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Mediterranean seabird surveys 99/00/02

Dataset homepage

Citation

Hyrenbach, D., J. Arcos, M. Louzao, D. Oro and P. Abelló. 2006. Mediterranean seabird surveys 99/00/02. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/334) on yyyy-mm-dd. https://doi.org/10.15468/wdbtk3 accessed via GBIF.org on 2023-06-03.

Description

Original provider: Mediterranean Institute for Advanced Studies (IMEDEA) Dataset credits: Institut de Ciències del Mar, CMIMA (CSIC), Barcelona, Spain Abstract: Replicate springtime (May - June) vessel-based surveys in the western Mediterranean during standardized trawl surveys of the Spanish continental shelf and slope over three years (1999, 2000, 2002), provide broad-scale information on seabird distributions from the Strait of Gibraltar to Cape Creus.

All observations were made by the same observer (Jose Maria Arcos) during 1999, 2000, and 2002 using standardized strip-transect techniques (Tasker et al. 1984) with specific adaptations to the study area. A 300 m strip-width transect band was used, counting at both sides of the vessel (i.e., surveying a 600 m band) when the conditions (light and wind) were appropriate. Snap-shot counts for flying birds were used. All birds observed during the surveys were recorded and aggregated into 10-minute bins. Purpose: To study the distribution and oceanographic habitat of seabirds in the Western Mediterranean during the spring (May - June) of multiple years. Surveys were conducted onboard B/O Cornide de Saavedra research vessel, as part of the annual MEDITS trawl surveys, extending along the Mediterranean coast of the Iberian Peninsula, from the Strait of Gibraltar in the southwest to Cape Creus in the northeast.

Maite Louzao processed the at-sea data, as part of her Ph.D. dissertation, in the laboratory of Dr. Daniel Oro, at the Mediterranean Institute for Advanced Studies (IMEDEA), in Mallorca, Spain. Supplemental information: [2020-10-01] The following invalid species names were corrected according to the Integrated Taxonomic Information System (ITIS). Larus audouinii (176842) => Ichthyaetus audouinii (824066) Little Tern: Sterna albifrons (176899) => Sternula albifrons (824126) Mediterranean Gull: Larus melanocephalus (176858) => Ichthyaetus melanocephalus (824070) Sandwich Tern: Sterna sandvicensis (176927) => Thalasseus sandvicensis (176932) The original dataset includes 17 species names (columns) whose values represented animal counts for each 10-minute survey bin. In the OBIS-SEAMAP dataset, these columns are transposed to rows, each of which is a record for a single species. Due to recent changes in the taxonomy of Mediterranean seabirds, the species Puffinus yelkouan can include either Puffinus yelkouan or Puffinus mauretanicus because the latter has not been assigned an ITIS number. Even though both species are identified by the same code, they can be told apart using the field 'sp_obs.' Puffinus mauretanicus is coded as 'PM' and Puffinus yelkouan as 'PY.' The original dataset also includes ancillary data on the survey effort (length, survey strip width, area surveyed for each 10-minute bin, and vessel speed) and environmental conditions during surveys (Beaufort sea state, presence/absence of rain, and the proportion of cloud cover in the sky). Reference: Tasker, M.L., P.H. Jones, T. Dixon, and B.F. Blake. 1984. Counting seabirds at sea from ships: A review of methods employed and a suggestion for a standardized approach. Auk 101:567-577.

Purpose

To study the distribution and oceanographic habitat of seabirds in the Western Mediterranean during the spring (May - June) of multiple years. Surveys were conducted onboard B/O Cornide de Saavedra research vessel, as part of the annual MEDITS trawl surveys, extending along the Mediterranean coast of the Iberian Peninsula, from the Strait of Gibraltar in the southwest to Cape Creus in the northeast.

Maite Louzao processed the at-sea data, as part of her Ph.D. dissertation, in the laboratory of Dr. Daniel Oro, at the Mediterranean Institute for Advanced Studies (IMEDEA), in Mallorca, Spain.

