http://lod.bco-dmo.org/id/dataset/985768
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
2025-10-02
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Seasonally and spatially averaged stratification mixed layer temperature and chlorophyll-a around Northern Hemisphere seabird colonies from 1993 to 2019 (Stratification impacts on seabirds project)
2025-10-02
publication
2025-10-02
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2025-11-21
publication
https://doi.org/10.26008/1912/bco-dmo.985768.1
William Sydeman
Farallon Institute for Advanced Ecosystem Research
principalInvestigator
Sarah Ann Thompson
Farallon Institute for Advanced Ecosystem Research
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: Sydeman, W., Thompson, S. A. (2025) Seasonally and spatially averaged stratification mixed layer temperature and chlorophyll-a around Northern Hemisphere seabird colonies from 1993 to 2019 (Stratification impacts on seabirds project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2025-10-02 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.985768.1 [access date]
Seasonally and spatially averaged stratification, mixed layer temperature, and chlorophyll-a around Northern Hemisphere seabird colonies Dataset Description: <p>The primary data file of this dataset (985768_v1_ocean_conditions_at_seabird_colony_sites.csv) contains seasonally and spatially averaged stratification, mixed layer temperature, and chlorophyll-a around Northern Hemisphere seabird colonies.</p> Methods and Sampling: <p>The GLORYS12V1 global ocean reanalysis was used to characterize the marine environment of the study ecoregions and ecosystems. This high-resolution model (1/12° horizontal resolution, daily temporal resolution, 50 vertical depth levels) assimilates historical data from 1993 to 2019 and has been validated against independent observations. Environmental variables—including temperature, mixed layer depth, and salinity—were extracted for the upper 200 m to calculate coastal stratification using the Potential Energy Anomaly (PEA). The PEA, a robust metric for seasonal stratification, is particularly useful in shallow, coastal regions where permanent stratification may be disrupted by tidal and wind mixing. For full methodological details, see Killeen et al. (2025, in review).</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-2142918 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=2142918
completed
William Sydeman
Farallon Institute for Advanced Ecosystem Research
707-478-1381
101 H St. Suite Q
Petaluma
CA
94952-1092
USA
wsydeman@faralloninstitute.org
pointOfContact
Sarah Ann Thompson
Farallon Institute for Advanced Ecosystem Research
sathompson@faralloninstitute.org
pointOfContact
asNeeded
Dataset Version: 1
Unknown
idnum
year
spp
ScientificName_accepted
AphiaID
LSID
site
sppsite
site_lat
site_lon
PROVINCE
ECOREGION
bs
pr_failure
nyear
pre_breeding_temp
breeding_temp
pre_breeding_chl
breeding_chl
pre_breeding_strat
breeding_strat
stbs
stpb_temp
stb_temp
stpb_strat
stb_strat
stpb_chl
stb_chl
d_stbs
d_stpb_temp
d_stpb_chl
d_stpb_strat
d_stb_temp
d_stb_chl
d_stb_strat
theme
None, User defined
No BCO-DMO term
year
common_name
taxon
taxon_code
site
experiment id
latitude
longitude
region
reproduction rate
duration
water temperature at measurement depth
chlorophyll a
featureType
BCO-DMO Standard Parameters
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.
