http://lod.bco-dmo.org/id/dataset/942763
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
2024-11-01
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Urchin Barren Characterization Data before Installment of Experimental Pycnopodia Cages in the Sitka Sound during February 2023 (High latitude kelp dynamics project)
2024-11-01
publication
2024-11-01
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2025-05-28
publication
https://doi.org/10.26008/1912/bco-dmo.942763.1
Kristy J. Kroeker
University of California-Santa Cruz
principalInvestigator
Aaron W.E. Galloway
University of Oregon
principalInvestigator
Sarah Gravem
Oregon State University
principalInvestigator
Peter T. Raimondi
University of California-Santa Cruz
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: Kroeker, K. J., Mancuso, R., Gravem, S., Campbell, R., Hunter, N., Raimondi, P., Galloway, A. (2025) Urchin Barren Characterization Data before Installment of Experimental Pycnopodia Cages in the Sitka Sound during February 2023 (High latitude kelp dynamics project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2024-11-01 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.942763.1 [access date]
Urchin barren characterization before installment of experimental Pycnopodia cages in Sitka Sound, February 2023 Dataset Description: Methods and Sampling: <p dir="ltr"><strong>Surveys</strong></p>
<p>Three urchin barren sites, Ellsworth Cut (57.036, -135.280), Harris Island (57.033, -135.277), and Whale Park (57.033, -135.255), were identified as potential sites for Pycnopodia experiments because they all had transitioned in the last several years from kelp-dominated habitats to barren. Sites were qualitatively similar in rugosity (low rugosity), substrate (bedrock, with some boulder and cobbles), and depth (6-9m). In order to better characterize the shifting state of these subtidal environments before experimental manipulation, we surveyed the density and size structure of dominant grazers (H. kamtschatkana, M. franciscanus and S. droebachiensis) at each site using a swath approach on SCUBA (2 x 30m at Ellsworth Cut and Harris Island, and 2 x 15m at Whale Point). Urchin test diameters and longest abalone shell lengths were measured with calipers.</p>
<p><strong>Gonad Indices</strong></p>
<p>We also compared the gonad indices of randomly collected red sea urchins (M. franciscanus) at our three sites to an intact kelp forest reference site (Magic Island; 57.098, -135.401) about ~12 km away from the nearest experimental site. We measured the gonad index of M. franciscanus individuals from each site (N = 9-11) as: [wet mass of gonadal tissue/ total mass of the organism]*100.</p>
<p><strong>Analysis</strong></p>
<p>Mean and standard deviation of density and size were calculated for each species at all three barren sites with each 10m2 block of the swath surveys acting as a replicate. H. kamtchatkana was dropped from analysis for low replication. Two sample independent t-tests were used to compare means and variances between urchin species groups for density and size across sites. Gonad index was calculated and averaged for each barren site and the singular kelp forest site. T-tests were similarly used to compare average gonad content in barren sites versus the kelp forest site.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1752600 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1752600
completed
Kristy J. Kroeker
University of California-Santa Cruz
831-566-8253
100 Shaffer Road
Santa Cruz
CA
95060
USA
kkroeker@ucsc.edu
pointOfContact
Aaron W.E. Galloway
University of Oregon
agallow3@uoregon.edu
pointOfContact
Sarah Gravem
Oregon State University
sgravem@calpoly.edu
pointOfContact
Peter T. Raimondi
University of California-Santa Cruz
831-459-5674
Dept. of Ecology and Evolutionary Biology 100 Schaffer Road
Santa Cruz
CA
95060
USA
raimondi@ucsc.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Lat
Long
Site
ISO_DateTime
Date
Time
Diver
Meter_marks
Species
Scientific_Name
Count
Area_m2
Density_m2
notes
theme
None, User defined
latitude
longitude
site
ISO_DateTime_UTC
date
time_local
person name
experiment id
species scientific name (binomial)
count
area
density
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.
