Non-native honey bees disproportionately dominate the most abundant floral resources in a biodiversity hotspot

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2019, Volume and Issue: 286(1897), P. 20182901 - 20182901

Published: Feb. 20, 2019

Most plant–pollinator mutualisms are generalized. As such, they susceptible to perturbation by abundant, generalist, non-native pollinators such as the western honey bee ( Apis mellifera ), which can reach high abundances and visit flowers of many plant species in their expansive introduced range. Despite prevalence bees, effects on pollination natural ecosystems remain incompletely understood. Here, we contrast community-level patterns floral visitation bees with that diverse native pollinator fauna southern California, USA. We show number visiting increases much more rapidly flower abundance than does non-honey insects, percentage all visitors represented abundance. Thus, could disproportionately impact most abundantly blooming large numbers both specialized generalized sustain. Honey may preferentially exploit high-abundance resources because ability recruit nest-mates; these foraging cause insect forage lower-abundance avoid competition. Our results illustrate importance understanding order reveal ecological impacts.

Language: Английский

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The impact of interactions on invasion and colonization resistance in microbial communities

PLoS Computational Biology, Journal Year: 2021, Volume and Issue: 17(1), P. e1008643 - e1008643

Published: Jan. 22, 2021

In human microbiota, the prevention or promotion of invasions can be crucial to health. Invasion outcomes, in turn, are impacted by composition resident communities and interactions members with invader. Here we study how influence invasion outcomes microbial communities, when primarily mediated chemicals that released into consumed from environment. We use a previously developed dynamic model which explicitly includes species abundances concentrations mediate interaction. Using this model, assessed impact simulating new being introduced an existing community. classified as resistance, augmentation, displacement, disruption depending on whether richness community was maintained decreased invader went extinct. found number invaders increased, rather than augmentation became more prevalent. With facilitation community, resistance were replaced displacement augmentation. By contrast, among residents, shifted resistance. When eliminated, majority turned while inhibition residents largely unaffected. Our results suggest better understanding within between is predicting success communities.

Language: Английский

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Facilitation and the invasibility of plant communities

Journal of Ecology, Journal Year: 2021, Volume and Issue: 109(5), P. 2019 - 2028

Published: Feb. 14, 2021

Abstract One of the most studied emergent functions plant community diversity is resistance diverse communities to non‐native invasions. As emphasized in this Special Feature, facilitation among native species a key mechanism by which biodiversity increases various functions, including invasion. However, when assemblages facilitate species, diversity–invasibility may be compromised. Here, I review scientific literature on invasion facilitative interactions, either and or affect invasibility. Native can directly also generate net indirect effects through suppressing that compete with invaders, but examples latter are not common. Such direct contributes ‘invasional meltdown’ restructures communities. In general, interactions between increased environmental stress, suggesting might resist more effectively environmentally favourable sites, whereas severe contribute Synthesis . each other ways, important consequences for invasibility Facilitative alter fundamental relationship invasibility, particularly habitats.

Language: Английский

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Impacts of plant invasions in native plant–pollinator networks

New Phytologist, Journal Year: 2021, Volume and Issue: 230(6), P. 2117 - 2128

Published: March 12, 2021

Summary The disruption of mutualisms by invasive species has consequences for biodiversity loss and ecosystem function. Although plant effects on the pollination individual native been subject much study, their impacts entire plant–pollinator communities are less understood. Community‐level studies invasion have mainly focused two fronts: understanding mechanisms that mediate integration; network structure. Here we briefly review current knowledge propose a more unified framework evaluating integration communities. We further outline gaps in our ways to advance this field. Specifically, modeling approaches so far yielded important predictions regarding outcome drivers However, experimental test these field lacking. emphasize need understand link between structure population dynamics (population growth). Integrating demographic with those networks is thus key order achieve predictive pollinator‐mediated persistence biodiversity.

Language: Английский

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Anthropogenic impacts on plant-animal mutualisms: A global synthesis for pollination and seed dispersal

Biological Conservation, Journal Year: 2022, Volume and Issue: 266, P. 109461 - 109461

Published: Jan. 20, 2022

Language: Английский

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