Climatic variability as a principal driver of primary production in the southernmost subalpine Rocky Mountain lake
ABSTRACTMountain lakes are sensitive indicators of anthropogenically driven global change, with lake sediment records documenting increased primary production during the twentieth century. Atmospheric nutrient deposition and warming have been attributed to changes in other Western mountain lakes, ho...
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ftdoajarticles:oai:doaj.org/article:4687c598134a46a49b21b54f46722549 2024-09-15T17:49:02+00:00 Climatic variability as a principal driver of primary production in the southernmost subalpine Rocky Mountain lake Anna Shampain Jill S. Baron Peter R. Leavitt Sarah A. Spaulding 2024-12-01T00:00:00Z https://doi.org/10.1080/15230430.2024.2303810 https://doaj.org/article/4687c598134a46a49b21b54f46722549 EN eng Taylor & Francis Group https://www.tandfonline.com/doi/10.1080/15230430.2024.2303810 https://doaj.org/toc/1523-0430 https://doaj.org/toc/1938-4246 doi:10.1080/15230430.2024.2303810 1938-4246 1523-0430 https://doaj.org/article/4687c598134a46a49b21b54f46722549 Arctic, Antarctic, and Alpine Research, Vol 56, Iss 1 (2024) Rocky Mountains subalpine lake mountain lakes climate fossil pigments stable isotopes Environmental sciences GE1-350 Ecology QH540-549.5 article 2024 ftdoajarticles https://doi.org/10.1080/15230430.2024.2303810 2024-08-05T17:49:49Z ABSTRACTMountain lakes are sensitive indicators of anthropogenically driven global change, with lake sediment records documenting increased primary production during the twentieth century. Atmospheric nutrient deposition and warming have been attributed to changes in other Western mountain lakes, however, the intensity of these drivers varies. We analyzed a sediment core representing a 270-year record from Santa Fe Lake, New Mexico, to constrain the southern margin of Rocky Mountain lakes and quantify patterns of change in lake biogeochemistry, production, and diatoms since 1750. Lake sediments were dated using 210Pb and analyzed for carbon (C), nitrogen (N), stable isotopes (δ13C, δ15N), diatoms, and phototrophic pigments. The abundance of cyanobacteria, purple sulfur-reducing bacteria, and diatom pigments were elevated during the stable conditions of the Little Ice Age; these phototrophic groups declined in the late 1800s and reached a minimum by 1950. From 1950 to 2020, sediments recorded an increased abundance of cryptophyte, diatom, and chlorophyte groups. The C and N (percentage dry mass) increased after 1950, whereas δ15N and δ13C values declined. Changes since the mid-twentieth century are contemporaneous with warming trends in the Southwest and modest deposition of atmospheric N. Our findings highlight the geographic variability of mountain lake responses to changing environmental conditions. Article in Journal/Newspaper Antarctic and Alpine Research Arctic Directory of Open Access Journals: DOAJ Articles Arctic, Antarctic, and Alpine Research 56 1 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Rocky Mountains subalpine lake mountain lakes climate fossil pigments stable isotopes Environmental sciences GE1-350 Ecology QH540-549.5 |
spellingShingle |
Rocky Mountains subalpine lake mountain lakes climate fossil pigments stable isotopes Environmental sciences GE1-350 Ecology QH540-549.5 Anna Shampain Jill S. Baron Peter R. Leavitt Sarah A. Spaulding Climatic variability as a principal driver of primary production in the southernmost subalpine Rocky Mountain lake |
topic_facet |
Rocky Mountains subalpine lake mountain lakes climate fossil pigments stable isotopes Environmental sciences GE1-350 Ecology QH540-549.5 |
description |
ABSTRACTMountain lakes are sensitive indicators of anthropogenically driven global change, with lake sediment records documenting increased primary production during the twentieth century. Atmospheric nutrient deposition and warming have been attributed to changes in other Western mountain lakes, however, the intensity of these drivers varies. We analyzed a sediment core representing a 270-year record from Santa Fe Lake, New Mexico, to constrain the southern margin of Rocky Mountain lakes and quantify patterns of change in lake biogeochemistry, production, and diatoms since 1750. Lake sediments were dated using 210Pb and analyzed for carbon (C), nitrogen (N), stable isotopes (δ13C, δ15N), diatoms, and phototrophic pigments. The abundance of cyanobacteria, purple sulfur-reducing bacteria, and diatom pigments were elevated during the stable conditions of the Little Ice Age; these phototrophic groups declined in the late 1800s and reached a minimum by 1950. From 1950 to 2020, sediments recorded an increased abundance of cryptophyte, diatom, and chlorophyte groups. The C and N (percentage dry mass) increased after 1950, whereas δ15N and δ13C values declined. Changes since the mid-twentieth century are contemporaneous with warming trends in the Southwest and modest deposition of atmospheric N. Our findings highlight the geographic variability of mountain lake responses to changing environmental conditions. |
format |
Article in Journal/Newspaper |
author |
Anna Shampain Jill S. Baron Peter R. Leavitt Sarah A. Spaulding |
author_facet |
Anna Shampain Jill S. Baron Peter R. Leavitt Sarah A. Spaulding |
author_sort |
Anna Shampain |
title |
Climatic variability as a principal driver of primary production in the southernmost subalpine Rocky Mountain lake |
title_short |
Climatic variability as a principal driver of primary production in the southernmost subalpine Rocky Mountain lake |
title_full |
Climatic variability as a principal driver of primary production in the southernmost subalpine Rocky Mountain lake |
title_fullStr |
Climatic variability as a principal driver of primary production in the southernmost subalpine Rocky Mountain lake |
title_full_unstemmed |
Climatic variability as a principal driver of primary production in the southernmost subalpine Rocky Mountain lake |
title_sort |
climatic variability as a principal driver of primary production in the southernmost subalpine rocky mountain lake |
publisher |
Taylor & Francis Group |
publishDate |
2024 |
url |
https://doi.org/10.1080/15230430.2024.2303810 https://doaj.org/article/4687c598134a46a49b21b54f46722549 |
genre |
Antarctic and Alpine Research Arctic |
genre_facet |
Antarctic and Alpine Research Arctic |
op_source |
Arctic, Antarctic, and Alpine Research, Vol 56, Iss 1 (2024) |
op_relation |
https://www.tandfonline.com/doi/10.1080/15230430.2024.2303810 https://doaj.org/toc/1523-0430 https://doaj.org/toc/1938-4246 doi:10.1080/15230430.2024.2303810 1938-4246 1523-0430 https://doaj.org/article/4687c598134a46a49b21b54f46722549 |
op_doi |
https://doi.org/10.1080/15230430.2024.2303810 |
container_title |
Arctic, Antarctic, and Alpine Research |
container_volume |
56 |
container_issue |
1 |
_version_ |
1810290744839110656 |