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Title Sum-
Institution Dataset ID
     data   graph     files  public Epibenthic community percent cover in Aleutian Island kelp forests, June 2016 and July
2017 (Kelp Forest Ecosystem Engineer Loss project)
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The Dataset's Variables and Attributes

Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL access_formats String .htmlTable,.csv,.json,.mat,.nc,.tsv,.esriCsv,.geoJson
attribute NC_GLOBAL acquisition_description String Sampling locations were from the Aleutian Archipelago nearshore between
longitude 173.9 and -167.6 in June 2016 and July 2017. The average depth 17.5

To assess community structure at each site, two methods were used. First, to
quantify the remainder of the epibenthic community, ten 0.25 m2 quadrats were
haphazardly placed within each site. Within these quadrats, the percent bottom
cover was visually estimated for bare substrate, kelp holdfasts, suspension
feeders, pulvinate green algae (Codium spp.), and non-geniculate coralline
algae - with differentiation made between Clathromorphum spp. and other
encrusting coralline species.

Following visual estimation, all epibenthic organisms\u2014excepting those
strongly adhered to the substrate (e.g., barnacles, non-geniculate coralline
algae, etc.)\u2014 were scraped from the substrate and placed in fine mesh
collection bags for shipboard identification, and abundance and biomass
determination. Second, three 10 m x 2 m swaths were placed haphazardly within
each site. Within each swath, E. fistulosa stipes were counted, midwater and
demersal fishes visually quantified by trained divers, and all conspicuous,
sparsely distributed, large, mobile invertebrates (i.e., sea stars, crab, and
large gastropods with distributions assumed to be less than 1 per 2.5 m2, the
total area covered by the above quadrats) were collected in fine mesh bags for
shipboard abundance and biomass determination. Once onboard, organisms were
identified to the lowest possible taxa, counted (if the species occur as
discrete individuals) and weighed using hanging spring scales to determine
biomass to the nearest .005 kg. Ambiguous or difficult to identify individuals
were preserved in 10% formalin (for invertebrates) or pressed (for algae) for
later identification.
attribute NC_GLOBAL awards_0_award_nid String 709510
attribute NC_GLOBAL awards_0_award_number String OCE-1435205
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1435205 (external link)
attribute NC_GLOBAL awards_0_funder_name String NSF Division of Ocean Sciences
attribute NC_GLOBAL awards_0_funding_acronym String NSF OCE
attribute NC_GLOBAL awards_0_funding_source_nid String 355
attribute NC_GLOBAL awards_0_program_manager String Michael E. Sieracki
attribute NC_GLOBAL awards_0_program_manager_nid String 50446
attribute NC_GLOBAL awards_1_award_nid String 709515
attribute NC_GLOBAL awards_1_award_number String OCE-1435194
attribute NC_GLOBAL awards_1_data_url String http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1435194 (external link)
attribute NC_GLOBAL awards_1_funder_name String NSF Division of Ocean Sciences
attribute NC_GLOBAL awards_1_funding_acronym String NSF OCE
attribute NC_GLOBAL awards_1_funding_source_nid String 355
attribute NC_GLOBAL awards_1_program_manager String Michael E. Sieracki
attribute NC_GLOBAL awards_1_program_manager_nid String 50446
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL comment String Percent cover of epibenthic community
Aleutian Island kelp forest, 2016-2017
PI's: M. Edwards (SDSU), B. Konar, J. Metzger (UAF)
version: 2018-02-14
attribute NC_GLOBAL Conventions String COARDS, CF-1.6, ACDD-1.3
attribute NC_GLOBAL creator_email String info at bco-dmo.org
attribute NC_GLOBAL creator_name String BCO-DMO
attribute NC_GLOBAL creator_type String institution
attribute NC_GLOBAL creator_url String https://www.bco-dmo.org/ (external link)
attribute NC_GLOBAL data_source String extract_data_as_tsv version 2.3 19 Dec 2019
attribute NC_GLOBAL date_created String 2018-02-21T13:51:05Z
attribute NC_GLOBAL date_modified String 2019-12-11T17:24:09Z
attribute NC_GLOBAL defaultDataQuery String &time<now
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.728099.1
attribute NC_GLOBAL Easternmost_Easting double -167.62222
attribute NC_GLOBAL geospatial_lat_max double 53.39239
attribute NC_GLOBAL geospatial_lat_min double 51.40996
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -167.62222
attribute NC_GLOBAL geospatial_lon_min double -179.30663
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL infoUrl String https://www.bco-dmo.org/dataset/728099 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL instruments_0_acronym String Scale
attribute NC_GLOBAL instruments_0_dataset_instrument_description String Used to weigh specimens for biomass determination.
