Biological invasions of island nature reserves

Brockie, R. E.; Loope, Lloyd L.; Usher, Michael B.; Hamann, Ole

doi:10.1016/0006-3207(88)90003-1

Cited by 91 publications

(38 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Taken together, we may predict that benign, patchy environments with few top-level predators and comprising species that have undergone localized adaptations will be the most susceptible to invasions. These predictions receive support from recent reviews dealing with invasions on islands and in isolated reserves (Maciolek, 1984;Usher, 1986;Brockie et al, 1988;Loope et al, 1988;Usher, 1988). Finally, disturbance has long been recognized as a factor that facilitates invasions (Elton, 1958).…”

Section: Features Of the Environment That Increase Susceptibility To mentioning

confidence: 76%

The impact of introduced brown and rainbow trout on native fish: the case of Australasia

Crowl

Townsend

McIntosh

1992

Rev Fish Biol Fisheries

213

147

View full text Add to dashboard Cite

Section: Features Of the Environment That Increase Susceptibility To mentioning

confidence: 76%

The impact of introduced brown and rainbow trout on native fish: the case of Australasia

Crowl

Townsend

McIntosh

1992

Rev Fish Biol Fisheries

213

147

View full text Add to dashboard Cite

“…Even in remote archipelagos, such as the Galápagos, Mauritius and Hawaii, alien plants already outnumber native species [4][5][6]. Many of these aliens have high invasion rates owing to the long distance dispersal of their seeds [7].…”

Section: Introductionmentioning

confidence: 99%

Seed dispersal networks in the Galápagos and the consequences of alien plant invasions

et al. 2013

View full text Add to dashboard Cite

Alien plants are a growing threat to the Galápagos unique biota. We evaluated the impact of alien plants on eight seed dispersal networks from two islands of the archipelago. Nearly 10 000 intact seeds from 58 species were recovered from the droppings of 18 bird and reptile dispersers. The most dispersed invaders were Lantana camara, Rubus niveus and Psidium guajava, the latter two likely benefiting from an asynchronous fruit production with most native plants, which facilitate their consumption and spread. Lava lizards dispersed the seeds of 27 species, being the most important dispersers, followed by small ground finch, two mockingbirds, the giant tortoise and two insectivorous birds. Most animals dispersed alien seeds, but these formed a relatively small proportion of the interactions. Nevertheless, the integration of aliens was higher in the island that has been invaded for longest, suggesting a time-lag between alien plant introductions and their impacts on seed dispersal networks. Alien plants become more specialized with advancing invasion, favouring more simplified plant and disperser communities. However, only habitat type significantly affected the overall network structure. Alien plants were dispersed via two pathways: dryfruited plants were preferentially dispersed by finches, while fleshy fruited species were mostly dispersed by other birds and reptiles.

show abstract

“…The eradication or control of such alien plant and animal species has been advocated to reverse alien species induced population decline (e.g. Brockie et al 1988) and can be useful as an indirect tool to improve the understanding of invasive species impacts on indigenous biodiversity (D'Antonio et al 1998). Over half of the world's biodiversity comprises insects, the majority of which inhabits tropical forests (Holloway and Stork 1991).…”

Section: Introductionmentioning

confidence: 99%

Recovery of indigenous butterfly community following control of invasive alien plants in a tropical island’s wet forests

et al. 2010

View full text Add to dashboard Cite

Invasive alien species pose one of the highest threats to biodiversity, especially in isolated oceanic islands where high rates of both endemism and extinction risk also usually prevail. Few studies have investigated the impact of invasive alien plants on butterflies in insular ecosystems, despite butterflies representing a key indicator group for terrestrial arthropod diversity. Using the Pollard Technique, we quantified butterfly species richness and abundance in eight wet lowland forest areas invaded by alien plants, principally the strawberry guava (Psidium cattleianum Sabine) on the tropical volcanic island of Mauritius, and compared the results with paired adjacent forest plots that had been weeded of alien plants between 2 and 12 years previously. Butterfly assemblages in weedinfested and weeded forests were distinctly different with higher species richness and much higher butterfly abundance in the latter. At least some of these differences seemed attributable to weed removal effects on forest structure, but understanding the precise mechanisms involved will require further study. The results suggest that alien plant invasion may have contributed to the extinction of certain endemic taxa and can increase the likelihood of butterfly species extinction by reducing population sizes through reduced habitat quality. Such a shift in a forest's butterfly assemblage is likely to have negative effects on both their indigenous predators and the plants they pollinate. It is argued that in order to maintain butterfly and other arthropod diversity and function in these forests, alien plant control must be maintained and extended beyond the current 1% of surviving forest remnants.

show abstract

Biological invasions of island nature reserves

Cited by 91 publications

References 23 publications

The impact of introduced brown and rainbow trout on native fish: the case of Australasia

The impact of introduced brown and rainbow trout on native fish: the case of Australasia

Seed dispersal networks in the Galápagos and the consequences of alien plant invasions

Recovery of indigenous butterfly community following control of invasive alien plants in a tropical island’s wet forests

Contact Info

Product

Resources

About