Environmental Impacts on Wetland Birds: Long-Term Monitoring Programmes in the Camargue, France

Ardea

Frank Cézilly²  Heinz Hafner³  Ruedi G. Nager⁴  Alan R. Johnson¹ 

[1] 1 Station biologique de la Tour du Valat, Le Sambuc, 13200 Arles, France;3 Université de Bourgogne, Equipe Ecologie Evolutive, UMR CNRS 5561 Biogéosciences, Dijon, France;1 Station biologique de la Tour du Valat, Le Sambuc, 13200 Arles, France † deceased;1 Station biologique de la Tour du Valat, Le Sambuc, 13200 Arles, France 2 College of Medical Veterinary and Life Sciences, Graham Kerr Building, University of Glasgow, Glasgow G12 8QQ, Scotland UK

关键词: Wintering Strategies;   

DOI  :  

学科分类：动物科学

来源: Nederlandse Ornithologische Unie/Netherlands Ornithological Union

【 摘 要 】

WetlandsintheMediterraneanareahavebecomeararehabitatduetohumanimpact.Tomodeltheecologyandbreedingbiologyofbirdsdependingonthathabitat,wedescribelong-termstudiesontwowetlandbirds(LittleEgretEgrettagarzettaandGreaterFlamingoPhoenicopterus(ruber)roseus)intheCamargue,France.ThehydrologicalconditionsinnaturalMediterraneanwetlandsdependlargelyonthepatternofrainfall(winter)andevapotranspiration(summer),buthavebeensubstantiallyalteredbyhumanactivities.Innaturalconditions,thesewetlandsareverydiverseandthereforesustainahighdiversityofbreedingbirds.Atthesametimetheirunpredictablenaturefavoursopportunisticbreedingandwinteringstrategiesoftheirinhabitants.Colonialwaterbirdsdependonwetlandsbothforsafenestingsitesandforforaging.Availabilityofsuitablenestingsitesmaylimitbreedingnumbers.Availabilityanddiversityofwetlandhabitatsasforagingsitesaffectthenumberanddensityofbreedingspeciesthatanareacansustain.Unfavourablefeedingconditionscanreducethenumberofbirdsthatattempttobreedandthenumberandqualityofoffspringthebirdsproduce.Apartfromlocalenvironmentalfactors,dispersalbetweenwetlandsinthewesternMediterraneanandexistenceofanon-breedingpoolalsoaffectbreedingnumbersintheCamargue.Thus,thepersistenceofwetlandbirdsintheMediterraneandependsbothonanetworkofhabitattypesonalocalscaleandanetworkofwetlandsonaregionalscale.

【 授权许可】

Unknown