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Title Sum-
Institution Dataset ID
   set  data   graph     files  public Rock wall manipulation experiment conducted in Bodega Bay, CA from 2010-2011    ?     I   M   background (external link) RSS Subscribe BCO-DMO bcodmo_dataset_641692

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 The experiment was conducted on a vertical rock wall in the mid-high
intertidal zone of Bodega Marine Reserve, Bodega Bay, CA, USA. Grazer
diversity and substrate heterogeneity were factorially manipulated in 20cm x
20cm plots. Grazers were manipulated via direct removals from plots in order
to generate monocultures of each of three gastropod taxa, the limpets, Lottia
digitalis and Lottia scabra, and the snails Littorina spp. (L. plena and L.
scutulata), along with an unmanipulated polyculture with all three gastropod
grazers. Substrate heterogeneity was manipulated by scraping barnacle covered
areas from the rock surface. Three barnacle treatments were used: two
homogeneous treatments (full = no barnacle removal, none = all barnacles
removed) and one heterogeneous treatment (half = barnacles removed from one
half of plot but left intact on the other half). Grazer and substrate
treatments were maintained over time by counting and removing unwanted grazers
from plots and by removing new barnacle recruits from previously cleared
areas. On each survey date, grazer abundance and visually-assessed percent
cover of algal taxa were recorded.

Matthew A. Whalen, Kristin M. Aquilino, John J. Stachowicz. 2016. Grazer
diversity interacts with biogenic habitat heterogeneity to accelerate
intertidal algal succession. Ecology. in press.
attribute NC_GLOBAL awards_0_award_nid String 518659
attribute NC_GLOBAL awards_0_award_number String OCE-0850707
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward?AWD_ID=0850707 (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 David L. Garrison
attribute NC_GLOBAL awards_0_program_manager_nid String 50534
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL comment String Rock Wall Experiment
PI: Jay Stachowicz (UC Davis)
Version: 05 April 2016
**NOTE: Please refer to Documentation for description and
units of measurement, especially for taxon and abundance.
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 2016-04-01T21:37:33Z
attribute NC_GLOBAL date_modified String 2016-04-06T16:58:21Z
attribute NC_GLOBAL defaultDataQuery String &time<now
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.641966
attribute NC_GLOBAL Easternmost_Easting double -123.0386
attribute NC_GLOBAL geospatial_lat_max double 38.3244
attribute NC_GLOBAL geospatial_lat_min double 38.3244
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -123.0386
attribute NC_GLOBAL geospatial_lon_min double -123.0386
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL infoUrl String https://www.bco-dmo.org/dataset/641692 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL keywords String abundance, area, barn, barn_trtmt, barnacle, barnacle_trtmt, bco, bco-dmo, biological, block, chemical, data, dataset, date, day, dmo, erddap, herb, herb_trtmt, latitude, longitude, management, month, oceanography, office, plot, preliminary, survey, taxon, trtmt, year
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/641692/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/641692 (external link)
attribute NC_GLOBAL Northernmost_Northing double 38.3244
attribute NC_GLOBAL param_mapping String {'641692': {'lat': 'master - latitude', 'lon': 'master - longitude'}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/641692/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String University of California-Davis
attribute NC_GLOBAL people_0_affiliation_acronym String UC Davis
attribute NC_GLOBAL people_0_person_name String John J. Stachowicz
attribute NC_GLOBAL people_0_person_nid String 518660
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 Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_1_affiliation_acronym String WHOI BCO-DMO
attribute NC_GLOBAL people_1_person_name String Shannon Rauch
attribute NC_GLOBAL people_1_person_nid String 51498
attribute NC_GLOBAL people_1_role String BCO-DMO Data Manager
attribute NC_GLOBAL people_1_role_type String related
attribute NC_GLOBAL project String Intertidal Diversity
attribute NC_GLOBAL projects_0_acronym String Intertidal Diversity
attribute NC_GLOBAL projects_0_description String Description from NSF award abstract:
Stimulated in part by rapid changes in the biological composition and richness of most of Earth's ecosystems, considerable theoretical and empirical research has focused on understanding the effects of species richness on communities and ecosystems. This research has resulted in major advances and has shown that diversity can affect ecosystem processes. However, we are currently limited in our ability to draw generalities regarding these effects that transcend ecosystems and to apply this knowledge to conservation and management efforts because: (1) most experiments are of short duration and relatively few are conducted under field conditions on natural substratum; and (2) most experiments manipulate only diversity and so cannot assess the strength of diversity relative to other known drivers of ecosystem functioning. Previous NSF-funded work found that species diversity of seaweeds does increase the accumulation of producer biomass and the diversity and richness of mobile invertebrates associated with those seaweeds. In this project, the investigator will examine the interactive effects of plant and grazer richness on seaweed productivity and assemblage recovery from disturbance by (a) continuing our ongoing diversity manipulations (b) nesting additional experiments manipulating grazers within these plots, and (c) performing new experiments to examine effects of grazer richness on algal assemblages. The main experiment consists of 72 1.5 m diameter plots in the rocky intertidal at Bodega Bay, California, split into 6 different treatments: a monoculture of each of the 4 algal species that comprise >85% of the algal cover in our system; a 4-species polyculture, and an unmanipulated control plot. The PI created these "diversity" plots by weeding under the auspices of a previous NSF grant.
