http://lod.bco-dmo.org/id/dataset/632769
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
2016-01-15
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Experimental results describing urchin survivorship in tethering experiments on rocky subtidal sites in the Galapagos Islands during 2007-2008 (GMR Trophic Cascades project)
2016-01-15
publication
2016-01-15
revision
BCO-DMO Linked Data URI
2016-01-15
creation
http://lod.bco-dmo.org/id/dataset/632769
Jon D. Witman
Brown University
principalInvestigator
Franz Smith
Brown 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: Witman, J. D., Smith, F. (2016) Experimental results describing urchin survivorship in tethering experiments on rocky subtidal sites in the Galapagos Islands during 2007-2008 (GMR Trophic Cascades project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2016-01-15 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/632769 [access date]
Urchin survivorship from tethering experiments at rocky subtidal sites in the Galápagos Islands during 2007 – 2008. Dataset Description: <p>&nbsp;</p>
<p><strong>Related Reference:</strong></p>
<p>Witman, J.D., R.W. Lamb and J.E.K. Byrnes (2015).&nbsp;Towards an integration of scale and complexity in marine ecology 2015. Ecological Monographs 85: 475-504.</p> Methods and Sampling: <p>Data from sea urchin tethering experiments at rocky subtidal sites (10-12 m depth) in the Galapagos Islands during 2007 - 2008.&nbsp;<em>Eucidaris galapagensis</em>&nbsp;was used as prey in all trials. Data recorded by time lapse photography at 1 min intervals in Trials 1-5 and 8, and at 2 minute intervals in Trials 6 - 7.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1061475 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1061475
onGoing
Jon D. Witman
Brown University
401-863-3936
Ecology and Evolutionary Biology Department Box G-W Brown University
Providence
RI
02912
USA
Jon_Witman@brown.edu
pointOfContact
Franz Smith
Brown University
Department of Ecology and Evolutionary Biology
Providence
RI
franzinho@actrix.co.nz
pointOfContact
asNeeded
Dataset Version: 1
Unknown
trial
date_local
year
mon_local
day_local
site
lat
lon
time_local
yrday_local
ISO_DateTime_Local
survivors
theme
None, User defined
experiment id
date_local
year
month_local
day_local
site
latitude
longitude
time_local
day of year and decimal time (local time zone)
ISO_DateTime_Local
count
featureType
BCO-DMO Standard Parameters
Camera
instrument
BCO-DMO Standard Instruments
Witman_2012
service
Deployment Activity
central Galapagos Islands, Ecuador
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.
Effects of Predator Diversity on the Strength of Trophic Cascades in an Oceanic Benthic Ecosystem
http://www.witmanlab.com/predator-diversity-and-the-strength-of-trophic-cascades-gmr.html
Effects of Predator Diversity on the Strength of Trophic Cascades in an Oceanic Benthic Ecosystem
<p><em>Description from NSF award abstract:</em><br />
Predator diversity has decreased dramatically in the world's oceans due to overfishing, anthropogenic habitat destruction and possibly climate change. Yet, still unknown for most ecosystems is the importance of predator diversity and abundance for ecosystem functioning. One of the most pervasive community-wide consequences of top predators is the Trophic Cascade (TC), where herbivores are suppressed, which releases plants from consumption, thus increasing plant productivity. Recent studies have shown that the diversity of predators may reduce, increase, or have no effect on the strength of trophic cascades. The small number, to date, of experimental tests of predator diversity effects on cascade strength precludes broad generalizations vital to the development of predictive theory. Such research is limited by the lack of experimental realism due to the small number of predator species that can be manipulated in simplified mesocosms. Without more realistic species numbers, it is impossible to extrapolate results to natural ecosystems that experience losses of predator diversity.</p>
<p>To meet these challenges, and to better understand the consequences of present and changing levels of predator diversity in marine ecosystems, a series of experimental manipulations will be conducted on natural levels of predator diversity and their herbivorous sea urchin prey. The hypotheses test the ultimate effects on benthic algae, as a measure of cascade strength in oceanic benthic ecosystems of the Galapagos Marine Reserve (GMR). Because of years of protection from industrial fishing as a UNESCO World Heritage Site, and of local conservation protection as the GMR, there are diverse guilds of higher trophic level predators, such as large fish and sharks. Likewise, there is high diversity of intermediate-level fish and invertebrates that prey on sea urchins, creating an unusual opportunity for testing and developing predator diversity and Biodiversity Ecosystem Functioning theory. The overarching questions addressed in this project are: How do naturally occurring large ranges of oceanic predator diversity influence the strength of trophic cascades? and How does environmental variation