• Metadata catalogue
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Seabirds, density

Description:

Spatial and seasonal distributions of selected species of seabirds in the German Bight.

Data source:

TOPAS-Windobs Datenbank + TOPAS-FTZobs Datenbank.

These are data from Environmental Impact Assessments (EIS) and monitoring studies under the permit procedures of BSH in the North Sea EEZ and research data of the FTZ.

Data collection:

Ship-based and aircraft-based transect counts.

The basis of all ship-based seabird counts is the standardized method described by Tasker et al. (1984) and Garthe et al. (2002). Following this method, seabirds within a transect strip of known length and width were recorded. Thus the number of birds per area (density) can be calculated. Seabird counts from aircrafts are described in Diederichs et al. (2002). It is also a transect based method.

Time periods: Ship: June 2000 to Aug. 2013, aircraft: March 2002 to June 2013.

Data analysis:

Based on all survey years; for each species (or species group) and each species-specific season the mean density [individuals/km²] per raster cell is calculated as "the sum of the counted seabirds divided by the sum of the survey effort inside the raster cell". Species specific correction factors were used for the calculation of the density (Garthe et al. 2007, 2009; Markones and Garthe 2012). For divers separate correction factors were calculated for each single data collection team and then combined into a weighted average.

Product description:

Vector raster with "10 km x 10 km" raster cells (EPSG 3035).

WMS: classification by mean density (5 ranges), visualization by graduated symbols.

Bibliography see: ftp://ftp.bsh.de/outgoing/gdi-bsh/public/M/M5/docs/Seebirds_density_bibliography.htm

 
Citation proposal
Dr. Maria Böthling (BSH). Seabirds, density. https://services.mspdata.eu:/geonetwork/srv/api/records/8faf7f7e-e948-43ff-94ec-c942ba3491f8

Simple

Date ( Creation )
2007-09-19
Identifier
8faf7f7e-e948-43ff-94ec-c942ba3491f8

  Author

BSH - Dr. Maria Böthling (Sachbearbeiterin )  
Bernhard-Nocht-Str. 78 Hamburg 20359 Germany

  +4940 3190-3521  
  +4940 3190-5000 

  Point of contact

Forschungs- und Technologiezentrum Westküste (FTZ) - Henriette Schwemmer (Wissenschaftliche Angestellte )  
Hafentörn 1 Büsum 25761 Germany

  +494834 604 142  
  +494834 604 299 
Maintenance and update frequency
Continual
Keywords
  • seabirds , density , biology , distribution , North Sea , monitoring , counting , conservation

Resource constraints

No information provided.

Resource constraints

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Resource constraints

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Resource constraints

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Resource constraints

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Resource constraints

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Resource constraints

No information provided.
Classification
Unclassified
Access constraints
Copyright
Metadata language
German
Character set
UTF8
Topic category
  • Biota
  • Oceans
  • Environment
N
S
E
W


Reference system identifier
urn:ogc:def:crs:EPSG / 4326 / 6.11.2
Distribution format
  • ggf. nach Rücksprache (unbekannt )

  Author

BSH - Dr. Maria Böthling (Sachbearbeiterin )  
Bernhard-Nocht-Str. 78 Hamburg 20359 Germany

  +4940 3190-3521  
  +4940 3190-5000 
Hierarchy level
Dataset
Statement
Bundesamt für Seeschifffahrt und Hydrographie (BSH)

Metadata

File identifier
8faf7f7e-e948-43ff-94ec-c942ba3491f8   XML
Metadata language
English
Character set
UTF8
Hierarchy level
Dataset
Hierarchy level name
Biologie
Hierarchy level name
Beobachtungen
Date stamp
2018-11-19
Metadata standard name
ISO 19115
Metadata standard version
1.0

  Author

BSH - Dr. Maria Böthling (Sachbearbeiterin )  
Bernhard-Nocht-Str. 78 Hamburg 20359 Germany

  +4940 3190-3521  
  +4940 3190-5000 
 
 

  Overviews

Spatial and seasonal distributions of selected species of seabirds in the German Bight.

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