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  • 1990-1994  (2)
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  • 1
    ISSN: 1420-9098
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Resume L'activité d'affouragement de 4 genres (6 espèces) de fourmis de prairie (Formica rufibarbis, Tapinoma erraticum, Myrmica schenki, M. sabuleti, Tetramorium caespitum etT. impurum) a été observée au cours des mois de juin–juillet 1985 à Treignes (Belgique). L'activité des fourrageuses sur le terrain est estimée par des observations séquentielles de flux d'ouvrières pendant 30 secondes à travers le périmètre de quadrats de 0,5×0,5m. Les vitesses de déplacement des fourmis sur le terrain ayant aussi été mesurées, les flux sont transformés en densités de fourrageuses. Ces dernières sont cartographiées et étudiées en fonction de paramètres climatiques. Elles sont ensuite soumises à une analyse des niches écologiques. Les quatre genres étudiés occupent des niches réalisées qui apparaissent bien séparées sur la seule base de la répartition spatio-temporelle de leur activité diurne d'affouragement.
    Notes: Summary The foraging activities of four genera (six species) of grassland ants (Formica rufibarbis, Tapinoma erraticum, Myrmica schenki, M. sabuleti, Tetramorium caespitum andT. impurum) were observed in June–July 1985 at Treignes (Belgium). Foraging activity was assessed by taking sequential records of foragers' fluxes during 30 seconds through the perimeter of 0.5×0.5m adjacent field quadrats. The ants' velocities were also measured in the field; knowing their fluxes, it was possible to calculate the densities of foragers. The latter were mapped and studied as a function of climatic parameters, to understand the niche relationships of these ants. Regarding their diurnal spatio-temporal foraging activities, the four genera were found to occupy well separated realized niches.
    Type of Medium: Electronic Resource
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  • 2
    Publication Date: 1990-06-01
    Print ISSN: 0022-5193
    Electronic ISSN: 1095-8541
    Topics: Biology
    Published by Elsevier
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