http://lod.bco-dmo.org/id/dataset/641615
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
2016-04-01
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Relative growth rate of Gracilaria in Charleston Harbor, South Carolina in 2013 (Gracilaria effects project)
2016-04-07
publication
2016-04-07
revision
BCO-DMO Linked Data URI
2016-04-07
creation
http://lod.bco-dmo.org/id/dataset/641615
James E. Byers
University of Georgia
principalInvestigator
Erik Sotka
College of Charleston
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: Sotka, E., Byers, J. E. (2016) Relative growth rate of Gracilaria in Charleston Harbor, South Carolina in 2013 (Gracilaria effects project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). Version Date 2016-04-07 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/641615 [access date]
Data for Kollars etal (2016) MEPS Figure 2B: Relative growth rate of Gracilaria in Charleston Harbor SC along a tidal gradient across three seasons Dataset Description: Methods and Sampling: <p><strong>Study sites</strong><br />
We conducted field surveys and experiments near Charleston, South Carolina (SC) (Fort Johnson: 32.751305°N, 79.90142°W; Stono River: 32.75253°N, 80.0076° W) and Savannah, Georgia (GA) (Priest’s Landing: 31.96012° N, 81.01223°W; Bull’s River: 31.97458°N, 80.92287°W) in the USA. The hydro- dynamic forces in southeastern estuaries generate high turbidity and fluid soft sediments which reduce light attenuation and thus create a habitat that is largely inhospitable to macrophyte attachment and persistence (Byers et al. 2012 and references therein). Gracilaria invaded SC and GA estuaries in the early 2000s (E. E. Sotka unpubl. data), and on intertidal mudflats where Diopatra worms are common, Gracilaria presently represents 90-99% of the total macroalgal biomass (Byers et al. 2012). The green alga Ulva sp. can be found in colder months and attached to oyster shells, wooden debris, the hard calcareous tubes of the soda-straw worm and only rarely on Diopatra tubes (Berke 2012; N. M. Kollars, E. E. Sotka &amp; C. Plante pers. obs.). Other macroalgae present in the system include red algae that are epiphytic on Gracilaria (of the genera Polysiphonia and Ceramium; Berke 2012, C. E. Gerstenmaier and E. E. Sotka pers. obs.) and rarely, Gracilaria tikvahiae (Berke 2012, N. M. Kollars &amp; E. E. Sotka pers. obs.). The non-native Gracilaria and native Diopatra are both rare within the salt marshes and oyster beds that fringe the upper-intertidal edge of these mudflats. We performed all laboratory experiments within the Grice Marine Laboratory (College of Charleston, SC, USA). See related reference for citations.</p>
<p><strong>Tidal growth</strong></p>
<p>We measured the growth of Gracilaria at 3 tidal heights of the Fort Johnson mudflat (‘high’, approx. +0.61 m MLLW; ‘mid’ approx. +0.09 m MLLW; and ‘low’ approx. -0.02 to -0.09 m MLLW) during the spring (March-April; n = 3 per tidal height), summer (July-August, n = 5 per tidal height), and fall (September- October, n = 8 per tidal height) of 2013. At each tidal height, we strung a 3.00 g (± 0.05, acceptable range of variation) blotted wet mass piece of Gracilaria (predominantly collected from the mid-intertidal at ~0.0 m MLLW) through the end of a 15 cm piece of a 0.76 cm diameter 3-strand rope, attached the rope to a 30 cm long × 0.76 cm diameter PVC-post, and drove the post into the sediment until the seaweed laid on the surface of the benthos (see photograph of a replicate before transplantation in Supplement 1A at http://www.int-res.com/articles/suppl/m545p135_supp/). During the spring assay, we enclosed the seaweed within flexible mesh bags (1.5 cm mesh size) constructed from wildlife fencing and zipties to protect the biomass from potential loss due to water flow. We observed few broken-off Gracilaria fragments present in the bags at the end of the spring assay, and therefore, we did not enclose the seaweed in the summer or fall assays. After 4-6 wk, we recovered and defaunated the seaweed and calculated change in wet mass as relative growth rate per week (hereafter RGR; Hoffmann &amp; Poorter 2002).</p>
