Read e-book online Alien Species and Insect Conservation PDF

By Tim R. New

This assessment of the jobs of alien species in insect conservation brings jointly details, facts and examples from many components of the area to demonstrate their affects (often serious, yet in lots of situations poorly understood and unpredictable) as one of many fundamental drivers of species declines, ecological adjustments and biotic homogenisation. either unintended and planned activities of species are concerned, with alien invasive vegetation and bugs the most important teams of outrage for his or her affects on local bugs and their environments. probability exams, prompted principally via fears of non-target affects of classical organic regulate brokers brought for pest administration, have supplied priceless classes for wider conservation biology. They emphasise the desires for potent biosecurity, chance avoidance and minimisation, and review and administration of alien invasive species as either significant parts of many insect species conservation programmes and harbingers of swap in invaded groups. The unfold of hugely adaptable ecological generalist invasive species, that are typically tough to discover or display screen, might be associated with declines and losses of diverse localised ecologically specialized bugs and disruptions to complex ecological interactions and capabilities, and create novel interactions with far-reaching results for the receiving environments. figuring out invasion approaches and predicting affects of alien species on vulnerable local bugs is a crucial subject matter in functional insect conservation.

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J Appl Ecol 50:147–155 Henneman ML, Memmott J (2001) Infiltration of a Hawaiian community by introduced biological control agents. Science 293:1314–1316 Holway DA, Suarez AV, Tsutsui ND, Case TD (2002) The causes and consequences of ant invasions. Annu Rev Ecol Syst 33:181–133 Huxel GR (2000) The effect of the Argentine ant on the threatened valley elderberry longhorn beetle. Biol Invasions 2:81–85 Ingram KK, Bernadello G, Cover S, Wilson EO (2006) The ants of the Juan Fernandez Islands: genesis of an invasive fauna.

Dahlbomii, it now seems clear that they functionally substituted for, and enhanced, the role of that endemic species. The wider effects of B. dahlbomii declines as a key mutualist pollinator of Alstroemeria aurea (Alstroemeraceae) are still somewhat unclear. Aizen et al. (2008) noted its displacement by B. ruderatus, a less effective pollinator because of its small size, and that this might select for smaller flowers. Maintenance of native pollinator mutualisms poses intricate ecological problems as they become invaded by alien species, and native pollinators become vulnerable.

Most species were treated in rather few papers – but the most intensively studied invasive insect (the Argentine ant, Linepithema humile, p. 159) was the subject of 61 studies. Numbers of alien insect species in different places, although commonly high, pose some intriguing questions of their genesis and similarity. Thus, Yamanaka et al. (2015) pondered whether (1) a single pool of species, originating from the same areas and following similar invasion pathways, is the source of most insect invasions worldwide, or (2) insect invasions in each region are unique, and reflect an individualistic set of origins and pathways.

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