Diefendorf, Aaron F; Dietrich, Watts; Naake, Hans H; Lowell, Thomas V; Corcoran, Megan C (2025): Lake water Secchi disk depth [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.979646 (DOI registration in progress), In: Diefendorf, AF et al. (2025): Diatom-derived highly branched isoprenoids in lake waters and sediments [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.979496
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Published: 2025-04-14
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. As part of this survey, we measured Secchi disk depth using a 30 cm diameter black and white disc. Weather conditions and time of day were variable and therefore these values should be considered minimum values.
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 A (2025): Diatom-derived highly branched isoprenoids are diverse and widespread in lakes. Organic Geochemistry, 104993, https://doi.org/10.1016/j.orggeochem.2025.104993
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: 44.519453 * Median Longitude: -81.492735 * South-bound Latitude: 40.680845 * West-bound Longitude: -99.749450 * North-bound Latitude: 48.096390 * East-bound Longitude: -67.419880
Date/Time Start: 2022-05-25T14:45:00 * Date/Time End: 2023-05-14T13:40:00
Minimum ELEVATION: 58.8 m a.s.l. * Maximum ELEVATION: 665.0 m a.s.l.
Event(s):
DIA-22-IN_Martin-1sd (Martin Lake) * Latitude: 41.564270 * Longitude: -85.384750 * Date/Time: 2022-05-26T09:45:00 * Elevation: 276.0 m * Location: United States of America * Method/Device: Secchi disk (SD)
DIA-22-IN_Martin-2sd (Martin Lake) * Latitude: 41.564360 * Longitude: -85.385030 * Date/Time: 2022-09-17T10:00:00 * Elevation: 276.0 m * Location: United States of America * Method/Device: Secchi disk (SD)
DIA-22-IN_Olin-1sd (Olin Lake) * Latitude: 41.561040 * Longitude: -85.390420 * Date/Time: 2022-05-26T16:30:00 * Elevation: 276.0 m * Location: United States of America * Method/Device: Secchi disk (SD)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Diefendorf, Aaron F | |||
| 2 | LATITUDE | Latitude | Diefendorf, Aaron F | Geocode | ||
| 3 | LONGITUDE | Longitude | Diefendorf, Aaron F | Geocode | ||
| 4 | ELEVATION | Elevation | m a.s.l. | Diefendorf, Aaron F | Geocode | |
| 5 | DATE/TIME | Date/Time | Diefendorf, Aaron F | Geocode | ||
| 6 | Depth of Secchi Disk | z(SD) | m | Diefendorf, Aaron F | Secchi disc |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
65 data points