Dataset: IntertidaI Transitions Mussel Removals

Name: A long-term series of species occupying fixed points on the middle intertidal (mussel-dominated) zone of a rocky intertidal shoreline, for use in studying species replacement patterns through time
Published: 2022-07-11
Keywords: oceans

Cite This Dataset

DOI:10.26008/1912/bco-dmo.875177.1

Spatial Extent: N:48.3912 E:-124.7328 S:48.3908 W:-124.7389

Temporal Extent: 1997-06 - 2022-05

Project:

Effects of Demography and Genetics on Extinction in Small Populations: Experiments with an Exploited Kelp (Experiments with an Exploited Kelp)

Field Parameterization and Experimental Tests of the Neutral Theory of Biodiversity (Neutral Theory of Biodiversity)

LTREB: Ecological Dynamics in an Experimentally-Tractable Natural Ecosystems (LTREB Ecological Dynamics)

The Role of Regenerated Nitrogen for Rocky Shore Productivity (Regenerated Nitrogen)

Principal Investigator:

Timothy Wootton (University of Chicago)

BCO-DMO Data Manager:

Shannon Rauch (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2022-07-11

Restricted:

Validated:

Yes

Current State:

Final no updates expected

A long-term series of species occupying fixed points on the middle intertidal (mussel-dominated) zone of a rocky intertidal shoreline, for use in studying species replacement patterns through time

Abstract:

This dataset comes from a long-term series of species occupying fixed points on the middle intertidal (mussel-dominated) zone of a rocky intertidal shoreline. Data are relevant to studies of species replacement patterns through time. In this experiment, the dominant species, Mytilus californians, is selectively removed to simulate its local extinction. The experiment serves as a rigorous test of various modeling approaches using companion data from unmanipulated plots, and offers insight into the dynamics and interactions among species in the absence of the dominant system competitor.

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Archival Copy

Version Date	Archive	Persistent Identifier	Date Assigned
2022-07-11	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.26008/1912/bco-dmo.875177.1	2022-09-09

Description

Acknowledgement of the Makah Tribal Council for permission to allow these data to be collected on their lands should be made where possible when the data are an essential part of the publication.

These data series are being actively extended and analyzed by the data provider, and interested investigators may wish to contact the data provider regarding these data, the ecological context under which these data were collected, whether planned use of these data represents redundant efforts, and any details of the data collection process the data provider may have inadvertently neglected to include here. As a rule of thumb for any data made publicly available, including these, investigators intending to use these data for publication should consider the considerable effort made to gather and organize them, and whether publication would reasonably be possible without including these data. If not, then it may be appropriate to explore involving the author in the publication process.

In addition to the NSF awards cited under "Funding" below, these data were funded through awards from the Andrew Mellon Foundation, the University of Chicago, and Olympic Natural Resource Center.

Methods & Sampling

Data are taken 1-2 times per year (every year in late May-early June and occasionally late August-early September) from 1993-2022 at the same points on the intertidal shoreline of Tatoosh Island, Washington, USA using a 65 x 65 cm quadrat with 100 points defined by the crossing of 10 equidistant monofilament lines in horizontal and vertical directions, placed at fixed locations defined by stainless steel screws embedded in the rock. The dominant species, Mytilus californians, is selectively removed by hand using a pocket knife as needed to simulate its local extinction. The experiment serves as a rigorous test of various modeling approaches using companion data from unmanipulated plots, and offers insight into the dynamics and interactions among species in the absence of the dominant system competitor. See references below for details. All visual sampling was conducted by the same individual (JTW).

Known Issues: Sampling gaps in 2013 and 2020.

Notes:
- Callithamnion lumped with Polysiphonia until 2002.
- Plot size is 0.65 x 0.65 m, subdivided into a 10 x 10 grid of fixed points.
- Other mussel removal (MR1,3,7-10) plots were not censused for point transitions.
- All plots are located in the middle intertidal zone, dominated by Mytilus californianus.

Data Processing Description

BCO-DMO Processing:
- Created location_table from site locations provided in metadata form and via email.
- Created taxon_table from information provided in metadata form and via email.
- Converted latitude and longitude values to decimal degrees; rounded both to 4 decimal places.
- Joined the site locations and taxon information to the sampling data.
- Renamed fields to comply with BCO-DMO naming conventions.
- Re-formatted the data so dates are in a single column rather than one date per column; created the "taxon_code" and "taxon_name" columns.
- Unpivoted the data by creating a "sampling_date" column and a "taxon_code" column.
- Changed date format to YYYY-MM.
- Replaced spaces with underscores and removed apostrophes from Site and Sub_site values.
- Replaced commas with semi-colons in the taxon_name column.
- Where approved by the PI, original taxon names have been changed in the dataset to match the World Register of Marine Species' (WoRMS) accepted names.

Data Files

File
mussel_removal.csv (Comma Separated Values (.csv), 2.44 MB) MD5:b6739b2ddf4706bedcd09bcda4340619 Primary data file for dataset ID 875177

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-0117801
NSF Division of Ocean Sciences	OCE-0452687
NSF Division of Ocean Sciences	OCE-0928232
NSF Division of Environmental Biology	DEB-0919420
NSF Division of Ocean Sciences	OCE-1851489
NSF Division of Environmental Biology	DEB-1556874

Deployments

None available yet

Instruments

None available yet

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
Point_Number	Fixed sampling point	unitless	site
Latitude	Latitude of quadrat or transect. For transects, the value provided is the starting coordinate.	decimal degrees North	lat
Longitude	Longitude of quadrat or transect. For transects, the value provided is the starting coordinate.	decimal degrees North	lon
Plot	Plot	unitless	site
Point_Letter	Point letter (within quadrats only; an X in this columns means it's a transect)	unitless	site
sampling_date	Sampling date in format YYYY-MM (year and month) Format: %Y-%m	unitless	date
Site	Site name	unitless	site
Sub_site	Sub-site name	unitless	site
taxon_code	Taxon code	unitless	taxon_code
taxon_name	Taxon name	unitless	taxon
Tide_Height	Tide height	m LLW	tide

Database

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Dataset: IntertidaI Transitions Mussel Removals