Freshwater grab sampling of streams in the Kwakshua Watersheds of Calvert and Hecate Islands, BC: 2013-2019

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This dataset contains the analytical results of freshwater biogeochemical samples collected on Calvert and Hecate Islands on the central coast of British Columbia, Canada, from April 2013 to December 2019. Samples were collected, approximately monthly, year round at the stream outlets of the seven largest watersheds, which are gauged as part of the Kwakshua Watersheds Observatory. The samples were analyzed for dissolved organic carbon (DOC) concentration and stable isotopes, particulate organic carbon and nitrogen (POC and PON) concentration and isotopes, dissolved organic matter (DOM) composition (via metrics of absorbance and fluorescence), total, dissolved, and inorganic nutrients, metals and major ions, water isotopes, and total suspended solids (TSS). Complimenting each water chemistry sample, we measured electrical conductivity, temperature, pH, oxidation reduction potential (ORP), and dissolved oxygen in-situ with a hand-held sensor.

Version 2.1.0
Data Steward Email
Data Collection Organization Hakai Institute
Data Upload Organization Hakai Institute
Progress Code onGoing
Maintenance Frequency Code asNeeded
Data source URL
Topic Category Code inlandWaters
Keywords Biogeochemistry, carbon, Calvert Island, watersheds, freshwater
Spatial Extent -128.121° 51.642°, -127.996° 51.691° (W S, E N)
Temporal Extent 2013-04-23 to 2019-11-27
Date Published
Alternate Formats FGP-HNAP ISO:19115-2 (XML) , W3C DCAT (XML) , W3C DCAT (JSON-LD)


Tank, S. E., Giesbrecht, I. J. W., Oliver, A. A., Pierre, K. A. St., Fedje, B., Myers, E., Quayle, L., Desmarais, I., McEwan, S., & Roberts, N. (2020). Biogeochemical Sampling of Streams in the Kwakshua Watersheds of Calvert and Hecate Islands, BC: 2013-2019. Version 1.0 [Data set]. Hakai Institute.

Funding Sources

Hakai Institute

Data Collection Information

From the Calvert Island field station, each stream was accessed by a short boat ride (~10 min). The field team was dropped on land and walked up-stream to the pre-established sampling location, above tidal influence. For most sample types, water was filtered streamside, using a 0.45 µm filter attached to a syringe. POC, PON, and TSS samples, however, were brought back to the laboratory, to be filtered via vaccum filtration, using a grade GF/F 0.7 µm filter. The samples were then preserved, according to the Hakai preservation protocol before being sent to external analytical laboratories for analysis. The absorbance and fluorescence samples as well as TSS samples were analyzed on site by Hakai technicians.

The physio-chemical parameters were measured directly at the sampling locations, using the YSI probe (Pro Plus Multiparameter Instrument)

Data Collection Processing

The resulting data were reviewed and flagged following our standard quality control (QC) procedures.

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.

API Access

curl -G --data-urlencode "\\$filter=DOI eq '10.25976/ndlp-wb06'" -H "x-api-key: PRIVATE-API-KEY"



Added cations data up until the end of 2019.

Schema v2.13.2
Digest SHA3-256:3a879ecc1a31185cb58fc5961c993ac09dea9ebb1660eca810040241f3c60ab9
File size 3.91 MB


Removed inorganic nitrogen data from UofA.

Schema v2.12.0
Digest SHA3-256:13bde58bd1f7aca73b85bdf7b3cd245176aae3592cfc0b627ceafee8cf92724f
File size 3.8 MB


Added nutrients data.

Schema v2.12.0
Digest SHA3-256:99b74658535a81ce8dd42b70abe9c307a4a4eb500e108d8a580d6a05a9e35a9e
File size 2.23 MB


Added Dissolved Oxygen data

Schema v2.7.0
Digest SHA3-256:b79d403c289a55a6e051201bb469d7d726a036d3acaf29c22487691984cc8d93
File size 272.23 KB


Added pH data

Schema v2.7.0
Digest SHA3-256:0cc44732c9481e868b0288acbf7d7005d3983c84d5f4a21284116ed8d601d4be
File size 257.96 KB


Added temperature data

Schema v2.7.0
Digest SHA3-256:5fdc26c9b5fe95b4b9108639865ec06982a2d64d4e18055fdfd719ee74bcbdac
File size 279.51 KB


Added ORP data

Schema v2.7.0
Digest SHA3-256:5bce7797dbb2d9463edd7a313930385c11ea423a2a78fa8078640f0ce48ed6ba
File size 291.58 KB


Added Specific conductivity data

Schema v2.7.0
Digest SHA3-256:349c9464fe5ac6317917f5f924675dbb69acbba5cda56db575d551fb3efcc6a1
File size 279.44 KB


initial submission

Schema v2.7.0
Digest SHA3-256:9be72320128ca75b9490b37a424dfb0eb690da6b34bd59cc025db53c4a38b560
File size 307.79 KB