LakePulse

The LakePulse Network performed a lake health assessment at the canadian scale. Launched in 2016 thanks to the funding of the NSERC (Natural Sciences and Engineering Research Council of Canada) Strategic Partnership Program for Networks, LakePulse is an academic-government partnership that brings together 17 academic researchers from 13 Canadian universities, as well as eight provincial governments and two federal departments. Research interests were grouped under four research themes, with two to four projects within each theme. Approaches used in LakePulse include traditional, state-of-the-art and innovative methods in genomics, emerging contaminants, greenhouse gases, invasive pathogens, paleolimnology, spatial modelling, statistical analyses and remote sensing to answer the following main questions:

- How healthy are Canadian lakes?
- Is lake degradation widespread in Canada or worse in certain regions?
- Is lake health getting better, worse, or stable through time?
- How does land use and climate change affect lake health?

Citation

LakePulse. 2023-07-21. "LakePulse" (dataset). 1.0.0. DataStream. https://doi.org/10.25976/sd85-ov48.

Funding Sources

Natural Sciences and Engineering Research Council of Canada (NSERC)

Data Collection Information

Many water quality variables were sampled. Most variables are sampled at each lake, while a few are sampled in half of the lakes, or some other fraction. Water samples were collected as an integrated sample from the photic zone (estimated as two times the secchi depth, to a maximum of 2 m), as a subsurface samples (~10 to 30 cm deep), in the littoral zone (within 10 m from shore) and from the hypolimnion (1 m above water-sediment interface in stratified lakes). Sediment cores are retrieved from the deepest point of the lake. Some measurements are also taken in-situ using a multiparameter sonde, as well as some team-specific optical instruments. Refer to Huot et al., 2019 for information about the variables selected and to the sampling manual for more details about the sampling protocols :

https://doi.org/10.1016/j.scitotenv.2019.133668
https://doi.org/10.17118/11143/18662

Data Processing

- The following variables are provided as averages of 3 replicates: Oxygen Delta 18; Total suspended solids
- The following variables are provided as averages of 2 replicates: Ammonia and ammonium; Chlorophyll a, corrected for pheophytin; Chlorophyll b; Inorganic carbon; Nitrate; Organic carbon; Organic phosphorus; Pheophytin a; Soluble Reactive Phosphorus (SRP); Total Nitrogen, mixed forms; Total Phosphorus, mixed forms
- The following variables are a single measurement: Absorbance, Calcium, Chloride; Depth, Secchi disk depth; Magnesium; Microcystin; Potassium; Sodium, Sulfate
- The following measurements are averaged over a portion of a vertical profile: Dissolved oxygen (DO); Specific conductance; Temperature, water; pH

Full data processing methodology for each variable is available in the zip file attached (click on ATTACHMENTS).

Attribution Licence (ODC-By) v1.0

You are free to share, copy, distribute, use, modify, transform, build upon, and produce works from the data as long as you attribute any public use of the data, or works produced from the data, in the manner specified in the licence. For any use or redistribution of the data, or works produced from it, you must make clear to others the licence of the data and keep intact any notices on the original data. https://opendatacommons.org/licenses/by/1-0/

API Access

curl -G https://api.datastream.org/v1/odata/v4/Records --data-urlencode "\\$filter=DOI eq '10.25976/sd85-ov48'" -H "x-api-key: PRIVATE-API-KEY"

Changelog