Objectives of this project are:
(1) To nest within the diversity plots smaller cleared areas that either allow or prohibit access by grazers in order to test the interactive effects of algal diversity and herbivory on recovery of the algal assemblage from disturbance (or resilience).
(2) To conduct a separate combined additive and replacement series experiment to examine the effects of herbivore identity and richness on algal recruitment and succession.
(3) While the nested grazer-exclusion experiment is in progress, to continue weeding and collecting data in the uncleared portion of these plots as a continued test of the univariate effect of algal richness on the cover of algae and sessile invertebrates, and on mobile invertebrate abundance, richness, and diversity. Together with previous results, this will produce a 7 year record of the effects of seaweed richness on rocky intertidal communities, which will then be correlated with archived environmental data.
(4) After the nested grazer exclusion experiment is complete, to cease weeding plots and track their reinvasion by weeded species in order to evaluate the mechanisms maintaining diversity of perennial algae.
Understanding the consequences of simultaneous changes in grazer abundance or diversity and algal diversity as well as the long-term effects of both on the resilience of algal communities in the face of disturbance will provide a better understanding of both the consequences of human encroachment into these habitats and the appropriate management efforts needed to minimize impacts and maintain ecosystem functioning. This is especially critical given that harvesting and trampling by humans are altering the diversity and composition of herbivores and algae in the California rocky intertidal zone.
attribute NC_GLOBAL projects_0_end_date String 2014-02
attribute NC_GLOBAL projects_0_geolocation String Bodega Bay, CA (38.3244 N, 123.0386 W); Temperate rocky intertidal zone
attribute NC_GLOBAL projects_0_name String Long-term and interactive effects of seaweed diversity and herbivory on intertidal community structure and functioning
attribute NC_GLOBAL projects_0_project_nid String 518661
attribute NC_GLOBAL projects_0_start_date String 2009-03
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 38.3244
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL subsetVariables String location,latitude,longitude
attribute NC_GLOBAL summary String These data summarize results from a field experiment testing effects of
gastropod grazer diversity and substrate heterogeneity generated by barnacles
on intertidal algal succession. The\u00a0manipulation experiment was conducted
in Bodega Bay, CA from 2010-2011.
attribute NC_GLOBAL title String Rock wall manipulation experiment conducted in Bodega Bay, CA from 2010-2011
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL Westernmost_Easting double -123.0386
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.3
variable location   String  
attribute location bcodmo_name String unknown
attribute location description String Site name.
attribute location long_name String Location
attribute location units String dimensionless
variable latitude   double  
attribute latitude _CoordinateAxisType String Lat
attribute latitude _FillValue double NaN
attribute latitude actual_range double 38.3244, 38.3244
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 of site.
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 -123.0386, -123.0386
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 of site. Negative = West.
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 standard_name String longitude
attribute longitude units String degrees_east
variable survey   byte  
attribute survey _FillValue byte 127
attribute survey actual_range byte 1, 9
attribute survey bcodmo_name String unknown
attribute survey description String Algal/animal surveys listed numerically in chronological order.
attribute survey long_name String Survey
attribute survey units String dimensionless
variable date   int  
attribute date _FillValue int 2147483647
attribute date actual_range int 20100922, 20110816
attribute date bcodmo_name String date
attribute date description String The date a particular plot was sampled. format: YYYYmmdd
attribute date long_name String Date
attribute date nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/ADATAA01/ (external link)
attribute date units String unitless
variable month   String  
attribute month bcodmo_name String unknown
attribute month description String 2-digit month of sampling.
