Invertebrate survey of a modified native shrubland, Brookdale Covenant, Rock and Pillar Range, Otago, New Zealand

Derraik, José G. B.; Barratt, B. I. P.; Sirvid, Phil J.; Macfarlane, R. P.; Patrick, Brian; Early, John W.; Eyles, A. C.; Johns, P. M.; Fraser, P. M.; Barker, G. M.; Henderson, Rosa C.; Dale, Pam J.; Harvey, Mark S.; Fenwick, Graham D.; McLellan, I. D.; Dickinson, Katharine J. M.; Closs, Gerard P.

doi:10.1080/03014223.2001.9518270

Cited by 17 publications

(8 citation statements)

References 32 publications

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“…Many species in the orders Hemiptera (true bugs) and Lepidoptera and a few Thysanoptera (thrips) and Coleoptera (beetles) species are considered host specific during some or all life stages (Triplehorn & Johnson ), and these species may be greatly affected by increased abundance of novel plants (Tables ). When an invasive plant dominates the vegetation community, hemipterans may be less abundant (e.g., Spyreas et al ; Holmquist et al ; Bassett et al ) or absent (e.g., Samways et al ; Derraik et al , Table ), resulting in changes in composition. Although little research has focused on nonagricultural systems, Thysanoptera also may be less abundant or absent in areas dominated by invasive plants (e.g., Derraik et al ; Lindsay & French ; Holmquist et al , Table ).…”

Section: Effects On Herbivoresmentioning

confidence: 99%

“…When an invasive plant dominates the vegetation community, hemipterans may be less abundant (e.g., Spyreas et al ; Holmquist et al ; Bassett et al ) or absent (e.g., Samways et al ; Derraik et al , Table ), resulting in changes in composition. Although little research has focused on nonagricultural systems, Thysanoptera also may be less abundant or absent in areas dominated by invasive plants (e.g., Derraik et al ; Lindsay & French ; Holmquist et al , Table ). Relatively few researchers considered responses of specialist Coleoptera to invasive plants, particularly Curculionidae (weevils), although Cord () documented reduced presence of weevils with invasive grass, Harris et al () found this group only on specific plants, and Marshall and Buckley () did not detect changes in abundance.…”

Section: Effects On Herbivoresmentioning

confidence: 99%

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Effects of Invasive Plants on Arthropods

Litt

Cord

Fulbright

et al. 2014

Conservation Biology

153

148

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Non-native plants have invaded nearly all ecosystems and represent a major component of global ecological change. Plant invasions frequently change the composition and structure of vegetation communities, which can alter animal communities and ecosystem processes. We reviewed 87 articles published in the peer-reviewed literature to evaluate responses of arthropod communities and functional groups to non-native invasive plants. Total abundance of arthropods decreased in 62% of studies and increased in 15%. Taxonomic richness decreased in 48% of studies and increased in 13%. Herbivorous arthropods decreased in response to plant invasions in 48% of studies and increased in 17%, likely due to direct effects of decreased plant diversity. Predaceous arthropods decreased in response to invasive plants in 44% of studies, which may reflect indirect effects due to reductions in prey. Twenty-two percent of studies documented increases in predators, which may reflect changes in vegetation structure that improved mobility, survival, or web-building for these species. Detritivores increased in 67% of studies, likely in response to increased litter and decaying vegetation; no studies documented decreased abundance in this functional group. Although many researchers have examined effects of plant invasions on arthropods, sizeable information gaps remain, specifically regarding how invasive plants influence habitat and dietary requirements. Beyond this, the ability to predict changes in arthropod populations and communities associated with plant invasions could be improved by adopting a more functional and mechanistic approach. Understanding responses of arthropods to invasive plants will critically inform conservation of virtually all biodiversity and ecological processes because so many organisms depend on arthropods as prey or for their functional roles, including pollination, seed dispersal, and decomposition. Given their short generation times and ability to respond rapidly to ecological change, arthropods may be ideal targets for restoration and conservation activities.

