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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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2022-12-01
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| Series: | Arctic, Antarctic, and Alpine Research |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/15230430.2022.2071088 |
| _version_ | 1828222384548610048 |
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| author | Edna Luz Pedraza Garzon Jasmine E. Saros |
| author_facet | Edna Luz Pedraza Garzon Jasmine E. Saros |
| author_sort | Edna Luz Pedraza Garzon |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-04-12T16:54:13Z |
| format | Article |
| id | doaj.art-ea4e4b202fbd499184cd413e789360ed |
| institution | Directory Open Access Journal |
| issn | 1523-0430 1938-4246 |
| language | English |
| last_indexed | 2024-04-12T16:54:13Z |
| publishDate | 2022-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Arctic, Antarctic, and Alpine Research |
| spelling | doaj.art-ea4e4b202fbd499184cd413e789360ed2022-12-22T03:24:18ZengTaylor & Francis GroupArctic, Antarctic, and Alpine Research1523-04301938-42462022-12-0154114716210.1080/15230430.2022.2071088Ecology of the diatom Aulacoseira pusilla in oligotrophic mountain lakes, with implications for paleoclimate reconstructionsEdna Luz Pedraza Garzon0Jasmine E. Saros1Climate Change Institute, University of Maine, Orono, Maine, USAClimate Change Institute, University of Maine, Orono, Maine, USADiatoms 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.https://www.tandfonline.com/doi/10.1080/15230430.2022.2071088Aulacoseira pusillalightalpinelake thermal structurediatom autoecology |
| spellingShingle | Edna Luz Pedraza Garzon Jasmine E. Saros Ecology of the diatom Aulacoseira pusilla in oligotrophic mountain lakes, with implications for paleoclimate reconstructions Arctic, Antarctic, and Alpine Research Aulacoseira pusilla light alpine lake thermal structure diatom autoecology |
| title | 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_short | 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 |
| topic | Aulacoseira pusilla light alpine lake thermal structure diatom autoecology |
| url | https://www.tandfonline.com/doi/10.1080/15230430.2022.2071088 |
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