<p>To measure Gracilaria growth along a water-depth gradient of the subtidal zone, we weaved seaweed pieces of 3.00 g (± 0.05, acceptable range of variation) blotted wet mass through rope and attached the rope pieces (n = 5) at 2.5 m intervals along a 10 m rope strung vertically between a surface buoy and a cement block. We enclosed the seaweed within mesh bags (1.5 cm mesh size) as in the spring intertidal assay. We lowered the buoy-rope-block system onto the benthos at 9 replicate locations of ~10 m depth (at high tide) in Charleston Harbor within 7.3 km of the Fort Johnson site. With this design, the pieces of seaweed at the ‘0 m’ mark remained just below the surface of the water, regardless of fluctuations in tidal height. Because Charles ton Harbor has an average tidal range of ~2 m, the other 4 chosen depths fluctuated with the tidal cycle and the true depth ranges were estimated at 0.5-2.5, 3-5, 5.5-7.5, and 8-10 m. After 8 wk (February through April 2013), we recovered and defaunated the seaweed pieces, measured blotted wet mass, and calculated RGR as before.</p>
<p><strong>Related Reference:</strong><br />
Kollars, N.M., J.E. Byers and E.E. Sotka (2016) Invasive decor: an association between a native decorator worm and a non-native seaweed can be mutualistic. Marine Ecology Progress Series (DOI: 10.3354/meps11602)</p>
<p><strong>Related Datasets:</strong><br />
<a href="http://www.bco-dmo.org/dataset/641577">MEPS_2016: Fig.2A - survey</a><br />
<a href="http://www.bco-dmo.org/dataset/641628">MEPS_2016: Fig.3 - growth rate and depth</a><br />
<a href="http://www.bco-dmo.org/dataset/641641">MEPS_2016: Fig.4A - worm growth</a><br />
<a href="http://www.bco-dmo.org/dataset/641654">MEPS_2016: Fig.4B - stable isotopes</a><br />
<a href="http://www.bco-dmo.org/dataset/641667">MEPS_2016: Fig.5A - field expt 2012</a><br />
<a href="http://www.bco-dmo.org/dataset/641680">MEPS_2016: Fig.5B - field expt 2013</a></p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1057707 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1057707
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1057713 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1057713
completed
James E. Byers
University of Georgia
706-583-0012
Odum School of Ecology 140 E. Green St.
Athens
GA
30602
USA
jebyers@uga.edu
pointOfContact
Erik Sotka
College of Charleston
843-953-9191
Grice Marine Laboratory 205 Fort Johnson Road
Charleston
SC
29412
USA
SotkaE@cofc.edu
pointOfContact
asNeeded
Unknown
site
lat
lon
plot
season
height_ft
height_m
wetmass
RGR
theme
None, User defined
site
latitude
longitude
season
tide
weight
growth
featureType
BCO-DMO Standard Parameters
scale or balance
instrument
BCO-DMO Standard Instruments
Sotka_2013
service
Deployment Activity
Georgia and South Carolina coasts
place
Locations
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.
Cascading effects of an invasive seaweed on estuarine food webs of the southeastern US
https://osprey.bco-dmo.org/project/564687
Cascading effects of an invasive seaweed on estuarine food webs of the southeastern US
<p><em>Description from NSF award abstract:</em><br />
During the last decade, the Asian seaweed, <em>Gracilaria vermiculophylla</em>, has proliferated along high-salinity mudflats in several Georgia and South Carolina estuaries. The invasion is noteworthy because the mudflats in these estuaries were historically devoid of macrophyte-based primary production and structure. <em>Gracilaria</em> has few native analogues in these mudflat environments, and thus represents an opportunity to examine the ecosystem consequences of an invasion within an historically-unexploited niche. In theory, <em>Gracilaria</em> affects populations of species that are directly dependent on the invader for structure and food, as well as altering community- and ecosystem-level processes such as detrital production and food web structure. Through a combination of manipulative field experiments, laboratory assays and stable isotope analysis, the investigators will test three mechanisms by which <em>Gracilaria</em> influences native community structure. The novel structure and primary production generated by <em>Gracilaria vermiculophylla</em> may be 1) increasing rates of secondary production, 2) increasing levels of mudflat microbial production through leeching of dissolved nutrients, and 3) increasing detrital input to microbial and macrobial food webs.</p>
<p>This project will provide a mechanistic understanding of the multiple cascading impacts of an invasive species within the estuarine community. Species invasions that alter ecosystem functions are usually the most profound. These alterations are often generated by a small number of invaders that create physical structure, including important biogenic habitat, de novo. By altering physical structure, these non-native ecosystem engineers alter local abiotic conditions, interactions between species, and species composition. Highly influential invaders may also change food web structure and trophic flow of energy and materials. Such substantive food web changes can occur when an influential invader provides nutrients or resources that are different in quality, quantity or both. An invasive species that both provisions new physical structure and fundamentally alters food web structure could exert an overwhelming influence on native communities when these mechanisms act in synergy.</p>
