http://lod.bco-dmo.org/id/dataset/748842
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
2018-10-25
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Seagrass (Zostera marina and Halodule wrightii) shoot count, biomass and shoot height from seagrass bed core samples collected in Back Sound, North Carolina in June and July of 2013
2019-06-18
publication
2019-06-18
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2019-06-21
publication
https://doi.org/10.1575/1912/bco-dmo.748842.2
Lauren Yeager
University of Texas - Marine Science Institute
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: Yeager, L. (2019) Seagrass (Zostera marina and Halodule wrightii) shoot count, biomass and shoot height from seagrass bed core samples collected in Back Sound, North Carolina in June and July of 2013. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 2) Version Date 2019-06-18 [if applicable, indicate subset used]. doi:10.1575/1912/bco-dmo.748842.2 [access date]
Dataset Description: <p><span style="color:rgb(0, 0, 0); font-family:helvetica,arial,sans-serif; font-size:14.4px">These data were published in Yeager et al. (2019). See "Related Datasets" section for other datasets from the same core samples.</span></p> Methods and Sampling: <p>We sampled 86 sites within seagrass habitats throughout Back Sound, North Carolina, USA (3442’ N to 3439’ N, 7637’ W to 7631’ W during July 2013. Sampling sites were located across 21 seagrass landscapes which were defined by 200m x 80m rectangles (matching common isolated bed size and shape within our system). These landscapes were previously selected to represent independent gradients in both total seagrass cover (260-11,764 m2) and landscape patchiness (1-75 individual patches; Yeager et al. 2016). Sampling sites in the current study were haphazardly placed across all 21 landscapes, but always located within seagrass itself, and not the unvegetated matrix.&nbsp;</p>
<p>Seagrass core sampling and laboratory processing:<br />
One core sample was taken from each sampling site. Each core measured 30 cm in diameter and captured the above ground seagrass habitat as well as the top 10 cm of the sediment surface. All cores were taken within 2 h of low tide and the GPS location of each core was marked with a Garmin 72H handheld unit (Garmin International, Olathe, Kansas, USA). Low-tide depth was measured in situ at each site at the time of sampling to the nearest 10 cm.&nbsp;&nbsp;</p>
<p>Seagrass tissue from the cores was separated and rinsed with clean freshwater. Seagrass was sorted by species (Zostera marina and Halodule wrightii). All shoots were enumerated to assess species-specific density and the first 20 shoots from each species were measured to assess maximum canopy height (rounded to the nearest mm). Seagrass was then sorted according to above and below-ground biomass; the above-ground biomass of each species was dried at 60 C for 48 h and weighed to the nearest 0.01 g.&nbsp;<br />
<br />
The core (30-cm diameter, PVC) was gently placed by hand at each site and pushed down to a constant depth of 10 cm into the sediment.&nbsp; The core was gently rotated to break seagrass rhizomes, then dug out by hand, lifted, and placed into a resealable 1.5-gallon plastic bag. The sample was transported back to the laboratory on ice.&nbsp;</p>
<p>Shoot heights we averaged across (up to) 20 shoots measured within each core.&nbsp; Mean shoot height per core was calculated using a pivot table in Excel.&nbsp;</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1661683 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1661683
completed
Lauren Yeager
University of Texas - Marine Science Institute
750 Channel View Dr
Port Aransas
TX
78373
US
laurenayeager@gmail.com
pointOfContact
asNeeded
Dataset Version: 2
Unknown
Site
Date
Replicate
Latitude
Longitude
Depth
Zos_shoot_count
Zos_biomass_g
Mean_zos_height_mm
Hal_shoot_count
Hal_biomass_g
Mean_hal_height_mm
Garmin 72H handheld unit (Garmin International, Olathe, Kansas, USA)
theme
None, User defined
site
date_local
replicate
latitude
longitude
depth
count
wet_weight_biomass
height
featureType
BCO-DMO Standard Parameters
GPS receiver
instrument
BCO-DMO Standard Instruments
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
-76.62355
-76.37371
34.06503
34.70648
2013-06-13
2013-07-26
North Carolina
0
BCO-DMO catalogue of parameters from Seagrass (Zostera marina and Halodule wrightii) shoot count, biomass and shoot height from seagrass bed core samples collected in Back Sound, North Carolina in June and July of 2013
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/770819.rdf
Name: Site
Units: unitless
Description: <p>Sampling location name</p>
http://lod.bco-dmo.org/id/dataset-parameter/770820.rdf
Name: Date
Units: unitless
Description: <p>Date (local) where core was taken. Local time zone is Eastern Daylight Time (EDT, UTC-4)</p>
http://lod.bco-dmo.org/id/dataset-parameter/770821.rdf
Name: Replicate
Units: unitless
Description: <p>Replicate core number at site</p>
http://lod.bco-dmo.org/id/dataset-parameter/770822.rdf
Name: Latitude
Units: decimal degrees (DD)
Description: <p>Latitude of location of where core taken</p>
