IMAS Metadata Catalogue
Global Kelp Timeseries from NCEAS/KEEN Working Group
This global meta-analysis documents seasonal and interannual variability in the structure of reef-based kelp dominated communities. Temporal trends in kelp biomass, stipe density, percent cover, and rates of change of kelp density are measured across various ecoregions in global temperate zones.
Data is supplied in two formats:
(1) raw long table = taxon-level observations
(2) aggregated table = site/date-level time series, with taxa collapsed into a focalKelp metric
Simple
Identification info
- Date (Creation)
- 2016-05-20
Principal investigator
Principal investigator
Principal investigator
Principal investigator
Principal investigator
- Purpose
- To conduct a global meta-analysis of temporal trends in kelp community structure.
- Status
- On going
Point of contact
Point of contact
- Topic category
-
- Biota
Extent
N
S
E
W
))
Temporal extent
- Time period
- 1952-01-01
Vertical element
- Minimum value
- 3
- Maximum value
- 50
- Identifier
- EPSG::5715
- Name
- MSL depth
- Maintenance and update frequency
- As needed
Resource format
- Title
- CSV
- Date
- Keywords (Project)
-
- Kelp Ecosystem Ecology Network (KEEN)
- Keywords (Theme)
-
- kelp
- timeseries
- data synthesis
- Keywords (Taxon)
-
- Laminariales
- Ecklonia maxima
- Agarum clathrus
- Pleurophycus gardneri
- Nereocystis luetkeana
- Macrocystis pyrifera
- Laminaria yezoensis
- Saccharina longicruris
- Laminaria inclinatorhiza
- Laminaria religiosa
- Lessoniopsis littoralis
- Agarum fimbriatum
- Dictyoneurum californicum
- Ecklonia arborea
- Laminaria farlowii
- Egregia menziesii
- Laminaria setchellii
- Pterygophora californica
- Saccharina groenlandica
- Laminaria pallida
- Alaria marginata
- Costaria costata
- Laminaria bongardiana
- Lessonia variegata
- Laminaria digitata
- Laminaria hyperborea
- Laminaria ochroleuca
- Alaria esculenta
- Saccharina latissima
- Laminaria solidungula
- Ecklonia radiata
- Lessonia corrugata
- Undaria pinnatifida
- Lessonia trabeculata
- Agarum clathratum
- Cymathaere triplicata
- Eualaria fistulosa
- Laminaria longipes
- NASA/GCMD Keywords, Version 8.5
Resource constraints
- Classification
- Unclassified
Resource constraints
- Linkage
-
http://i.creativecommons.org/l/by/4.0/88x31.png
License Graphic
- Title
- Creative Commons Attribution 4.0 International License
- Website
-
http://creativecommons.org/licenses/by/4.0/
License Text
- Other constraints
- Cite data as: Rassweiler, A., Novak, M., Okamoto, D., Byrnes, J., Krumhansl, K. (2016). Global Kelp Timeseries from NCEAS/KEEN Working Group. Florida State University, Oregon State University, Simon Fraser University, University of Massachusetts Boston. Data accessed at https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/ecbe5cc3-3fbf-4569-b5e8-07c2201fcb9c on [access date].
- Other constraints
- If you have kelp timeseries greater than 3 years in length, please consider contributing to the data set. Contact Jarrett Byrnes for details.
- Language
- English
- Character encoding
- UTF8
Content Information
- Content type
- Physical measurement
- Description
- Integer identifying study
- Name
- Study ID
- Name
- study_ID
- Name
- Integer
- Description
- Short name for study
- Name
- Study
- Name
- Study
- Name
- String
- Description
- Within-study name for a single site
- Name
- Site
- Name
- Site
- Name
- String
- Description
- Latitude in decimal degrees
- Name
- Latitude
- Name
- Latitude
- Name
- Decimal Degrees
- Description
- Longitude in decimal degrees
- Name
- Longitude
- Name
- Longitude
- Name
- Decimal Degrees
- Description
- Maximum depth (m) reported for a site during a single sample event.
- Name
- Maximum Depth
- Name
- max_Depth
- Name
- Meters
- Description
- Average depth (m) reported for a site during a single sample event.
- Name
- Mean Depth
- Name
- mean_Depth
- Name
- Meters
- Description
- Minimum depth (m) reported for a site during a single sample event.
- Name
- Minimum Depth
- Name
- min_Depth
- Name
- Meters
- Description
- Integer identifying a unique time-series. A unique timeseries follows a single site within a single study using a single method of measuring kelp over time.
- Name
- Trajectory ID
- Name
- trajectory_ID
- Name
- Integer
- Description
- The number of replicates that went into calculating a site-level average kelp abundance.
- Name
- Sample Size
- Name
- sample_size
- Name
- Number of Replicates
- Description
- The size of an individual unit used to sample kelp (m).
- Name
- Sample Unit Size
- Name
- sample_unit_size_sq_m
- Name
- Meters
- Description
- The year a sample was taken.
- Name
- Year
- Name
- year
- Name
- Year
- Description
- Integer denoting the order of samples within a trajectory.
- Name
- Period
- Name
- period
- Name
- Integer
- Description
- Days since January 1, 1960 on the date of sampling.
