Assessing arctic flora composition in the Siberian treeline ecotone by vegetation mapping, pollen analyses and sedimentary DNA metabarcoding
Arctic environments are one of the most climatically influenced areas worldwide. These influences are currently causing major changes in vegetation composition, for example in the Taymyr lowlands, which harbour the northernmost boreal-arctic treeline areas of the world. The most dominant species of...
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ftawi:oai:epic.awi.de:41408 2023-05-15T14:27:38+02:00 Assessing arctic flora composition in the Siberian treeline ecotone by vegetation mapping, pollen analyses and sedimentary DNA metabarcoding Niemeyer, Bastian Epp, Laura Herzschuh, Ulrike Pestryakova, L. A. 2015-07-27 application/pdf https://epic.awi.de/id/eprint/41408/ https://epic.awi.de/id/eprint/41408/2/B_Niemeyer_INQUA.pdf https://hdl.handle.net/10013/epic.48352 https://hdl.handle.net/10013/epic.48352.d002 unknown https://epic.awi.de/id/eprint/41408/2/B_Niemeyer_INQUA.pdf https://hdl.handle.net/10013/epic.48352.d002 Niemeyer, B. , Epp, L. , Herzschuh, U. orcid:0000-0003-0999-1261 and Pestryakova, L. A. (2015) Assessing arctic flora composition in the Siberian treeline ecotone by vegetation mapping, pollen analyses and sedimentary DNA metabarcoding , 19th Conference of the International Union for Quaternary Research (INQUA), Nagoya, Japan, 26 July 2015 - 2 August 2015 . hdl:10013/epic.48352 EPIC319th Conference of the International Union for Quaternary Research (INQUA), Nagoya, Japan, 2015-07-26-2015-08-02 Conference notRev 2015 ftawi 2021-12-24T15:41:46Z Arctic environments are one of the most climatically influenced areas worldwide. These influences are currently causing major changes in vegetation composition, for example in the Taymyr lowlands, which harbour the northernmost boreal-arctic treeline areas of the world. The most dominant species of the treeline ecotone in this region are Larix gmelinii, Betula nana and Alnus viridis. They are presently shifting in density and range, and have done so multiple times throughout the Holocene. To understand the vegetation changes it is necessary to investigate the current state, before deducing changes for other time phases of the Holocene. To this end a field campaign was carried out at the Taymyr lowlands in 2013 to perform a multidisciplinary investigation by combining methods from vegetation mapping, palynological records and sedimentary DNA metabarcoding. We sampled lake sediments and mapped the vegetation along a transect spanning the treeline ecotone, with changing vegetation composition and density. Our results of the surveyed vegetation will help to investigate the current state of vegetation and will also be used as calibration of the pollen and DNA metabarcoding records. The comparison of the vegetation and pollen record will allow the assessment of over- or underrepresentation of certain taxa within the pollen signal, and this will enable a more secure interpretation of historic pollen records. We will also test this for the DNA metabarcoding data, which has not yet been systematically done for lake sediments in arctic latitudes. This multidisciplinary investigation will draw a more comprehensive image of the current vegetation composition at the Taymyr lowlands than has been possible to date, and will enable a more secure interpretation of historical vegetation change in this highly dynamic area. Conference Object Arctic Arctic Betula nana Taymyr Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Taymyr ENVELOPE(89.987,89.987,68.219,68.219) |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Arctic environments are one of the most climatically influenced areas worldwide. These influences are currently causing major changes in vegetation composition, for example in the Taymyr lowlands, which harbour the northernmost boreal-arctic treeline areas of the world. The most dominant species of the treeline ecotone in this region are Larix gmelinii, Betula nana and Alnus viridis. They are presently shifting in density and range, and have done so multiple times throughout the Holocene. To understand the vegetation changes it is necessary to investigate the current state, before deducing changes for other time phases of the Holocene. To this end a field campaign was carried out at the Taymyr lowlands in 2013 to perform a multidisciplinary investigation by combining methods from vegetation mapping, palynological records and sedimentary DNA metabarcoding. We sampled lake sediments and mapped the vegetation along a transect spanning the treeline ecotone, with changing vegetation composition and density. Our results of the surveyed vegetation will help to investigate the current state of vegetation and will also be used as calibration of the pollen and DNA metabarcoding records. The comparison of the vegetation and pollen record will allow the assessment of over- or underrepresentation of certain taxa within the pollen signal, and this will enable a more secure interpretation of historic pollen records. We will also test this for the DNA metabarcoding data, which has not yet been systematically done for lake sediments in arctic latitudes. This multidisciplinary investigation will draw a more comprehensive image of the current vegetation composition at the Taymyr lowlands than has been possible to date, and will enable a more secure interpretation of historical vegetation change in this highly dynamic area. |
format |
Conference Object |
author |
Niemeyer, Bastian Epp, Laura Herzschuh, Ulrike Pestryakova, L. A. |
spellingShingle |
Niemeyer, Bastian Epp, Laura Herzschuh, Ulrike Pestryakova, L. A. Assessing arctic flora composition in the Siberian treeline ecotone by vegetation mapping, pollen analyses and sedimentary DNA metabarcoding |
author_facet |
Niemeyer, Bastian Epp, Laura Herzschuh, Ulrike Pestryakova, L. A. |
author_sort |
Niemeyer, Bastian |
title |
Assessing arctic flora composition in the Siberian treeline ecotone by vegetation mapping, pollen analyses and sedimentary DNA metabarcoding |
title_short |
Assessing arctic flora composition in the Siberian treeline ecotone by vegetation mapping, pollen analyses and sedimentary DNA metabarcoding |
title_full |
Assessing arctic flora composition in the Siberian treeline ecotone by vegetation mapping, pollen analyses and sedimentary DNA metabarcoding |
title_fullStr |
Assessing arctic flora composition in the Siberian treeline ecotone by vegetation mapping, pollen analyses and sedimentary DNA metabarcoding |
title_full_unstemmed |
Assessing arctic flora composition in the Siberian treeline ecotone by vegetation mapping, pollen analyses and sedimentary DNA metabarcoding |
title_sort |
assessing arctic flora composition in the siberian treeline ecotone by vegetation mapping, pollen analyses and sedimentary dna metabarcoding |
publishDate |
2015 |
url |
https://epic.awi.de/id/eprint/41408/ https://epic.awi.de/id/eprint/41408/2/B_Niemeyer_INQUA.pdf https://hdl.handle.net/10013/epic.48352 https://hdl.handle.net/10013/epic.48352.d002 |
long_lat |
ENVELOPE(89.987,89.987,68.219,68.219) |
geographic |
Arctic Taymyr |
geographic_facet |
Arctic Taymyr |
genre |
Arctic Arctic Betula nana Taymyr |
genre_facet |
Arctic Arctic Betula nana Taymyr |
op_source |
EPIC319th Conference of the International Union for Quaternary Research (INQUA), Nagoya, Japan, 2015-07-26-2015-08-02 |
op_relation |
https://epic.awi.de/id/eprint/41408/2/B_Niemeyer_INQUA.pdf https://hdl.handle.net/10013/epic.48352.d002 Niemeyer, B. , Epp, L. , Herzschuh, U. orcid:0000-0003-0999-1261 and Pestryakova, L. A. (2015) Assessing arctic flora composition in the Siberian treeline ecotone by vegetation mapping, pollen analyses and sedimentary DNA metabarcoding , 19th Conference of the International Union for Quaternary Research (INQUA), Nagoya, Japan, 26 July 2015 - 2 August 2015 . hdl:10013/epic.48352 |
_version_ |
1766301458109562880 |