Gracilaria effects
largerWorkCitation
project
eng; USA
biota
oceans
Georgia and South Carolina coasts
-79.90142
-79.90142
32.751305
32.751305
2016-04-07
Georgia and South Carolina coasts
0
BCO-DMO catalogue of parameters from Relative growth rate of Gracilaria in Charleston Harbor, South Carolina in 2013 (Gracilaria effects 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
http://lod.bco-dmo.org/id/dataset-parameter/642007.rdf
Name: site
Units: unitless
Description: <p>position in Charleston Harbor SC: FJ= Fort Johnson</p>
http://lod.bco-dmo.org/id/dataset-parameter/642008.rdf
Name: lat
Units: decimal degrees
Description: <p>latitude; north is positive</p>
http://lod.bco-dmo.org/id/dataset-parameter/642009.rdf
Name: lon
Units: decimal degrees
Description: <p>longitude; east is positive</p>
http://lod.bco-dmo.org/id/dataset-parameter/642010.rdf
Name: plot
Units: unitless
Description: <p>unique plot identification number</p>
http://lod.bco-dmo.org/id/dataset-parameter/642011.rdf
Name: season
Units: unitless
Description: <p>season the data was sampled (see manuscript for details)</p>
http://lod.bco-dmo.org/id/dataset-parameter/642012.rdf
Name: height_ft
Units: feet
Description: <p>tidal height in feet</p>
http://lod.bco-dmo.org/id/dataset-parameter/642013.rdf
Name: height_m
Units: meters
Description: <p>tidal height in meters</p>
http://lod.bco-dmo.org/id/dataset-parameter/642014.rdf
Name: wetmass
Units: grams
Description: <p>final wet mass of field-outplanted experimental units with an initial mass of 3.00 g</p>
http://lod.bco-dmo.org/id/dataset-parameter/642015.rdf
Name: RGR
Units: percent per week
Description: <p>relative growth rate</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
2538
https://datadocs.bco-dmo.org/file/933jzxMIkpB65A/Kollars_fig2B.csv
Kollars_fig2B.csv
Primary data file for dataset ID 641615
download
https://osprey.bco-dmo.org/dataset/641615/data/download
download
onLine
dataset
<p><strong>Study sites</strong><br />
We conducted field surveys and experiments near Charleston, South Carolina (SC) (Fort Johnson: 32.751305°N, 79.90142°W; Stono River: 32.75253°N, 80.0076° W) and Savannah, Georgia (GA) (Priest’s Landing: 31.96012° N, 81.01223°W; Bull’s River: 31.97458°N, 80.92287°W) in the USA. The hydro- dynamic forces in southeastern estuaries generate high turbidity and fluid soft sediments which reduce light attenuation and thus create a habitat that is largely inhospitable to macrophyte attachment and persistence (Byers et al. 2012 and references therein). Gracilaria invaded SC and GA estuaries in the early 2000s (E. E. Sotka unpubl. data), and on intertidal mudflats where Diopatra worms are common, Gracilaria presently represents 90-99% of the total macroalgal biomass (Byers et al. 2012). The green alga Ulva sp. can be found in colder months and attached to oyster shells, wooden debris, the hard calcareous tubes of the soda-straw worm and only rarely on Diopatra tubes (Berke 2012; N. M. Kollars, E. E. Sotka &amp; C. Plante pers. obs.). Other macroalgae present in the system include red algae that are epiphytic on Gracilaria (of the genera Polysiphonia and Ceramium; Berke 2012, C. E. Gerstenmaier and E. E. Sotka pers. obs.) and rarely, Gracilaria tikvahiae (Berke 2012, N. M. Kollars &amp; E. E. Sotka pers. obs.). The non-native Gracilaria and native Diopatra are both rare within the salt marshes and oyster beds that fringe the upper-intertidal edge of these mudflats. We performed all laboratory experiments within the Grice Marine Laboratory (College of Charleston, SC, USA). See related reference for citations.</p>
<p><strong>Tidal growth</strong></p>