CAREER: Energy fluxes and community stability in a dynamic, high-latitude kelp ecosystem
https://osprey.bco-dmo.org/project/756735
CAREER: Energy fluxes and community stability in a dynamic, high-latitude kelp ecosystem
<p><em>NSF Award Abstract:</em><br />
High latitude kelp forests support a wealth of ecologically and economically important species, buffer coastlines from high-energy storms, and play a critical role in the marine carbon cycle by sequestering and storing large amounts of carbon. Understanding how energy fluxes and consumer-resource interactions vary in these kelp communities is critical for defining robust management strategies that help maintain these valuable ecosystem services. In this integrated research and education program, the project team will investigate how consumer populations respond to variability in temperature, carbonate chemistry and resource quality to influence the food webs and ecosystem stability of kelp forests. A comprehensive suite of studies conducted at the northern range limit for giant kelp (Macrocystis pyrifera) in SE Alaska will examine how kelp communities respond to variable environmental conditions arising from seasonal variability and changing ocean temperature and acidification conditions. As part of this project, undergraduate and high school students will receive comprehensive training through (1) an immersive field-based class in Sitka Sound, Alaska, (2) intensive, mentored research internships, and (3) experiential training in science communication and public outreach that will include a variety of opportunities to disseminate research findings through podcasts, public lectures and radio broadcasts.</p>
<p>Consumer-resource interactions structure food webs and govern ecosystem stability, yet our understanding of how these important interactions may change under future climatic conditions is hampered by the complexity of direct and indirect effects of multiple stressors within and between trophic levels. For example, environmentally mediated changes in nutritional quality and chemical deterrence of primary producers have the potential to alter herbivory rates and energy fluxes between primary producers and consumers, with implications for ecosystem stability. Moreover, the effects of global change on primary producers are likely to depend on other limiting resources, such as light and nutrients, which vary seasonally in dynamic, temperate and high latitude ecosystems. In marine ecosystems at high latitude, climate models predict that ocean acidification will be most pronounced during the winter months, when primary production is limited by light. This project is built around the hypothesis that there could be a mismatch in the energetic demands of primary consumers caused by warming and ocean acidification and resource availability and quality during winter months, with cascading effects on trophic structure and ecosystem stability in the future. Through complementary lab and field experiments, the project team will determine 1) how temperature and carbonate chemistry combine to affect primary consumer bioenergetics across a diversity of species and 2) the indirect effects of ocean acidification and warming on primary consumers via environmentally mediated changes in the availability, nutritional quality and palatability of primary producers across seasons. Using the data from the laboratory and field experiments, the project team will 3) construct a model of the emergent effects of warming and ocean acidification on trophic structure and ecosystem stability in seasonally dynamic, high latitude environments.</p>
<p>This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.</p>
High latitude kelp dynamics
largerWorkCitation
project
eng; USA
oceans
-135.28
-135.255
57.033
57.036
2023-02-11
2023-02-20
SE Alaskan coastal waters
0
BCO-DMO catalogue of parameters from Urchin Barren Characterization Data before Installment of Experimental Pycnopodia Cages in the Sitka Sound during February 2023 (High latitude kelp dynamics 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/943378.rdf
Name: Lat
Units: decimal degrees
Description: <p>Latitude</p>
http://lod.bco-dmo.org/id/dataset-parameter/943379.rdf
Name: Long
Units: decimal degrees
Description: <p>Longitude</p>
