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Carbon sequestration and community composition of ectomycorrhizal fungi across a geothermal warming gradient in an Icelandic spruce forest

Soil warming (0–5.5 °C above controls) effects on ectomycorrhizal growth, carbon sequestration and community composition were examined in a Picea sitchensis forest spanning a geothermal gradient in Iceland. Fungal communities were assayed with sand-filled ingrowth meshbags incubated in the soil for 5 months. Meshbags amended with compost made from maize leaves (a C4 plant enriched in 13C) were inc

Organic farming supports spatiotemporal stability in species richness of bumblebees and butterflies

The spatiotemporal stability of wild organisms, such as flower-visiting insects, is critical to guarantee high levels of biodiversity in agroecosystems. Whereas the proportion of semi-natural habitats in the landscapes has been shown to stabilize the species richness of flower visitors, the effect of farming intensity has not yet been studied. In this study, we compared the temporal and spatial st

Altered winter conditions impair plant development and yield in oilseed rape

The demand for agricultural products is expected to increase as a result of population growth, changed diets and demands for bioenergy. At the same time, agricultural yields in many regions are expected to be negatively impacted by climate change. Here we show, how altered winter conditions in combination with an extreme weather event impact reproductive development and yield of oilseed rape (Bras

Fungal extracellular polymeric substance matrices – Highly specialized microenvironments that allow fungi to control soil organic matter decomposition reactions

Filamentous fungi play a key role in the terrestrial carbon cycle as they are the primary decomposers of lignocellulose in soil organic matter (SOM). Fungi secrete a wide range of oxidative and hydrolytic enzymes, and generate radicals through extracellular secondary metabolites to decompose SOM. To study fungal decomposition of SOM, the activities of isolated enzymes are typically studied as prox

Host-plant availability drives the spatiotemporal dynamics of interacting metapopulations across a fragmented landscape

The dynamics of ecological communities depend partly on species interactions within and among trophic levels. Experimental work has demonstrated the impact of species interactions on the species involved, but it remains unclear whether these effects can also be detected in long-term time series across heterogeneous landscapes. We analyzed a 19-year time series of patch occupancy by the Glanville f

Educating the next generation decision makers - the multi-disciplinary classroom as a platform for developing communication skills needed for future progress of adaptation measures

The scientific knowledge of climate change processes and their worrying future implications for human societies and natural systems has developed considerably during the last decade, but necessary adaptive actions by decision makers have so far been rather limited. There are several causes to this, such as a discrepancy related to the communication between climate scientists and end-users, and the

Mineral surface-reactive metabolites secreted during fungal decomposition contribute to the formation of soil organic matter

Soil organic matter (SOM) constitutes the largest terrestrial C pool. An emerging, untested, view is that oxidation and depolymerization of SOM by microorganisms promote the formation of SOM-mineral associations that is critical for SOM stabilization. To test this hypothesis, we performed laboratory-scale experiments involving one ectomycorrhizal and one saprotrophic fungus that represent the two

Methane and carbon dioxide fluxes over a lake : Comparison between eddy covariance, floating chambers and boundary layer method

Freshwaters bring a notable contribution to the global carbon budget by emitting both carbon dioxide (CO2) and methane (CH4) to the atmosphere. Global estimates of freshwater emissions traditionally use a wind-speed-based gas transfer velocity, kCC (introduced by Cole and Caraco, 1998), for calculating diffusive flux with the boundary layer method (BLM). We compared CH4 and CO2 fluxes from BLM wit

Environmental and climate policy integration: Targeted strategies for overcoming barriers to nature-based solutions and climate change adaptation

Nature-based adaptation planning is a challenging endeavor, not least because it requires transdisciplinary approaches to unite different actors' efforts and capacities. However, empirical knowledge on associated governance processes is scarce and fragmented. Against this background, this paper examines the integration of nature-based approaches for climate change adaptation into municipalities’ d

Drills and Diets, Consumption and Conservation– the Role of Primate Meat in Local Diets in and Around Cross River National Park, Nigeria

The study uses household level data from four villages inand around Cross River National Park (CRNP), Nigeria to assess therole of primate meat in local livelihoods and diets. Okwangwo is anenclave community within the national park, Butatong houses theCRNP headquarters. Kanyang1 and Abo Ebam are located fartheraway from the park. 149 respondents were surveyed. Sale ofbushmeat contributed 4 percen

Primary producers or consumers? Increasing phytoplankton bacterivory along a gradient of lake warming and browning

Eukaryotic phytoplankton form the basis of aquatic food webs and play a key role in the global carbon cycle. Many of these evolutionarily diverse microalgae are also capable of feeding on other microbes, and hence simultaneously act both as primary producers and consumers. The net ecosystem impact of such mixotrophs depends on their nutritional strategy which is likely to alter with environmental

Diet and ambient temperature interact to shape plasma fatty acid composition, basal metabolic rate and oxidative stress in great tits

Diet and ambient temperature affect animal physiology, survival and reproductive success. However, knowledge of how these environmental factors interact to shape physiological processes and life-history traits of birds and other animals is largely lacking. By exposing adult great tits (Parus major) to two contrasting diets (saturated or unsaturated fatty acids; SFAs and UFAs, respectively) and amb

Field-level clothianidin exposure affects bumblebees but generally not their pathogens

Neonicotinoids are implicated in bee declines and laboratory studies imply that they impair the bee immune system, thereby precipitating a rise in pathogen levels. To establish whether such synergisms reduce bee performance in real-world agricultural landscapes, we analysed the microbial composition of the bumblebee (Bombus terrestris) samples from our recent landscape study on the impacts of fiel

High land-use intensity in grasslands constrains wild bee species richness in Europe

There is widespread concern regarding declines in bee populations given their importance for the functioning of both natural and managed ecosystems. An increasing number of studies find negative relations between bee species richness and simplification of agricultural landscapes, but the role of land-use intensity and its relative importance compared to landscape simplification remain less clear.

Exposed : Living with scandal, rumour, and gossip

This book illuminates the personal experience of being at the centre of a media scandal. It contributes new perspectives to the field, where both moral and media transgressions are exposed. By using ethnological and phenomenological perspectives upon an extensive empirical material, from a Swedish context, the existential level of this phenomenon can be highlighted. How does such an experience aff

What measures should be taken to improve conditions for Swedish Farmland Birds, as reflected in the Farmland Bird Index?

Many birds species connected to the agricultural landscape have for several decades fared poorly in Sweden, as well as in Europe as a whole. This is reflected in the decline of the Farmland Bird Index, an official EU indicator for farmland birds specifically, and biodiversity in general. The Swedish Board of Agriculture invited us to propose measures that will improve the conditions for farmland b

Nature’s services at risk in a changing climate

Climate change is increasingly posing a threat to biodiversity, both through its direct effects on organisms and through indirect effects resulting from changes in land use. Preserving biodiversity is an ethical obligation, but it is also increasingly being realised that biodiversity contributes to ecosystem services, i.e. ecosystem processes important for human needs and prosperity. In order to a