Date (Creation)

2016-05-20

Purpose

To conduct a global meta-analysis of temporal trends in kelp community structure.

Status

On going

Topic category

• Biota

Maintenance and update frequency

As needed

Keywords (dataSource)

• Kelp Ecosystem Ecology Network (KEEN)

Keywords (Theme)

• kelp
• Study ID
• Study
• Site
• Latitude
• Longitude
• Maximum Depth
• Mean Depth
• Minimum Depth
• Trajectory ID
• Sample Size
• Sample Unit Size
• Year
• Period
• Raw Date
• Date from SAS
• Wet Kelp Biomass
• Kelp Stipe Density
• Kelp Individual Density
• Percent Cover
• Standard Deviation of Wet Kelp Biomass
• Standard Deviation of Kelp Stipe Density
• Standard Deviation of Kelp Individual Density
• Standard Deviation of Percent Cover
• Focal Kelp Measurement
• Standard Deviation in Focal Kelp Measurement
• Type of Focal Kelp Measurement
• Ecoregion
• Province
• Realm

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

Global Change Master Directory (GCMD) Earth Science Keywords Version 8.0

• EARTH SCIENCE | BIOSPHERE | AQUATIC ECOSYSTEMS | MARINE HABITAT
• EARTH SCIENCE | BIOSPHERE | AQUATIC ECOSYSTEMS | BENTHIC HABITAT
• EARTH SCIENCE | BIOSPHERE | AQUATIC ECOSYSTEMS | COASTAL HABITAT
• EARTH SCIENCE | BIOSPHERE | AQUATIC ECOSYSTEMS | DEMERSAL HABITAT
• EARTH SCIENCE | BIOLOGICAL CLASSIFICATION | PLANTS | MACROALGAE (SEAWEEDS)
• EARTH SCIENCE | BIOLOGICAL CLASSIFICATION | PLANTS | MACROALGAE (SEAWEEDS) | BROWN ALGAE

AODN Platform Vocabulary

• diver

AODN Discovery Parameter Vocabulary

• Abundance of biota

Language

English

Character encoding

UTF8

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

Distribution format

• CSV

OnLine resource

DATA ACCESS: aggregated data (direct download, CSV 3MB)

OnLine resource

DATA ACCESS: raw cleaned data (direct download, ZIP 7MB)

OnLine resource

TRB:TRB_KEEN_kelp_timeseries_aggregated_GV2

Global kelp timeseries [map]

OnLine resource

TRB:TRB_KEEN_kelp_timeseries_aggregated_GV

This OCG WFS service returns filtered geographic information for download in multiple formats, including CSV

OnLine resource

View, filter, and download this data collection using the TemperateReefBase Data Portal.

OnLine resource

Kelp Ecosystem Ecology Network (KEEN) website

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

Resource scope

Dataset

Title

ISO 19115-3:2018