http://lod.bco-dmo.org/id/dataset/939581
eng; USA
utf8
dataset
Highest level of data collection, from a common set of sensors or instrumentation, usually within the same research project
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
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2024-10-04
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Data from scallop survival assays conducted as part of a larger concurrent study of fragmentation effects on estuarine faunal communities with Artificial Seagrass Units (ASU) in Back Sound, NC from July to September 2018
2024-10-04
publication
2024-10-04
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2024-10-11
publication
https://doi.org/10.26008/1912/bco-dmo.939581.1
F. Joel Fodrie
University of North Carolina at Chapel Hill
principalInvestigator
Amy Yarnall
University of North Carolina at Chapel Hill
principalInvestigator
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
publisher
Cite this dataset as: Yarnall, A., Fodrie, F. J. (2024) Data from scallop survival assays conducted as part of a larger concurrent study of fragmentation effects on estuarine faunal communities with Artificial Seagrass Units (ASU) in Back Sound, NC from July to September 2018. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2024-10-04 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.939581.1 [access date]
Methods and Sampling: <p>To parse the influences of fragmentation components on scallop survival, we generated nine unique landscape grids of 15 × 15 cells. Each cell was the size of an ASU, making the landscape area = 234 m<sup>2</sup> (18-m × 13-m). These landscapes were part of a larger-scale concurrent experiment, during which we examined seagrass fragmentation effects on estuarine faunal communities (Yarnall et al. In Press). Landscapes were designed to be treatments along orthogonal axes of seagrass percent cover of the landscape footprint (10%, 35%, 60%) and fragmentation <em>per se</em>, indexed by percolation probability (0.1, 0.35, 0.59).</p>
<p>Relative scallop survival was measured using tethered juvenile bay scallops of initial shell height (SH) 3-5 mm, provided by the Castagna Shellfish Research Hatchery at The Virginia Institute of Marine Science, Eastern Shore Laboratory (VIMS ESL) in Wachapreague, VA. The knotted end of 10-cm segment of 12-lbs test monofilament was dotted with cyanoacrylate glue and pressed into a scallop’s ventral shell ridge under a tab of duct tape. Each tether was then anchored to a 30-cm lawn staple and held overnight in aquaria to check attachment integrity. Tethers were then deployed across landscapes the following day.</p>
<p>To examine whether landscape configuration could mediate density-dependent predation rates on scallops, tethers were deployed in low (1<em>x</em> = 4 or 5 m<sup>-2</sup>) and high (6<em>x</em> = 24 or 30 m<sup>-2</sup>) density treatments (<em>x</em> was chosen based on scallop availability). All scallop tethers were placed ≤1-m from the seagrass-sandflat interface on randomly selected edge (interface-bordering) ASUs, to avoid potential edge effects. Five 24-h survival assay trials were conducted from July to September 2018. Because predation rates after 24 h were high during the first trial, when scallops were smallest, tethers were also checked at 2 h and 6 h during subsequent trials. However, preliminary analysis revealed that across trials, predation rates after 2 h and 6 h were too low to provide resolution among landscape treatments; therefore, only results for cumulative survival after 24 h are presented.</p>
<p>During each survival assay, observers snorkel surveyed tethers and recorded the number of live and dead scallops per treatment. During the first trial, ten tethered dead scallop shells (valves glued shut) were deployed as an additional tether integrity control. However, controls were depredated at similar rates to live scallops, as evinced by crushed shells. For all subsequent trials, control tethers were deployed in cages constructed from cuboid PVC frames covered by mesh VEXAR®. Attachment failure occurred in &lt;3% of all caged-control tethers, therefore no adjustments to scallop recovery rates were necessary.&nbsp;<br />
<br />
Depth note:&nbsp;&nbsp;Depth ranges were similar across all sites as they were located on a single shoal (Oscar Shoal in Back Sound, NC, USA). Depths typically ranged from &lt;0.5 m (at low tide) to 1.5-2 m (at high tide).<br />
<br />
Organism identifiers (common name, scientific name, LSID):<br />
bay scallop, <em>Argopecten irradians</em>,&nbsp;urn:lsid:marinespecies.org:taxname:156817</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1635950 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1635950
completed
F. Joel Fodrie
University of North Carolina at Chapel Hill
252-726-6841
Institute of Marine Sciences & Department of Marine Sciences 3431 Arendell Street
Morehead City
NC
28557
USA
jfodrie@unc.edu
pointOfContact
Amy Yarnall
University of North Carolina at Chapel Hill
(601) 634-3772
Engineer Research Development Center, USACE 3909 Halls Ferry Rd.
