http://lod.bco-dmo.org/id/dataset/653838
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
2016-08-11
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Sessile community structure with and without whelk and Leptasterias predators following Seastar Wasting Disease, coastal Oregon, 2014-2015
2016-08-11
publication
2016-08-11
revision
BCO-DMO Linked Data URI
2016-08-11
creation
http://lod.bco-dmo.org/id/dataset/653838
Bruce A. Menge
Oregon State University
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: Menge, B. A. (2016) Sessile community structure with and without whelk and Leptasterias predators following Seastar Wasting Disease, coastal Oregon, 2014-2015. Biological and Chemical Oceanography Data Management Office (BCO-DMO). Version Date 2016-08-11 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/653838 [access date]
Sessile community structure with and without whelk and Leptasterias predators following Seastar Wasting Disease, coastal Oregon, 2014-2015 Dataset Description: <p>Data are from an experiment measuring sessile community structure with and without whelk and <em>Leptasterias </em>predators following sea star wasting disease. The experiment was run at two sites from June 2014 to May 2015.</p>
<p><strong>Related Reference:</strong><br />
Elizabeth B. Cerny-Chipman, Jenna M. Sullivan, and Bruce A. Menge. Whelk predators exhibit limited population responses and community effects following disease-driven declines of the keystone sea star <em>Pisaster ochraceus. </em>In Revision: MEPS.</p>
<p><strong>Related Datasets:</strong><br />
<a href="http://www.bco-dmo.org/dataset/653966">Prey percent covers</a><br />
<a href="http://www.bco-dmo.org/dataset/653942">Whelk size distributions: counts</a><br />
<a href="http://www.bco-dmo.org/dataset/653924">Whelk size distributions: individuals</a><br />
<a href="http://www.bco-dmo.org/dataset/653793">Whelk surveys</a></p> Methods and Sampling: <p><strong>Study system</strong><br />
Our study included 4 sites along the Oregon coast: Strawberry Hill (44.250°N-124.115°W) and Yachats Beach (44.319°N-124.109°W), located on Cape Perpetua, and Fogarty Creek (44.837°N-124.0587°W) and Boiler Bay (44.832°N-124.061°W) located on Cape Foulweather (Fig.1). Cape Perpetua is a rocky headland adjacent to a wide continental shelf offshore that promotes retention of propagules such as larvae and phytoplankton (Menge et al. 2015). As a result, Cape Perpetua intertidal sites are characterized by high phytoplankton productivity and high recruitment of invertebrates (Menge et al. 1997, 2004, 2015). Cape Foulweather, in contrast, is characterized by a narrower offshore continental shelf, which leads to reduced retentiveness, lower invertebrate abundance, and high macrophyte abundance. Prior to the onset of SSWD, densities of P. ochraceus could be as high as 8 individuals m-2 at Cape Perpetua and 4 individuals m-2 at Cape Foulweather sites (Menge et al. 2016).</p>
<p><strong>Subordinate predator removal experiment</strong><br />
To assess the effects of subordinate predators in the absence of the keystone, we conducted a factorial removal experiment at two intertidal sites located on Cape Perpetua, Oregon (Strawberry Hill and Yachats Beach, see Fig. 1). We predicted that whelk predators would affect establishment of the dominant mussel, Mytilus californianus, by consuming the mid-successional prey species that facilitate its recruitment. As such, we chose to follow prey dynamics from a mid-successional stage by placing plots where there was abundant cover of the mussel Mytilus trossulus and several barnacle species. This mid-successional community is where we expected to see the greatest effects of subordinate predators and the largest changes in community structure following SSWD. We originally examined the effects of two groups of subordinate predators, gastropod whelks Nucella canaliculata and N. ostrina (W) and the smaller sea star Leptasterias spp. (L), in a factorial design including four treatments: &nbsp;+W +L, -W +L, +W -L, and -W -L. However, Leptasterias spp. were rare in our plots, and treatments were combined to include control (+W) and whelk removal (-W) treatments only (see data analysis section below). It is important to note that our experiment tested the effects of subordinate predators at reduced P. ochraceus densities, rather than comparing their effects in the presence or absence of P. ochraceus.</p>
