19 Result(s)
within
Uffe N. Nielsen
English
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Article
Open AccessPopulation growth of two limno-terrestrial Antarctic microinvertebrates in different aqueous soil media
Terrestrial microinvertebrates provide important carbon and nutrient cycling roles in soil environments, particularly in Antarctica where larger macroinvertebrates are absent. The environmental preferences and...
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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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Open AccessGlobal fine-resolution data on springtail abundance and community structure
Springtails (Collembola) inhabit soils from the Arctic to the Antarctic and comprise an estimated ~32% of all terrestrial arthropods on Earth. Here, we present a global, spatially-explicit database on springta...
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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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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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Open AccessClimate change-driven shifts in plant–soil feedbacks: a meta-analysis
Climate change is expected to affect plant–soil feedbacks (PSFs, i.e., the effects of a plant on the growth of another plant or community grown in the same soil via changes in soil abiotic and biotic propertie...
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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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The fate of carbon in a mature forest under carbon dioxide enrichment
Atmospheric carbon dioxide enrichment (eCO2) can enhance plant carbon uptake and growth1–5, thereby providing an important negative feedback to climate change by slowing the rate of increase of the atmospheric CO
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Open AccessA global database of soil nematode abundance and functional group composition
As the most abundant animals on earth, nematodes are a dominant component of the soil community. They play critical roles in regulating biogeochemical cycles and vegetation dynamics within and across landscape...
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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
Soil nematode abundance and functional group composition at a global scale
Soil organisms are a crucial part of the terrestrial biosphere. Despite their importance for ecosystem functioning, few quantitative, spatially explicit models of the active belowground community currently exi...
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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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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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Soil biodiversity and human health
Soil biodiversity sustains human health and its loss can be mitigated by sustainable management.
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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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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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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...
