Trends of some wintering waterbirds in Lazio (1993-2006)

Since the 90s, censuses of wintering waterfowl have been carried out in the main wetlands of Lazio. We analysed the trends of 31 species in the 1993-2006 period (base year 1993) by means of TRIM (Trends and Indices Monitoring data) software (Model 3). Among the species regularly recorded in the regi...

Full description

Bibliographic Details
Published in:Rivista Italiana di Ornitologia
Main Authors: Massimo Brunelli, Ferdinando Corbi, Stefano Sarrocco, Alberto Sorace
Format: Article in Journal/Newspaper
Language:English
Italian
Published: PAGEPress Publications 2012
Subjects:
Wintering waterfowl census
Latium
trends
Zoology
QL1-991
Anas acuta
Anas clypeata
Calidris alpina
Gavia arctica
Numenius arquata
Pluvialis apricaria
Vanellus vanellus
Online Access:https://doi.org/10.4081/rio.2012.120
https://doaj.org/article/29861d0c09a5441daaff97fdbbe6ffde
Description
Summary:Since the 90s, censuses of wintering waterfowl have been carried out in the main wetlands of Lazio. We analysed the trends of 31 species in the 1993-2006 period (base year 1993) by means of TRIM (Trends and Indices Monitoring data) software (Model 3). Among the species regularly recorded in the region, Ardea alba, Ardea cinerea, Bubulcus ibis and Anser anser showed a strong increase; Podiceps cristatus, Nycticorax nycticorax, Egretta garzetta, Phoenicopterus ruber, Anas penelope, Anas strepera, Anas crecca, Anas platyrhynchos, Anas clypeata, Netta rufina, Aythya ferina, Aythya nyroca, Circus aeruginosus, Fulica atra, Pluvialis apricaria and Vanellus vanellus showed a moderate increase; Gavia arctica, Tachybaptus ruficollis, Podiceps nigricollis, Phalacrocorax carbo, Aythya fuligula and Numenius arquata resulted “stable”; Botaurus stellaris, Tadorna tadorna, Anas acuta, Pluvialis squatarola and Calidris alpina showed an uncertain trend. The trends for most species are similar to those recorded at a national level.

Similar Items