http://lod.bco-dmo.org/id/dataset/950508
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
2025-02-04
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
[DRAFT] The biomass of turf samples in damselfish territory before and after treatment with fertilizer in Mo'orea, French Polynesia from June to July 2025
2025-02-04
publication
2025-02-04
revision
BCO-DMO Linked Data URI
2025-02-04
creation
http://lod.bco-dmo.org/id/dataset/950508
Mark E. Hay
Georgia Institute of Technology
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: Altman-Kurosaki, N. T., Hay, M. E. (2025) [DRAFT] The biomass of turf samples in damselfish territory before and after treatment with fertilizer in Mo'orea, French Polynesia from June to July 2025. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2025-02-04 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/950508 [access date]
damselfish turf biomass Dataset Description: <p>This dataset is part of a larger study of the coral reef ecosystem in Mo’orea, French Polynesia that examines&nbsp;mechanisms governing interactions between damselfish, corals, and turf algae. The different analyses from the broader study are listed here, with links to these associated&nbsp;data&nbsp;in the 'Related Datasets' section below.&nbsp;&nbsp;</p>
<p><u>Analyses undertaken include</u>:</p>
<ul>
<li>Fertilizer impacts on damselfish behavior (<em>Damselfish behavior video&nbsp;dataset 949539)</em></li>
<li>Fertilizer impacts on biomass plus isotopic composition of algal turfs <strong><em>(this dataset of damselfish turf biomass)</em></strong></li>
<li>Fertilizer impacts on coral predation and herbivory&nbsp;(<em>Corallivory dataset 9xxxxxx,&nbsp;<em>Herbivory dataset 9xxxxx)</em></em></li>
<li>Impacts of fertilizer and caging on coral and algal growth&nbsp;(<em>Coral growth dataset 9xxxxx,&nbsp;<em>Algal overgrowth dataset 9xxxxxx)</em></em></li>
<li>Coral-turf allelopathy&nbsp;(<em>Turf extracts PAM dataset&nbsp;949219</em><em>,&nbsp;<em>Coral-algal contact dataset 9xxxxxx)</em></em></li>
<li>Species composition of turf gardens&nbsp;(<em>Turf cover composition dataset&nbsp;</em> <em>+ supplemental for Coral Reefs paper)</em></li>
</ul> Methods and Sampling: <p><em><strong>More needed here?</strong></em></p>
<p>Changes in traits of damselfish turfs were assessed by collecting six samples of turf that were about two centimeters square (~2 cm<sup>2</sup>) using a hammer and chisel from each damselfish territory both pre- and 14 days post-treatment. During each collection, three samples from each territory were used to assess biomass, and three were used to assess carbon to nitrogen ratio (C:N) of the turfs within each territory, resulting in 180 turf samples for each assessment of each treatment and timepoint. Exact dimensions of each turf sample were measured to the nearest millimeter. Turf filaments were removed from each sample via forceps in the lab and dried at 60°C until they reached a constant dry weight. Samples for biomass analysis were then ashed at 450°C in a muffle furnace until they reached a constant weight. Ash-free-dry mass was used to assess algal mass to avoid counting small bits of carbonate that were difficult to remove from all filaments. This was calculated as the difference between the mass of the sample before and after ashing and then standardized per unit area sampled (grams per square centimeter; g cm<sup>-2</sup>). Treatment effects on biomass were then assessed using gamma regression with a log link, with BACI fixed effects and random effects <em><strong>specified as above. ???</strong></em> Model assumptions were again assessed using the Dharma package (Hartig 2022).</p>
<p>To minimize cost associated with analyzing turf elemental composition, we combined triplicates from each territory by subsampling 1 mg of dried turf from each of the “Day 14” samples, reducing the number of samples to 30 (n=15 per treatment). These samples were acid fumed to remove carbonate and analyzed with a continuous-flow isotope-ratio mass spectrometry (CF-IRMS) using a Micromass Optima interfaced to a CE Elantech NA2500 elemental analyzer. Algal tissue Carbon:Nitrogen (C:N) ratios were then compared between treatments using a linear mixed effects model with a random effect to account for spatial blocking. Model assumptions were assessed using the DHARMa package (Hartig 2022).</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1947522 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1947522
onGoing
Mark E. Hay
Georgia Institute of Technology
404-894-8429
School of Biology 310 Ferst Drive
Atlanta
GA
30332
mark.hay@biology.gatech.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Date
Sample_num
Territory
Pair
Pre_post_trt
Fertilized
Replicate
Length
Width
Area
Dry_weight_lab
AFDW
Biomass
CF-IRMS interface
CE Elantech NA2500 elemental analyzer
Micromass Optima interfaced to an elemental analyzer
hammer and chisel
theme
None, User defined
date
sample identification
site description
sample time
treatment
replicate
length
width
area
dry_weight_biomass
weight
featureType
BCO-DMO Standard Parameters
Continuous Flow Interface for Mass Spectrometers
Elemental Analyzer
Isotope-ratio Mass Spectrometer
Manual Biota Sampler
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.