<p>The main treatment plots were 0.25 m2 in size and corners were marked with stainless steel lag screws. Each main plot was surrounded by four additional subplots adjacent to each plot side that were meant to act as a buffer for the main plot. We monitored plots either bi-weekly or monthly as tides permitted from experimental initiation in June 2014 through May 2015. At each monitoring, we counted the total number of each subordinate predator species (N. canaliculata, N. ostrina, and Leptasterias spp.), as well as any less common predators, such as the whelk Nucella lamellosa, in all plots. When possible, we conducted a full monitoring with counts and removals of predators in the main plot, the four adjacent subplots, and in the corners between subplots. On some occasions, particularly during winter months with limited site access, we only monitored the main plots. All removal of whelks and Leptasterias spp. was conducted using forceps, and removed predators were relocated away from the plot area. In plots without removals, we mimicked the use of forceps in the plot while counting subordinate predators to limit the possibility that the physical action of predator removal would influence our results. Although SSWD caused declines in Pisaster ochraceus densities, it did not extirpate the species entirely from our sites. We recorded and relocated any P. ochraceus within each plot and any adult and juvenile P. ochraceus from a 3m radius around each plot.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1448913 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1448913
completed
Bruce A. Menge
Oregon State University
541-737-5358
Department of Integrative Biology 4575 SW Research Way
Corvallis
OR
97333
USA
mengeb@oregonstate.edu
pointOfContact
asNeeded
Unknown
date
site
plot
rep
treatment
direction
N_can
N_ost
Lepta
eggs
P_och_adult_inplot
P_och_juv_inplot
P_och_rec_inplot
P_och_around
P_och_incorners
comments
theme
None, User defined
date
site
sample identification
replicate
treatment
No BCO-DMO term
count
comments
featureType
BCO-DMO Standard Parameters
Menge_2014
service
Deployment Activity
coastal Oregon
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.
Partnership for Interdisciplinary Studies of Coastal Oceans
http://www.piscoweb.org/
Partnership for Interdisciplinary Studies of Coastal Oceans
The Partnership for Interdisciplinary Studies of Coastal Oceans is a long-term ecosystem research and monitoring program established with the goals of:
understanding dynamics of the coastal ocean ecosystem along the U.S. west coast
sharing that knowledge so ocean managers and policy makers can make science based decisions regarding coastal and marine stewardship
producing a new generation of scientists trained in interdisciplinary collaborative approaches
Over the last 10 years, PISCO has successfully built a unique research program that combines complementary disciplines to answer critical environmental questions and inform management and policy. Activities are conducted at the latitudinal scale of the California Current Large Marine Ecosystem along the west coast of North America, but anchored around the dynamics of coastal, hardbottom habitats and the oceanography of the nearshore ocean – among the most productive and diverse components of this ecosystem. The program integrates studies of changes in the ocean environment through ecological monitoring and experiments. Scientists examine the causes and consequences of ecosystem changes over spatial scales that are the most relevant to marine species and management, but largely unstudied elsewhere.
Findings are linked to solutions through a growing portfolio of tools for policy and management decisions. The time from scientific discovery to policy change is greatly reduced by coordinated, efficient links between scientists and key decision makers.
Core elements of PISCO are:
Interdisciplinary ecosystem science
Data archiving and sharing
Outreach to public and decision-making user groups
Interdisciplinary training
Coordination of distributed research team
Established in 1999 with funding from The David and Lucile Packard Foundation, PISCO is led by scientists from core campuses Oregon State University (OSU); Stanford University’s Hopkins Marine Station; University of California, Santa Cruz (UCSC); and University of California, Santa Barbara (UCSB). Collaborators from other institutions also contribute to leadership and development of PISCO programs. As of 2005, core PISCO activities are funded by collaborative grants from The David and Lucile Packard Foundation and the Gordon and Betty Moore Foundation. Core support, along with additional funding from diverse public and private sources, make this unique partnership possible.
