tag: carbon

Bacterial 16S diversity of basal ice, sediment, and the forefront of Svínafellsjökull glacier via isolation chips and classical culturing techniques

Sub-glacial microbes are receiving increased attention due to their central roles in storage and release of greenhouse gases, such as methane and CO2. Climate change driven warming and resulting glacier retreat exposes bedrock that can contribute to soil formation in which subglacial-released microorganisms may play a crucial role. Basal ice, …

Pastoralism and soil quality in the Kalahari

Land use change in the rangelands of Botswana is affecting soil properties. Pastoralism is the only viable livelihood for many rural poor in Botswana, and privatization of communal land is reducing the area of grazing available to those without land tenure. This has elevated stocking densities in communal areas, increasing …

Environmental cost of fieldwork

Students and teachers alike are concerned for the environment, but the environmental cost of fieldwork is a seldom discussed and uncomfortable irony. Following a rare discussion on the subject with colleagues during a research field trip I decided to investigate to see if we can make more informed choices when planning and …

Educational value of fieldwork

Some of my school peers selected Geography A-level at least in part because of the fieldwork opportunities, and they selected university courses on the same criteria, seeking courses with the best holiday opportunities. What can be done to ensure that fieldwork is highly educational for all participants, including those lacking motivation to learn? I …

Niche partitioning of bacterial communities in biological crusts and soils under grasses, shrubs and trees in the Kalahari

The Kalahari of southern Africa is characterised by sparse vegetation interspersed with microbe-dominated biological soil crusts (BSC) which deliver a range of ecosystem services including soil stabilisation and carbon fixation. We characterised the bacterial communities of BSCs (0–1 cm depth) and the subsurface soil (1–2 cm depth) in an area typical of …