http://lod.bco-dmo.org/id/dataset/969049
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
2025-07-17
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Respiration and Gross Photosynthesis Rates of Galápagos Macroalgae from 2022 to 2025
2025-07-30
publication
2025-07-30
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2025-09-03
publication
https://doi.org/10.26008/1912/bco-dmo.969049.1
Margarita Brandt
Universidad San Francisco de Quito USFQ
principalInvestigator
John Bruno
University of North Carolina at Chapel Hill
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: Bruno, J., Brandt, M., Silva, I., Agudo-Adriani, E. (2025) Respiration and Gross Photosynthesis Rates of Galápagos Macroalgae from 2022 to 2025. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2025-07-30 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.969049.1 [access date]
Respiration and Gross Photosynthesis Rates of Galápagos Macroalgae from 2022 to 2025 Dataset Description: Methods and Sampling: <p>We quantified the metabolic responses of subtidal seaweed beds to varying thermal conditions during field trials conducted in June 2022, March 2024, October 2024, and January 2025. Using the Community In Situ Metabolism instrument (CISME), we measured dark respiration and gross photosynthesis rates of macroalgal patches in the rocky subtidal zone at approximately six meters depth in Tijeretas Bay, San Cristóbal Island. Measurements were conducted via SCUBA across a rocky platform covered with macroalgal beds. To isolate individual seaweed patches, we used a hose clamp adjusted to the same diameter (56 mm) as the CISME head, selecting 5 to 7 patches and clearing the surrounding seaweed. We then positioned the bottom surface of the CISME head over each target patch and secured it to the substrate using three adjustable retractor hooks. This setup enabled the soft foam ring at the base of the head to seal and isolate the patch within a closed chamber, where 88 mL of seawater recirculated between the chamber and the head during incubation. We ran the R+P program and quantified oxygen saturation under dark (respiration) and light (photosynthesis) conditions for each patch, measuring each process for 4 to 6 minutes.</p>
<p>To normalize rates to macroalgal biomass, we calculated the dry mass (g) of each patch by scraping and vacuuming samples into individual collection mesh bags. These were transported to the Marine Ecology Laboratory at the Galapagos Science Center, where they were weighed, dried at 60 °C for 24 hours, and weighed again.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-2128592 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=2128592
onGoing
Margarita Brandt
Universidad San Francisco de Quito USFQ
mbrandt@usfq.edu.ec
pointOfContact
John Bruno
University of North Carolina at Chapel Hill
919-360-7651
CB#3280, Department of Biology UNC Chapel Hill
Chapel Hill
NC
27599-3280
USA
jbruno@unc.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
replicate
step
time
o2_percent_sat
o2_umol_kg
dry_weight
year_month
date
Memmert UFE 400 Sterilizer Laboratory Oven
CISME system
Weighed
SCUBA
theme
None, User defined
replicate
sample type
duration
O2 saturation
dissolved Oxygen
dry_wgt
date
featureType
BCO-DMO Standard Parameters
Drying Oven
Respirometer
scale or balance
Self-Contained Underwater Breathing Apparatus
instrument
BCO-DMO Standard Instruments
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.
Temperature Regulation of Top-Down Control in a Pacific Upwelling System
https://osprey.bco-dmo.org/project/892171
Temperature Regulation of Top-Down Control in a Pacific Upwelling System
<p><em>NSF Award Abstract:</em><br />
Nearly all the animals that inhabit the ocean are "cold-blooded" or ectothermic, meaning their body temperatures match the temperature of the ocean around them. This has important consequences for their physiology and more broadly for the way marine ecosystems function. When ectotherms warm up, their metabolism increases; meaning they breathe more rapidly, and eat more just to stay alive. This is bad news for prey since a warm predator is a hungry predator. But warming also enables prey species to crawl or swim away more quickly when being hunted. Thus, everything speeds up in warm water. Energy flows more quickly from the sun to seaweeds (via photosynthesis), to the herbivores, then on up to the large predators at the top of the food chain. The research team is testing these ideas in the Galápagos Islands to determine how temperature influences marine ecosystems. Ongoing work in this iconic natural laboratory is helping marine ecologists understand the role of temperature and how this and other ecosystems could function in the future as climate change warms the ocean. Other broader impacts of the project include student training and on-site outreach to tourists and the local community about ocean warming and some of the lesser-known species that inhabit the Galápagos.</p>
<p>The broad goal of this project is to understand the effect that temperature has on patterns and processes in upwelling systems. Specifically, the team is measuring the temperature-dependence of herbivory and carnivory in rocky subtidal habitats of the Galápagos. They are performing field experiments to measure the relative and interactive effects of temperature, herbivory, and nutrient flux on the productivity and standing biomass of benthic macroalgae. Additionally, they are using in situ predation assays across spatial and temporal temperature gradients and mesocosm experiments to determine the relationship between ocean temperature and predation intensity for predator-prey pairings including whelk–barnacle, sea star–urchin, and fish–squid.</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>
Galapagos 2021
largerWorkCitation
project
eng; USA
biota
oceans
-89.6069
-89.6069
-0.8878
-0.8878
2022-06-17
2025-01-17
Galapagos Islands
0
BCO-DMO catalogue of parameters from Respiration and Gross Photosynthesis Rates of Galápagos Macroalgae from 2022 to 2025
