Seed Dispersal of the Chinese Tallow Tree (Sapium sebiferum (L.) Roxb.) by Birds in Coastal South Carolina

Renne, Ian J.; Gauthreaux, Sidney A.; Gresham, Charles A.

doi:10.1674/0003-0031(2000)144[0202:sdotct]2.0.co;2

Cited by 72 publications

(61 citation statements)

References 53 publications

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“…In Argentina, an estimated 60% of L. lucidum fruits were taken by birds (Montaldo 2000). In invaded regions of South Carolina, birds removed 40% of the available T. sebifera crop (Renne et al 2000). Since the value obtained here for L. lucidum exceeds published reports, I conclude that this species likely receives sufficient dispersal in California to permit its spread.…”

Section: Discussionmentioning

confidence: 45%

“…The species has become highly invasive in the southeastern U.S., where it infests large floodplain, wetland, and low-lying forest areas, enriching soil and forming monocultures that displace native species (Bruce et al 1997;Cameron and Spencer 1989;Jubinsky and Anderson 1996). Fourteen bird species in the invaded region have been shown to consume T. sebifera seeds (Renne et al 2000). Fruits are capsules that dehisce with maturity to reveal 2-3 round seeds, each encased in a white, waxy aril.…”

Section: Triadica Sebiferamentioning

confidence: 99%

“…When calculating rates of fruit removal, I combined counts of fruits swallowed and of fruits taken in flight to generate a total estimate of fruits dispersed per focal individual (after Renne et al 2000). I calculated the rate of dispersal as the number of fruits dispersed per individual per minute per tree, averaged across all observations on that stand.…”

Section: Bird Removal and Consumption Of Study Species Fruitsmentioning

confidence: 99%

“…To compare the dispersal importance of each bird species for each plant species, I calculated Flock Dispersal Importance (FDI) and Overall Dispersal Importance (ODI) after Renne et al (2000) for all bird-plant species combinations. FDI is the product of the average per-individual fruit dispersal rate and the average number of individuals per species (i.e., flock size) detected per tree during scan sampling; it provides an estimate of dispersal importance per foraging bout of a given bird species.…”

Section: Bird Removal and Consumption Of Study Species Fruitsmentioning

confidence: 99%

“…Among bird-dispersed plants, species cover a spectrum of mutualism efficiency: on one extreme, plants produce many more fruits than are removed by bird dispersers, while on the other, nearly all available fruits are removed (Herrera 1984;Renne et al 2000). A number of factors may influence bird visitation to fruiting plants.…”

Section: Introductionmentioning

confidence: 99%

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Implications of newly-formed seed-dispersal mutualisms between birds and introduced plants in northern California, USA

Aslan

2011

Biol Invasions

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I examined the role of bird dispersal in invasiveness of three non-native plant species in California, USA: Triadica sebifera, Ligustrum lucidum, and Olea europaea. I selected these species because their invasiveness in California is uncertain, but a survey of ornithologists highlighted them as likely bird-dispersed. I quantified bird frugivory of these plants, compared them with a native species (Heteromeles arbutifolia), and explored the management implications of dispersal mutualisms for these and other incipient invasive plants. Fruit removal by birds was sufficient to permit spread for all study species. Seed dispersers (rather than seed predators) and pulse feeders (flocking species with potential for long distance dispersal) performed most fruit removal for the non-native species, a pattern indicative of an effective dispersal regime. The number of fruiting trees per stand was a significant predictor of bird visitation. Founding population size may thus be important in management of invasive, bird-dispersed plants. Disperser-defined niches were relatively narrow because a few disperser species performed the majority of fruit removal from study trees, but each fruit species was consumed by a variety of potential dispersers. This results in strong pairwise niche overlap between some plant species. Ordinated by bird use, study site-species combinations clustered more by geographic location than by plant species, emphasizing the opportunistic nature of bird foraging. None of the non-native focal plant species appears dispersal limited, and all have formed novel mutualisms in California. It is possible that these plants are now in lag phases preceding bird-mediated invasion. Consideration of bird dispersal when evaluating invasiveness is therefore an imperative.

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Section: Discussionmentioning

confidence: 45%

Section: Triadica Sebiferamentioning

confidence: 99%

Section: Bird Removal and Consumption Of Study Species Fruitsmentioning

confidence: 99%

Section: Bird Removal and Consumption Of Study Species Fruitsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Implications of newly-formed seed-dispersal mutualisms between birds and introduced plants in northern California, USA

Aslan

2011

Biol Invasions

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A Selection of Special Environments

Chapman

Bolen

2015

Ecology of North America

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Non‐native insects dominate daytime pollination in a high‐elevation Hawaiian dryland ecosystem

Aslan

Shiels²,

Haines

et al. 2019

American J of Botany

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PREMISE OF THE STUDY:Over one-third of the native flowering plant species in the Hawaiian Islands are listed as federally threatened or endangered. Lack of sufficient pollination could contribute to reductions in populations, reproduction, and genetic diversity among these species but has been little studied. METHODS:We used systematic observations and manual flower treatments to quantify flower visitation and outcrossing dependency of eight native (including four endangered) plant species in a dryland ecosystem in Hawaii: Argemone glauca, Bidens menziesii, Dubautia linearis, Haplostachys haplostachya, Sida fallax, Silene lanceolata, Stenogyne angustifolia, and Tetramolopium arenarium.KEY RESULTS: During 576.36 h of flower observations, only insects visited the flowers. Out of all recorded flower visits, 85% were performed by non-native species, particularly the honeybee (Apis mellifera) and flies in the family Syrphidae. Some plant species received little visitation (e.g., S. angustifolia received one visit in 120 h of observation), whereas others were visited by a wide diversity of insects. The endangered plant species were visited by fewer visitor taxa than were the common native plant species. For six of the focal plant species, bagging of flowers to exclude pollinators resulted in significant reductions in seed set. CONCLUSIONS:The flower visitor community in this system, although heavily dominated by non-native insects, appears to be facilitating pollination for multiple plant species. Non-native insects may thus be sustaining biotic interactions otherwise threatened with disruption in this island ecosystem. This may be particularly important for the studied endangered plant species, which exhibit fewer partners than the more common plant species.

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Seed Dispersal of the Chinese Tallow Tree (Sapium sebiferum (L.) Roxb.) by Birds in Coastal South Carolina

Cited by 72 publications

References 53 publications

Implications of newly-formed seed-dispersal mutualisms between birds and introduced plants in northern California, USA

Implications of newly-formed seed-dispersal mutualisms between birds and introduced plants in northern California, USA

A Selection of Special Environments

Non‐native insects dominate daytime pollination in a high‐elevation Hawaiian dryland ecosystem

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