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Table 3 Population alerts for declining waterbird species wintering at the Messolonghi lagoons during 1982 to 2012

From: Long-term population trends reveal increasing importance of a Mediterranean wetland complex (Messolonghi lagoons, Greece) for wintering waterbirds

Species name 1982 1993 2003
Black-necked grebe Moderate alert Strong alert Strong alert
Northern pintail No alert Strong alert Moderate alert
Common pochard Strong alert Strong alert Moderate alert
Tufted duck Strong alert Strong alert Strong alert
  1. Alerts were generated over the whole time series and the last 20 and 10 years. Moderate alerts correspond to >25% decline; strong alerts correspond to >50% decline.