Ecology of the diatom Aulacoseira pusilla in oligotrophic mountain lakes, with implications for paleoclimate reconstructions
Diatoms in lake sediments are used in paleoclimate reconstructions, particularly in treeless areas such as arctic and alpine regions. Some diatom species in the Aulacoseira group are often thought to bloom as lakes turnover (i.e., mix), suggesting links between these taxa and ice-out conditions. We...
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ftdoajarticles:oai:doaj.org/article:ea4e4b202fbd499184cd413e789360ed 2023-05-15T14:14:36+02:00 Ecology of the diatom Aulacoseira pusilla in oligotrophic mountain lakes, with implications for paleoclimate reconstructions Edna Luz Pedraza Garzon Jasmine E. Saros 2022-12-01T00:00:00Z https://doi.org/10.1080/15230430.2022.2071088 https://doaj.org/article/ea4e4b202fbd499184cd413e789360ed EN eng Taylor & Francis Group https://www.tandfonline.com/doi/10.1080/15230430.2022.2071088 https://doaj.org/toc/1523-0430 https://doaj.org/toc/1938-4246 doi:10.1080/15230430.2022.2071088 1938-4246 1523-0430 https://doaj.org/article/ea4e4b202fbd499184cd413e789360ed Arctic, Antarctic, and Alpine Research, Vol 54, Iss 1, Pp 147-162 (2022) Aulacoseira pusilla light alpine lake thermal structure diatom autoecology Environmental sciences GE1-350 Ecology QH540-549.5 article 2022 ftdoajarticles https://doi.org/10.1080/15230430.2022.2071088 2022-12-30T21:46:14Z Diatoms in lake sediments are used in paleoclimate reconstructions, particularly in treeless areas such as arctic and alpine regions. Some diatom species in the Aulacoseira group are often thought to bloom as lakes turnover (i.e., mix), suggesting links between these taxa and ice-out conditions. We investigated the distribution and ecology of Aulacoseira pusilla (Meister) Tuji & Houki 2004 in three high-elevation lakes of the U.S. Central Rocky Mountains. Vertical distributions of A. pusilla were quantified every three to four days shortly after the ice-out period for three weeks during July 2017. Populations from two of the lakes were incubated in situ in two experiments to assess the effects of Incubation depth × Nutrient additions and to quantify responses to light. In stratified conditions, the vertical distributions of this species varied spatially and temporally across the three lakes during the study period. There were blooms in the epilimnion of a moderately transparent lake and in deeper waters of a clear lake. Our results suggest that water transparency and its effects on light availability are important when defining relationships between this species and lake thermal conditions. Enhanced understanding of the ecology of A. pusilla will strengthen paleoclimate reconstructions using this species. Article in Journal/Newspaper Antarctic and Alpine Research Arctic Arctic Directory of Open Access Journals: DOAJ Articles Alpine Lake ENVELOPE(-129.182,-129.182,55.529,55.529) Arctic Clear Lake ENVELOPE(-112.122,-112.122,57.734,57.734) Meister ENVELOPE(162.783,162.783,-74.233,-74.233) Arctic, Antarctic, and Alpine Research 54 1 147 162 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Aulacoseira pusilla light alpine lake thermal structure diatom autoecology Environmental sciences GE1-350 Ecology QH540-549.5 |
spellingShingle |
Aulacoseira pusilla light alpine lake thermal structure diatom autoecology Environmental sciences GE1-350 Ecology QH540-549.5 Edna Luz Pedraza Garzon Jasmine E. Saros Ecology of the diatom Aulacoseira pusilla in oligotrophic mountain lakes, with implications for paleoclimate reconstructions |
topic_facet |
Aulacoseira pusilla light alpine lake thermal structure diatom autoecology Environmental sciences GE1-350 Ecology QH540-549.5 |
description |
Diatoms in lake sediments are used in paleoclimate reconstructions, particularly in treeless areas such as arctic and alpine regions. Some diatom species in the Aulacoseira group are often thought to bloom as lakes turnover (i.e., mix), suggesting links between these taxa and ice-out conditions. We investigated the distribution and ecology of Aulacoseira pusilla (Meister) Tuji & Houki 2004 in three high-elevation lakes of the U.S. Central Rocky Mountains. Vertical distributions of A. pusilla were quantified every three to four days shortly after the ice-out period for three weeks during July 2017. Populations from two of the lakes were incubated in situ in two experiments to assess the effects of Incubation depth × Nutrient additions and to quantify responses to light. In stratified conditions, the vertical distributions of this species varied spatially and temporally across the three lakes during the study period. There were blooms in the epilimnion of a moderately transparent lake and in deeper waters of a clear lake. Our results suggest that water transparency and its effects on light availability are important when defining relationships between this species and lake thermal conditions. Enhanced understanding of the ecology of A. pusilla will strengthen paleoclimate reconstructions using this species. |
format |
Article in Journal/Newspaper |
author |
Edna Luz Pedraza Garzon Jasmine E. Saros |
author_facet |
Edna Luz Pedraza Garzon Jasmine E. Saros |
author_sort |
Edna Luz Pedraza Garzon |
title |
Ecology of the diatom Aulacoseira pusilla in oligotrophic mountain lakes, with implications for paleoclimate reconstructions |
title_short |
Ecology of the diatom Aulacoseira pusilla in oligotrophic mountain lakes, with implications for paleoclimate reconstructions |
title_full |
Ecology of the diatom Aulacoseira pusilla in oligotrophic mountain lakes, with implications for paleoclimate reconstructions |
title_fullStr |
Ecology of the diatom Aulacoseira pusilla in oligotrophic mountain lakes, with implications for paleoclimate reconstructions |
title_full_unstemmed |
Ecology of the diatom Aulacoseira pusilla in oligotrophic mountain lakes, with implications for paleoclimate reconstructions |
title_sort |
ecology of the diatom aulacoseira pusilla in oligotrophic mountain lakes, with implications for paleoclimate reconstructions |
publisher |
Taylor & Francis Group |
publishDate |
2022 |
url |
https://doi.org/10.1080/15230430.2022.2071088 https://doaj.org/article/ea4e4b202fbd499184cd413e789360ed |
long_lat |
ENVELOPE(-129.182,-129.182,55.529,55.529) ENVELOPE(-112.122,-112.122,57.734,57.734) ENVELOPE(162.783,162.783,-74.233,-74.233) |
geographic |
Alpine Lake Arctic Clear Lake Meister |
geographic_facet |
Alpine Lake Arctic Clear Lake Meister |
genre |
Antarctic and Alpine Research Arctic Arctic |
genre_facet |
Antarctic and Alpine Research Arctic Arctic |
op_source |
Arctic, Antarctic, and Alpine Research, Vol 54, Iss 1, Pp 147-162 (2022) |
op_relation |
https://www.tandfonline.com/doi/10.1080/15230430.2022.2071088 https://doaj.org/toc/1523-0430 https://doaj.org/toc/1938-4246 doi:10.1080/15230430.2022.2071088 1938-4246 1523-0430 https://doaj.org/article/ea4e4b202fbd499184cd413e789360ed |
op_doi |
https://doi.org/10.1080/15230430.2022.2071088 |
container_title |
Arctic, Antarctic, and Alpine Research |
container_volume |
54 |
container_issue |
1 |
container_start_page |
147 |
op_container_end_page |
162 |
_version_ |
1766286973135224832 |