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 728108
attribute NC_GLOBAL instruments_0_description String An instrument used to measure weight or mass.
attribute NC_GLOBAL instruments_0_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/LAB13/ (external link)
attribute NC_GLOBAL instruments_0_instrument_name String Scale
attribute NC_GLOBAL instruments_0_instrument_nid String 714
attribute NC_GLOBAL instruments_0_supplied_name String hanging spring scales
attribute NC_GLOBAL keywords String bare, BareRock_cover, bco, bco-dmo, biological, chemical, clathromorphum, Clathromorphum_cover, codium, Codium_cover, corralline, cover, data, dataset, dmo, encrusting, Encrusting_Corralline_cover, erddap, feeders, habitat, holdfast, Holdfast_cover, island, latitude, longitude, management, oceanography, office, Other_cover, preliminary, quad, region, rock, sample, site, suspension, Suspension_Feeders_cover, year
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/728099/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/728099 (external link)
attribute NC_GLOBAL Northernmost_Northing double 53.39239
attribute NC_GLOBAL param_mapping String {'728099': {'Lat': 'flag - latitude', 'Long': 'flag - longitude'}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/728099/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String San Diego State University
attribute NC_GLOBAL people_0_affiliation_acronym String SDSU
attribute NC_GLOBAL people_0_person_name String Matthew Edwards
attribute NC_GLOBAL people_0_person_nid String 51390
attribute NC_GLOBAL people_0_role String Principal Investigator
attribute NC_GLOBAL people_0_role_type String originator
attribute NC_GLOBAL people_1_affiliation String University of Alaska Fairbanks
attribute NC_GLOBAL people_1_affiliation_acronym String UAF
attribute NC_GLOBAL people_1_person_name String Brenda Konar
attribute NC_GLOBAL people_1_person_nid String 51388
attribute NC_GLOBAL people_1_role String Co-Principal Investigator
attribute NC_GLOBAL people_1_role_type String originator
attribute NC_GLOBAL people_2_affiliation String University of Alaska Fairbanks
attribute NC_GLOBAL people_2_affiliation_acronym String UAF
attribute NC_GLOBAL people_2_person_name String Jacob R. Metzger
attribute NC_GLOBAL people_2_person_nid String 727068
attribute NC_GLOBAL people_2_role String Contact
attribute NC_GLOBAL people_2_role_type String related
attribute NC_GLOBAL people_3_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_3_affiliation_acronym String WHOI BCO-DMO
attribute NC_GLOBAL people_3_person_name String Nancy Copley
attribute NC_GLOBAL people_3_person_nid String 50396
attribute NC_GLOBAL people_3_role String BCO-DMO Data Manager
attribute NC_GLOBAL people_3_role_type String related
attribute NC_GLOBAL project String Kelp Forest Ecosystem Engineer Loss
attribute NC_GLOBAL projects_0_acronym String Kelp Forest Ecosystem Engineer Loss
attribute NC_GLOBAL projects_0_description String NSF abstract:
In many ecosystems the presence of a single dominant species can modify the physical conditions of the environment and alter patterns of biodiversity, nutrient cycling, and primary production. Losses of these "ecosystem engineers" can have profound impacts to how ecosystems function. Coastal kelps provide excellent examples of organisms whose structure modifies the physical characteristics of their habitats (light, nutrients, water motion) and supports enhanced biodiversity. The kelp forests in the coastal waters of the Aleutian Archipelago have suffered large-scale declines over the past several decades. This project will examine how these losses impact patterns of ecosystem production and biodiversity using a combination of techniques ranging from in situ benthic chambers and shipboard incubations to remote sensing using satellite imagery. The results will provide an understanding of how such events may impact this and other ecosystems. This project will support graduate students and will introduce the public to the Aleutian ecosystems in a series of videos. The investigators will also work with a San Diego high school teacher to integrate project findings into classroom activities, and they expect to involve a teacher in their field program.
