Diefendorf, Aaron F; Dietrich, Watts; Naake, Hans H; Lowell, Thomas V; Corcoran, Megan C: Lake water sample chemistry [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.979618 (dataset in review), In: Diefendorf, AF et al.: Diatom-derived highly branched isoprenoids in lake waters and sediments [dataset bundled publication]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.979496 (dataset in review)
Abstract:
Diatom-derived highly branched isoprenoids (HBIs) are found extensively in marine sediments, but are observed in a limited number of lake sediments. To expand on this record, between 2022 and 2024, we collected lake surface sediment samples from 50 lakes in the United States of America from the Midwest and Northeast. Studied lakes capture a range in climate, water chemistry (e.g., pH, salinity, alkalinity), size, and trophic states. Lakes also vary in their diatom species compositions. Water was collected for water chemistry at three depths including the "surface" at 10 cm depth, an "integrated" surface sample, and "deep" water (2 m above sediment/water interface) when lake depth permitted. The integrated sample was designed to collect the water from the euphotic zone where phytoplankton are concentrated. Water was sampled from the euphotic zone (calculated as 2 times the Secchi disk depth) using an integrated water sampler fabricated from a 2 m long x 5.2 cm ID PVC pipe (2" nominal schedule 40 PVC pipe) fitted with a ball valve at the top. When the euphotic zone was >2 m, only the upper 2 m was sampled. When the euphotic zone intersected with the sediment/water interface, water was collected from the surface to 0.5 m above the sediment/water interface. Discrete water samples were collected at other depths using a horizontal water sampler. Water samples were analyzed for alkalinity, dissolved inorganic carbon (DIC) concentration, and DIC carbon isotopes.
Keyword(s):
Related to:
Diefendorf, Aaron F; Dietrich, Watts; Naake, Hans H; Corcoran, Megan C; Kmetz, Andrew J; Lowell, Thomas V; Schenk, Michael D; Wiles, Gregory; Wilson, Mark (submitted): Diatom-derived highly branched isoprenoids are diverse and widespread in lakes. Organic Geochemistry
Funding:
American Chemical Society (ACS), grant/award no. PRF-60163-ND2: Environmental and Thermal Controls on Diatom Highly Branched Isoprenoids for Oil-Source Rock Correlation
National Science Foundation (NSF), grant/award no. EAR-2039795: Collaborative Research: Tapping an unused biomarker for insights of past evaporation
Coverage:
Median Latitude: 44.498824 * Median Longitude: -77.069441 * South-bound Latitude: 40.680845 * West-bound Longitude: -99.749450 * North-bound Latitude: 48.096390 * East-bound Longitude: -67.419880
Date/Time Start: 2020-07-27T00:00:00 * Date/Time End: 2024-10-09T00:00:00
Minimum Elevation: 59.0 m * Maximum Elevation: 665.0 m
Event(s):
DIA-20-OH_Brown-1w (Brown Lake) * Latitude: 40.680845 * Longitude: -82.062333 * Date/Time: 2020-07-27T00:00:00 * Elevation: 290.0 m * Location: United States of America * Method/Device: Water sample (WS)
Parameter(s):
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1009 data points
Download Data (login required; moratorium until 2026-03-17)
Datasets with similar metadata
- Corcoran, MC; Diefendorf, AF; Wiesenberg, N et al. (in review): Hourly lake water temperate from six depths in Brown's Lake, Ohio. https://doi.pangaea.de/10.1594/PANGAEA.978091
- Corcoran, MC; Diefendorf, AF; Wiesenberg, N et al. (in review): Water chemistry depth profiles from Brown's Lake, Ohio. https://doi.pangaea.de/10.1594/PANGAEA.978099
- Corcoran, MC; Diefendorf, AF; Wiesenberg, N et al. (in review): Seasonal highly branched isoprenoid concentration and isotope data from Brown's Lake, Ohio. https://doi.pangaea.de/10.1594/PANGAEA.978103