Seasonal timing of the spring departure of waders from the Banc D'Arguin, Mauritania

Piersma, Theunis, Klaassen, Marcel, Bruggemann, J. Henrich, Blomert, Anne-Marie, Gueye, Abou, Ntiamoa-Baidu, Yaa and Van Bedrerode, Nelly E. 1990, Seasonal timing of the spring departure of waders from the Banc D'Arguin, Mauritania, Ardea, vol. 78, no. 1-2, pp. 123-134.

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Title Seasonal timing of the spring departure of waders from the Banc D'Arguin, Mauritania
Author(s) Piersma, Theunis
Klaassen, MarcelORCID iD for Klaassen, Marcel
Bruggemann, J. Henrich
Blomert, Anne-Marie
Gueye, Abou
Ntiamoa-Baidu, Yaa
Van Bedrerode, Nelly E.
Journal name Ardea
Volume number 78
Issue number 1-2
Start page 123
End page 134
Total pages 12
Publisher BioOne
Place of publication Amsterdam, The Netherlands
Publication date 1990-01
ISSN 0373-2266
Keyword(s) Science & Technology
Life Sciences & Biomedicine
Summary The northward departure of 13 wader species was studied in the Baie d' Aouatif, Bane d'Arguin, Mauritania, in the springs of 1985, 1986 and 1988. Waders left the area in the late afternoon. Wind speed and direction were registered near ground level (all years) and at altitudes up to 5 km (in 1988). A total of 31 000 waders were observed heading northwards, with those species wintering locally in largest numbers being most common. The majority of wader species showed fairly short periods of departure and unimodal departure peaks. Redshank and Dunlin departed over extended periods. Average departure dates of species correlated positively with the estimated midpoints of ranges in breeding latitude (ca. 2 d per 0 latitude).  Since winds at ground level did not correlate with winds at higher altitudes, and since it is likely that the departing waders traveled at great heights, it was not surprising that there is no correlation between the average afternoon tail wind vector at ground level and the daily departure intensity. We suggest that the timing ofdeparture from the Bane d'Arguin is largely under internal, instead of under direct environmental, control.
Language eng
Field of Research 060801 Animal Behaviour
Socio Economic Objective 970106 Expanding Knowledge in the Biological Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©1990, BioOne
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