Seasonal Patterns of Abundance of Tundra Arthropods near Barrow

Arthropods active on the surface of the tundra near Barrow, Alaska, were trapped throughout four summer seasons (1966-1969), using "sticky-board" traps. More than 95% of the arthropods (excluding Acarina and Collembola) captured were of the order Diptera. Adults of most species of Diptera...

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Bibliographic Details
Published in:ARCTIC
Main Authors: MacLean, Jr., S.F., Pitelka, F.A.
Format: Article in Journal/Newspaper
Language:English
Published: The Arctic Institute of North America 1971
Subjects:
Online Access:https://journalhosting.ucalgary.ca/index.php/arctic/article/view/66161
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Summary:Arthropods active on the surface of the tundra near Barrow, Alaska, were trapped throughout four summer seasons (1966-1969), using "sticky-board" traps. More than 95% of the arthropods (excluding Acarina and Collembola) captured were of the order Diptera. Adults of most species of Diptera emerged in the middle two weeks of July; the abundance of arthropods on the tundra surface was maximal at that time. Year-to-year variations in abundance of various arthropod taxa are related to prevailing weather conditions and to the cycle of tundra disturbance and recovery associated with the abundance of brown lemmings. Modalités de l’abondance des arthropodes de la toundra selon les saisons, près de Barrow. Près de Barrow, Alaska, on a, ou cours des quatre étés (1966-1969), capturé au moyen de pièges à glu les arthropodes actifs à la surface de la toundra. Plus de 95 pour cent des arthropodes capturés (à l’exclusion des Acariens et des Collemboles) appartenaient à l’ordre des Diptères. Les adultes de la plupart des espèces de Diptères apparaissaient au cours des deux semaines du milieu de juillet: c’est à ce moment que les arthropodes étaient les plus nombreux à la surface de la toundra. Les variations annuelles d’abondance des divers taxa d’arthropodes sont liées aux conditions du temps et au cycle de déprédation et de reprise de la toundra selon l’abondance des lemmings.