Vicksburg
MS
39180
USA
amyhyarnall@gmail.com
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Site_ID
Per_cov
Frag
lat
lon
Date_In
Time_In
ISO_DateTime_UTC_In
Check_num
Date_check
Time_check
H_tide
L_tide
WaterTemp_C
Sal_PSU
Cell_coord
Treatment
Density_initial
Live_check
Dead_check
Dead_total
Shell_gone
Shell_intactdead
Shell_intacthalf
Shell_fragment
Tether_snipped
Shell_chipped
Shell_drilled
Not_found
Notes
theme
None, User defined
site
percent coverage
site description
latitude
longitude
date_local
time_local
ISO_DateTime_UTC
sample description
water temperature at measurement depth
salinity
treatment
count
comments
featureType
BCO-DMO Standard Parameters
otherRestrictions
otherRestrictions
Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use.
Collaborative Research: Habitat fragmentation effects on fish diversity at landscape scales: experimental tests of multiple mechanisms
https://osprey.bco-dmo.org/project/714026
Collaborative Research: Habitat fragmentation effects on fish diversity at landscape scales: experimental tests of multiple mechanisms
<p>Amount and quality of habitat is thought to be of fundamental importance to maintaining coastal marine ecosystems. This research will use large-scale field experiments to help understand how and why fish populations respond to fragmentation of seagrass habitats. The question is complex because increased fragmentation in seagrass beds decreases the amount and also the configuration of the habitat (one patch splits into many, patches become further apart, the amount of edge increases, etc). Previous work by the investigators in natural seagrass meadows provided evidence that fragmentation interacts with amount of habitat to influence the community dynamics of fishes in coastal marine landscapes. Specifically, fragmentation had no effect when the habitat was large, but had a negative effect when habitat was smaller. In this study, the investigators will build artificial seagrass habitat to use in a series of manipulative field experiments at an ambitious scale. The results will provide new, more specific information about how coastal fish community dynamics are affected by changes in overall amount and fragmentation of seagrass habitat, in concert with factors such as disturbance, larval dispersal, and wave energy. The project will support two early-career investigators, inform habitat conservation strategies for coastal management, and provide training opportunities for graduate and undergraduate students. The investigators plan to target students from underrepresented groups for the research opportunities.</p>
<p>Building on previous research in seagrass environments, this research will conduct a series of field experiments approach at novel, yet relevant scales, to test how habitat area and fragmentation affect fish diversity and productivity. Specifically, 15 by 15-m seagrass beds will be created using artificial seagrass units (ASUs) that control for within-patch-level (~1-10 m2) factors such as shoot density and length. The investigators will employ ASUs to manipulate total habitat area and the degree of fragmentation within seagrass beds in a temperate estuary in North Carolina. In year one, response of the fishes that colonize these landscapes will be measured as abundance, biomass, community structure, as well as taxonomic and functional diversity. Targeted ASU removals will then follow to determine species-specific responses to habitat disturbance. In year two, the landscape array and sampling regime will be doubled, and half of the landscapes will be seeded with post-larval fish of low dispersal ability to test whether pre- or post-recruitment processes drive landscape-scale patterns. In year three, the role of wave exposure (a natural driver of seagrass fragmentation) in mediating fish community response to landscape configuration will be tested by deploying ASU meadows across low and high energy environments.</p>
Habitat Fragmentation
largerWorkCitation
project
eng; USA
oceans
-76.604
-76.588
34.7
34.706
2018-07-04
2018-09-04
North Carolina
0
BCO-DMO catalogue of parameters from Data from scallop survival assays conducted as part of a larger concurrent study of fragmentation effects on estuarine faunal communities with Artificial Seagrass Units (ASU) in Back Sound, NC from July to September 2018
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
http://lod.bco-dmo.org/id/dataset-parameter/939750.rdf
Name: Site_ID
Units: unitless
Description: <p>Artificial seagrass unit (ASU) landscape name (Percent cover value-Percolation probability value)</p>
http://lod.bco-dmo.org/id/dataset-parameter/939751.rdf
Name: Per_cov
Units: percent (%)
Description: <p>Percent cover of ASUs in 234 m^2 landscape footprint (10, 35, 60)</p>