http://lod.bco-dmo.org/id/dataset-parameter/770823.rdf
Name: Longitude
Units: decimal degrees (DD)
Description: <p>Longitude of location where core taken</p>
http://lod.bco-dmo.org/id/dataset-parameter/770824.rdf
Name: Depth
Units: meters (m)
Description: <p>Low tide depth where the core was taken</p>
http://lod.bco-dmo.org/id/dataset-parameter/770825.rdf
Name: Zos_shoot_count
Units: count (shoots)
Description: <p>Number of shoots of Zostera marina in core</p>
http://lod.bco-dmo.org/id/dataset-parameter/770826.rdf
Name: Zos_biomass_g
Units: grams (g)
Description: <p>Total dry weight of Zostera marina in core</p>
http://lod.bco-dmo.org/id/dataset-parameter/770827.rdf
Name: Mean_zos_height_mm
Units: millimeters (mm)
Description: <p>Mean height of 20 haphazardly selected shoots of Zostera marina within the core</p>
http://lod.bco-dmo.org/id/dataset-parameter/770828.rdf
Name: Hal_shoot_count
Units: count (shoots)
Description: <p>Number of shoots of Halodule wrightii in core</p>
http://lod.bco-dmo.org/id/dataset-parameter/770829.rdf
Name: Hal_biomass_g
Units: grams (g)
Description: <p>Total dry weight of Halodule wrightii in core</p>
http://lod.bco-dmo.org/id/dataset-parameter/770830.rdf
Name: Mean_hal_height_mm
Units: millimeters (mm)
Description: <p>Mean height of 20 haphazardly selected shoots of Halodule wrightii within the core</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
6112
https://darchive.mblwhoilibrary.org/bitstream/1912/24281/1/dataset-748842_core-samples-seagrass__v2.tsv
download
https://doi.org/10.1575/1912/bco-dmo.748842.2
download
onLine
dataset
<p>We sampled 86 sites within seagrass habitats throughout Back Sound, North Carolina, USA (3442’ N to 3439’ N, 7637’ W to 7631’ W during July 2013. Sampling sites were located across 21 seagrass landscapes which were defined by 200m x 80m rectangles (matching common isolated bed size and shape within our system). These landscapes were previously selected to represent independent gradients in both total seagrass cover (260-11,764 m2) and landscape patchiness (1-75 individual patches; Yeager et al. 2016). Sampling sites in the current study were haphazardly placed across all 21 landscapes, but always located within seagrass itself, and not the unvegetated matrix.&nbsp;</p>
<p>Seagrass core sampling and laboratory processing:<br />
One core sample was taken from each sampling site. Each core measured 30 cm in diameter and captured the above ground seagrass habitat as well as the top 10 cm of the sediment surface. All cores were taken within 2 h of low tide and the GPS location of each core was marked with a Garmin 72H handheld unit (Garmin International, Olathe, Kansas, USA). Low-tide depth was measured in situ at each site at the time of sampling to the nearest 10 cm.&nbsp;&nbsp;</p>
<p>Seagrass tissue from the cores was separated and rinsed with clean freshwater. Seagrass was sorted by species (Zostera marina and Halodule wrightii). All shoots were enumerated to assess species-specific density and the first 20 shoots from each species were measured to assess maximum canopy height (rounded to the nearest mm). Seagrass was then sorted according to above and below-ground biomass; the above-ground biomass of each species was dried at 60 C for 48 h and weighed to the nearest 0.01 g.&nbsp;<br />
<br />
The core (30-cm diameter, PVC) was gently placed by hand at each site and pushed down to a constant depth of 10 cm into the sediment.&nbsp; The core was gently rotated to break seagrass rhizomes, then dug out by hand, lifted, and placed into a resealable 1.5-gallon plastic bag. The sample was transported back to the laboratory on ice.&nbsp;</p>
<p>Shoot heights we averaged across (up to) 20 shoots measured within each core.&nbsp; Mean shoot height per core was calculated using a pivot table in Excel.&nbsp;</p>
Specified by the Principal Investigator(s)
BCO-DMO Data Manager Processing Notes:
* added a conventional header with dataset name, PI name, version date
* lat and lon rounded to five decimal places
* gram and mm measurement columns rounded to two decimal places.
* date format converted to ISO 8601 standard format yyyy-mm-dd
* data values that were a period, indicating no value, changed to the default missing data identifier in BCO-DMO, "nd" meaning "no data."
data version 2 (2019-06-14) replaces data version 1:
* cells with just a period as a value replaced will no-data values. No-data values in this dataset are displayed as the missing data identifier "nd" for "no data" in the BCO-DMO system.
* Date for CP65 changed from 2015-07-16 to 2013-07-16
Specified by the Principal Investigator(s)
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
Garmin 72H handheld unit (Garmin International, Olathe, Kansas, USA)
Garmin 72H handheld unit (Garmin International, Olathe, Kansas, USA)
PI Supplied Instrument Name: Garmin 72H handheld unit (Garmin International, Olathe, Kansas, USA) Instrument Name: GPS receiver Instrument Short Name: Instrument Description: Acquires satellite signals and tracks your location.
This term has been deprecated. Use instead: https://www.bco-dmo.org/instrument/560