http://lod.bco-dmo.org/id/dataset/721758
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
2017-12-21
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Subtidal temperatures at 2 depth strata (6 and 12-15 m depth) from 12 sites in the central Galápagos Islands, Ecuador from February 2016 to February 2017 (SPONGERAPDGALPGS project)
2017-12-21
publication
2017-12-21
revision
BCO-DMO Linked Data URI
2017-12-21
creation
http://lod.bco-dmo.org/id/dataset/721758
Jon D. Witman
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. (2017) Subtidal temperatures at 2 depth strata (6 and 12-15 m depth) from 12 sites in the central Galápagos Islands, Ecuador from February 2016 to February 2017 (SPONGERAPDGALPGS project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). Version Date 2017-12-21 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/721758 [access date]
Central Galapagos subtidal temperatures Dataset Description: <p>This dataset contains subtidal temperature data from February 2016 to February 2017 at 2 depth strata (6 and 12-15 m depth) from 12 sites in the central Galápagos Islands, Ecuador (00.41100 S, 90.27525 W).</p> Methods and Sampling: <p>Temperature&nbsp;was measured&nbsp;in degrees C, sampled every 10 minutes using Onset HOBO TidbiT V2 temperature loggers.&nbsp; Site names refer to locations and columns refer to the approximate depth of logger.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1623867 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1623867
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
asNeeded
Unknown
site
lat
lon
date
time
temp_6m
temp_12_to_15m
ISO_DateTime_UTC
Onset HOBO TidbiT V2
theme
None, User defined
site
latitude
longitude
date
time of day
water temperature at measurement depth
ISO_DateTime_UTC
featureType
BCO-DMO Standard Parameters
Temperature Logger
instrument
BCO-DMO Standard Instruments
RAPDGALPGS_sites
service
Deployment Activity
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.
RAPID: Testing the ability of the 2015-2017 El Nino Southern Oscillation (ENSO) to drive a community-level regime shift in the Galapagos marine ecosystem
http://www.witmanlab.com/responses-to-el-nintildeo-events-in-galapagos-subtidal-ecosystems.html
RAPID: Testing the ability of the 2015-2017 El Nino Southern Oscillation (ENSO) to drive a community-level regime shift in the Galapagos marine ecosystem
<p><strong>NSF Award Abstract:</strong><br />
Changes in the ecological structure, biodiversity and functioning of ecosystems have occurred in all types of habitats. Sometimes the change is so large and abrupt that the ecosystem switches to an alternate state, or regime, that persists for long periods of time (i.e. decades to millennia) such as the switch between a vegetated and desert ecosystem in the Sahara. Since regime changes may drastically alter the ecosystem goods and services provided to humankind, there is a practical as well as theoretical need to understand the conditions and drivers leading to tipping points between alternate regimes. To date, little is known about either the pre-conditions or drivers of regime change, particularly in subtidal habitats where long-term data on the ecological state of communities of interacting species prior to regime change is difficult to obtain. Most of the knowledge about tropical regime shifts in marine habitats has focused on shifts between corals and macroalgae even though these organisms represent only part of a species-rich ecosystem with many possible trajectories and outcomes of regime change. Consequently, the overarching goal of the proposed investigation is to test a conceptual model developed herein predicting how both El Niño and La Niña phases of the unusually strong 2016 ENSO (El Niño Southern Oscillation) may drive a regime shift in the Galapagos rocky subtidal at the whole community level. As the target community involves sponges as a key component, in addition to barnacles, Crustose Coralline Algae (CCA), corals, sea urchins, sea stars and predatory fish, the model tests predictions from the Sponge Reef Hypothesis (SRH), an emerging paradigm predicting that sponges may increasingly dominate space as corals decline from future climate change (representing a coral to sponge regime change). Preliminary data indicate that counter to the SRH, sponges declined during the unusually warm temperatures at the outset of the present ENSO in Galapagos subtidal communities. However, sea urchin predation on sponges and CCA appears to have accelerated at the same time, so manipulative field experiments are proposed to rigorously test and differentiate the effects of ENSO elevated temperature on sponge mortality from the effects of enhanced sea urchin predation on sponges. These experimental results will be evaluated in the context of actual, long-term (13-16 year) changes in the whole community obtained by quantitative re-sampling of the benthic community at 12 sites in the central Galapagos throughout the present ENSO. Re-sampling this baseline will also enable the analysis of indicators leading up to the hypothesized regime change. Broader educational impacts of the project will transpire at all levels from high school students to graduate students and the public.</p>