PISCO
largerWorkCitation
program
Testing the rocky intertidal community consequences of the decimation of purple sea star populations along the Oregon coast by sea star wasting disease
http://www.eeb.ucsc.edu/pacificrockyintertidal/data-products/sea-star-wasting/
Testing the rocky intertidal community consequences of the decimation of purple sea star populations along the Oregon coast by sea star wasting disease
<p>This study will investigate the ecological consequences of the decimation of sea star populations by wasting disease along the Oregon coast. Hallmarks of wasting disease are the formation of sores on the sea star that progress to cause loss of arms, and ultimately death of the animal. Wasting disease was reported in sea star populations including those of the purple sea star, Pisaster ochraceus, in British Columbia, Washington, and California as early as April 2013. In Oregon, wasting was first observed in April 2014, and by June 2014 rates of infection ranged up to 80%, and sea star abundance had declined. At that rate, many populations may disappear by the end of summer 2014. Prior research has shown that in the absence of the purple sea star, mid-shore mussel populations increase, and ultimately overgrow the sea weeds and invertebrates that occur low on the shore, reducing biodiversity. However, because disease events of this magnitude have never occurred along the entire coastline, it is unclear if the small-scale expansion of mussels observed previously will be a general result of this event. One possibility is that predators unaffected by wasting, such as whelks and crabs, will increase their predation effects and blunt the expected invasion of mussels to the low shore. The research in this project will evaluate this possibility by testing the role of these alternative predators. Broader Impacts include the training of undergraduate and graduate students, the involvement of coastal residents and the production of microdocumentaries and video to document the changing context of this ecosystem.</p>
<p>The research project is designed to test three hypotheses. First, that in the absence of Pisaster ochraceus, predation by whelks will increase in strength through increases in whelk abundance and in whelk size, and at least partially compensate for the absence of Pisaster. Second, the small sea star Leptasterias spp. will also expand its role as a predator through increased size and abundance, and expansion of its habitat beyond mussel beds. Although individuals of this sea star have been observed to suffer from wasting as well, the frequency so far appears low, and it seems likely this species may persist. Third, the crab Cancer productus, normally mostly a subtidal species, will expand its range into the intertidal and help to compensate for the loss of Pisaster. Tests of these hypotheses will include manual removal experiments (whelk removal, Leptasterias removal, removal of both and of neither), cage exclusion experiments (whelk exclusions), cage inclusion-exclusion experiments (Leptasterias inclusion, Leptasterias exclusion). Experiments will be replicated with appropriate controls, and done at multiple sites on the central Oregon coast that vary naturally in population abundances, rates of prey and predator recruitment, and oceanographic conditions. Results obtained under this unprecedented set of circumstances will deepen and expand our empirical understanding of the dynamics of an iconic ecosystem, and will help parameterize community models.</p>
<p><strong>Additional Project Information: </strong><a href="http://data.piscoweb.org/marine1/seastardisease.html" target="_blank">Sea Star Wasting Map</a></p>
Sea star wasting
largerWorkCitation
project
eng; USA
biota
oceans
coastal Oregon
2016-08-11
Oregon coast
0
BCO-DMO catalogue of parameters from Sessile community structure with and without whelk and Leptasterias predators following Seastar Wasting Disease, coastal Oregon, 2014-2015
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/653893.rdf
Name: date
Units: year-month-day
Description: <p>Date of monitoring in format YYYYMMDD</p>
http://lod.bco-dmo.org/id/dataset-parameter/653894.rdf
Name: site