attribute month long_name String Month
attribute month units String mm (01 to 12)
variable day   String  
attribute day bcodmo_name String day
attribute day description String 2-digit day of month of sampling.
attribute day long_name String Day
attribute day nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/DAYXXXXX/ (external link)
attribute day units String dd (01 to 31)
variable year   short  
attribute year _FillValue short 32767
attribute year actual_range short 2010, 2011
attribute year bcodmo_name String year
attribute year description String 4-digit year of sampling. in YYYY format
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 plot   byte  
attribute plot _FillValue byte 127
attribute plot actual_range byte 1, 70
attribute plot bcodmo_name String unknown
attribute plot description String The unit of replication; each plot consisted of a 20cm x 20cm square surrounded by marine epoxy (Z-spar A-788 Splash-Zone).
attribute plot long_name String Plot
attribute plot units String dimensionless
variable block   byte  
attribute block _FillValue byte 127
attribute block actual_range byte 1, 2
attribute block bcodmo_name String unknown
attribute block description String Each of two spatial blocks (1 and 2) that are on opposite sides of a channel that feeds an elogate pool at the base of the rock wall.
attribute block long_name String Block
attribute block units String dimensionless
variable herb_trtmt   String  
attribute herb_trtmt bcodmo_name String unknown
attribute herb_trtmt description String Herbivore (Grazer) treatment: A=all three species; L=Littorina only (limpets removed); D=Lottia digitalis only; S=Lottia scabra only.
attribute herb_trtmt long_name String Herb Trtmt
attribute herb_trtmt units String dimensionless
variable barnacle_trtmt   String  
attribute barnacle_trtmt bcodmo_name String unknown
attribute barnacle_trtmt description String Barnacle treatment: full (no barnacles removed); none (all barnacles removed); half (barnacles removed from one half of plot).
attribute barnacle_trtmt long_name String Barnacle Trtmt
attribute barnacle_trtmt units String dimensionless
variable barn_trtmt   String  
attribute barn_trtmt bcodmo_name String unknown
attribute barn_trtmt description String Barnacle subtreatment: Y (plot/side with barnacles); N (plot/side without barnacles); H (plot with half barnacle cover).
attribute barn_trtmt long_name String Barn Trtmt
attribute barn_trtmt units String dimensionless
variable area   short  
attribute area _FillValue short 32767
attribute area actual_range short 100, 200
attribute area bcodmo_name String unknown
attribute area description String Area occupied by reference plot or side of plot in cm^2; separates full plots from sides within plots in the half barnacle treatment.
attribute area long_name String Area
attribute area units String square centimeters (cm^2)
variable taxon   String  
attribute taxon bcodmo_name String taxon
attribute taxon description String Taxon/group measured:
new_barn = new barnacles;
diatoms = microalgae;
ulva = Ulva spp.;
endo = Endocladia muricata;
masto = Mastocarpus papillatus;
hilden = Hildenbrandia sp.;
petro = Mastocarpus papillatus tetrasporophyte (aka Petrocelis phase);
porphy = Pyropia perforata (formerly Porphyra);
pelv = Pelvetiopsis limitata;
clad = Cladopohora sp.;
enc_coral = encrusting coralline red algae;
cumagloia = Cumagloia andersonii;
littorina = Littorina sp.;
L_scabra = Lottia scabra;
L_digitalis = Lottia digitalis.
attribute taxon long_name String Taxon
attribute taxon units String dimensionless
variable abundance   float  
attribute abundance _FillValue float NaN
attribute abundance actual_range float 0.0, 2429.0
attribute abundance bcodmo_name String abundance
attribute abundance description String new_barn = Number of newly settled barnacles counted and subsequently removed from cleared areas (half and no barnacle treatments).
diatoms, ulva, endo, masto, hilden, petro, porphy, pelv, clad, enc_coral, cumagloia = Visual percent cover estimate of the taxon/group in plot/side of plot.
littorina = Number of Littorina sp. counted in plot and subsequently removed from herbivore treatments D and S.
L_scabra = Number of Lottia scabra counted in plot and subsequently removed from herbivore treatments D and L.
L_digitalis = Number of Lottia digitalis counted in plot and subsequently removed from herbivore treatments S and L.
attribute abundance long_name String Abundance
attribute abundance nerc_identifier String https://vocab.nerc.ac.uk/collection/P03/current/B070/ (external link)
attribute abundance units String varies by taxon/group (see description)

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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