Positive Effects of Coral Biodiversity on Coral Performance: Patterns, Processes, and Dynamics
https://osprey.bco-dmo.org/project/837802
Positive Effects of Coral Biodiversity on Coral Performance: Patterns, Processes, and Dynamics
<p><em>NSF Award Abstract:</em><strong> </strong><br />
Coral reefs are extremely diverse, supply critical ecosystem services, and are collapsing at an alarming rate, with 80% coral loss in the Caribbean and >50% in the Pacific in recent decades. Previous studies emphasized negative interactions (competition, predation) as structuring reef systems, but positive interactions in such species-rich systems could be of equal importance in maintaining ecosystem function. If foundation species like corals depend on positive interactions, then their fitness may decline with the loss of surrounding species, creating a biodiversity meltdown where loss of one coral causes losses of others. This project conducts manipulative field experiments to understand the role of coral biodiversity in facilitating coral growth, survival, resilience, and retention of these foundation species and the critical ecosystem services they provide in shallow tropical seas. This project is committed to: 1) Educating and exciting influential business and civic leaders about conservation and restoration of coastal marine systems before these systems lose ecological function and value. This will involve influential Rotary clubs within North Georgia/Atlanta (the major economic engine of the southeastern US) as an initial focus. 2) Using the Research News and Institute Communications Office at Georgia Tech and well-developed contacts with science writers to produce popular press pieces on important ocean ecology discoveries emerging from these studies. (3) Organizing a public workshop of internationally prominent scientists focused on Maintaining Marine Biodiversity as a Strategy to Sustain Ecosystem Services and Coastal Cultures and Economies. A previous effort like this, organized by the investigators, attracted about 200 attendees and was webcast to numerous high schools in Georgia and to foreign investigators in less developed countries that could not attend. Speakers also conducted in-person video interviews with local high school classes. Due to that success, this model will be repeated. 4) Working with an association of educators and cultural leaders in French Polynesia to produce electronic format presentations on our work and on reef conservation that are appropriate for use by both teachers and leaders within Polynesian culture.</p>
<p>Ecologists have excelled at demonstrating the importance of direct (often negative) interactions among species pairs. However, when these interactions occur in a complex context among thousands of other species in the field, the sum of the many, poorly-known, indirect interactions can counterbalance, or even reverse, the better-known direct interactions, generating diffuse mutualisms instead of agonistic outcomes. In a proof-of-concept initial experiment, coral growth and survivorship were greater in coral polycultures than monocultures, especially during early stages of community development. Processes generating this outcome are unclear but understanding these is of critical importance as diversity and function of reefs decline and as humans need to predict and adapt to changing environments. This interdisciplinary investigation merges expertise in experimental field ecology, chemical ecology, and the ecology of microbiomes to investigate the functional role of biodiversity in coral reef ecosystems. Experiments use a novel coral transplantation method and field manipulations to assess: 1) whether greater coral species diversity enhances coral community performance, as well as growth and survivorship of individual corals, 2) whether greater genotypic diversity enhances coral performance within a species, 3) whether greater diversity of seaweed competitors further suppresses corals and enhances seaweed performance, and 4) the processes driving the patterns documented above, including the roles of disease, intraspecific versus interspecific competition, predators, mutualists, and differential access to, or use of, resources. The research investigates the relationship between biodiversity and ecosystem function across dimensions of coral taxonomic diversity, from species to genotypes, and creates a series of experiments elucidating general principles underlying ecosystem dynamics. Filling these knowledge gaps advances our fundamental understanding of how biodiversity influences ecosystem function at multiple scales and provides insight into the processes promoting coral coexistence in these species-rich ecosystems. Findings will have practical implications for coral management and restoration and may improve predictions regarding coral reef resilience and recovery in the face of changing climate.</p>
