Volta

Using nematode traits to evaluate the effects of topography and grazing on the function of wet grassland soils

Understanding belowground impacts of livestock in rangelands is critical to developing sustainable grazing practices. This is particularly the case in wet grasslands, which face increased pressures in the timing and intensity of grazing in a changing climate. To understand the coupled effects of topography and grazing on wet grassland soils, I examined the generic diversity, feeding composition, and traits of soil nematode communities. I collected nematodes from grazed and ungrazed upland prairies and wet meadows in southern and central Manitoba. Nematodes were extracted from fresh soil cores, counted, identified to the genus level, and assigned to feeding groups. I measured morphological, metabolic, and reproductive traits for a subset of dominant nematode genera and calculated community-weighted means and variances of five …

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