Global analysis of stratification impacts on seabirds through food resources
https://osprey.bco-dmo.org/project/867879
Global analysis of stratification impacts on seabirds through food resources
<p><em>NSF Award Abstract:</em><br />
Global warming is affecting the world’s oceans by altering marine habitats, yet the effects on marine life vary by ocean region. One factor that may explain these observations is that ocean surface waters have warmed faster than deeper waters. Temperature differences may act as a physical barrier to mixing, thereby impeding deeper nutrients from reaching the sunlit surface where they are used by ocean plants in photosynthesis. With less mixing, the upper layers of the ocean may have become less productive, which may in turn impact marine fish, bird, and mammal populations of economic and cultural (ecological) value to society. To conduct this study, the investigators are examining the effects of ocean warming by depth on the abundance of plankton, small fish, and the breeding success of marine birds across the world using existing long-term data. They are developing mathematical relationships to understand how ocean warming at various depths is linked to plankton, fish, and bird productivity. Results will provide key information for selecting which seabird species may be best suited as ecological indicators of change for different ecosystems across the globe, and therefore has implications for remote-ocean monitoring. The project will contribute new scientific understanding for upcoming United Nation assessment reports and enhance public awareness of ocean health through outreach materials centered on popular seabirds such as puffins and penguins. It will support early career and postdoctoral scientists.</p>
<p>Ocean thermal stratification is an important factor determining primary productivity in epipelagic zones of the world’s oceans. A recent global analysis showed declining trends in the breeding productivity of fish-eating seabirds that forage in the epipelagic zone, but increasing stratification has yet to be investigated as an explanatory factor. The primary objective of this project is to test the hypothesis that seabird species groups vary in their responses to increasing thermal stratification through the indirect effects of stratification on epipelagic food resource availability and/or prey use by the birds. The investigators are testing the prediction that thermal stratification has the largest effect on breeding productivity of piscivorous, surface-foraging species. They are integrating a new global database on seabird productivity with high-resolution data on thermal stratification available from the European GLORYS model, as well as satellite-based chlorophyll-a data from NASA. They are using Generalized Linear Mixed Models to test for variation between seabird groups and Structural Equation Models to test direct and indirect pathways of response from stratification through prey availability to seabird productivity, focusing on mid-to-high latitude ecosystems across ocean basins in both the northern and southern hemispheres. Results will improve understanding of how seabirds respond to increasing thermal stratification in relation to fundamental differences in seabird life history traits. The retrospective analysis will advance knowledge of how seabirds that feed on different prey, and in different epipelagic habitats of the world’s oceans, have responded to recent increases in stratification. More generally, the study will contribute insight into how physical changes in the upper ocean affect predators through the availability of food resources.</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>
<p>Location Description:<br />
Data to be analyzed are from around the world and contributed from numerous local providers and other groups. The study area is the global ocean. Analysis will be done at the Farallon Institute, located in Petaluma, California.</p>
Stratification impacts on seabirds
largerWorkCitation
project
eng; USA
oceans
-177.378195
175.924722
21.574688
74.2
1993-01-01
2019-12-31
global
0
BCO-DMO catalogue of parameters from Seasonally and spatially averaged stratification mixed layer temperature and chlorophyll-a around Northern Hemisphere seabird colonies from 1993 to 2019 (Stratification impacts on seabirds 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/986044.rdf
Name: idnum
Units: exp_id
Description: <p>Row number index.</p>
http://lod.bco-dmo.org/id/dataset-parameter/986045.rdf
Name: year
Units: years
