LafleurParsonsBradleyEtAl2006

Référence

Lafleur, B., Parsons, W.F.J., Bradley, R.L. and Francoeur, A. (2006) Ground-nesting ant assemblages and their relationships to habitat factors along a chronosequence of postfire-regenerated lichen-spruce woodland. Environmental Entomology, 35(6):1515-1524.

Résumé

Ground-nest densities and nesting habits of 13 ant species were quantified in five postfire age classes (1, 9, 23, 47, and 79 yr old) in the lichen-spruce woodland of Quebec, Canada. There were no significant differences in ant nest densities between age-classes (average of 163 nests/ha), but there were significant differences in ant community structure. Ant communities were dominated by Formica podzolica, F. aserva, F. hewetti, and Myrmica detritinodis, which accounted for 77% of occupied nests. Some species (e.g., F. podzolica) were specialists in their nesting habits, whereas others (e.g., F. aserva) were generalists and built their nest in a variety of substrates. Nest densities of F. aserva correlated with several habitat factors, but these correlations could have been spurious because they were not related to this species' nesting habits. However, significant positive correlations found between Camponotus herculeanus and Leptothorax canadensis and coarse woody debris (CWD) may be biologically significant, because these two species nested exclusively within CWD. Nest densities of M. detritinodis and M. fracticornis were relatively high in the youngest and the oldest age classes, resulting in a negative correlation with CWD. We suggest that the distribution of these two species is caused by their preference for older forests to a high rate of fire survival and possibly to competitive release in the year after disturbance. According to canonical correspondence analysis, at least 75% of the variation in ant species cannot be explained by the habitat factors measured. Future research should include, therefore, experimental manipulations to determine the extent to which other factors, such as interspecific interactions, may structure ant communities in lichen-spruce woodland. © 2006 Entomological Society of America.

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@ARTICLE { LafleurParsonsBradleyEtAl2006,
    AUTHOR = { Lafleur, B. and Parsons, W.F.J. and Bradley, R.L. and Francoeur, A. },
    TITLE = { Ground-nesting ant assemblages and their relationships to habitat factors along a chronosequence of postfire-regenerated lichen-spruce woodland },
    JOURNAL = { Environmental Entomology },
    YEAR = { 2006 },
    VOLUME = { 35 },
    PAGES = { 1515-1524 },
    NUMBER = { 6 },
    ABSTRACT = { Ground-nest densities and nesting habits of 13 ant species were quantified in five postfire age classes (1, 9, 23, 47, and 79 yr old) in the lichen-spruce woodland of Quebec, Canada. There were no significant differences in ant nest densities between age-classes (average of 163 nests/ha), but there were significant differences in ant community structure. Ant communities were dominated by Formica podzolica, F. aserva, F. hewetti, and Myrmica detritinodis, which accounted for 77% of occupied nests. Some species (e.g., F. podzolica) were specialists in their nesting habits, whereas others (e.g., F. aserva) were generalists and built their nest in a variety of substrates. Nest densities of F. aserva correlated with several habitat factors, but these correlations could have been spurious because they were not related to this species' nesting habits. However, significant positive correlations found between Camponotus herculeanus and Leptothorax canadensis and coarse woody debris (CWD) may be biologically significant, because these two species nested exclusively within CWD. Nest densities of M. detritinodis and M. fracticornis were relatively high in the youngest and the oldest age classes, resulting in a negative correlation with CWD. We suggest that the distribution of these two species is caused by their preference for older forests to a high rate of fire survival and possibly to competitive release in the year after disturbance. According to canonical correspondence analysis, at least 75% of the variation in ant species cannot be explained by the habitat factors measured. Future research should include, therefore, experimental manipulations to determine the extent to which other factors, such as interspecific interactions, may structure ant communities in lichen-spruce woodland. © 2006 Entomological Society of America. },
    ADDRESS = { De?partement des Sciences Fondamentales, Universite? du Que?bec A? Chicoutimi, Chicoutimi, Que. G7H 2B1, Canada },
    COMMENT = { Export Date: 24 August 2007 Source: Scopus CODEN: EVETB doi: 10.1603/0046-225X(2006)35[1515:GAAATR]2.0.CO;2 Language of Original Document: English Correspondence Address: Bradley, R.L.; De?partement de Biologie; Universite? de Sherbrooke Sherbrooke, Que. J1K 2R1, Canada; email: robert.bradley@usherbrooke.ca },
    ISSN = { 0046225X (ISSN) },
    KEYWORDS = { Ant community, Habitat, Lichen-spruce woodland, Postfire chronosequence },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.05 },
}

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