Physical characteristics and chemical measurements of northern lakes in western Canada ...
Northern lakes disproportionately influence the global carbon cycle and may do so more in the future depending on how their microbial communities respond to climate warming. Microbial communities can change because of the direct effects of climate warming on their metabolism and the indirect effects...
| Main Authors: | , , , , , |
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| Format: | Dataset |
| Language: | English |
| Published: |
Dryad
2023
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.5061/dryad.sj3tx968t https://datadryad.org/stash/dataset/doi:10.5061/dryad.sj3tx968t |
| Summary: | Northern lakes disproportionately influence the global carbon cycle and may do so more in the future depending on how their microbial communities respond to climate warming. Microbial communities can change because of the direct effects of climate warming on their metabolism and the indirect effects of climate warming on groundwater connectivity from thawing of surrounding permafrost, especially at lower landscape positions. Here we used shotgun metagenomics to compare the taxonomic and functional gene composition of sediment microbes in 19 peatland lakes across a 1600-km permafrost transect in boreal western Canada. We found microbes responded differently to the loss of regional permafrost cover than to increases in local groundwater connectivity. These results suggest that both the direct and indirect effects of climate warming, which were respectively associated with loss of permafrost thaw and subsequent changes in groundwater connectivity, interact to change microbial composition and function. Archaeal ... : This table contains seasonal and daily field and laboratory data for samples collected from 19 lakes in Alberta and the Northwest Territories between 2018 and 2019. General information includes lake name, permafrost region, location coordinates, size and depth. Meteorological information includes mean annual precipitation, mean annual air temperature, precipitation and pressure. Chemical measurements are the average of measurements taken over the entire 2018–19 sampling period. Daily measurements for specific conductivity (COND) are also reported. Chemical parameters measured were: water temperature, dissolved oxygen, specific conductivity, pH, dissolved organic carbon, total nitrogen, ions (Na, Mg, K, Ca, Mn, Fe, Cu, Zn, P, S, NH4, NO3 Cl, PO4, SO4), chlorophyll A. Further information regarding units and descriptions of each parameter can be found under the “Sample Information” tab in the spreadsheet. ... |
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