Eybert Marie-Christine, Geslin Thomas, Questiau Sophie, Feunteun Eric
UMR Ecobio 6553, Avenue du Général Leclerc, 35042 Rennes, France.
C R Biol. 2003 Aug;326 Suppl 1:S140-7. doi: 10.1016/s1631-0691(03)00051-9.
The Mont-Saint-Michel bay located on the East Atlantic Flyway is the first site in France for wintering shorebirds, with, on average, 53,000 individuals in January. Seven species represent 96% of that community: dunlin (Calidris alpina), knot (Calidris canutus), oystercatcher (Haematopus ostralegus), curlew (Numenius arquata), grey plover (Pluvialis squatarola), bar-tailed godwit (Limosa lapponica) and black-tailed godwit (Limosa limosa). The international bird census organised by Wetlands International in mid-January gave us the opportunity to study, for a 23 years period, population variations in the bay. Despite a quite good carrying capacity, we showed that the decreasing proportion of 4 species in the bay relative to the other French populations may indicate a general perturbation of the bay. We discuss the different hypotheses to explain that observation.
位于东大西洋飞行路线上的圣米歇尔山湾是法国越冬滨鸟的首个栖息地，1月份平均有53000只个体。七个物种占该群落的96%：黑腹滨鹬（Calidris alpina）、红腹滨鹬（Calidris canutus）、蛎鹬（Haematopus ostralegus）、白腰杓鹬（Numenius arquata）、灰斑鸻（Pluvialis squatarola）、斑尾塍鹬（Limosa lapponica）和黑尾塍鹬（Limosa limosa）。1月中旬由湿地国际组织的国际鸟类普查让我们有机会在23年的时间里研究该湾的种群变化。尽管该湾有相当不错的承载能力，但我们发现，相对于法国其他地区的种群，该湾4个物种的比例下降可能表明该湾受到了普遍干扰。我们讨论了解释这一观察结果的不同假设。
