Wanstead Ruské Dicle Ringing Station (spring 2004) Certak Hohenau-Ringelsdorf Portalban (Wald) Boda (1990) Boda (1994) Boda (1997) Rickebasta (1996) Rickebasta (1997) Egeside sjö The Ecological Register
global
North America
United States
South America/Africa
Europe
Eurasia
Africa/Australasia
•
•
•
•
•
•
•
•
•
•
•
•
Emberiza citrinella (bird): 12 samples
Standardised estimates are produced by subsampling and then extrapolating.
Raw richness may be higher when an abundance distribution is uneven.