http://lod.bco-dmo.org/id/dataset/939617
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.
pointOfContact
2024-10-04
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Scallop density survey data across landscape fragmentation per se treatments in June, July, and August 2019 in Back Sound, NC
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.939617.1
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) Scallop density survey data across landscape fragmentation per se treatments in June, July, and August 2019 in Back Sound, NC. 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.939617.1 [access date]
Dataset Description: <p>ASU = artificial seagrass unit<br />
VIMS ESL = Eastern Shore Laboratory | Virginia Institute of Marine Science</p> Methods and Sampling: <p>To explore the independent influence of fragmentation <em>per se</em> (patchiness) on mobile juvenile bay scallop (<em>Argopecten irradians</em>) density, we constructed 16 artificial seagrass unit (ASU) landscapes (12-m x 10-m), consisting of four replicates each of four treatments. Fragmentation <em>per se</em> treatments consisted of three levels of patchiness (i.e., 1 patch, 12 patches, 24 patches) while maintaining consistent total ASU area (48 ASUs, 50 m<sup>2</sup> artificial seagrass). Between treatments of 12 and 24 patches, differences in configuration could be achieved by either varying interpatch distances or total footprint area. Therefore, we used two 12-patch treatments to consider these covariates separately, as indicated by footprint sizes (i.e., 12 patches-small versus 12 patches-large). We also examined the effect of patch-scale position on scallop densities. Relative 'inner' and 'outer' positions were operationally defined for 1-patch and multi-patch landscapes, separately. Within 1-patch landscapes, ASUs that bordered sandflat were considered 'outer' positions, while 'inner' positions were defined by ASUs that only bordered other ASUs. Within multi-patch landscapes, 'outer' positions were patches that had no additional patches between them and the landscape footprint border. 'Inner' position patches were centrally located patches in the landscape.</p>
<p>Freely mobile (non-tethered) juvenile scallops of SH 43.1 ± 6.8 mm [mean ± SD] were placed at a consistent density (indiv. m<sup>-2</sup>) across landscapes for three density survey trials, one each during June, July, and August 2019. Prior to each trial, landscapes were snorkeled to confirm that no scallops were present. Due to the isolation of these ASU landscapes and the general rarity of scallops on Oscar shoal, we were reasonably certain all scallops in these landscapes were purposefully placed there, meaning there was no immigration from other ASU landscapes or natural seagrass. For June and July trials, all scallops were collected from a natural seagrass meadow located across a deep boating channel from the experimental landscapes. During August, a mixture of scallops from two sources was used: from the nearby meadow, and NC-descendant scallops of similar size provided by VIMS ESL. Before scallop placement in landscapes, all scallops were stored in outdoor estuary-fed flow-through aquaria for up to two weeks. During June and July trials, scallops were placed in all 16 landscapes at an initial density of 1 m<sup>-2</sup> (i.e., one per ASU), allowing for resolution in landscape treatment effects while maintaining relative comparability to natural conditions in our system (i.e., 0.6 scallops m<sup>-2</sup> in the nearby scallop-source meadow). By the conclusion of the July trial, landscapes along one shoal margin were becoming substantially buried under sediment due to wave/current action. Therefore, for the August trial the number of landscape treatment replicates was reduced to three to exclude the buried replicates, and a 1-patch landscape replicate was rebuilt in a calmer area of the shoal. In addition, during the August trial, the initial scallop density was increased to 2 m<sup>-2</sup> (i.e., two per ASU) to increase resolution among habitat treatments. Observers snorkel surveyed each landscape at 24 h, 48 h, and 72 h during each trail, except for the 48-h survey in June, which was canceled due to inclement weather. During each survey, observers recorded the number of scallops per ASU. On rare occasions when scallops were found on sand &lt;1 m from an ASU, their count was assigned to that nearest ASU, as they were likely still using the artificial seagrass mosaic as habitat.&nbsp;<br />