<p>Although regime changes have been described as abrupt shifts to alternate, persistent states in many ecosystems in response to natural or anthropogenic drivers, research on regime change in bottom-dwelling communities of tropical oceans has largely focused on a switch from coral-dominated to macroalgal- dominated regimes. This narrow focus overlooks potential influences of the diverse assemblages of sessile invertebrates such as sponges that share space on the hard substrate of reefs with corals and could proliferate as a new regime if corals are diminished. The SRH is an emerging community ecological paradigm that posits that sponges may increasingly dominate space as corals decline from future climate change and ocean acidification, yet it has not been rigorously tested. The exceptionally strong El Niño occurring in the Galapagos Islands presents a unique opportunity evaluate the potential for climate oscillations to create regime shifts at the community level and to test the SRH because subtidal benthic community structure has been quantified at least annually since 1999 at multiple sites in the central Galapagos Islands. Recent 2015 surveys indicated significant mortality of sponges at multiple sites coincident with the present El Niño warming, counter to the SRH. However, sea urchin predation on sponges and Crustose Coralline Algae (CCA) appears to have accelerated at the same time, so manipulative field experiments are proposed to rigorously test and differentiate the effects of ENSO elevated temperature on sponge mortality from the effects of enhanced sea urchin predation on sponges. More specifically, eight main hypotheses along with four alternate hypotheses are developed and proposed from a new conceptual model predicting direct and indirect pathways of regime change in a community of CCA, sponges, barnacles, corals, sea urchins, sea stars and predatory fish. The research will be performed in the rocky subtidal at the 12 community baseline sites in the central Galapagos archipelago during four trips in 2016-2017 bracketing the El Niño and La Niña phases. The proposed combination of experimental and observational (i.e. baseline re-sampling) methods will enable a rigorous evaluation of climate-induced direct and indirect pathways of regime change in tropical benthic ecosystems.</p>
SPONGERAPDGALPGS
largerWorkCitation
project
eng; USA
oceans
Galapagos Islands, Ecuador
-90.74908
-90.14065
-1.32879
-0.23696
2016-01-06
2017-07-25
Eastern Tropical Pacific, Galápagos Islands, Ecuador (00.41100 S, 90.27525 W)
0
BCO-DMO catalogue of parameters from Subtidal temperatures at 2 depth strata (6 and 12-15 m depth) from 12 sites in the central Galápagos Islands, Ecuador from February 2016 to February 2017 (SPONGERAPDGALPGS 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/721802.rdf
Name: site
Units: unitless
Description: <p>Site name</p>
http://lod.bco-dmo.org/id/dataset-parameter/721803.rdf
Name: lat
Units: decimal degrees
Description: <p>Site latitude</p>
http://lod.bco-dmo.org/id/dataset-parameter/721804.rdf
Name: lon
Units: decimal degrees
Description: <p>Site longitude</p>
http://lod.bco-dmo.org/id/dataset-parameter/721805.rdf
Name: date
Units: unitless
Description: <p>Date (UTC-6) in format yyyy-mm-dd</p>
http://lod.bco-dmo.org/id/dataset-parameter/721806.rdf
Name: time
Units: unitless
Description: <p>Time (UTC-6) in format HH:MM:SS</p>
http://lod.bco-dmo.org/id/dataset-parameter/721807.rdf
Name: temp_6m
Units: degrees Celsius
Description: <p>Temperature at depth of 6m</p>
http://lod.bco-dmo.org/id/dataset-parameter/721808.rdf
Name: temp_12_to_15m
Units: degrees Celsius
Description: <p>Temperature at depth of 12-15m</p>
http://lod.bco-dmo.org/id/dataset-parameter/721809.rdf
Name: ISO_DateTime_UTC
Units: unitless
Description: <p>ISO timestamp based on the ISO 8601:2004(E) standard in format YYYY-mm-ddTHH:MM:SSZ (UTC)</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
79329477
https://datadocs.bco-dmo.org/file/GwwAJR6CWnyYR1/temp_by_site.csv
temp_by_site.csv
Primary data file for dataset ID 721758
download
https://osprey.bco-dmo.org/dataset/721758/data/download
download
onLine
dataset
<p>Temperature&nbsp;was measured&nbsp;in degrees C, sampled every 10 minutes using Onset HOBO TidbiT V2 temperature loggers.&nbsp; Site names refer to locations and columns refer to the approximate depth of logger.</p>
Specified by the Principal Investigator(s)
<p>These data&nbsp;are raw temperature data obtained from loggers.</p>
<p>BCO-DMO Data Manager Processing Notes:<br />
* added a conventional header with dataset name, PI name, version date<br />
* modified parameter names to conform with BCO-DMO naming conventions<br />
* "NA" values replaced with no data value 'nd' for "no data"&nbsp;<br />
* site positions added from dataset: &nbsp;<a href="https://www.bco-dmo.org/dataset/628159">https://www.bco-dmo.org/dataset/628159</a><br />
* "time" column was split into date and time columns as it contained&nbsp;both<br />
* ISO formatted timestamp added from date and time values<br />
* data version 2018-03-29 replaces data version 2017-12-21.&nbsp; In version 2018-03-29, the time zone of the local (UTC-6) date stamps are clarified (date-&gt; date_local, time-&gt; time_local).&nbsp; Added 6 hours from ISO_DateTime_UTC values so they now reflect the UTC times correctly.</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
Onset HOBO TidbiT V2
Onset HOBO TidbiT V2
PI Supplied Instrument Name: Onset HOBO TidbiT V2 PI Supplied Instrument Description: Onset HOBO TidbiT V2 http://www.onsetcomp.com/products/data-loggers/utbi-001 Instrument Name: Temperature Logger Instrument Short Name: Instrument Description: Records temperature data over a period of time.
Deployment: RAPDGALPGS_sites
RAPDGALPGS_sites
Galapagos_Islands
island
RAPDGALPGS_sites
Jon D. Witman
Brown University
Galapagos_Islands
island