Limits...
Space, time and aliens: charting the dynamic structure of Galápagos pollination networks.

Traveset A, Chamorro S, Olesen JM, Heleno R - AoB Plants (2015)

Bottom Line: We found that the pollination network structure was rather consistent between the two islands, but differed across habitats and seasons.It is thus likely that, in spite of the overall weak effect we found of alien plant invasion on pollination network structure, these introduced species influence the reproductive success of native ones, and by doing so, they affect the functioning of the community.This certainly deserves further investigation.

View Article: PubMed Central - PubMed

Affiliation: Laboratorio Internacional de Cambio Global (LINC-Global), Institut Mediterrani d'Estudis Avançats (CSIC-UIB), C/Miquel Marqués 21, 07190-Esporles, Mallorca, Balearic Islands, Spain atraveset@imedea.csic-uib.es.

No MeSH data available.


Mean (±1 SE) of the species-level parameters analysed in this study, for both pollinators and plants, showing differences among species of different origin for the 2 years of the study. Data from the two islands, three habitats and two seasons were pooled here for simplification. For each year, bars with the same letter indicate no differences across habitats (P > 0.05).
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PLV068F4: Mean (±1 SE) of the species-level parameters analysed in this study, for both pollinators and plants, showing differences among species of different origin for the 2 years of the study. Data from the two islands, three habitats and two seasons were pooled here for simplification. For each year, bars with the same letter indicate no differences across habitats (P > 0.05).

Mentions: In both years, alien pollinators showed lower linkage levels than both endemic and non-endemic natives (z = 6.45, d.f. = 415 and z = 3.83, d.f. = 265, P < 0.001, respectively), although in 2011 aliens and non-endemic natives did not differ significantly (z = 0.40, d.f. = 265, P = 0.69) (Fig. 4). Alien pollinators had lower d′ and st values than endemic ones in 2010 (t = 2.05, d.f. = 415, P = 0.04 and t = 4.74, d.f. = 415, P < 0.001, respectively; Fig. 4). In 2011, d′ did not differ between the two groups but st was again significantly lower for alien than for endemic pollinators (t = 2.56, d.f. = 265, P = 0.01; Fig. 4).Figure 4.


Space, time and aliens: charting the dynamic structure of Galápagos pollination networks.

Traveset A, Chamorro S, Olesen JM, Heleno R - AoB Plants (2015)

Mean (±1 SE) of the species-level parameters analysed in this study, for both pollinators and plants, showing differences among species of different origin for the 2 years of the study. Data from the two islands, three habitats and two seasons were pooled here for simplification. For each year, bars with the same letter indicate no differences across habitats (P > 0.05).
© Copyright Policy - creative-commons
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4522039&req=5

PLV068F4: Mean (±1 SE) of the species-level parameters analysed in this study, for both pollinators and plants, showing differences among species of different origin for the 2 years of the study. Data from the two islands, three habitats and two seasons were pooled here for simplification. For each year, bars with the same letter indicate no differences across habitats (P > 0.05).
Mentions: In both years, alien pollinators showed lower linkage levels than both endemic and non-endemic natives (z = 6.45, d.f. = 415 and z = 3.83, d.f. = 265, P < 0.001, respectively), although in 2011 aliens and non-endemic natives did not differ significantly (z = 0.40, d.f. = 265, P = 0.69) (Fig. 4). Alien pollinators had lower d′ and st values than endemic ones in 2010 (t = 2.05, d.f. = 415, P = 0.04 and t = 4.74, d.f. = 415, P < 0.001, respectively; Fig. 4). In 2011, d′ did not differ between the two groups but st was again significantly lower for alien than for endemic pollinators (t = 2.56, d.f. = 265, P = 0.01; Fig. 4).Figure 4.

Bottom Line: We found that the pollination network structure was rather consistent between the two islands, but differed across habitats and seasons.It is thus likely that, in spite of the overall weak effect we found of alien plant invasion on pollination network structure, these introduced species influence the reproductive success of native ones, and by doing so, they affect the functioning of the community.This certainly deserves further investigation.

View Article: PubMed Central - PubMed

Affiliation: Laboratorio Internacional de Cambio Global (LINC-Global), Institut Mediterrani d'Estudis Avançats (CSIC-UIB), C/Miquel Marqués 21, 07190-Esporles, Mallorca, Balearic Islands, Spain atraveset@imedea.csic-uib.es.

No MeSH data available.