The investigators will ask two highly integrated questions: 1) How do the widespread losses of kelp forests impact benthic productivity across the Aleutian Archipelago? 2) How do the widespread losses of kelp forests impact benthic biodiversity and community structure across the archipelago? To address these, the investigators will estimate changes to productivity at ten islands where they have historic data on seaweed community composition and estimates of kelp canopy cover. They will use in situ benthic chambers placed in both kelp forests and urchin barrens to measure plot-scale patterns of net ecosystem productivity (NEP), and shipboard incubations to examine net primary productivity (NPP) for the dominant macroalgae. Data for individual species rates of NPP will be scaled by their biomass and combined with in situ plot-scale benthic chamber experiments of whole communities to estimate NEP at the islands visited. These estimates will be scaled up to calculate NEP across the entire archipelago by first extrapolating results from the study sites to entire islands, and then across the archipelago. They will also estimate broad-scale patterns in production by characterizing water column irradiances across the archipelago and modeling NPP using species-level relationships between irradiance and photosynthesis. Coupling these with estimates of water column irradiance and community respiration will allow modeling of NEP across this region. Benthic biodiversity will be assessed using diver surveys and shipboard benthic trawls. Following these activities, satellite remote sensing of the kelp canopies dating back to the 1980s and the investigators' own historical data on benthic macroalgal abundances at these and other islands will be used to estimate the temporal and spatial patterns of change across the archipelago.
For more information see:
Project blog: http://sdsukelp.weebly.com/blog
Project website: http://www.uaf.edu/cfos/research/projects/collaborative-research--/
attribute NC_GLOBAL projects_0_end_date String 2018-08
attribute NC_GLOBAL projects_0_geolocation String Aleutian Islands Alaska (Attu Island to Unalaska)
attribute NC_GLOBAL projects_0_name String Collaborative Research: Changes in ecosystem production and benthic biodiversity following the widespread loss of an ecosystem engineer
attribute NC_GLOBAL projects_0_project_nid String 709511
attribute NC_GLOBAL projects_0_project_website String http://sdsukelp.weebly.com/blog (external link)
attribute NC_GLOBAL projects_0_start_date String 2015-09
attribute NC_GLOBAL publisher_name String Biological and Chemical Oceanographic Data Management Office (BCO-DMO)
attribute NC_GLOBAL publisher_type String institution
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL Southernmost_Northing double 51.40996
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL summary String Epibenthic community percent cover in Aleutian Island kelp forests, June 2016 and July 2017
attribute NC_GLOBAL title String Epibenthic community percent cover in Aleutian Island kelp forests, June 2016 and July 2017 (Kelp Forest Ecosystem Engineer Loss project)
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL Westernmost_Easting double -179.30663
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.3
variable Island   String  
attribute Island bcodmo_name String site
attribute Island description String island name
attribute Island long_name String Island
attribute Island units String unitless
variable Habitat   String  
attribute Habitat bcodmo_name String site
attribute Habitat description String type of habitat: kelp; barren; transition
attribute Habitat long_name String Habitat
attribute Habitat units String unitless
variable Region   String  
attribute Region bcodmo_name String region
attribute Region description String East-west sampling region
attribute Region long_name String Region
attribute Region units String unitless
variable Year   short  
attribute Year _FillValue short 32767
attribute Year actual_range short 2016, 2017
attribute Year bcodmo_name String year
attribute Year description String sampling year
attribute Year long_name String Year
attribute Year nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/YEARXXXX/ (external link)
attribute Year units String unitless
variable Site   String  
attribute Site bcodmo_name String site
attribute Site description String sampling site identifer
attribute Site long_name String Site
attribute Site units String unitless
variable latitude   double  
attribute latitude _CoordinateAxisType String Lat
attribute latitude _FillValue double NaN
attribute latitude actual_range double 51.40996, 53.39239
attribute latitude axis String Y
attribute latitude bcodmo_name String latitude