Units: unitless
Description: <p>One of four sites: BB=Boiler Bay; FC=Fogarty Creek; SH=Strawberry Hill; YB=Yachats Beach</p>
http://lod.bco-dmo.org/id/dataset-parameter/653895.rdf
Name: plot
Units: unitless
Description: <p>Unique ID for each experimental unit within each site (names are repeated across sites)</p>
http://lod.bco-dmo.org/id/dataset-parameter/653896.rdf
Name: rep
Units: unitless
Description: <p>Replicate number: 1-5</p>
http://lod.bco-dmo.org/id/dataset-parameter/653897.rdf
Name: treatment
Units: unitless
Description: <p>Treatment: C=control; W=whelk removal; L=Leptasterias removal; A=removal of both whelks & Leptasterias</p>
http://lod.bco-dmo.org/id/dataset-parameter/653898.rdf
Name: direction
Units: unitless
Description: <p>Direction of subplot relative to mainplot. Used to maintain consistent plot monitoring. M=main plot; N=north; E=east; S=south; W=west</p>
http://lod.bco-dmo.org/id/dataset-parameter/653899.rdf
Name: N_can
Units: individuals
Description: <p>Number of N. canaliculata in plot</p>
http://lod.bco-dmo.org/id/dataset-parameter/653900.rdf
Name: N_ost
Units: individuals
Description: <p>Number of N. ostrina in plot</p>
http://lod.bco-dmo.org/id/dataset-parameter/653901.rdf
Name: Lepta
Units: individuals
Description: <p>Number of Leptasterias spp. in plot</p>
http://lod.bco-dmo.org/id/dataset-parameter/653902.rdf
Name: eggs
Units: individuals
Description: <p>Presence or absence of whelk eggs in plot</p>
http://lod.bco-dmo.org/id/dataset-parameter/653903.rdf
Name: P_och_adult_inplot
Units: individuals
Description: <p>Number of adult P. ochraceus in plot</p>
http://lod.bco-dmo.org/id/dataset-parameter/653904.rdf
Name: P_och_juv_inplot
Units: individuals
Description: <p>Number of juvenile P. ochraceus in plot; juveniles were between 3-8 cm</p>
http://lod.bco-dmo.org/id/dataset-parameter/653905.rdf
Name: P_och_rec_inplot
Units: individuals
Description: <p>Number of P. ochraceus recruits in plot; recruits were smaller htan 3 cm</p>
http://lod.bco-dmo.org/id/dataset-parameter/653906.rdf
Name: P_och_around
Units: individuals
Description: <p>Number of P. ochraceus found within 3m of each plot</p>
http://lod.bco-dmo.org/id/dataset-parameter/653907.rdf
Name: P_och_incorners
Units: individuals
Description: <p>Number of P. ochraceus in the corner interstices between the 5 subplots; corners only monitored during full monitoring</p>
http://lod.bco-dmo.org/id/dataset-parameter/653908.rdf
Name: comments
Units: unitless
Description: <p>Relevant notes from monitoring period</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
77538
https://datadocs.bco-dmo.org/file/4WW2rE1h6v84EA/pred_removal.csv
pred_removal.csv
Primary data file for dataset ID 653838
download
https://osprey.bco-dmo.org/dataset/653838/data/download
download
onLine
dataset
<p><strong>Study system</strong><br />
Our study included 4 sites along the Oregon coast: Strawberry Hill (44.250°N-124.115°W) and Yachats Beach (44.319°N-124.109°W), located on Cape Perpetua, and Fogarty Creek (44.837°N-124.0587°W) and Boiler Bay (44.832°N-124.061°W) located on Cape Foulweather (Fig.1). Cape Perpetua is a rocky headland adjacent to a wide continental shelf offshore that promotes retention of propagules such as larvae and phytoplankton (Menge et al. 2015). As a result, Cape Perpetua intertidal sites are characterized by high phytoplankton productivity and high recruitment of invertebrates (Menge et al. 1997, 2004, 2015). Cape Foulweather, in contrast, is characterized by a narrower offshore continental shelf, which leads to reduced retentiveness, lower invertebrate abundance, and high macrophyte abundance. Prior to the onset of SSWD, densities of P. ochraceus could be as high as 8 individuals m-2 at Cape Perpetua and 4 individuals m-2 at Cape Foulweather sites (Menge et al. 2016).</p>
<p><strong>Subordinate predator removal experiment</strong><br />
