tag: soil

Bacterial and fungal representation and interactions in a former degraded upland peatland vegetation mosaic undergoing restoration

Peatlands are under threat from land management, anthropogenic pollution and climate change. These factors are implicated in severe degradation of ombrotrophic peatlands in the Southern Pennines of northern England. Significant areas of unconsolidated bare peat are both highly vulnerable to peat erosion and resistant to natural re-vegetation. Restoration efforts during …

Bacterial and fungal communities in a degraded ombrotrophic peatland undergoing natural and managed re-vegetation

The UK hosts 15-19% of global upland ombrotrophic (rain fed) peatlands that are estimated to store 3.2 billion tonnes of carbon and represent a critical upland habitat with regard to biodiversity and ecosystem services provision. Net production is dependent on an imbalance between growth of peat-forming Sphagnum mosses and microbial …

Microbial community composition of biological soil crusts and subsoil in the Kalahari

The Kalahari of southern Africa is characterised by sparse vegetation interspersed with biological soil crusts which deliver a range of ecosystem services including soil stabilisation and carbon fixation. The crusts vary in morphology from barely aggregated sand grains, to strongly aggregated thick crusts with dark pigmentation. Crust morphology and development …

Bio-physical competition for pore space and the micro-environment in BSC covered Kalahari Sand soils: Modelling soil thermal, hydraulic and gas efflux behaviour

Soil pore and particle matrices both facilitate and constrain soil-atmosphere exchange of heat, moisture and gas. Further, in soils covered by Biological Soil Crusts (BSCs), soil structure differs in the BSC (<1cm) and near surface layers. Soil-atmosphere gas exchange occurs primarily by diffusion, moisture flow by capillarity and hydrostatic pressure, …