Avoiding perceived past resource use of potential competitors affects niche dynamics in a bird community
Forsman, J. T., Kivelä, S. M., Jaakkonen, T., Seppänen, J.-T., Gustafsson, L., & Doligez, B. (2014). Avoiding perceived past resource use of potential competitors affects niche dynamics in a bird community. BMC evolutionary biology, 14, Article 175. https://doi.org/10.1186/s12862-014-0175-2
Published inBMC evolutionary biology
© 2014 BioMed Central Ltd. Further distribution has been made available under the terms of the Creative Commons Attribution License 4.0.
Abstract. Background: Social information use is usually considered to lead to ecological convergence among involved con- or heterospecific individuals. However, recent results demonstrate that observers can also actively avoid behaving as those individuals being observed, leading to ecological divergence. This phenomenon has been little explored so far, yet it can have significant impact on resource use, realized niches and species co-existence. In particular, the time-scale and the ecological context over which such shifts can occur are unknown. We examined with a long-term (four years) field experiment whether experimentally manipulated, species-specific, nest-site feature preferences (symbols on nest boxes) are transmitted across breeding seasons and affect future nest-site preferences in a guild of three cavity-nesting birds. Results: Of the examined species, resident great tits ( Parus major ) preferred the symbol that had been associated with unoccupied nest boxes in the previous year, i.e., their preference shifted towards niche space previously unused by putative competitors and conspecifics. Conclusions: Our results show that animals can remember the earlier resource use of conspecifics and other guild members and adjust own decisions accordingly one year after. Our experiment cannot reveal the ultimate mechanism(s) behind the observed behaviour but avoiding costs of intra- or interspecific competition or ectoparasite load in old nests are plausible reasons. O ur findings imply that interspecific social information use can affect resource sharing and realized niches in ecological time-scale through active avoidance of observed decisions and behavior of potentially competing species. ...
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Except where otherwise noted, this item's license is described as © 2014 BioMed Central Ltd. Further distribution has been made available under the terms of the Creative Commons Attribution License 4.0.
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Is it interspecific information use or aggression between putative competitors that steers the selection of nest-site characteristics? A reply to Slagsvold and Wiebe Forsman, Jukka T.; Seppänen, Janne-Tuomas; Mönkkönen, Mikko; Thomson, Robert L.; Kivelä, Sami M.; Krams, Indrikis; Loukola, Olli J. (Wiley-Blackwell Publishing Ltd., 2018)A growing number of studies have demonstrated that heterospeciﬁc individuals with overlapping resource needs – putative competitors – can provide information to each other that improves the outcomes of decisions. Our studies ...
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