Impacts on invertebrate fungivores: a predictable consequence of ground-cover weed invasion?

Bassett, Imogen E.

doi:10.1007/s10531-014-0634-5

Cited by 8 publications

(7 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Entomopathogenic fungi were detected in 22 spiders in ginger sites while only found in 1 spider from native forest. This result is consistent with previous work in New Zealand which has shown that fungivores are much more abundant in sites that have been invaded by ginger (Bassett 2014). The entomopathogenic fungiGibellula, the most common spider fungal pathogen (Shresthaet al 2019), was detected in only one spider in native forest.Beauveria was the most commonly detected fungi in spiders from ginger-invaded sites, followed by Ophiocordyceps , a known parasite of beetle larvae (Wang et al 2021).…”

Section: Spiders Are Present In Similar Abundances Across Habitat Typessupporting

confidence: 92%

“…Compositional differences between native forest and ginger-invaded sites have been noted using invertebrate communities in New Zealand, though the impact was context dependent (Yeates & Williams 2001). Changes in the abundance of fungivores and decomposers is the most consistent result of the invasion (Bassett 2014). The evidence of compositional shifts caused by ginger most certainly causes differences in the interactions between native and non-native taxa.…”

Section: Introductionmentioning

confidence: 95%

See 1 more Smart Citation

Assessing source-sink dynamics in invaded habitat using dietary metabarcoding

Holmquist

Adams

Gillespie

2022

Preprint

View full text Add to dashboard Cite

Earth systems are nearing a global tipping point, beyond which the dynamics of biological systems will become unstable. One major driver of instability is species invasion, especially by organisms that act as “ecosystem engineers” through their modification of abiotic and biotic factors. In a mosaic landscape of non-invaded and invaded habitat, ecosystems modified through invasion may serve as “sink” habitat. To understand how native organisms respond to habitat that is becoming increasingly modified, it is essential to examine biological communities within invaded and non-invaded habitat, identifying compositional shifts between native and non-native taxa as well as measuring how modification has affected interactions among community members. Using dietary metabarcoding, our study examines the response of a native Hawaiian generalist predator to habitat modification by comparing biotic interactions across metapopulations of spiders collected in native forest and sites invaded by kahili ginger. Our study shows that, although there are shared components of the dietary community, spiders in invaded habitat are eating a less consistent and more diverse diet consisting of more non-native arthropods which are rarely or entirely undetected in spiders collected from native forest. Additionally, the frequency of novel interactions with parasites was significantly higher in invaded sites, reflected by the frequency and diversity of non-native Hymenoptera parasites and entomopathogenic fungi. The study highlights the role of habitat modification driven by an invasive plant in altering community structure and biotic interactions, appearing to serve as a “sink” for native arthropods and thereby threatening the stability of the ecosystem.

show abstract

Section: Spiders Are Present In Similar Abundances Across Habitat Typessupporting

confidence: 92%

Section: Introductionmentioning

confidence: 95%

Assessing source-sink dynamics in invaded habitat using dietary metabarcoding

Holmquist

Adams

Gillespie

2022

Preprint

View full text Add to dashboard Cite

show abstract

“…The effect was due to the high input of highly acidic Reynoutria litter, which lowered soil pH and moisture. There are also several other invasive plants with similar impacts on primary consumers in the brown food web of woodland ecosystems (Bassett ; McCary et al . ; Motard et al .…”

Section: Discussionmentioning

confidence: 99%

Invasive plants have different effects on trophic structure of green and brown food webs in terrestrial ecosystems: a meta‐analysis

et al. 2016

View full text Add to dashboard Cite

Although invasive plants are a major source of terrestrial ecosystem degradation worldwide, it remains unclear which trophic levels above the base of the food web are most vulnerable to plant invasions. We performed a meta-analysis of 38 independent studies from 32 papers to examine how invasive plants alter major groupings of primary and secondary consumers in three globally distributed ecosystems: wetlands, woodlands and grasslands. Within each ecosystem we examined if green (grazing) food webs are more sensitive to plant invasions compared to brown (detrital) food webs. Invasive plants have strong negative effects on primary consumers (detritivores, bacterivores, fungivores, and/or herbivores) in woodlands and wetlands, which become less abundant in both green and brown food webs in woodlands and green webs in wetlands. Plant invasions increased abundances of secondary consumers (predators and/or parasitoids) only in woodland brown food webs and green webs in wetlands. Effects of invasive plants on grazing and detrital food webs clearly differed between ecosystems. Overall, invasive plants had the most pronounced effects on the trophic structure of wetlands and woodlands, but caused no detectable changes to grassland trophic structure.

show abstract

“…This is an example of how different invasive plants can provide different resources. Here, decaying vegetation under broom is creating optimal habitats for detritivores and fungivores [30,31].…”

Section: Discussionmentioning

confidence: 99%

Effects of Two Invasive Weeds on Arthropod Community Structure on the Central Plateau of New Zealand

Effah

Barrett

Peterson

et al. 2020

Plants

View full text Add to dashboard Cite

Heather (Calluna vulgaris) and broom (Cytisus scoparius), originally from Europe, are the main invasive plants on New Zealand’s North Island Central Plateau, where they threaten native flora and fauna. Given the strong link between arthropod communities and plants, we explored the impact of these invasive weeds on the diversity and composition of associated arthropod assemblages in this area. The arthropods in heather-invaded areas, broom-invaded areas, and areas dominated by the native species mānuka (Leptospermum scoparium) and Dracohyllum (Dracophyllum subulatum) were collected and identified to order. During summer and autumn, arthropods were collected using beating trays, flight intercept traps and pitfall traps. Diversity indices (Richness, Shannon’s index and Simpson’s index) were calculated at the order level, and permutational multivariate analysis (PERMANOVA) was used to explore differences in order-level community composition. Our results show a significant variation in community composition for all trapping methods in both seasons, whereas invasive plants did not profoundly impact arthropod order richness. The presence of broom increased arthropod abundance, while heather was linked to a reduction. Under all possible plant pairings between heather, broom, mānuka, and Dracophylum, the impact of neighbouring plant identity on arthropod community composition was further explored for the samples collected using beating trays. The results suggest that during plant invasion, arthropod communities are affected by neighbouring plant identity and that impacts vary between arthropod sampling methods and seasons.

show abstract

Impacts on invertebrate fungivores: a predictable consequence of ground-cover weed invasion?

Cited by 8 publications

References 35 publications

Assessing source-sink dynamics in invaded habitat using dietary metabarcoding

Assessing source-sink dynamics in invaded habitat using dietary metabarcoding

Invasive plants have different effects on trophic structure of green and brown food webs in terrestrial ecosystems: a meta‐analysis

Effects of Two Invasive Weeds on Arthropod Community Structure on the Central Plateau of New Zealand

Contact Info

Product

Resources

About