attribute latitude colorBarMaximum double 90.0
attribute latitude colorBarMinimum double -90.0
attribute latitude description String latitude; north is positive
attribute latitude ioos_category String Location
attribute latitude long_name String Latitude
attribute latitude nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/LATX/ (external link)
attribute latitude standard_name String latitude
attribute latitude units String degrees_north
variable longitude   double  
attribute longitude _CoordinateAxisType String Lon
attribute longitude _FillValue double NaN
attribute longitude actual_range double -179.30663, -167.62222
attribute longitude axis String X
attribute longitude bcodmo_name String longitude
attribute longitude colorBarMaximum double 180.0
attribute longitude colorBarMinimum double -180.0
attribute longitude description String longitude; east is positive
attribute longitude ioos_category String Location
attribute longitude long_name String Longitude
attribute longitude nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/LONX/ (external link)
attribute longitude source_name String Long
attribute longitude standard_name String longitude
attribute longitude units String degrees_east
variable Quad   byte  
attribute Quad _FillValue byte 127
attribute Quad actual_range byte 1, 20
attribute Quad bcodmo_name String sample
attribute Quad description String quadrat identifier
attribute Quad long_name String Quad
attribute Quad nerc_identifier String https://vocab.nerc.ac.uk/collection/P02/current/ACYC/ (external link)
attribute Quad units String unitless
variable sample   String  
attribute sample bcodmo_name String sample
attribute sample description String samplerat identifier
attribute sample long_name String Sample
attribute sample nerc_identifier String https://vocab.nerc.ac.uk/collection/P02/current/ACYC/ (external link)
attribute sample units String unitless
variable Holdfast_cover   byte  
attribute Holdfast_cover _FillValue byte 127
attribute Holdfast_cover actual_range byte 0, 80
attribute Holdfast_cover bcodmo_name String cover_pcent
attribute Holdfast_cover description String percent cover of holdfasts
attribute Holdfast_cover long_name String Holdfast Cover
attribute Holdfast_cover units String unitless
variable Suspension_Feeders_cover   byte  
attribute Suspension_Feeders_cover _FillValue byte 127
attribute Suspension_Feeders_cover actual_range byte 0, 90
attribute Suspension_Feeders_cover bcodmo_name String cover_pcent
attribute Suspension_Feeders_cover description String percent cover of suspension_feeders
attribute Suspension_Feeders_cover long_name String Suspension Feeders Cover
attribute Suspension_Feeders_cover units String unitless
variable Encrusting_Corralline_cover   byte  
attribute Encrusting_Corralline_cover _FillValue byte 127
attribute Encrusting_Corralline_cover actual_range byte 0, 98
attribute Encrusting_Corralline_cover bcodmo_name String cover_pcent
attribute Encrusting_Corralline_cover description String percent cover of encrusting coralline organisms
attribute Encrusting_Corralline_cover long_name String Encrusting Corralline Cover
attribute Encrusting_Corralline_cover units String unitless
variable Clathromorphum_cover   byte  
attribute Clathromorphum_cover _FillValue byte 127
attribute Clathromorphum_cover actual_range byte 0, 98
attribute Clathromorphum_cover bcodmo_name String cover_pcent
attribute Clathromorphum_cover description String percent cover of Clathromorphum
attribute Clathromorphum_cover long_name String Clathromorphum Cover
attribute Clathromorphum_cover units String unitless
variable BareRock_cover   double  
attribute BareRock_cover _FillValue double NaN
attribute BareRock_cover actual_range double 0.0, 96.0
attribute BareRock_cover bcodmo_name String cover_pcent
attribute BareRock_cover description String percent cover of bare rock
attribute BareRock_cover long_name String Bare Rock Cover
attribute BareRock_cover units String unitless
variable Codium_cover   double  
attribute Codium_cover _FillValue double NaN
attribute Codium_cover actual_range double 0.0, 70.0
attribute Codium_cover bcodmo_name String cover_pcent
attribute Codium_cover description String percent cover of Codium
attribute Codium_cover long_name String Codium Cover
attribute Codium_cover units String unitless
variable Other_cover   byte  
attribute Other_cover _FillValue byte 127
attribute Other_cover actual_range byte 0, 100
attribute Other_cover bcodmo_name String cover_pcent
attribute Other_cover description String percent cover of other categories
attribute Other_cover long_name String Other Cover
attribute Other_cover units String unitless

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.

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