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/970233.rdf
Name: replicate
Units: unitless
Description: <p>Indicates the replicate number (i.e., algal patch number)</p>
http://lod.bco-dmo.org/id/dataset-parameter/970234.rdf
Name: step
Units: unitless
Description: <p>Indicates which process the CISME is measuring: 1 = respiration step; 2 = photosynthesis step</p>
http://lod.bco-dmo.org/id/dataset-parameter/970235.rdf
Name: time
Units: minutes
Description: <p>Indicates the duration (in minutes) for which each process was measured</p>
http://lod.bco-dmo.org/id/dataset-parameter/970236.rdf
Name: o2_percent_sat
Units: percent (%)
Description: <p>Oxygen saturation (%) inside the CISME chamber</p>
http://lod.bco-dmo.org/id/dataset-parameter/970237.rdf
Name: o2_umol_kg
Units: µmol/kg
Description: <p>Oxygen concentration (µmol/kg) inside the CISME chamber</p>
http://lod.bco-dmo.org/id/dataset-parameter/970238.rdf
Name: dry_weight
Units: grams (g)
Description: <p>Weight in grams of each patch</p>
http://lod.bco-dmo.org/id/dataset-parameter/970239.rdf
Name: year_month
Units: unitless
Description: <p>Year and month data were collected</p>
http://lod.bco-dmo.org/id/dataset-parameter/970240.rdf
Name: date
Units: unitless
Description: <p>Date data were collected, if available</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
666981
https://darchive.mblwhoilibrary.org/server/api/core/bitstreams/9f6776b9-011c-4993-874f-78efdf6af23a/content
download
https://doi.org/10.26008/1912/bco-dmo.969049.1
download
onLine
dataset
<p>We quantified the metabolic responses of subtidal seaweed beds to varying thermal conditions during field trials conducted in June 2022, March 2024, October 2024, and January 2025. Using the Community In Situ Metabolism instrument (CISME), we measured dark respiration and gross photosynthesis rates of macroalgal patches in the rocky subtidal zone at approximately six meters depth in Tijeretas Bay, San Cristóbal Island. Measurements were conducted via SCUBA across a rocky platform covered with macroalgal beds. To isolate individual seaweed patches, we used a hose clamp adjusted to the same diameter (56 mm) as the CISME head, selecting 5 to 7 patches and clearing the surrounding seaweed. We then positioned the bottom surface of the CISME head over each target patch and secured it to the substrate using three adjustable retractor hooks. This setup enabled the soft foam ring at the base of the head to seal and isolate the patch within a closed chamber, where 88 mL of seawater recirculated between the chamber and the head during incubation. We ran the R+P program and quantified oxygen saturation under dark (respiration) and light (photosynthesis) conditions for each patch, measuring each process for 4 to 6 minutes.</p>
<p>To normalize rates to macroalgal biomass, we calculated the dry mass (g) of each patch by scraping and vacuuming samples into individual collection mesh bags. These were transported to the Marine Ecology Laboratory at the Galapagos Science Center, where they were weighed, dried at 60 °C for 24 hours, and weighed again.</p>
Specified by the Principal Investigator(s)
<p>The data were downloaded directly from the CISME's onboard computer. For each replicate, we obtained oxygen saturation and concentration values. We interpreted a decrease in oxygen saturation as respiration and an increase as photosynthesis. Each replicate has a matching biomass value of fleshy/filamentous seaweed.&nbsp;</p>
Specified by the Principal Investigator(s)
- Imported "Metabolism_CISME_data.csv" and "Dry weight_CISME_data.csv" into the BCO-DMO data system
- Added the dried weight of samples to the metabolic data by joining on year, month, and replicate and added the "dry_weight"
- Added parameter to indicate both month and year
- Added full date where applicable in "date" field
- Renamed parameters, replacing spaces with underscores
- Exported file as "969049_v1_cisme_galapagos.csv"
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
Memmert UFE 400 Sterilizer Laboratory Oven
Memmert UFE 400 Sterilizer Laboratory Oven
PI Supplied Instrument Name: Memmert UFE 400 Sterilizer Laboratory Oven PI Supplied Instrument Description:These were transported to the Marine Ecology Laboratory at the Galapagos Science Center, where they were weighed, dried at 60 °C for 24 hours, and weighed again. Instrument Name: Drying Oven Instrument Short Name: Instrument Description: a heated chamber for drying
CISME system
CISME system
PI Supplied Instrument Name: CISME system PI Supplied Instrument Description:We measured benthic algal dark respiration and gross photosynthesis rates in situ using a CISME system (a diver-portable respirometer) in Tijeretas, San Cristobal, Galapagos. Instrument Name: Respirometer Instrument Short Name: Instrument Description: A device that measures the rate of respiration by a living organism or organic system by measuring its rate of exchange of oxygen and/or carbon dioxide.
Weighed
Weighed
PI Supplied Instrument Name: Weighed PI Supplied Instrument Description:These were transported to the Marine Ecology Laboratory at the Galapagos Science Center, where they were weighed, dried at 60 °C for 24 hours, and weighed again. 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/
SCUBA
SCUBA
PI Supplied Instrument Name: SCUBA PI Supplied Instrument Description:Measurements were conducted via SCUBA across a rocky platform covered with macroalgal beds. Instrument Name: Self-Contained Underwater Breathing Apparatus Instrument Short Name:SCUBA Instrument Description: The self-contained underwater breathing apparatus or scuba diving system is the result of technological developments and innovations that began almost 300 years ago. Scuba diving is the most extensively used system for breathing underwater by recreational divers throughout the world and in various forms is also widely used to perform underwater work for military, scientific, and commercial purposes.
Reference: https://oceanexplorer.noaa.gov/technology/technical/technical.html