Plant–flower visitor networks in a serpentine metacommunity: assessing traits associated with keystone plant species

Koski, Matthew H.; Meindl, George A.; Arceo‐Gómez, Gerardo; Wolowski, Marina; LeCroy, Kathryn A.; Ashman, Tia‐Lynn

doi:10.1007/s11829-014-9353-9

Cited by 45 publications

(95 citation statements)

References 66 publications

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“…Chlorogalum pomeridianum (37) Eschscholzia californica (31) Aquilegia eximia (1) Delphinium uliginosum (26)…”

Section: Dichelostemma Volubile (10)unclassified

“…Epilobium ciliatum (27) Clarkia concinna (31) Clarkia gracilis (39) Clarkia purpurea (21) Streptanthus breweri (40) Sidalcea diploscypha (33)…”

Section: Ranunculus Californicus (26)mentioning

confidence: 99%

“…Yet we still lack a clear 28 view as to how community-wide interactions between plants and pollinators contribute to the 29 persistence of rare species that are at greater extinction risk than more abundant ones (5-8). 30 Mechanisms such as niche partitioning (9) and facilitation (10) can help maintain rare species 31 (2). Niche partitioning can prevent interspecific competitive exclusion between rare and 32 abundant species.…”

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confidence: 99%

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Pollinator niche partitioning and asymmetric facilitation contribute to the maintenance of diversity

Wei

Kaczorowski

Arceo‐Gómez

et al. 2020

Preprint

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Abstract:Mechanisms that favor rare species are key to the maintenance of diversity. One of the most critical tasks for biodiversity conservation is understanding how plant–pollinator mutualisms contribute to the persistence of rare species, yet this remains poorly understood. Using a process-based model that integrates plant–pollinator and interspecific pollen transfer networks with floral functional traits, we show that niche partitioning in pollinator use and asymmetric facilitation confer fitness advantage of rare species in a biodiversity hotspot. While co-flowering species filtered pollinators via floral traits, rare species showed greater pollinator specialization leading to higher pollination-mediated male and female fitness than abundant species. When plants shared pollinator resources, asymmetric facilitation via pollen transport dynamics benefited the rare species at the cost of the abundant ones, serving as an alternative diversity-promoting mechanism. Our results emphasize the importance of community-wide plant–pollinator interactions that affect reproduction for biodiversity maintenance.

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“…Chlorogalum pomeridianum (37) Eschscholzia californica (31) Aquilegia eximia (1) Delphinium uliginosum (26)…”

Section: Dichelostemma Volubile (10)unclassified

“…Epilobium ciliatum (27) Clarkia concinna (31) Clarkia gracilis (39) Clarkia purpurea (21) Streptanthus breweri (40) Sidalcea diploscypha (33)…”

Section: Ranunculus Californicus (26)mentioning

confidence: 99%

mentioning

confidence: 99%

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Pollinator niche partitioning and asymmetric facilitation contribute to the maintenance of diversity

Wei

Kaczorowski

Arceo‐Gómez

et al. 2020

Preprint

Self Cite

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“…Flowers are zygomorphic and tubular, produce little or no nectar, and there is high variability among flowers in the quality of the pollen rewards (Robertson, Mountjoy, Faulkner, Roberts, & Macnair, 1999;Wu et al, 2008). In the field, monkeyflowers interact with a variety of insect pollinators of varying behaviours and sizes (Arceo-Gómez & Ashman, 2014;Koski et al, 2015). As a result, seep monkeyflower is highly generalized and well connected within the pollinator networks of these serpentine seeps (Koski et al, 2015).…”

Section: Study System and Speciesmentioning

confidence: 99%

“…In the field, monkeyflowers interact with a variety of insect pollinators of varying behaviours and sizes (Arceo-Gómez & Ashman, 2014;Koski et al, 2015). As a result, seep monkeyflower is highly generalized and well connected within the pollinator networks of these serpentine seeps (Koski et al, 2015).…”

Section: Study System and Speciesmentioning

confidence: 99%

Floral organs act as environmental filters and interact with pollinators to structure the yellow monkeyflower (Mimulus guttatus) floral microbiome

Gómez

Ashman

2019

Molecular Ecology

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Assembly of microbial communities is the result of neutral and selective processes. However, the relative importance of these processes is still debated. Microbial communities of flowers, in particular, have gained recent attention because of their potential impact to plant fitness and plant‐pollinator interactions. However, the role of selection and dispersal in the assembly of these communities remains poorly understood. Here, we evaluated the role of pollinator‐mediated dispersal on the contribution of neutral and selective processes in the assembly of floral microbiomes of the yellow monkeyflower (Mimulus guttatus). We sampled floral organs from flowers in the presence and absence of pollinators within five different serpentine seeps in CA and obtained 16S amplicon data on the epiphytic bacterial communities. Consistent with strong microenvironment selection within flowers we observed significant differences in community composition across floral organs and only a small effect of geographic distance. Pollinator exposure affected the contribution of environmental selection and depended on the rate and intimacy of interactions with flower visitors. This study provides evidence of the importance of dispersal and within‐flower heterogeneity in shaping epiphytic bacterial communities of flowers, and highlights the complex interplay between pollinator behaviour, environmental selection and additional abiotic factors in shaping the epiphytic bacterial communities of flowers.

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Variation in sampling effort affects the observed richness of plant–plant interactions via heterospecific pollen transfer: implications for interpretation of pollen transfer networks

Arceo‐Gómez

Alonso

Ashman

et al. 2018

American J of Botany

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The wide heterogeneity in the sampling effort required to accurately characterize pollen transfer interactions observed has the potential to influence the characterization of pollen transfer dynamics. Thus, sampling completeness should be considered in future studies to avoid overestimation of modularity and specialization in pollen transfer networks that may bias the predicted causes and expected consequences of such processes for plant-plant interactions.

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Plant–flower visitor networks in a serpentine metacommunity: assessing traits associated with keystone plant species

Cited by 45 publications

References 66 publications

Pollinator niche partitioning and asymmetric facilitation contribute to the maintenance of diversity

Pollinator niche partitioning and asymmetric facilitation contribute to the maintenance of diversity

Floral organs act as environmental filters and interact with pollinators to structure the yellow monkeyflower (Mimulus guttatus) floral microbiome

Variation in sampling effort affects the observed richness of plant–plant interactions via heterospecific pollen transfer: implications for interpretation of pollen transfer networks

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