http://lod.bco-dmo.org/id/dataset-parameter/939752.rdf
Name: Frag
Units: unitless
Description: <p>ASU landscape fragmentation per se indexed by percolation probability (0.1, 0.35, 0.59)</p>
http://lod.bco-dmo.org/id/dataset-parameter/939753.rdf
Name: lat
Units: decimal degrees
Description: <p>Landscape latitude north</p>
http://lod.bco-dmo.org/id/dataset-parameter/939754.rdf
Name: lon
Units: decimal degrees
Description: <p>Landscape longitude west</p>
http://lod.bco-dmo.org/id/dataset-parameter/939755.rdf
Name: Date_In
Units: unitless
Description: <p>Date of scallop tether deployment (local time zone EST/EDT)</p>
http://lod.bco-dmo.org/id/dataset-parameter/939756.rdf
Name: Time_In
Units: unitless
Description: <p>Time of scallop tether deployment (local time zone EST/EDT, 24hr)</p>
http://lod.bco-dmo.org/id/dataset-parameter/939757.rdf
Name: ISO_DateTime_UTC_In
Units: unitless
Description: <p>DateTime with timezone of scallop tether deployment (ISO 8601 format in timezone UTC)</p>
http://lod.bco-dmo.org/id/dataset-parameter/939758.rdf
Name: Check_num
Units: unitless
Description: <p>Interval of scallop tether check 2 h, 6 h, 24 h</p>
http://lod.bco-dmo.org/id/dataset-parameter/939759.rdf
Name: Date_check
Units: unitless
Description: <p>Date of scallop tether check (local time zone EST/EDT)</p>
http://lod.bco-dmo.org/id/dataset-parameter/939760.rdf
Name: Time_check
Units: unitless
Description: <p>Time of scallop tether check (local time zone EST/EDT, 24hr)</p>
http://lod.bco-dmo.org/id/dataset-parameter/939761.rdf
Name: H_tide
Units: unitless
Description: <p>Time of high tide proximate to scallop tether check (local time zone EST/EDT, 24hr)</p>
http://lod.bco-dmo.org/id/dataset-parameter/939762.rdf
Name: L_tide
Units: unitless
Description: <p>Time of low tide proximate to scallop tether check (local time zone EST/EDT, 24hr)</p>
http://lod.bco-dmo.org/id/dataset-parameter/939763.rdf
Name: WaterTemp_C
Units: degrees C
Description: <p>Surface water temperature at time of scallop tether check</p>
http://lod.bco-dmo.org/id/dataset-parameter/939764.rdf
Name: Sal_PSU
Units: Practical Salinity Units (PSU)
Description: <p>Surface salinity at time of scallop tether check</p>
http://lod.bco-dmo.org/id/dataset-parameter/939765.rdf
Name: Cell_coord
Units: unitless
Description: <p>ASU landscape "cell coordinate" by C (column; out of 15) and R (row; out of 15) number. See "Methods & Sampling" section for additional details of survey design for grid cells.</p>
http://lod.bco-dmo.org/id/dataset-parameter/939766.rdf
Name: Treatment
Units: unitless
Description: <p>Scallop tether density treatment. CC= "Caged Controls" - dead scallop shell tether controls in a cage; DC= "Dead Controls" - dead scallop shell tether controls (not caged); H= "High density treatment"; L= "Low density treatment"</p>
http://lod.bco-dmo.org/id/dataset-parameter/939767.rdf
Name: Density_initial
Units: number per meter squared (per m2)
Description: <p>Number of scallop tethers deployed for high or low density treatment</p>
http://lod.bco-dmo.org/id/dataset-parameter/939768.rdf
Name: Live_check
Units: count
Description: <p>Number of live tethered scallops at time of check</p>
http://lod.bco-dmo.org/id/dataset-parameter/939769.rdf
Name: Dead_check
Units: count
Description: <p>Number (since last check) of dead/eaten/missing tethered scallops at time of check</p>
http://lod.bco-dmo.org/id/dataset-parameter/939770.rdf
Name: Dead_total
Units: count
Description: <p>Cumulative number (since deployment) of dead/eaten/missing tethered scallops at time of check</p>
http://lod.bco-dmo.org/id/dataset-parameter/939771.rdf
Name: Shell_gone
Units: count
Description: <p>Number of missing tethered scallops whether the complete tether is present in Dead_check</p>
http://lod.bco-dmo.org/id/dataset-parameter/939772.rdf
Name: Shell_intactdead
Units: count
Description: <p>Number of intact dead shells of tethered scallops in Dead_check</p>
http://lod.bco-dmo.org/id/dataset-parameter/939773.rdf
Name: Shell_intacthalf
Units: count
Description: <p>Number of intact half shells (i.e., one valve) of tethered scallops in Dead_check</p>
http://lod.bco-dmo.org/id/dataset-parameter/939774.rdf
Name: Shell_fragment
Units: count
Description: <p>Number of fragmented/chrushed tethered scallops in Dead_check</p>
http://lod.bco-dmo.org/id/dataset-parameter/939775.rdf
Name: Tether_snipped
Units: count
Description: <p>Number of missing tethered scallops where the tether has been snipped in Dead_check</p>
http://lod.bco-dmo.org/id/dataset-parameter/939776.rdf
Name: Shell_chipped
Units: count
Description: <p>Number of chipped shell tethered scallops in Dead_check</p>
http://lod.bco-dmo.org/id/dataset-parameter/939777.rdf
Name: Shell_drilled
Units: count
Description: <p>Number of drilled shell tethered scallops in Dead_check</p>
