Trends of shorebirds in corner inlet, Victoria, 1982-2011

Minton, Clive, Dann, Peter, Ewing, Alice, Taylor, Susan, Jessop, Roz, Anton, Peter and Clemens, Robert (2012) Trends of shorebirds in corner inlet, Victoria, 1982-2011. The Stilt, 61 3-18.

Author Minton, Clive
Dann, Peter
Ewing, Alice
Taylor, Susan
Jessop, Roz
Anton, Peter
Clemens, Robert
Title Trends of shorebirds in corner inlet, Victoria, 1982-2011
Journal name The Stilt
ISSN 0726-1888
Publication date 2012
Year available 2012
Sub-type Article (original research)
Volume 61
Start page 3
End page 18
Total pages 16
Place of publication Princes Hill, VIC Australia
Publisher Australasian Wader Studies Group
Collection year 2013
Language eng
Subject 1103 Clinical Sciences
1105 Dentistry
Formatted abstract
Corner Inlet, Victoria, provides habitat for one of the largest and most diverse assemblages of shorebirds in southern Australia. Systematic counting commenced in 1981 and has continued,  uninterrupted, to the present (2011). Standardised counts, along fixed boat routes, indicate that numbers in summer of all species combined have declined by 23% over the 30 year count period, from typically 35-40,000 in the earlier years to 25-30,000 in recent times. Ten species – Grey Plover Pluvialis squatarola, Ruddy Turnstone Arenaria interpres, Eastern Curlew Numenius madagascariensis, Red Knot Calidris canutus, Great Knot Calidris tenuirostris,  Curlew Sandpiper Calidris ferruginea, Sharp-tailed Sandpiper Calidus acuminata, Common Greenshank Tringa nebularia, Greater Sand Plover Charadrius leschenaulti, and Lesser Sand
Plover C. mongolus - have declined, while Sooty Oystercatcher Haematopus fuliginosus, has increased. Numbers of five other migratory species –Bar-tailed Godwit Limosa lapponica,  Whimbrel Numenius phaepus, Red-necked Stint Calidris ruficollis, Sanderling C. alba and Double-banded Plover Charadrius bicinctus and one resident, species, Australian Pied
Oystercatcher Haematopus longirostris – have not shown any significant change. Estimated declines in the abundance of individual species ranged from 47% to 95%. In contrast there was a significant increase in Sooty Oystercatchers of between 1.5 fold (winter) and 3.5 fold (summer). Numbers counted varied widely between years, most likely due to a combination of
annual variation in demographic parameters, and possibly detection rates. The cause of longterm changes in abundance at Corner Inlet is not certain, but habitat destruction in staging areas, notably the Yellow Sea regions of China and Korea, is suggested as the main contributor with related changes in adult survival rates a more likely mechanism than changes
in breeding success. Interestingly, declines in several species were most pronounced over one or two years. This study emphasises the benefit of using the same route and observers over long periods to identify trends in abundance
Keyword Corner Inlet, Victoria
Shorebirds
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Non HERDC
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