Dataset Overview

Raw nutrient data from Lake Erken at the Buoy site for 1991-2018. Data included are chla, secchi, TP, TN, DOC, NO2, SiO2, NH4, NO3, PO4. See QA QC Notes file. Pay attention to depths as some samples are from discrete depths and others are integrated. See Notes on how to acknowledge data provider.

See Full Dataset Documentation


Please see GEISHA Project home page on FEMC website at or see the GEISHA website hosted by INRAE at

Data Collection Status

Data collection for this dataset has been completed

Start date


End date



15529 records with 7 fields

Data Availability

Available for download

Data License

CC BY - Attribution license logo

Preferred Citation

Stockwell JD, Brentrup JA, Bruel R, Doubek JP, Urrutia-Cordero P, Pierson D (2021) Lake Erken raw nutrient data, 1991-2018. Global Evaluation of the Impacts of Storms on freshwater Habitat and structure of phytoplankton Assemblages (GEISHA) Working Group, FRB Centre for the Synthesis and Analysis of Biodiversity and USGS John Wesley Powell Center. Available online at:

Update Frequency

As needed

Maintenance Plan

Not provided


No links available for this dataset

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Previous Versions
    • Version 1 - V 1 (created 2020-08-06 by Jason Stockwell)