12 Result(s)
within
Uffe N. Nielsen
Life Sciences
English
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Article
Grazing induces positive direct effect of shrubs on nematode diversity but suppresses indirect effects through microbial pathways
Dominant plants shape belowground communities, which in turn influences ecosystem functioning. Similarly, herbivores affect belowground communities through physical disturbance and redistribution of organic in...
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Article
Open AccessSevere Prolonged Drought Favours Stress-Tolerant Microbes in Australian Drylands
Drylands comprise one-third of Earth’s terrestrial surface area and support over two billion people. Most drylands are projected to experience altered rainfall regimes, including changes in total amounts and f...
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Article
Open AccessEffect of temperature on survival of Australian entomopathogenic nematodes and their virulence against the Queensland fruit fly, Bactrocera tryoni
Entomopathogenic nematodes (EPNs) are commonly used biocontrol agents of insect pests, with a wide range of commercially available isolates targeting specific pests. New isolates are, however, required to impr...
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Article
Isolation and molecular characterization of five entomopathogenic nematode species and their bacterial symbionts from eastern Australia
Entomopathogenic nematodes (EPNs) are used in biological control of pest insects but their potential may be limited by strain availability from different bioregions and effectiveness against specific pests. He...
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Article
Drought and phosphorus affect productivity of a mesic grassland via shifts in root traits of dominant species
Precipitation and soil nutrients play an important role in regulating grassland productivity. However, little is known regarding the sensitivity of grasslands to changes in water and nutrient availability and ...
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Article
Open AccessNematodes in a polar desert reveal the relative role of biotic interactions in the coexistence of soil animals
Abiotic factors are major determinants of soil animal distributions and their dominant role is pronounced in extreme ecosystems, with biotic interactions seemingly playing a minor role. We modelled co-occurren...
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Article
Open AccessBiotic interactions are an unexpected yet critical control on the complexity of an abiotically driven polar ecosystem
Abiotic and biotic factors control ecosystem biodiversity, but their relative contributions remain unclear. The ultraoligotrophic ecosystem of the Antarctic Dry Valleys, a simple yet highly heterogeneous ecosy...
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Article
Abundance and diversity of soil invertebrates in the Windmill Islands region, East Antarctica
The harsh climate and patchy distribution of habitable terrestrial ecosystems constrain soil invertebrate communities in continental Antarctica. The Windmill Islands in East Antarctica have a relatively gentle...
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Article
Impacts of eucalypt plantation management on soil faunal communities and nutrient bioavailability: trading function for dependence?
Short-rotation forestry systems provide a range of ecosystem goods and services, yet the effects of intensive management on soil invertebrate community composition and ecosystem functioning are relatively unkn...
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Article
Response of belowground communities to short-term phosphorus addition in a phosphorus-limited woodland
Soil biota regulate essential ecosystem processes but our understanding of how soil fertility constrains biotic interactions remains limited. We investigated belowground responses to short-term phosphorus (P) ...
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Article
Foraging in the Dark – Chemically Mediated Host Plant Location by Belowground Insect Herbivores
Root-feeding insects are key components in many terrestrial ecosystems. Like shoot-feeding insect herbivores, they exploit a range of chemical cues to locate host plants. Respiratory emissions of carbon dioxid...
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Article
Antarctic nematode communities: observed and predicted responses to climate change
The rapidly changing climate in Antarctica is impacting the ecosystems. Since records began, climate changes have varied considerably throughout Antarctica with both positive and negative trends in temperature...