<p>We measured the growth of Gracilaria at 3 tidal heights of the Fort Johnson mudflat (‘high’, approx. +0.61 m MLLW; ‘mid’ approx. +0.09 m MLLW; and ‘low’ approx. -0.02 to -0.09 m MLLW) during the spring (March-April; n = 3 per tidal height), summer (July-August, n = 5 per tidal height), and fall (September- October, n = 8 per tidal height) of 2013. At each tidal height, we strung a 3.00 g (± 0.05, acceptable range of variation) blotted wet mass piece of Gracilaria (predominantly collected from the mid-intertidal at ~0.0 m MLLW) through the end of a 15 cm piece of a 0.76 cm diameter 3-strand rope, attached the rope to a 30 cm long × 0.76 cm diameter PVC-post, and drove the post into the sediment until the seaweed laid on the surface of the benthos (see photograph of a replicate before transplantation in Supplement 1A at http://www.int-res.com/articles/suppl/m545p135_supp/). During the spring assay, we enclosed the seaweed within flexible mesh bags (1.5 cm mesh size) constructed from wildlife fencing and zipties to protect the biomass from potential loss due to water flow. We observed few broken-off Gracilaria fragments present in the bags at the end of the spring assay, and therefore, we did not enclose the seaweed in the summer or fall assays. After 4-6 wk, we recovered and defaunated the seaweed and calculated change in wet mass as relative growth rate per week (hereafter RGR; Hoffmann &amp; Poorter 2002).</p>
<p>To measure Gracilaria growth along a water-depth gradient of the subtidal zone, we weaved seaweed pieces of 3.00 g (± 0.05, acceptable range of variation) blotted wet mass through rope and attached the rope pieces (n = 5) at 2.5 m intervals along a 10 m rope strung vertically between a surface buoy and a cement block. We enclosed the seaweed within mesh bags (1.5 cm mesh size) as in the spring intertidal assay. We lowered the buoy-rope-block system onto the benthos at 9 replicate locations of ~10 m depth (at high tide) in Charleston Harbor within 7.3 km of the Fort Johnson site. With this design, the pieces of seaweed at the ‘0 m’ mark remained just below the surface of the water, regardless of fluctuations in tidal height. Because Charles ton Harbor has an average tidal range of ~2 m, the other 4 chosen depths fluctuated with the tidal cycle and the true depth ranges were estimated at 0.5-2.5, 3-5, 5.5-7.5, and 8-10 m. After 8 wk (February through April 2013), we recovered and defaunated the seaweed pieces, measured blotted wet mass, and calculated RGR as before.</p>
<p><strong>Related Reference:</strong><br />
Kollars, N.M., J.E. Byers and E.E. Sotka (2016) Invasive decor: an association between a native decorator worm and a non-native seaweed can be mutualistic. Marine Ecology Progress Series (DOI: 10.3354/meps11602)</p>
<p><strong>Related Datasets:</strong><br />
<a href="http://www.bco-dmo.org/dataset/641577">MEPS_2016: Fig.2A - survey</a><br />
<a href="http://www.bco-dmo.org/dataset/641628">MEPS_2016: Fig.3 - growth rate and depth</a><br />
<a href="http://www.bco-dmo.org/dataset/641641">MEPS_2016: Fig.4A - worm growth</a><br />
<a href="http://www.bco-dmo.org/dataset/641654">MEPS_2016: Fig.4B - stable isotopes</a><br />
<a href="http://www.bco-dmo.org/dataset/641667">MEPS_2016: Fig.5A - field expt 2012</a><br />
<a href="http://www.bco-dmo.org/dataset/641680">MEPS_2016: Fig.5B - field expt 2013</a></p>
Specified by the Principal Investigator(s)
<p>Because the residuals of the field survey and the intertidal and subtidal RGR assays were non-normally distributed, we analyzed differences among factors with non-parametric permutation tests and 1000 permutation replicates (Anderson 2001). We removed from analyses replicates in which all seaweed biomass was lost during the experiment (only 4% of replicates per assay) under the assumption that any biomass loss was due to methodological errors rather than a reflection of habitat conditions. In the intertidal RGR assay, we tested the interaction between season and tidal height with unrestricted data (Anderson 2001). Post-hoc significant differences were determined using a series of pairwise permutation tests. All statistical analyses were performed in R (version 2.15.1; R Core Team 2012). See related reference for citations.</p>
<p><strong>BCO-DMO Processing:</strong><br />
- added conventional header with dataset name, PI name, version date, reference information<br />
- renamed parameters to BCO-DMO standard<br />
- reduced excess number of digits after decimal<br />
- replaced NA with nd<br />
- added lat and lon</p>
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
PI Supplied Instrument Name: Instrument Name: scale or balance Instrument Short Name: Instrument Description: Devices that determine the mass or weight of a sample. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB13/
Deployment: Sotka_2013
Sotka_2013
Coll_Charleston
shoreside
Sotka_2013
Erik Sotka
College of Charleston
Coll_Charleston
shoreside