Identifying important habitats for waterbird conservation at a Greek Regional Nature Park  

作　　者：Vasilios Liordos Vasileios J.Kontsiotis 

机构地区：[1]Hellenic Forest Service,12 Minoas str,19100 Megara,Attiki,Greece [2]Department of Forest and Natural Environment Sciences,International Hellenic University,P.O.Box 172,66100 Drama,Greece.

出　　处：《Avian Research》2020年第4期452-464,共13页鸟类学研究（英文版）

摘　　要：Background:Small coastal wetlands are vital sites for wintering waterbirds.Identifying important habitats is critical for managing waterbirds effectively.The Vourkari inlet is a small coastal wetland located near the capital Athens,within the most urbanized and industrialized area of Greece.We aimed at identifying the most important habitats for waterbirds at the Vourkari inlet during winter.Methods:Data about habitat use and availability were collected for 14 waterbird species and for seven habitat classes.Habitat selection(Manly’s selection ratio),overlap indices(Pianka’s niche overlap index)and null models were calculated.Results:All the studied waterbird species selected available habitats nonrandomly.Shallow waters(0–2 m),were used by 13 waterbirds and selected by five waterbirds.Pools and channels were used and selected by 10 species.Mud was used by nine species and selected by six species.Mud with rocky substrate was used by nine species and selected by eight species.Medium(2–4 m)and deep(4–6 m)open water habitats were used by seven species and selected by four species.Halophytic vegetation was used by six species and selected by two species.Several habitats were selected by nationally important populations:mudflat habitats(i.e.,mud,mud with rocky substrate and pools and channels)by Common Redshanks(Tringa totanus),halophytic vegetation by Little Egrets(Egretta garzetta),shallow waters by Common Shelducks(Tadorna tadorna)and medium and deep waters by Sandwich Terns(Thalasseus sandvicencis),whilst shallow waters and mudflat habitats were preferred by a possibly internationally important population of Mediterranean Gulls(Ichthyaetus melanocephalus).Although overlap in habitat use between species was generally low,null models indicated habitat sharing and a lack of competition.Conclusions:Waterbirds coexisted in the absence of competition for habitats at Vourkari,where they mostly used and preferred shallow water and mudflats.Small coastal wetlands are numerous,both in Greece and worldwide,therefore

关 键 词：Habitat selection Habitat use MUDFLATS Niche overlap Null models Open water Small coastal wetlands 

分 类 号：Q958.8[生物学—动物学]