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Limiting resources for soil microbial growth in climate change simulation treatments in the Subarctic
The microbial use of resources to sustain life and reproduce influences for example, decomposition and plant nutrient provisioning. The study of “limiting factors” has shed light on the interaction between plants and their environment. Here, we investigated whether carbon (C), nitrogen (N), or phosphorus (P) was limiting for soil microorganisms in a subarctic tundra heath, and how changes in resou
Ecosystems and Reuse of Building Materials: An Exploratory Study
The implementation of circular economy strategies, such as the reuse of building materials, represents a valid opportunity for the building and construction sector to diminish the consumption of raw materials and generate revenues and, thus, to contribute to the Sustainable Development Goals 11 and 12. However, the reuse of building materials is still limited. Previous studies suggest that one rea
Four governance reforms to strengthen the SDGs : A demanding policy vision can accelerate global sustainable development efforts
In 2015, the United Nations (UN) General Assembly agreed on 17 Sustainable Development Goals (SDGs) with 169 targets as part of the 2030 Agenda for Sustainable Development. Although the SDGs, which are to be achieved by 2030, are not the first attempt to guide policy actors through global goals, they go far beyond earlier agreements in their detail, comprehensiveness, and ambition. Yet the 2022 SD
Introduction – Nature-Based Solutions for Coastal Protection
Holocene Hydrographic Variations From the Baltic-North Sea Transitional Area (IODP Site M0059)
Deoxygenation affects many continental shelf seas across the world today and results in increasing areas of hypoxia (dissolved oxygen concentration ([O2]) <1.4 ml/L). The Baltic Sea is increasingly affected by deoxygenation. Deoxygenation correlates with other environmental variables such as changing water temperature and salinity and is directly linked to ongoing global climate change. To place t
Nitrogen acquisition from mineral-associated proteins by an ectomycorrhizal fungus
In nitrogen (N)-limited boreal forests, trees depend on the decomposing activity of their ectomycorrhizal (ECM) fungal symbionts to access soil N. A large fraction of this N exists as proteinaceous compounds associated with mineral particles. However, it is not known if ECM fungi can access these mineral-associated proteins; accordingly, possible acquisition mechanisms have not been investigated.
Global biogeography of fungal and bacterial biomass carbon in topsoil
Bacteria and fungi, representing two major soil microorganism groups, play an important role in global nutrient biogeochemistry. Biogeographic patterns of bacterial and fungal biomass are of fundamental importance for mechanistically understanding nutrient cycling. We synthesized 1323 data points of phospholipid fatty acid-derived fungal biomass C (FBC), bacterial biomass C (BBC), and fungi:bacter
Deuterium-Enhanced Raman Spectroscopy for Histidine pKa Determination in a pH-Responsive Hydrogel
We report here a method for the determination of the pKa of histidine in complex or heterogeneous systems amenable to neither solid-state nor solution NMR spectroscopy. Careful synthesis of a fluorenylmethyloxycarbonyl- and trityl-protected, C2-deuterated histidine produces a vibrational-probe-equipped amino acid that can readily be incorporated into any peptide accessible by standard solid-phase
Nature unsettled: How knowledge and power shape ‘nature-based’ approaches to societal challenges
Nature-based solutions (NbS) are gaining traction in high-level, decision-making arenas as a response to global policy challenges. Claiming to be transformative and pluralistic, NbS aim to resolve societal problems through a focus on nature, which is understood to be a benign ally. This uncritical framing of nature may have unintended and inequitable consequences that undermine the emancipatory po
Simulated rhizosphere deposits induce microbial N-mining that may accelerate shrubification in the subarctic
Climate change is exposing high-latitude systems to warming and a shift towards more shrub-dominated plant communities, resulting in increased leaf-litter inputs at the soil surface, and more labile root-derived organic matter (OM) input in the soil profile. Labile OM can stimulate the mineralization of soil organic matter (SOM); a phenomenon termed “priming.” In N-poor subarctic soils, it is hypo
Uncovering the hidden diversity of litter-decomposition mechanisms in mushroom-forming fungi
Litter decomposing Agaricales play key role in terrestrial carbon cycling, but little is known about their decomposition mechanisms. We assembled datasets of 42 gene families involved in plant-cell-wall decomposition from seven newly sequenced litter decomposers and 35 other Agaricomycotina members, mostly white-rot and brown-rot species. Using sequence similarity and phylogenetics, we split the f
Assessing Nature’s Contributions to People
Do the misty mountains, fast-flowing rivers, and sandy beaches leave you in awe and fill you with insatiable wonder? Does nature bring you a jubilant feeling? Nature contributes to our quality of life in multiple ways. Some of these gifts are easily visible, like the clothes you wear, the food you eat, and the water your drink. However, some contributions, such as flood protection and pollination
How much meat can we eat to sustain a healthy life and planet? The case of Swedish meat consumption
Sustainability of Swedish meat consumption is assessed from the perspectives of nutrition, health, climate and land use. Our results suggest that more sustainable food systems can be achieved via changes in Swedish meat consumption and that our multidimensional approach can be useful in identifying such changes.
The Swedish carbon tax: A resilient success
The Swedish carbon tax of 1991, one of the first of its kind, has positioned Sweden as a forerunner in climate governance. It is often depicted an international success and today constitutes the backbone of Swedish climate policy. At first, however, the tax received widespread criticism and had limited political support. The policy design process was short, with limited time for deliberation. Whil
Conflicting interests and sustainable land use – the forest case
Isothiazolinone inhibition of soil microbial activity persists despite biocide dissipation
Soil microbial growth and activity are generally assumed to recover rapidly after dissipation of organic toxicants. We studied the effects of four readily degradable isothiazolinone biocides (benzisothiazolinone, BIT; methylisothiazolinone, MIT; octylisothiazolinone, OIT; 4,5-dichloro-2-octyl-isothiazolinone, DCOIT) on bacterial growth, fungal growth, basal respiration, and substrate-induced respi
Terrestrial support of zooplankton biomass in northern rivers
The contribution of terrestrially derived carbon to micro-crustacean zooplankton biomass (i.e., allochthony) has been previously studied in lakes, reservoirs, and estuaries, but little is known about zooplankton allochthony in rivers. In lacustrine environments, allochthony is regulated by distinct selective feeding behavior of different taxa. However, we hypothesized that restricted possibility f
Invasive plant-derived dissolved organic matter alters microbial communities and carbon cycling in soils
Plant invaders often exhibit substantially higher productivity than the communities they replace. However, little is known about interactions among invaders and microbial decomposers responsible for converting organic nutrients into plant-available forms to fuel this productivity. We performed two laboratory incubations with soil and plant material collected from five-year-old experimental plantin
Conventional agriculture and not drought alters relationships between soil biota and functions
Soil biodiversity constitutes the biological pillars of ecosystem services provided by soils worldwide. Soil life is threatened by intense agricultural management and shifts in climatic conditions as two important global change drivers which are not often jointly studied under field conditions. We addressed the effects of experimental short-term drought over the wheat growing season on soil organi