<br />
Depth note:&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).</p>
<p>Organism identifiers&nbsp;(common name, scientific name, LSID):<br />
bay scallop, <em>Argopecten irradians</em>, urn:lsid:marinespecies.org:taxname:156817<br />
Tulip whelk,<em>Fasciolaria</em>,urn:lsid:marinespecies.org:taxname:138001<br />
Knobbed whelk,<em>Busycon carica</em>,urn:lsid:marinespecies.org:taxname:160185<br />
Horse conch,<em>Triplofusus papillosus auct.</em>,urn:lsid:marinespecies.org:taxname:448509<br />
Moon snail,<em>Neverita duplicata</em>,urn:lsid:marinespecies.org:taxname:160407<br />
Lightning whelk,<em>Sinistrofulgur sinistrum</em>,urn:lsid:marinespecies.org:taxname:862934</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
Landscape
Num_patches
Footprint
Rep_letter
lat
lon
Date_check
Month
Check_num
Time_check
ISO_DateTime_UTC_check
H_tide
L_tide
Position
Patch_type
Edge_Interior
Cell_coord
Scallop_density
Sand_density
Tulip_whelk
Knobbed_whelk
Horse_conch
Moon_snail
Lightning_whelk
theme
None, User defined
site
site description
count
latitude
longitude
date
month of year
sample description
time of day
ISO_DateTime_UTC
density
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
2019-06-04
2019-08-04
North Carolina
0
BCO-DMO catalogue of parameters from Scallop density survey data across landscape fragmentation per se treatments in June, July, and August 2019 in Back Sound, NC
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/939917.rdf
Name: Site_ID
Units: unitless
Description: <p>Artificial seagrass unit (ASU) landscape name (Number of patches, footprint size, relicate letter)</p>
http://lod.bco-dmo.org/id/dataset-parameter/939918.rdf
Name: Landscape
Units: unitless
Description: <p>Landscape confirguration type (Number of patches, footprint size)</p>
http://lod.bco-dmo.org/id/dataset-parameter/939919.rdf
Name: Num_patches
Units: count
Description: <p>Number of patches in landscape configuration (1, 12, 24)</p>
http://lod.bco-dmo.org/id/dataset-parameter/939920.rdf
Name: Footprint
Units: unitless
Description: <p>Landscape footprint size (contiguous, small, large)</p>
http://lod.bco-dmo.org/id/dataset-parameter/939921.rdf
Name: Rep_letter
Units: unitless
Description: <p>Landscape configuration letter (a-e)</p>
http://lod.bco-dmo.org/id/dataset-parameter/939922.rdf
Name: lat
Units: decimal degrees
Description: <p>Landscape latitude north</p>
http://lod.bco-dmo.org/id/dataset-parameter/939923.rdf
Name: lon
Units: decimal degrees
Description: <p>Landscape longitude west</p>
http://lod.bco-dmo.org/id/dataset-parameter/939924.rdf
Name: Date_check
Units: unitless
Description: <p>Date of scallop density check (local time zone EST/EDT)</p>
http://lod.bco-dmo.org/id/dataset-parameter/939925.rdf
Name: Month
Units: unitless
Description: <p>Month of scallop density check</p>
http://lod.bco-dmo.org/id/dataset-parameter/939926.rdf
Name: Check_num
Units: unitless
Description: <p>Interval of scallop tether check 24 h, 48 h, 72 h</p>
http://lod.bco-dmo.org/id/dataset-parameter/939927.rdf
Name: Time_check
Units: unitless
Description: <p>Time of scallop density check (local time zone EST/EDT, 24h)</p>
http://lod.bco-dmo.org/id/dataset-parameter/939928.rdf
Name: ISO_DateTime_UTC_check
Units: unitless
Description: <p>DateTime with timezone of scallop density check (ISO 8601 format in timezone UTC)</p>
http://lod.bco-dmo.org/id/dataset-parameter/939929.rdf
Name: H_tide
Units: unitless