http://lod.bco-dmo.org/id/dataset-parameter/939778.rdf
Name: Not_found
Units: count
Description: <p>Number of tethers not relocated. This number was substracted from initial density (i.e., removed from the experiment)</p>
http://lod.bco-dmo.org/id/dataset-parameter/939779.rdf
Name: Notes
Units: unitless
Description: <p>Observational notes on tethered scallops</p>
GB/NERC/BODC > British Oceanographic Data Centre, Natural Environment Research Council, United Kingdom
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
45836
https://darchive.mblwhoilibrary.org/server/api/core/bitstreams/93f863ab-3ca2-437d-8f82-ca4c0eb8212c/content
download
https://doi.org/10.26008/1912/bco-dmo.939581.1
download
onLine
dataset
<p>To parse the influences of fragmentation components on scallop survival, we generated nine unique landscape grids of 15 × 15 cells. Each cell was the size of an ASU, making the landscape area = 234 m<sup>2</sup> (18-m × 13-m). These landscapes were part of a larger-scale concurrent experiment, during which we examined seagrass fragmentation effects on estuarine faunal communities (Yarnall et al. In Press). Landscapes were designed to be treatments along orthogonal axes of seagrass percent cover of the landscape footprint (10%, 35%, 60%) and fragmentation <em>per se</em>, indexed by percolation probability (0.1, 0.35, 0.59).</p>
<p>Relative scallop survival was measured using tethered juvenile bay scallops of initial shell height (SH) 3-5 mm, provided by the Castagna Shellfish Research Hatchery at The Virginia Institute of Marine Science, Eastern Shore Laboratory (VIMS ESL) in Wachapreague, VA. The knotted end of 10-cm segment of 12-lbs test monofilament was dotted with cyanoacrylate glue and pressed into a scallop’s ventral shell ridge under a tab of duct tape. Each tether was then anchored to a 30-cm lawn staple and held overnight in aquaria to check attachment integrity. Tethers were then deployed across landscapes the following day.</p>
<p>To examine whether landscape configuration could mediate density-dependent predation rates on scallops, tethers were deployed in low (1<em>x</em> = 4 or 5 m<sup>-2</sup>) and high (6<em>x</em> = 24 or 30 m<sup>-2</sup>) density treatments (<em>x</em> was chosen based on scallop availability). All scallop tethers were placed ≤1-m from the seagrass-sandflat interface on randomly selected edge (interface-bordering) ASUs, to avoid potential edge effects. Five 24-h survival assay trials were conducted from July to September 2018. Because predation rates after 24 h were high during the first trial, when scallops were smallest, tethers were also checked at 2 h and 6 h during subsequent trials. However, preliminary analysis revealed that across trials, predation rates after 2 h and 6 h were too low to provide resolution among landscape treatments; therefore, only results for cumulative survival after 24 h are presented.</p>
<p>During each survival assay, observers snorkel surveyed tethers and recorded the number of live and dead scallops per treatment. During the first trial, ten tethered dead scallop shells (valves glued shut) were deployed as an additional tether integrity control. However, controls were depredated at similar rates to live scallops, as evinced by crushed shells. For all subsequent trials, control tethers were deployed in cages constructed from cuboid PVC frames covered by mesh VEXAR®. Attachment failure occurred in &lt;3% of all caged-control tethers, therefore no adjustments to scallop recovery rates were necessary.&nbsp;<br />
<br />
Depth note:&nbsp;&nbsp;Depth ranges were similar across all sites as they were located on a single shoal (Oscar Shoal in Back Sound, NC, USA). Depths typically ranged from &lt;0.5 m (at low tide) to 1.5-2 m (at high tide).<br />
<br />
Organism identifiers (common name, scientific name, LSID):<br />
bay scallop, <em>Argopecten irradians</em>,&nbsp;urn:lsid:marinespecies.org:taxname:156817</p>
Specified by the Principal Investigator(s)
<p>All data were entered electronically into an Excel spreadsheet.</p>
Specified by the Principal Investigator(s)
* Sheet "Data" of submitted file "Scallop_Survival_Assay_2018.xlsx" was imported into the BCO-DMO data system for this dataset.
** In the BCO-DMO data system missing data identifiers are displayed according to the format of data you access. For example, in csv files it will be blank (null) values. In Matlab .mat files it will be NaN values. When viewing data online at BCO-DMO, the missing value will be shown as blank (null) values.
* DateTime with time zone column added "ISO_DateTime_UTC_In." Converted from Date_In and Time_In (from local EST/EDT to UTC) converted to ISO 8601 format.
Specified by BCO-DMO Data Managers
asNeeded
7.x-1.1
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact