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Evolution of populations of terns in the Delta Area (Zeeland) : Breeding Success
Citation
Contact:
Courtens, Wouter ;
Stienen, Eric Availability: Restricted
The data are withheld from general circulation and disclosure but access may be obtained on a case-by-case basis through negotiation Description
In Zeeland (Delta area) a number of (breeding) biological parameters were determined from Tern and Common Tern. The dataset is the result of determining breeding success of 25 to 50 marked nests of Tern and Common Tern in a number of colonies in the Delta area (Zeeland). Scope Keywords: Marine/Coastal, Brackish water, Terrestrial, Birds, Breeding success, Clutch size, Marine birds, ANE, Netherlands, Delta Area, Netherlands, Zeeland, Sterna hirundo Linnaeus, 1758, Sterna sandvicensis Latham, 1787 Geographical coverage ANE, Netherlands, Delta Area [Marine Regions] Netherlands, Zeeland [Marine Regions] Temporal coverage
1 May 2009 - 1 August 2011 Yearly Parameters
Breeding success Methodology
Clutch size Methodology Egg size Methodology Fledging success Hatching success Breeding success: Count of eggs per nests Number of eggs per nest are counted in 30 to 40 individual enclosed nests in a representative area of the colony. Counted nests are marked and counted eggs are marked. Clutch size: Count of % of hatched eggs that actually fledged Cause of loss is noted: predation, found death (starvation or dehydratation). Rule for success of fledging is that winglength exceeds 160 mm for Common tern and 180 mm for Sandwich tern and Black headed gull. Egg size: Count of percentage of hatched eggs Cause of loss are noted: predation, trampling, flooding. Hachlings are ringed individually within 3 days from hatching. Contributors
Vlaamse overheid; Beleidsdomein Leefmilieu, Natuur en Energie; Instituut voor Natuur- en Bosonderzoek; Afdeling Biodiversiteit en Natuurlijk Milieu; Onderzoeksgroep Ecosysteemdiversiteit, more, data creator
Vlaamse overheid; Beleidsdomein Omgeving; Instituut voor Natuur- en Bosonderzoek (INBO), more, data owner
Dataset status: In Progress
Data type: Data
Data origin: Monitoring: field survey
Metadatarecord created: 2012-01-27
Information last updated: 2012-11-14
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