Description: <p>Time of high tide proximate to scallop tether check</p>
http://lod.bco-dmo.org/id/dataset-parameter/939930.rdf
Name: L_tide
Units: unitless
Description: <p>Time of low tide proximate to scallop tether check</p>
http://lod.bco-dmo.org/id/dataset-parameter/939931.rdf
Name: Position
Units: unitless
Description: <p>Patch-scale position (Inner, Outer)</p>
http://lod.bco-dmo.org/id/dataset-parameter/939932.rdf
Name: Patch_type
Units: unitless
Description: <p>Relative location of patch within landscape configuration (Inner, Outer, NA)</p>
http://lod.bco-dmo.org/id/dataset-parameter/939933.rdf
Name: Edge_Interior
Units: unitless
Description: <p>Edge or interior ASU</p>
http://lod.bco-dmo.org/id/dataset-parameter/939934.rdf
Name: Cell_coord
Units: unitless
Description: <p>ASU "cell coordinate" by C (column; out of 6) and R (row; out of 8) number</p>
http://lod.bco-dmo.org/id/dataset-parameter/939935.rdf
Name: Scallop_density
Units: number per square meter (#/m2)
Description: <p>Number of scallops on ASU Cell_coord</p>
http://lod.bco-dmo.org/id/dataset-parameter/939936.rdf
Name: Sand_density
Units: number per square meter (#/m2)
Description: <p>Number of scallops on sand <1-m from ASU Cell_coord</p>
http://lod.bco-dmo.org/id/dataset-parameter/939937.rdf
Name: Tulip_whelk
Units: number per square meter (#/m2)
Description: <p>Number of Tulip whelk (Fasciolaria). Life Science Identifier (LSID)=urn:lsid:marinespecies.org:taxname:138001</p>
http://lod.bco-dmo.org/id/dataset-parameter/939938.rdf
Name: Knobbed_whelk
Units: number per square meter (#/m2)
Description: <p>Number of Knobbed whelk (Busycon carica). Life Science Identifier (LSID)=urn:lsid:marinespecies.org:taxname:160185</p>
http://lod.bco-dmo.org/id/dataset-parameter/939939.rdf
Name: Horse_conch
Units: number per square meter (#/m2)
Description: <p>Number of Horse conch (Triplofusus papillosus auct.). Life Science Identifier (LSID)=urn:lsid:marinespecies.org:taxname:448509</p>
http://lod.bco-dmo.org/id/dataset-parameter/939940.rdf
Name: Moon_snail
Units: number per square meter (#/m2)
Description: <p>Number of Moon snail (Neverita duplicata). Life Science Identifier (LSID)=urn:lsid:marinespecies.org:taxname:160407</p>
http://lod.bco-dmo.org/id/dataset-parameter/939941.rdf
Name: Lightning_whelk
Units: number per square meter (#/m2)
Description: <p>Number of Lightning whelk (Sinistrofulgur sinistrum). Life Science Identifier (LSID)=urn:lsid:marinespecies.org:taxname:862934</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
681719
https://darchive.mblwhoilibrary.org/server/api/core/bitstreams/1b621ceb-6636-4f8f-b52a-01d8cddfb7ed/content
download
https://doi.org/10.26008/1912/bco-dmo.939617.1
download
onLine
dataset
<p>To explore the independent influence of fragmentation <em>per se</em> (patchiness) on mobile juvenile bay scallop (<em>Argopecten irradians</em>) density, we constructed 16 artificial seagrass unit (ASU) landscapes (12-m x 10-m), consisting of four replicates each of four treatments. Fragmentation <em>per se</em> treatments consisted of three levels of patchiness (i.e., 1 patch, 12 patches, 24 patches) while maintaining consistent total ASU area (48 ASUs, 50 m<sup>2</sup> artificial seagrass). Between treatments of 12 and 24 patches, differences in configuration could be achieved by either varying interpatch distances or total footprint area. Therefore, we used two 12-patch treatments to consider these covariates separately, as indicated by footprint sizes (i.e., 12 patches-small versus 12 patches-large). We also examined the effect of patch-scale position on scallop densities. Relative 'inner' and 'outer' positions were operationally defined for 1-patch and multi-patch landscapes, separately. Within 1-patch landscapes, ASUs that bordered sandflat were considered 'outer' positions, while 'inner' positions were defined by ASUs that only bordered other ASUs. Within multi-patch landscapes, 'outer' positions were patches that had no additional patches between them and the landscape footprint border. 'Inner' position patches were centrally located patches in the landscape.</p>