Coral Biodiversity
largerWorkCitation
project
eng; USA
biota
oceans
-149.83925
-149.83925
-17.478306
-17.478306
2025-06-13
2025-07-14
Moorea, French Polynesia, South Pacific Ocean (17º32’S 149º50’W)
0
BCO-DMO catalogue of parameters from [DRAFT] The biomass of turf samples in damselfish territory before and after treatment with fertilizer in Mo'orea, French Polynesia from June to July 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/950580.rdf
Name: Date
Units: unitless
Description: <p>Date of sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/950581.rdf
Name: Sample_num
Units: unitless
Description: <p>Sample number of the turf sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/950582.rdf
Name: Territory
Units: unitless
Description: <p>Territory number</p>
http://lod.bco-dmo.org/id/dataset-parameter/950583.rdf
Name: Pair
Units: unitless
Description: <p>Spatial pair for a given set of damselfish territories (A through O); used for spatial blocking</p>
http://lod.bco-dmo.org/id/dataset-parameter/950584.rdf
Name: Pre_post_trt
Units: unitless
Description: <p>Indicates whether biomass sample was collected before (pre-) or after (post-) treatment with fertilizer</p>
http://lod.bco-dmo.org/id/dataset-parameter/950585.rdf
Name: Fertilized
Units: unitless
Description: <p>Indicates if territory had fertilizer applied to it (Y) or was a control (N)</p>
http://lod.bco-dmo.org/id/dataset-parameter/950586.rdf
Name: Replicate
Units: unitless
Description: <p>Indicates measurements for a given turf triplicate used in biomass measurements</p>
http://lod.bco-dmo.org/id/dataset-parameter/950587.rdf
Name: Length
Units: centimeters (cm)
Description: <p>Length of turf sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/950588.rdf
Name: Width
Units: centimeters (cm)
Description: <p>Width of turf sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/950589.rdf
Name: Area
Units: square centimeters (cm^2)
Description: <p>Calculated area of turf sample (from length x width)</p>
http://lod.bco-dmo.org/id/dataset-parameter/950590.rdf
Name: Dry_weight_lab
Units: grams (g)
Description: <p>Dry weight of turf sample measured in the lab in Atlanta</p>
http://lod.bco-dmo.org/id/dataset-parameter/950591.rdf
Name: AFDW
Units: grams (g)
Description: <p>Ash free dry weight; the weight of the sample after being ashed in the muffle furnace</p>
http://lod.bco-dmo.org/id/dataset-parameter/950592.rdf
Name: Biomass
Units: grams (g)
Description: <p>Dry weight minus ash free dry weight</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
https://osprey.bco-dmo.org/dataset/950508/data/download
download
onLine
dataset
<p><em><strong>More needed here?</strong></em></p>
<p>Changes in traits of damselfish turfs were assessed by collecting six samples of turf that were about two centimeters square (~2 cm<sup>2</sup>) using a hammer and chisel from each damselfish territory both pre- and 14 days post-treatment. During each collection, three samples from each territory were used to assess biomass, and three were used to assess carbon to nitrogen ratio (C:N) of the turfs within each territory, resulting in 180 turf samples for each assessment of each treatment and timepoint. Exact dimensions of each turf sample were measured to the nearest millimeter. Turf filaments were removed from each sample via forceps in the lab and dried at 60°C until they reached a constant dry weight. Samples for biomass analysis were then ashed at 450°C in a muffle furnace until they reached a constant weight. Ash-free-dry mass was used to assess algal mass to avoid counting small bits of carbonate that were difficult to remove from all filaments. This was calculated as the difference between the mass of the sample before and after ashing and then standardized per unit area sampled (grams per square centimeter; g cm<sup>-2</sup>). Treatment effects on biomass were then assessed using gamma regression with a log link, with BACI fixed effects and random effects <em><strong>specified as above. ???</strong></em> Model assumptions were again assessed using the Dharma package (Hartig 2022).</p>