Sampling Description

Study Extent

NA

Sampling

NA

Method steps

  1. NA

Additional info

marine, harvested by iOBIS

Taxonomic Coverages

Scientific names are based on the Integrated Taxonomic Information System (ITIS).
  1. Calonectris diomedea
    common name: Cory's Shearwater rank: species
  2. Chlidonias leucopterus
    common name: White-winged Tern rank: species
  3. Chlidonias niger
    common name: Black Tern rank: species
  4. Stercorarius skua
    common name: Great Skua rank: species
  5. Fratercula arctica
    common name: Atlantic Puffin rank: species
  6. Hydrobates pelagicus
    common name: European Storm Petrel rank: species
  7. Ichthyaetus audouinii
    common name: Audouin's Gull rank: species
  8. Larus cachinnans
    common name: Yellow-legged Gull rank: species
  9. Larus fuscus
    common name: Lesser Black-backed Gull rank: species
  10. Ichthyaetus melanocephalus
    common name: Mediterranean Gull rank: species
  11. Morus bassanus
    common name: Northern Gannet rank: species
  12. Phalacrocorax aristotelis
    rank: species
  13. Puffinus yelkouan
    common name: Yelkouan Shearwater rank: species
  14. Puffinus yelkouan
    common name: Yelkouan Shearwater rank: species
  15. Sternula albifrons
    common name: Little Tern rank: species
  16. Sterna hirundo
    common name: Common Tern rank: species
  17. Thalasseus sandvicensis
    common name: Sandwich Tern rank: species

Geographic Coverages

Alboran Sea,Strait of Gibraltar,Cape Creus,Balearic Islands

Bibliographic Citations

Contacts

Pere Abelló
originator
position: Primary contact
Pere Abelló
email: None
José Manuel Arcos
originator
position: Primary contact
José Manuel Arcos
email: None
David Hyrenbach
originator
position: Primary contact
Duke University Marine Laboratory
email: khyrenba@u.washington.edu
homepage: http://www.nicholas.duke.edu/people/faculty/hyrenbach.html
Maite Louzao
originator
position: Primary contact
IMEDEA (CSIC-UIB)
email: m.louzao@uib.es
Daniel Oro
originator
position: Primary contact
IMEDEA (CSIC-UIB)
email: d.oro@uib.es
OBIS-SEAMAP
metadata author
Marine Geospatial Ecology Lab, Duke University
A328 LSRC building
Durham
27708
NC
US
email: seamap-contact@duke.edu
homepage: http://seamap.env.duke.edu
OBIS-SEAMAP
distributor
Marine Geospatial Ecology Lab, Duke University
A328 LSRC building
Durham
27708
NC
US
email: seamap-contact@duke.edu
homepage: http://seamap.env.duke.edu
Pere Abelló
owner
position: Primary contact
Pere Abelló
email: None
José Manuel Arcos
owner
position: Primary contact
José Manuel Arcos
email: None
David Hyrenbach
owner
position: Primary contact
Duke University Marine Laboratory
email: khyrenba@u.washington.edu
homepage: http://www.nicholas.duke.edu/people/faculty/hyrenbach.html
Maite Louzao
owner
position: Primary contact
IMEDEA (CSIC-UIB)
email: m.louzao@uib.es
Daniel Oro
owner
position: Primary contact
IMEDEA (CSIC-UIB)
email: d.oro@uib.es
Pere Abelló
administrative point of contact
position: Primary contact
Pere Abelló
email: None
José Manuel Arcos
administrative point of contact
position: Primary contact
José Manuel Arcos
email: None
David Hyrenbach
administrative point of contact
position: Primary contact
Duke University Marine Laboratory
email: khyrenba@u.washington.edu
homepage: http://www.nicholas.duke.edu/people/faculty/hyrenbach.html
Maite Louzao
administrative point of contact
position: Primary contact
IMEDEA (CSIC-UIB)
email: m.louzao@uib.es
Daniel Oro
administrative point of contact
position: Primary contact
IMEDEA (CSIC-UIB)
email: d.oro@uib.es
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