Mediterranean seabird surveys 99/00/02

Pere Abelló; José Manuel Arcos; David Hyrenbach; Maite Louzao; Daniel Oro

doi:10.15468/wdbtk3

Mediterranean seabird surveys 99/00/02

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

NA

Additional info

marine, harvested by iOBIS

Taxonomic Coverages

Scientific names are based on the Integrated Taxonomic Information System (ITIS).

Calonectris diomedea
common name: Cory's Shearwater rank: species
Chlidonias leucopterus
common name: White-winged Tern rank: species
Chlidonias niger
common name: Black Tern rank: species
Stercorarius skua
common name: Great Skua rank: species
Fratercula arctica
common name: Atlantic Puffin rank: species
Hydrobates pelagicus
common name: European Storm Petrel rank: species
Ichthyaetus audouinii
common name: Audouin's Gull rank: species
Larus cachinnans
common name: Yellow-legged Gull rank: species
Larus fuscus
common name: Lesser Black-backed Gull rank: species
Ichthyaetus melanocephalus
common name: Mediterranean Gull rank: species
Morus bassanus
common name: Northern Gannet rank: species
Phalacrocorax aristotelis
rank: species
Puffinus yelkouan
common name: Yelkouan Shearwater rank: species
Puffinus yelkouan
common name: Yelkouan Shearwater rank: species
Sternula albifrons
common name: Little Tern rank: species
Sterna hirundo
common name: Common Tern rank: species
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