http://lod.bco-dmo.org/id/dataset-parameter/943380.rdf
Name: Site
Units: unitless
Description: <p>Urchin barren site name.</p>
http://lod.bco-dmo.org/id/dataset-parameter/943381.rdf
Name: ISO_DateTime
Units: unitless
Description: <p>Date time in UTC.</p>
http://lod.bco-dmo.org/id/dataset-parameter/943382.rdf
Name: Date
Units: unitless
Description: <p>YYYY-MM-DD, AKST (Alaska Standard Time), UTC-9.</p>
http://lod.bco-dmo.org/id/dataset-parameter/943383.rdf
Name: Time
Units: unitless
Description: <p>HH:MM, AKST (Alaska Standard Time), UTC-9.</p>
http://lod.bco-dmo.org/id/dataset-parameter/943384.rdf
Name: Diver
Units: unitless
Description: <p>Diver identity.</p>
http://lod.bco-dmo.org/id/dataset-parameter/943385.rdf
Name: Meter_marks
Units: unitless
Description: <p>5mx2m block along 30m long transect that diver sampled.</p>
http://lod.bco-dmo.org/id/dataset-parameter/943386.rdf
Name: Species
Units: unitless
Description: <p>Grazer species (HALIKAM=Haliotis kamtschatkana, STRODRO= Strongylocentrotus droebachiensis, STROFRAN=Mesocentrotus franciscanus).</p>
http://lod.bco-dmo.org/id/dataset-parameter/943387.rdf
Name: Scientific_Name
Units: unitless
Description: <p>Scientific name of represented species in this data file.</p>
http://lod.bco-dmo.org/id/dataset-parameter/943388.rdf
Name: Count
Units: individual
Description: <p>Count of corresponding species in that block of swath.</p>
http://lod.bco-dmo.org/id/dataset-parameter/943389.rdf
Name: Area_m2
Units: meters squared (m2)
Description: <p>Area sample for respective count and size data, if <10 diver subsampled due to high urchin density.</p>
http://lod.bco-dmo.org/id/dataset-parameter/943390.rdf
Name: Density_m2
Units: meters squared (m-2)
Description: <p>Count of grazer species divided by sampled area.</p>
http://lod.bco-dmo.org/id/dataset-parameter/943391.rdf
Name: notes
Units: unitless
Description: <p>Field notes.</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
5351
https://darchive.mblwhoilibrary.org/server/api/core/bitstreams/2f5e8704-ffb9-4175-b7f3-d11e2305cd73/content
download
https://doi.org/10.26008/1912/bco-dmo.942763.1
download
onLine
dataset
<p dir="ltr"><strong>Surveys</strong></p>
<p>Three urchin barren sites, Ellsworth Cut (57.036, -135.280), Harris Island (57.033, -135.277), and Whale Park (57.033, -135.255), were identified as potential sites for Pycnopodia experiments because they all had transitioned in the last several years from kelp-dominated habitats to barren. Sites were qualitatively similar in rugosity (low rugosity), substrate (bedrock, with some boulder and cobbles), and depth (6-9m). In order to better characterize the shifting state of these subtidal environments before experimental manipulation, we surveyed the density and size structure of dominant grazers (H. kamtschatkana, M. franciscanus and S. droebachiensis) at each site using a swath approach on SCUBA (2 x 30m at Ellsworth Cut and Harris Island, and 2 x 15m at Whale Point). Urchin test diameters and longest abalone shell lengths were measured with calipers.</p>
<p><strong>Gonad Indices</strong></p>
<p>We also compared the gonad indices of randomly collected red sea urchins (M. franciscanus) at our three sites to an intact kelp forest reference site (Magic Island; 57.098, -135.401) about ~12 km away from the nearest experimental site. We measured the gonad index of M. franciscanus individuals from each site (N = 9-11) as: [wet mass of gonadal tissue/ total mass of the organism]*100.</p>
<p><strong>Analysis</strong></p>
<p>Mean and standard deviation of density and size were calculated for each species at all three barren sites with each 10m2 block of the swath surveys acting as a replicate. H. kamtchatkana was dropped from analysis for low replication. Two sample independent t-tests were used to compare means and variances between urchin species groups for density and size across sites. Gonad index was calculated and averaged for each barren site and the singular kelp forest site. T-tests were similarly used to compare average gonad content in barren sites versus the kelp forest site.</p>
Specified by the Principal Investigator(s)
- Added a column "ISO_Datetime" from the separate date and time columns (the original columns have been retained within the data file)
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