Dataset: Biomass of experimental marine invertebrate communities across latitude

Name: Biomass of experimental marine invertebrate communities across latitude (Competition and Predation across Latitude)
Published: 2021-09-28
Keywords: marine invertebrate, predation, competition, latitude, Marine invasion, oceans

Cite This Dataset

DOI:10.26008/1912/bco-dmo.861655.1

Spatial Extent: N:55.4726 E:-79.5218 S:8.9128 W:-131.797

Temporal Extent: 2015-06-16 - 2018-09-12

Project:

Community Effects of Competition and Predation across Latitude and Implications for Species Invasions (Competition and Predation across Latitude)

Principal Investigator:

Amy L. Freestone (Temple University, Temple)

Co-Principal Investigator:

Gregory E. Ruiz (Smithsonian Environmental Research Center, SERC)

Mark E. Torchin (Smithsonian Tropical Research Institute , STRI)

Scientist:

Laura J. Jurgens (Temple University, Temple)

Carmen Schlöder (Smithsonian Tropical Research Institute , STRI)

Student:

Mariana Bonfim (Temple University, Temple)

Diana Paola López (Temple University, Temple)

Michele F. Repetto (Temple University, Temple)

Contact:

Amy L. Freestone (Temple University, Temple)

BCO-DMO Data Manager:

Sawyer Newman (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2021-09-28

Restricted:

Release Date:

2021-08-30

Validated:

Yes

Current State:

Final no updates expected

Biomass of experimental marine invertebrate communities across latitude (Competition and Predation across Latitude)

Abstract:

Biomass of sessile marine invertebrates from coastal sites across a latitudinal gradient spanning the subarctic to the tropics. Biomass of each community was measured after a developmental period of three or 12 months under nine different treatments that tested the effect of predation and competition. Caging was used to reduce predation pressure and biomass removals opened up space, a limiting resource in sessile communities.

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Archival Copy

Version Date	Archive	Persistent Identifier	Date Assigned
2021-09-28	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.26008/1912/bco-dmo.861655.1	2022-04-18

Description

Methods & Sampling

Methodology:

Marine invertebrate communities developed on PVC settlement panels (14 x 14 cm) hung on floating docks one meter below the water surface at local marinas at three coastal sites in each region (Panama, Mexico, California, Alaska). Communities developed for three or 12 months under the following treatments: caged (i.e. reduced predation), partial cage (i.e. procedural cage control; ambient predation) and (c) open (i.e. ambient predation). Caging material had a mesh size of 0.635 cm. These treatments were fully crossed with biomass removals of 0%, approximately 20% (actual 18%, 36cm2) or approximately 60% (actual 54%, 107cm2) panel surface scrapes. On panels assigned a removal treatment, a total of three parallel scrapes or one scrape positioned randomly on the surface of the panel to reach the 60% or 20% surface opening was performed, respectively. Communities that assembled for three months received two removal rounds (1 and 2 months after deployment) while those that assembled for 12 months received five rounds (1, 2, 6, 10, and 11 months after deployment) before the richness of each community was assessed. Experiments were initiated in Alaska in June 2015, California in May 2016, Mexico in June 2017 and Panama in December 2015.

Sampling and analytical procedures:

Following the assigned developmental period and approximately one month after the last biomass removal, communities were retrieved and brought back to a laboratory for assessment.

Wet weight of each community was recorded as a measure of biomass. Biomass values include the weight of the panel (average 267.5 grams).

Data Processing Description

BCO DMO Data Processing Notes:

Converted dates to yyyy-mm-dd format

Data Files

File
abc_biovision_dataarchive_mainexp_3mo12mo_26may21-3.csv (Comma Separated Values (.csv), 97.67 KB) MD5:fd86f2e8ed310154d4e7a4d0a95c1c66 Primary data file for dataset ID 861655

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1434528

Deployments

None available yet

Instruments

Grooved PVC settlement plate

Supplied Name: PVC settlement panels

Supplied Description:

Instrument Type

Generic Name: Grooved PVC settlement plate

Generic Description:

An artificial colonization substrate made of a sheet of PVC with engraved lines to roughen its surface. It is used to determine the extent of colonization and/or the diversity of settled organisms in a marine or artificial environment.

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
Region	Region where each taxon was collected (Alaska, California, Mexico, Panama)	unitless	region
Site_name	Complete site name	unitless	site
Site_code	Unique site abbreviation (two letter code)	unitless	Site_ID
Latitude	Latitude of site where communities developed. Negative values indicate South.	decimal degrees	lat
Longitude	Longitude of site where communities developed. Negative values indicate West.	decimal degrees	lon
Plate_ID	Unique panel (community) reference number	unitless	sample
Deploy_date	Date when experimental communities (panels) were deployed for a 3 or 12 month developmental period. Format: YYYY-MM-DD. Format: %Y-%m-%d	unitless	date
Retrieve_date	Date when experimental communities (panels) were retrieved after a 3 or 12 month developmental period. Format: YYYY-MM-DD. Format: %Y-%m-%d	unitless	date
Deploy_duration	Length of growth period (3 or 12-month)	number of months	duration
Treatment_type	Treatment description. full =full cage; open = no cage; partial = partial cage	unitless	treatment
Comp_removal	Biomass removal. 0 = no biomass removal; 20 = 20% surface scrape; 60 = 60% surface scrape	unitless	treatment
Wet_wt_g	wet weight (in grams) of the community, including the mass of the standard PVC panel	grams	weight

Status message

Database

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Dataset: Biomass of experimental marine invertebrate communities across latitude