: |
Insects - 13(2022), 5 vom: 13. Mai |
Sprache: |
Englisch |
---|
Beteiligte Personen: |
Ni, Zhenyu [VerfasserIn] |
---|
Links: |
---|
Themen: |
Central Asia |
---|
Anmerkungen: |
Date Revised 16.07.2022 published: Electronic Citation Status PubMed-not-MEDLINE |
---|
doi: |
10.3390/insects13050461 |
---|
funding: |
|
---|---|
Förderinstitution / Projekttitel: |
|
PPN (Katalog-ID): |
NLM34144118X |
---|
LEADER | 01000naa a22002652 4500 | ||
---|---|---|---|
001 | NLM34144118X | ||
003 | DE-627 | ||
005 | 20231226011804.0 | ||
007 | cr uuu---uuuuu | ||
008 | 231226s2022 xx |||||o 00| ||eng c | ||
024 | 7 | |a 10.3390/insects13050461 |2 doi | |
028 | 5 | 2 | |a pubmed24n1138.xml |
035 | |a (DE-627)NLM34144118X | ||
035 | |a (NLM)35621796 | ||
035 | |a (PII)461 | ||
040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
041 | |a eng | ||
100 | 1 | |a Ni, Zhenyu |e verfasserin |4 aut | |
245 | 1 | 2 | |a A Chironomid Record of Early-Middle Holocene Environmental Evolution in the Darhad Basin, Northern Mongolia |
264 | 1 | |c 2022 | |
336 | |a Text |b txt |2 rdacontent | ||
337 | |a ƒaComputermedien |b c |2 rdamedia | ||
338 | |a ƒa Online-Ressource |b cr |2 rdacarrier | ||
500 | |a Date Revised 16.07.2022 | ||
500 | |a published: Electronic | ||
500 | |a Citation Status PubMed-not-MEDLINE | ||
520 | |a Under the influence of various circulation systems, the Holocene humidity conditions on the Mongolian Plateau are spatially heterogeneous and the underlying mechanism is still ambiguous. The complexity of climate change may affect the accuracy of assessing lake ecosystem evolution. In this study, based on the precise chronology, a chironomid assemblage sequence from the Darhad Basin in northern Mongolia is analyzed to elucidate the hydroclimate variation during the early-middle Holocene. The results show that the chironomid communities changed suddenly from littoral taxa to sublittoral/profundal taxa at about 9 cal kyr BP, reflecting an environmental transition from a river or shallow lake condition to a deep lake environment. Thereafter, most parts of the paleolake remained at a relatively high level until 4.5 cal kyr BP. This hydrological pattern resembles the typical humidity variations in the Westerlies affected regions, except that the onset of wetter conditions occurred one thousand years earlier as reflected in our results. The melting of glaciers and permafrost in the basin resulting from the early increased summer solar insolation could be a feasible explanation for these time advances | ||
650 | 4 | |a Journal Article | |
650 | 4 | |a Central Asia | |
650 | 4 | |a Westerlies | |
650 | 4 | |a chironomid subfossil | |
650 | 4 | |a functional traits | |
650 | 4 | |a paleoenvironmental reconstruction | |
700 | 1 | |a Zhang, Enlou |e verfasserin |4 aut | |
700 | 1 | |a Yi, Sangheon |e verfasserin |4 aut | |
700 | 1 | |a Sun, Weiwei |e verfasserin |4 aut | |
700 | 1 | |a Meng, Xianqiang |e verfasserin |4 aut | |
700 | 1 | |a Ning, Dongliang |e verfasserin |4 aut | |
700 | 1 | |a Kim, Jin Cheul |e verfasserin |4 aut | |
773 | 0 | 8 | |i Enthalten in |t Insects |d 2010 |g 13(2022), 5 vom: 13. Mai |w (DE-627)NLM234293764 |x 2075-4450 |7 nnns |
773 | 1 | 8 | |g volume:13 |g year:2022 |g number:5 |g day:13 |g month:05 |
856 | 4 | 0 | |u http://dx.doi.org/10.3390/insects13050461 |3 Volltext |
912 | |a GBV_USEFLAG_A | ||
912 | |a GBV_NLM | ||
951 | |a AR | ||
952 | |d 13 |j 2022 |e 5 |b 13 |c 05 |