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Section: Effects On Herbivoresmentioning

confidence: 99%

Section: Effects On Herbivoresmentioning

confidence: 99%

Effects of Invasive Plants on Arthropods

Litt

Cord

Fulbright

et al. 2014

Conservation Biology

153

148

View full text Add to dashboard Cite

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“…Further, it is a dispersive flier (Goldson et al, 1999 ), and is the most frequently found exotic species in tussock grassland (Barratt et al, 2007 ). It has been collected in Otago from remnant native shrubland (Derraik et al, 2001 ), tussock grasslands (Murray et al, 2003 ), and up to 1640 m on Coronet Peak, Otago. In New Zealand's predominantly ryegrass pastures the species can reach adult densities of 700 per m 2 ) (Barker and Addison, 1993 ) which is vastly higher than in the “vega” or “mallines” type valleys which Lloyd ( 1966 ) has suggested is its center-of-origin.…”

Section: Introductionmentioning

confidence: 99%

Is the Invasive Species Listronotus bonariensis (Kuschel) (Coleoptera: Curculionidae) (Argentine Stem Weevil) a Threat to New Zealand Natural Grassland Ecosystems?

et al. 2016

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Listronotus bonariensis (Argentine stem weevil) is a stem-boring weevil that has become a major pasture pest in New Zealand, and cool climate turf grass in Australia. This species is also frequently found in native tussock grassland in New Zealand. Laboratory and field trials were established to determine the risk posed to both seedlings and established plants of three native grass species compared to what happens with a common host of this species, hybrid ryegrass (L. perenne X L. multiflorum). Adult weevil feeding damage scores were higher on Poa colensoi and Festuca novae-zelandiae than Chionochloa rigida. Oviposition was lower on P. colensoi than hybrid ryegrass, and no eggs were laid on F. novae-zelandiae. In field trials using the same four species established as spaced plants L. bonariensis laid more eggs per tiller in ryegrass in a low altitude pasture site than in ryegrass in a higher altitude site. No eggs were found on the three native grass species at the tussock sites, and only low numbers were found on other grasses at the low altitude pasture site. Despite this, numbers of adult weevils were extracted from the plants in the field trials. These may have comprised survivors of the original weevils added to the plants, together with new generation weevils that had emerged during the experiment. Irrespective, higher numbers were recovered from the tussock site plants than from those from the pasture site. It was concluded that L. bonariensis is likely to have little overall impact, but a greater impact on native grass seedling survival than on established plants.

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“…In a previous assessment, accuracy of morphospecies separation was examined for Araneae, Coleoptera and Lepidoptera ( Derraik et al 2002 ). Several other groups were also collected during the same study project, and later identified by expert taxonomists ( Derraik et al 2001 ). Another speciose group in that investigation was the Hymenoptera ( Derraik et al 2001 ), one of the largest orders of insects, with 89 extant families and an estimated 300,000 species worldwide ( Goulet and Huber 1993 ).…”

Section: Introductionmentioning

confidence: 99%

“…Several other groups were also collected during the same study project, and later identified by expert taxonomists ( Derraik et al 2001 ). Another speciose group in that investigation was the Hymenoptera ( Derraik et al 2001 ), one of the largest orders of insects, with 89 extant families and an estimated 300,000 species worldwide ( Goulet and Huber 1993 ). The Hymenoptera has been suggested to be the most species-rich group in temperate regions ( Gaston 1991 ), and it is therefore of interest from a biodiversity perspective.…”

Section: Introductionmentioning

confidence: 99%

Morphospecies and Taxonomic Species Comparison for Hymenoptera

Derraik

Early²,

Closs

et al. 2010

Journal of Insect Science

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The use of morphospecies as surrogates for taxonomic species has been proposed as an alternative to overcome the identification difficulties associated with many invertebrate studies, such as biodiversity surveys. Hymenoptera specimens were collected by beating and pitfall traps, and were separated into morphospecies by a non-specialist with no prior training, and later identified by an expert taxonomist. The number of Hymenoptera morphospecies and taxonomic species was 37 and 42, respectively, representing an underestimation error of 12%. Different families presented varying levels of difficulty, and although the species estimation provided by the use of morphospecies initially appeared to have a relatively minor error rate, this was actually an artefact. Splitting and lumping errors balanced each other out, wrongly suggesting that morphospecies were reasonable surrogates for taxonomic species in the Hymenoptera. The use of morphospecies should be adopted only for selected target groups, which have been assessed as reliable surrogates for taxonomic species beforehand, and some prior training to the non-specialist is likely to be of primary importance.

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Invertebrate survey of a modified native shrubland, Brookdale Covenant, Rock and Pillar Range, Otago, New Zealand

Abstract: This is the first published invertebrate survey focusing on a low-altitude shrubland community in New Zealand. Invertebrates were collected from a remnant native shrubland (450 m

Cited by 17 publications

References 32 publications

Effects of Invasive Plants on Arthropods

Effects of Invasive Plants on Arthropods

Is the Invasive Species Listronotus bonariensis (Kuschel) (Coleoptera: Curculionidae) (Argentine Stem Weevil) a Threat to New Zealand Natural Grassland Ecosystems?

Morphospecies and Taxonomic Species Comparison for Hymenoptera

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