- Name
- Raw Date
- Name
- rawDate
- Name
- Days
- Description
- Date in yyyy-mm-dd format
- Name
- Date from SAS
- Name
- sasDate
- Name
- Date
- Description
- Average biomass of kelp in kg of wet weight per square meter.
- Name
- Wet Kelp Biomass
- Name
- biomass_KG_wet_per_sq_m
- Name
- Kilograms per square meter
- Description
- Average density of kelp stipes per square meter.
- Name
- Kelp Stipe Density
- Name
- Stipe_Density_num_per_sq_m
- Name
- Number per Square Meter
- Description
- Average number of individual kelps per square meter.
- Name
- Kelp Individual Density
- Name
- individual_per_sq_m
- Name
- Number per Square meter
- Description
- Average percent cover of kelp.
- Name
- Percent Cover
- Name
- percent_cover
- Identifier
- http://vocab.nerc.ac.uk/collection/P06/current/UPCT
- Name
- Percent
- Description
- Standard deviation of biomass of kelp in kg of wet weight per square meter.
- Name
- Standard Deviation of Wet Kelp Biomass
- Name
- biomass_KG_wet_per_sq_m_STD
- Name
- Kilograms per Square Meter
- Description
- Standard deviation of density of kelp stipes per square meter.
- Name
- Standard Deviation of Kelp Stipe Density
- Name
- Stipe_Density_num_per_sq_m_STD
- Identifier
- http://vocab.nerc.ac.uk/collection/P06/current/UPMS
- Name
- Number per square metre
- Description
- Standard deviation of number of individual kelps per square meter.
- Name
- Standard Deviation of Kelp Individual Density
- Name
- individual_per_sq_m_STD
- Identifier
- http://vocab.nerc.ac.uk/collection/P06/current/UPMS
- Name
- Number per square metre
- Description
- Standard deviation in percent cover of kelp.
- Name
- Standard Deviation of Percent Cover
- Name
- percent_cover_STD
- Identifier
- http://vocab.nerc.ac.uk/collection/P06/current/UPCT
- Name
- Percent
- Description
- Average abundance of kelp using preferred focal unit.
- Name
- Focal Kelp Measurement
- Name
- focalKelp
- Name
- varies
- Description
- Standard deviation of kelp using preferred focal unit.
- Name
- Standard Deviation in Focal Kelp Measurement
- Name
- focalKelp_STD
- Name
- varies
- Description
- Preferred focal unity type of the four assessed. When multiple measurement types were equivalent, we selected one in order of the following preference: biomass, stipe density, individual density, percent cover - this corresponds to getting as close as possible to kelp biomass. The numbers corresponding to different measurement types are 1) percent cover, 2) kelp individuals per sq. m, 3) kelp stipes per sq m, 4) kg wet mass per sq m.
- Name
- Type of Focal Kelp Measurement
- Name
- focalUnit
- Name
- Integer
- Description
- Ecoregion of site taken from Spalding et al.’s 2008 Marine Ecoregions of the World.
- Name
- Ecoregion
- Name
- ECOREGION
- Name
- String
- Description
- Province of site taken from Spalding et al.’s 2008 Marine Ecoregions of the World.
- Name
- Province
- Name
- PROVINCE
- Name
- String
- Description
- Realm of site taken from Spalding et al.’s 2008 Marine Ecoregions of the World.
- Name
- Realm
- Name
- REALM
- Name
- String
Identifier
- Code
- Abundance of biota
Distribution Information
- Distribution format
-
- CSV
- OnLine resource
- DATA ACCESS: Global kelp timeseries - aggregated by site x time [CSV direct download]
- OnLine resource
-
TRB_KEEN_kelp_timeseries_aggregated
MAP - Global kelp timeseries - aggregated
- OnLine resource
-
TRB_KEEN_kelp_timeseries_raw
This OCG WFS service returns the data for download in multiple formats.
- OnLine resource
-
TRB_KEEN_kelp_timeseries_aggregated
This OCG WFS service returns the data for download in multiple formats.
- OnLine resource
- Kelp Ecosystem Ecology Network (KEEN) website
Resource lineage
- Statement
- Surveys of kelp biomass, stipe density, percent cover, and rates of change of kelp density were measured across various ecoregions in studies monitoring short (intra-annual) to long-term (interannual) variability in community structure. Studies currently in the collection span the temporal range 1952 to 2014. Sampling was conducted across 38 different ecoregions spanning 17 provinces and 6 realms (classified according to Spalding et al.’s 2008 Marine Ecoregions of the World).
- Hierarchy level
- Dataset
- Hierarchy level
- Dataset
Platform
Identifier
- Code
- diver
Metadata
- Metadata identifier
- urn:uuid/ecbe5cc3-3fbf-4569-b5e8-07c2201fcb9c
- Language
- English
- Character encoding
- UTF8
Point of contact
Type of resource
- Resource scope
- Dataset
- Metadata linkage
-
https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/ecbe5cc3-3fbf-4569-b5e8-07c2201fcb9c
Point of truth URL of this metadata record
- Date info (Creation)
- 2019-08-13T14:09:58
- Date info (Revision)
- 2026-06-02T12:54:24
Metadata standard
- Title
- ISO 19115-3:2018
Overviews
Kelp Ecosystem Ecology Network logo
Spatial extent
N
S
E
W
Provided by
Associated resources
Not available