Description: <p>Year corresponding with breeding observation.</p>
http://lod.bco-dmo.org/id/dataset-parameter/986046.rdf
Name: spp
Units: unitless
Description: <p>Seabird species common name.</p>
http://lod.bco-dmo.org/id/dataset-parameter/986047.rdf
Name: ScientificName_accepted
Units: unitless
Description: <p>Scientific name that corrisponds with the represented species common name (spp).</p>
http://lod.bco-dmo.org/id/dataset-parameter/986048.rdf
Name: AphiaID
Units: unitless
Description: <p>AphiaID associated with the represented scientific name of the observed seabird species, matched from the World Register of Marine Species (WoRMS) database.</p>
http://lod.bco-dmo.org/id/dataset-parameter/986049.rdf
Name: LSID
Units: unitless
Description: <p>LSID associated with the represented scientific name of the observed seabird species, matched from the World Register of Marine Species (WoRMS) database.</p>
http://lod.bco-dmo.org/id/dataset-parameter/986050.rdf
Name: site
Units: unitless
Description: <p>Seabird colony site name.</p>
http://lod.bco-dmo.org/id/dataset-parameter/986051.rdf
Name: sppsite
Units: unitless
Description: <p>Concatenated species and site variable.</p>
http://lod.bco-dmo.org/id/dataset-parameter/986052.rdf
Name: site_lat
Units: decimal degrees
Description: <p>Latitude value of the geographic coordinate representing the site in decimal degrees; a positive value indicates a northern coordinate.</p>
http://lod.bco-dmo.org/id/dataset-parameter/986053.rdf
Name: site_lon
Units: decimal degrees
Description: <p>Longitude value of the geographic coordinate representing the site in decimal degrees; a negative value indicates a western coordinate.</p>
http://lod.bco-dmo.org/id/dataset-parameter/986054.rdf
Name: PROVINCE
Units: unitless
Description: <p>Factor defining the province for each seabird site in the Marine Ecoregions of the World (MEOW) framework.</p>
http://lod.bco-dmo.org/id/dataset-parameter/986055.rdf
Name: ECOREGION
Units: unitless
Description: <p>Factor defining the province for each seabird site in the Marine Ecoregions of the World (MEOW) framework.</p>
http://lod.bco-dmo.org/id/dataset-parameter/986056.rdf
Name: bs
Units: unitless
Description: <p>Breeding success (number of fledglings per femail per year).</p>
http://lod.bco-dmo.org/id/dataset-parameter/986057.rdf
Name: pr_failure
Units: unitless
Description: <p>Binomial value describing the probability of breeding failure (breeding success = 0).</p>
http://lod.bco-dmo.org/id/dataset-parameter/986058.rdf
Name: nyear
Units: years
Description: <p>Number of years seabird data in the corresponding time series (sppsite).</p>
http://lod.bco-dmo.org/id/dataset-parameter/986059.rdf
Name: pre_breeding_temp
Units: degrees Celcius
Description: <p>Mixed layer temperature during the pre-breeding season.</p>
http://lod.bco-dmo.org/id/dataset-parameter/986060.rdf
Name: breeding_temp
Units: degrees Celcius
Description: <p>Mixed layer temperature during the breeding season.</p>
http://lod.bco-dmo.org/id/dataset-parameter/986061.rdf
Name: pre_breeding_chl
Units: mg/m^3
Description: <p>Mixed layer chlorophyll-a content during the pre-breeding season.</p>
http://lod.bco-dmo.org/id/dataset-parameter/986062.rdf
Name: breeding_chl
Units: mg/m^3
Description: <p>Mixed layer chlorophyll-a content during the breeding season.</p>
http://lod.bco-dmo.org/id/dataset-parameter/986063.rdf
Name: pre_breeding_strat
Units: J/m^3
Description: <p>Potential energy anomaly during the pre-breeding season.</p>
http://lod.bco-dmo.org/id/dataset-parameter/986064.rdf
Name: breeding_strat
Units: J/m^3
Description: <p>Potential energy anomaly during the breeding season.</p>
http://lod.bco-dmo.org/id/dataset-parameter/986065.rdf
Name: stbs
Units: unitless
Description: <p>Standardized seabird breeding success z-score.</p>
http://lod.bco-dmo.org/id/dataset-parameter/986066.rdf
Name: stpb_temp
Units: unitless
Description: <p>Standardized mixed layer temperature during the pre-breeding season z-score.</p>
http://lod.bco-dmo.org/id/dataset-parameter/986067.rdf
Name: stb_temp
Units: unitless
Description: <p>Standardized mixed layer temperature during the breeding season z-score.</p>
http://lod.bco-dmo.org/id/dataset-parameter/986068.rdf
Name: stpb_strat
Units: unitless
Description: <p>Standardized potential energy anomaly during the pre-breeding season z-score.</p>
http://lod.bco-dmo.org/id/dataset-parameter/986069.rdf
Name: stb_strat
Units: unitless
Description: <p>Standardized potential energy anomaly during the breeding season z-score.</p>
http://lod.bco-dmo.org/id/dataset-parameter/986070.rdf
Name: stpb_chl