<p>To minimize cost associated with analyzing turf elemental composition, we combined triplicates from each territory by subsampling 1 mg of dried turf from each of the “Day 14” samples, reducing the number of samples to 30 (n=15 per treatment). These samples were acid fumed to remove carbonate and analyzed with a continuous-flow isotope-ratio mass spectrometry (CF-IRMS) using a Micromass Optima interfaced to a CE Elantech NA2500 elemental analyzer. Algal tissue Carbon:Nitrogen (C:N) ratios were then compared between treatments using a linear mixed effects model with a random effect to account for spatial blocking. Model assumptions were assessed using the DHARMa package (Hartig 2022).</p>
Specified by the Principal Investigator(s)
<p>Treatment effects on biomass were then assessed using gamma regression with a log link, with BACI fixed effects and random effects&nbsp;<em><strong>specified as above. ???</strong></em>&nbsp;Model assumptions were again assessed using the DHARMa package (Hartig, 2022).</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
CF-IRMS interface
CF-IRMS interface
PI Supplied Instrument Name: CF-IRMS interface PI Supplied Instrument Description:Algal turf samples were analyzed with a continuous-flow isotope-ratio mass spectrometry interfaced to an elemental analyzer. Instrument Name: Continuous Flow Interface for Mass Spectrometers Instrument Short Name: Instrument Description: A Continuous Flow Interface connects solid and liquid sample preparation devices to instruments that measure isotopic composition. It allows the introduction of the sample and also reference and carrier gases.
Examples: Finnigan MATConFlo II, ThermoScientific ConFlo IV, and Picarro Caddy.
Note: This is NOT an analyzer
CE Elantech NA2500 elemental analyzer
CE Elantech NA2500 elemental analyzer
PI Supplied Instrument Name: CE Elantech NA2500 elemental analyzer PI Supplied Instrument Description:Algal turf samples were analyzed with a continuous-flow isotope-ratio mass spectrometry interfaced to a CE Elantech NA2500 elemental analyzer. Instrument Name: Elemental Analyzer Instrument Short Name: Instrument Description: Instruments that quantify carbon, nitrogen and sometimes other elements by combusting the sample at very high temperature and assaying the resulting gaseous oxides. Usually used for samples including organic material. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB01/
Micromass Optima interfaced to an elemental analyzer
Micromass Optima interfaced to an elemental analyzer
PI Supplied Instrument Name: Micromass Optima interfaced to an elemental analyzer PI Supplied Instrument Description:Algal turf samples were analyzed with a continuous-flow isotope-ratio mass spectrometry (CF-IRMS) using a Micromass Optima interfaced to an elemental analyzer. Instrument Name: Isotope-ratio Mass Spectrometer Instrument Short Name:IR Mass Spec; IRMS Instrument Description: The Isotope-ratio Mass Spectrometer is a particular type of mass spectrometer used to measure the relative abundance of isotopes in a given sample (e.g. VG Prism II Isotope Ratio Mass-Spectrometer). Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB16/
hammer and chisel
hammer and chisel
PI Supplied Instrument Name: hammer and chisel PI Supplied Instrument Description:Algal turfs were collected using a hammer and chisel to obtain six samples that were two centimeters square. Instrument Name: Manual Biota Sampler Instrument Short Name:Manual Biota Sampler Instrument Description: "Manual Biota Sampler" indicates that a sample was collected in situ by a person, possibly using a hand-held collection device such as a jar, a net, or their hands. This term could also refer to a simple tool like a hammer, saw, or other hand-held tool. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/90/