To assess the effects of subordinate predators in the absence of the keystone, we conducted a factorial removal experiment at two intertidal sites located on Cape Perpetua, Oregon (Strawberry Hill and Yachats Beach, see Fig. 1). We predicted that whelk predators would affect establishment of the dominant mussel, Mytilus californianus, by consuming the mid-successional prey species that facilitate its recruitment. As such, we chose to follow prey dynamics from a mid-successional stage by placing plots where there was abundant cover of the mussel Mytilus trossulus and several barnacle species. This mid-successional community is where we expected to see the greatest effects of subordinate predators and the largest changes in community structure following SSWD. We originally examined the effects of two groups of subordinate predators, gastropod whelks Nucella canaliculata and N. ostrina (W) and the smaller sea star Leptasterias spp. (L), in a factorial design including four treatments: &nbsp;+W +L, -W +L, +W -L, and -W -L. However, Leptasterias spp. were rare in our plots, and treatments were combined to include control (+W) and whelk removal (-W) treatments only (see data analysis section below). It is important to note that our experiment tested the effects of subordinate predators at reduced P. ochraceus densities, rather than comparing their effects in the presence or absence of P. ochraceus.</p>
<p>The main treatment plots were 0.25 m2 in size and corners were marked with stainless steel lag screws. Each main plot was surrounded by four additional subplots adjacent to each plot side that were meant to act as a buffer for the main plot. We monitored plots either bi-weekly or monthly as tides permitted from experimental initiation in June 2014 through May 2015. At each monitoring, we counted the total number of each subordinate predator species (N. canaliculata, N. ostrina, and Leptasterias spp.), as well as any less common predators, such as the whelk Nucella lamellosa, in all plots. When possible, we conducted a full monitoring with counts and removals of predators in the main plot, the four adjacent subplots, and in the corners between subplots. On some occasions, particularly during winter months with limited site access, we only monitored the main plots. All removal of whelks and Leptasterias spp. was conducted using forceps, and removed predators were relocated away from the plot area. In plots without removals, we mimicked the use of forceps in the plot while counting subordinate predators to limit the possibility that the physical action of predator removal would influence our results. Although SSWD caused declines in Pisaster ochraceus densities, it did not extirpate the species entirely from our sites. We recorded and relocated any P. ochraceus within each plot and any adult and juvenile P. ochraceus from a 3m radius around each plot.</p>
Specified by the Principal Investigator(s)
<p><strong>Statistical Analyses</strong><br />
To determine whether population abundances of subordinate predators had changed from 2014 to 2015, we used negative binomial regression for survey count data, which were overdispersed, in the ‘MASS’ package (Venables &amp; Ripley 2002) in R. In this case, a full model included a site x year interaction, which was dropped if non-significant. Because 2014 had many survey time points and 2015 had fewer surveys, we tried analyzing data from all time points and also from only the July 2014 and 2015 time points. We used all survey data as results were similar in both cases. To assess spatial changes in subordinate predator distributions, we ordered quadrats by measured tide height and analyzed differences in the cumulative distributions of whelk counts between the two years using two-sample Kolmogorov-Smirnov Tests with p-values bootstrapped using the package ‘Matching’ (Sekhon 2011). For these tests, we used only matched July time points in order to minimize distributional changes due to season.</p>
<p><strong>BCO-DMO Processing:</strong><br />
- added conventional header with dataset name, PI name, version date<br />
- renamed parameters to BCO-DMO standard<br />
- reformatted date from m/d/yyyy to yyyymmdd<br />
- replaced . in specific_cover_type column with nd (no data)<br />
- sorted data by site, date, treatment, direction, replicate</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
Deployment: Menge_2014
Menge_2014
OSU
laboratory
Menge_2014
Bruce A. Menge
Oregon State University
OSU
laboratory