<p>Freely mobile (non-tethered) juvenile scallops of SH 43.1 ± 6.8 mm [mean ± SD] were placed at a consistent density (indiv. m<sup>-2</sup>) across landscapes for three density survey trials, one each during June, July, and August 2019. Prior to each trial, landscapes were snorkeled to confirm that no scallops were present. Due to the isolation of these ASU landscapes and the general rarity of scallops on Oscar shoal, we were reasonably certain all scallops in these landscapes were purposefully placed there, meaning there was no immigration from other ASU landscapes or natural seagrass. For June and July trials, all scallops were collected from a natural seagrass meadow located across a deep boating channel from the experimental landscapes. During August, a mixture of scallops from two sources was used: from the nearby meadow, and NC-descendant scallops of similar size provided by VIMS ESL. Before scallop placement in landscapes, all scallops were stored in outdoor estuary-fed flow-through aquaria for up to two weeks. During June and July trials, scallops were placed in all 16 landscapes at an initial density of 1 m<sup>-2</sup> (i.e., one per ASU), allowing for resolution in landscape treatment effects while maintaining relative comparability to natural conditions in our system (i.e., 0.6 scallops m<sup>-2</sup> in the nearby scallop-source meadow). By the conclusion of the July trial, landscapes along one shoal margin were becoming substantially buried under sediment due to wave/current action. Therefore, for the August trial the number of landscape treatment replicates was reduced to three to exclude the buried replicates, and a 1-patch landscape replicate was rebuilt in a calmer area of the shoal. In addition, during the August trial, the initial scallop density was increased to 2 m<sup>-2</sup> (i.e., two per ASU) to increase resolution among habitat treatments. Observers snorkel surveyed each landscape at 24 h, 48 h, and 72 h during each trail, except for the 48-h survey in June, which was canceled due to inclement weather. During each survey, observers recorded the number of scallops per ASU. On rare occasions when scallops were found on sand &lt;1 m from an ASU, their count was assigned to that nearest ASU, as they were likely still using the artificial seagrass mosaic as habitat.&nbsp;<br />
<br />
Depth note:&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).</p>
<p>Organism identifiers&nbsp;(common name, scientific name, LSID):<br />
bay scallop, <em>Argopecten irradians</em>, urn:lsid:marinespecies.org:taxname:156817<br />
Tulip whelk,<em>Fasciolaria</em>,urn:lsid:marinespecies.org:taxname:138001<br />
Knobbed whelk,<em>Busycon carica</em>,urn:lsid:marinespecies.org:taxname:160185<br />
Horse conch,<em>Triplofusus papillosus auct.</em>,urn:lsid:marinespecies.org:taxname:448509<br />
Moon snail,<em>Neverita duplicata</em>,urn:lsid:marinespecies.org:taxname:160407<br />
Lightning whelk,<em>Sinistrofulgur sinistrum</em>,urn:lsid:marinespecies.org:taxname:862934</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_Density_2019.xlsx" were imported into the BCO-DMO data system for this dataset. Values "NA" imported as missing data values.
** 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.
* Column names adjusted to conform to BCO-DMO naming conventions designed to support broad re-use by a variety of research tools and scripting languages. [Only numbers, letters, and underscores. Can not start with a number]
* 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.
* Species names provided in email correspondence were added to the metadata for this dataset. LSIDs added from World Register of Marine Species (WoRMS) matches on 2024-10-10. "Triplofusus papillosus" matched to "Triplofusus papillosus auct.",urn:lsid:marinespecies.org:taxname:448509
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