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Invasive rat control is an efficient, yet insufficient, method for recovery of the critically endangered Hawaiian plant hau kuahiwi (Hibiscadelphus giffardianus)

Gill, Nathan S ; Yelenik, Stephanie ; Banko, Paul ; Dixon, Christopher B ; Jaenecke, Kelly ; Peck, Robert Brewer, Michael Scott

PloS one, 2018-11, Vol.13 (11), p.e0208106-e0208106 [Periódico revisado por pares]

United States: Public Library of Science

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Título:
Invasive rat control is an efficient, yet insufficient, method for recovery of the critically endangered Hawaiian plant hau kuahiwi (Hibiscadelphus giffardianus)
Autor: Gill, Nathan S ; Yelenik, Stephanie ; Banko, Paul ; Dixon, Christopher B ; Jaenecke, Kelly ; Peck, Robert
Brewer, Michael Scott
Assuntos: Animals ; Biology and Life Sciences ; Climate ; Conservation ; Dispersal ; Dispersion ; Earth Sciences ; Ecology and Environmental Sciences ; Endangered plants ; Endangered Species ; Flowers & plants ; Fruit ; Fruits ; Genetic aspects ; Germination ; Hawaii ; Hibiscadelphus bombycinus ; Hibiscadelphus giffardianus ; Inhibitors ; Introduced Species ; Invasive plants ; Invasive species ; Malvaceae ; Malvaceae - growth & development ; Methods ; National parks ; Pest Control ; Plant species ; Population control ; Population Density ; Predation ; Predation (Biology) ; Rat control ; Rats ; Recovery (Medical) ; Research and Analysis Methods ; Rodent control ; Rodents ; Seed Dispersal ; Seedlings ; Seeds ; Trees
É parte de: PloS one, 2018-11, Vol.13 (11), p.e0208106-e0208106
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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Competing Interests: The authors have declared that no competing interests exist.
Descrição: Biological invasions of rodents and other species have been especially problematic on tropical islands. Invasive Rattus rattus consumption of Hibiscadelphus giffardianus (Malvaceae; common Hawaiian name hau kuahiwi) fruit and seeds has been hypothesized to be the most-limiting factor inhibiting the critically endangered tree, but this has not been experimentally tested, and little is known about other factors affecting seed dispersal, germination, and seedling establishment. Thus, we do not know if rat removal is sufficient to increase hau kuahiwi recruitment. This study aims to evaluate the effect of rat population control on the ability of hau kuahiwi to retain fruit and establish seedlings. We compared hau kuahiwi fruiting and seedling recruitment in a stand treated to reduce rat abundance and a neighbouring control stand. Fruit retention increased following treatment but seedling establishment did not. Although rat control improves the ability of hau kuahiwi to retain fruit, other, presently unknown inhibitors to seed dispersal, germination, and/or seedling development remain. Seed and seedling predation by other species, competition from numerous invasive plant species, unsuitable climate, and/or other factors may be primary inhibitors in the absence of rats, but we emphasize that progressive isolation of these factors at individual hau kuahiwi life stages may be necessary to identify the remaining threats to the conservation of this critically endangered plant.
Editor: United States: Public Library of Science
Idioma: Inglês

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Invasive rat control is an efficient, yet insufficient, method for recovery of the critically endangered Hawaiian plant hau kuahiwi (Hibiscadelphus giffardianus)

Gill, Nathan S ; Yelenik, Stephanie ; Banko, Paul ; Dixon, Christopher B ; Jaenecke, Kelly ; Peck, Robert Brewer, Michael Scott

United States: Public Library of Science

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