and conservation protection influence these processes? The first question will be addressed in experiments manipulating both horizontal (within trophic level; urchin herbivores) and vertical (across trophic level; predators) consumer diversity and in another experiment manipulating the diversity of predatory fish and invertebrates guilds. The experiments employ open fenced treatments containing urchins but allowing access by fish and invertebrate predators of the urchins. To record natural levels of fish and invertebrate predator richness encountering the treatments, consuming the urchins and interacting with each other, the entire experimental layout will be video-recorded for up to several weeks at a time. The time-lapse cameras/lighting system is capable of day and night imaging without affecting predator behavior. A simplified manipulation to measure the influence of predator diversity on cascade strength will be replicated and video-recorded at 16 sites -- representing different levels of upwelling and conservation protection -- to place the mechanistic understanding gleaned from detailed experiments at local sites into a broader (mesoscale) context.</p>
<p><strong>Relevant References:</strong></p>
<p>Witman, J.D and F. Smith. 2003. Rapid community change at a tropical upwelling site in the Galapagos Marine Reserve. Biodiversity and Conservation 12: 25-45</p>
<p>Witman, J.D., M. Brandt and F. Smith 2010. Coupling between subtidal prey and consumers along a mesoscale upwelling gradient in the Galapagos Islands. Ecological Monographs 80: 153-177.</p>
GMR Trophic Cascades
largerWorkCitation
project
eng; USA
biota
oceans
central Galapagos Islands, Ecuador
-90.38498
-90.14065
-1.23683
-0.41155
2007-05-18
2008-07-03
Galapagos Islands, Ecuador 00 33.953 S; 90 08.493 W
0
BCO-DMO catalogue of parameters from Experimental results describing urchin survivorship in tethering experiments on rocky subtidal sites in the Galapagos Islands during 2007-2008 (GMR Trophic Cascades 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/632788.rdf
Name: trial
Units: unitless
Description: <p>trial identification number</p>
http://lod.bco-dmo.org/id/dataset-parameter/632789.rdf
Name: date_local
Units: yyyy-mm-dd
Description: <p>date; local time</p>
http://lod.bco-dmo.org/id/dataset-parameter/632790.rdf
Name: year
Units: yyyy
Description: <p>year</p>
http://lod.bco-dmo.org/id/dataset-parameter/632791.rdf
Name: mon_local
Units: mm
Description: <p>month; local time</p>
http://lod.bco-dmo.org/id/dataset-parameter/632792.rdf
Name: day_local
Units: dd
Description: <p>day; local time</p>
http://lod.bco-dmo.org/id/dataset-parameter/632793.rdf
Name: site
Units: unitless
Description: <p>site name</p>
http://lod.bco-dmo.org/id/dataset-parameter/632794.rdf
Name: lat
Units: decimal degrees
Description: <p>latitude; north is positive</p>
http://lod.bco-dmo.org/id/dataset-parameter/632795.rdf
Name: lon
Units: decimal degrees
Description: <p>lonitude; east is positive</p>
http://lod.bco-dmo.org/id/dataset-parameter/632796.rdf
Name: time_local
Units: HHMM
Description: <p>local time</p>
http://lod.bco-dmo.org/id/dataset-parameter/632797.rdf
Name: yrday_local
Units: unitless
Description: <p>local day and decimal time. eg. 326.5 = 326th day of the year or November 22 at 1200 hours (noon)</p>
http://lod.bco-dmo.org/id/dataset-parameter/632798.rdf
Name: ISO_DateTime_Local
Units: YYYY-MM-DDTHH:MM:SS
Description: <p>Date/Time (Local) ISO formatted</p>
http://lod.bco-dmo.org/id/dataset-parameter/632799.rdf
Name: survivors
Units: urchins
Description: <p>number of live urchins remaining</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
388958
https://datadocs.bco-dmo.org/file/oAAmBEwuvyJwyJ/urchin_suvivorship.csv
urchin_suvivorship.csv
Primary data file for dataset ID 632769
download
https://osprey.bco-dmo.org/dataset/632769/data/download
download
onLine
dataset
<p>Data from sea urchin tethering experiments at rocky subtidal sites (10-12 m depth) in the Galapagos Islands during 2007 - 2008.&nbsp;<em>Eucidaris galapagensis</em>&nbsp;was used as prey in all trials. Data recorded by time lapse photography at 1 min intervals in Trials 1-5 and 8, and at 2 minute intervals in Trials 6 - 7.</p>
Specified by the Principal Investigator(s)
<p>Data are raw, with no processing.</p>
<p><strong>BCO-DMO Processing:</strong></p>
<p>- added conventional header with dataset name, PI name, version date, reference information<br />
- renamed parameters to BCO-DMO standard<br />
- reformatted data to a flat file<br />
- added yearday_local and ISO_DateTime_Local for plotting purposes<br />
- added to add lat/lon<br />
- changed format of date to yyyy-mm-dd from m/d/yyyy<br />
- changed format of time from H:M:S AM/PM to HHMM</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: PI Supplied Instrument Description:GoPro digital video camera Instrument Name: Camera Instrument Short Name:camera Instrument Description: All types of photographic equipment including stills, video, film and digital systems. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/311/
Deployment: Witman_2012
Witman_2012
Unknown Platform
Unknown Platform