Units: unitless
Description: <p>Standardized mixed layer chlorophyll-a content during the pre-breeding season z-score.</p>
http://lod.bco-dmo.org/id/dataset-parameter/986071.rdf
Name: stb_chl
Units: unitless
Description: <p>Standardized mixed layer chlorophyll-a content during the breeding season z-score.</p>
http://lod.bco-dmo.org/id/dataset-parameter/986072.rdf
Name: d_stbs
Units: unitless
Description: <p>Detrended, standardized seabird breeding success z-score.</p>
http://lod.bco-dmo.org/id/dataset-parameter/986073.rdf
Name: d_stpb_temp
Units: unitless
Description: <p>Detrended, standardized mixed layer temperature during the pre-breeding season z-score.</p>
http://lod.bco-dmo.org/id/dataset-parameter/986074.rdf
Name: d_stpb_chl
Units: unitless
Description: <p>Detrended, standardized mixed layer chlorophyll-a content during the pre-breeding season z-score.</p>
http://lod.bco-dmo.org/id/dataset-parameter/986075.rdf
Name: d_stpb_strat
Units: unitless
Description: <p>Detrended, standardized potential energy anomaly during the pre-breeding season z-score.</p>
http://lod.bco-dmo.org/id/dataset-parameter/986076.rdf
Name: d_stb_temp
Units: unitless
Description: <p>Detrended, standardized mixed layer temperature during the breeding season z-score.</p>
http://lod.bco-dmo.org/id/dataset-parameter/986077.rdf
Name: d_stb_chl
Units: unitless
Description: <p>Detrended, standardized mixed layer chlorophyll-a content during the breeding season z-score.</p>
http://lod.bco-dmo.org/id/dataset-parameter/986078.rdf
Name: d_stb_strat
Units: unitless
Description: <p>Detrended, potential energy anomaly during the breeding season z-score.</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
1295698
https://darchive.mblwhoilibrary.org/server/api/core/bitstreams/6bedc561-39bf-4e43-8aaf-2e53e6e1b9e5/content
download
https://doi.org/10.26008/1912/bco-dmo.985768.1
download
onLine
dataset
<p>The GLORYS12V1 global ocean reanalysis was used to characterize the marine environment of the study ecoregions and ecosystems. This high-resolution model (1/12° horizontal resolution, daily temporal resolution, 50 vertical depth levels) assimilates historical data from 1993 to 2019 and has been validated against independent observations. Environmental variables—including temperature, mixed layer depth, and salinity—were extracted for the upper 200 m to calculate coastal stratification using the Potential Energy Anomaly (PEA). The PEA, a robust metric for seasonal stratification, is particularly useful in shallow, coastal regions where permanent stratification may be disrupted by tidal and wind mixing. For full methodological details, see Killeen et al. (2025, in review).</p>
Specified by the Principal Investigator(s)
<p><strong>Spatial and temporal averaging to provide ecoregional monthly values:</strong> Data within each ecoregion were extracted by masking the dataset with ecoregion polygons defined by the Marine Ecoregions of the World (MEOW). All values within a polygon were averaged to produce monthly ecoregion means for the period 1993 to 2019.</p>
<p>Monthly values for each variable were then averaged over the periods corresponding to the pre-breeding (on-colony arrival to mean egg-laying date) and breeding (mean egg-laying date to mean fledging date) seasons of seabird colonies in the Northern Hemisphere subset of the Global Seabird Breeding Success Dataset. The resulting joined dataset includes yearly seabird breeding success and productivity estimates per seabird time series, along with corresponding mixed layer temperatures, stratification, and chlorophyll-a content during the pre-breeding and breeding periods. Seasonal, ecoregional averages were then standardized by subtracting the mean and dividing by the standard deviation for each ecoregion. To examine seabird breeding responses to interannual variability in environmental variables, quadratic detrending was applied to temperature, stratification, and chlorophyll-a.</p>
Specified by the Principal Investigator(s)
* Special characters have been removed from the parameters/column names in the primary data file (985768_v1_ocean_conditions_at_seabird_colony_sites.csv) and replaced with underscores ("_").
* Latitude and longitude values have been rounded to six decimal places.
* Originally, the primary data file only contained common name representations of observed species. Scientific names have been added to the data file, along with corresponding AphiaID and LSIDs from the World Register of Marine Species (WoRMS) database.
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