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Polar lakes may act as ecological islands to aquatic protists.

A fundamental question in ecology is whether microorganisms follow the same patterns as multicellular organisms when it comes to population structure and levels of genetic diversity. Enormous population sizes, predominately asexual reproduction and presumably high dispersal because of small body size could have profound implications on their genetic diversity and population structure. Here, we hav

Effects of landscape composition and configuration on pollination in a native herb: a field experiment.

Bumble bee abundance in agricultural landscapes is known to decrease with increasing distance from seminatural grasslands, but whether the pollination of bumble-bee-pollinated wild plants shows a similar pattern is less well known. In addition, the relative effects of landscape composition (landscape heterogeneity) and landscape configuration (distance from seminatural grassland) on wild plant pol

Local and landscape-level floral resources explain effects of wildflower strips on wild bees across four European countries

Growing evidence for declines in wild bees calls for the development and implementation of effective mitigation measures. Enhancing floral resources is a widely accepted measure for promoting bees in agricultural landscapes, but effectiveness varies considerably between landscapes and regions. We hypothesize that this variation is mainly driven by a combination of the direct effects of measures on

Complexation and precipitation reactions in the ternary As(V)-Fe(III)-OM (organic matter) system

The predominant forms of arsenic (As) in anoxic and oxic environments are As(III) and As(V), respectively, and the fate of these forms is influenced by interactions with mineral surfaces and organic matter (OM). Interactions between As(V) and OM are believed to occur mainly via iron(Fe)-bridges in ternary Fe-arsenate complexes, but direct evidence for these interactions are scarce. Furthermore, si

Speciation of aluminum in soils and stream waters: The importance of organic matter

Aluminum (Al) is the most common metal in the Earth's crust, and exists mainly in the form of silicates, oxides and hydroxides, or in complexes with natural organic matter (NOM) or inorganic ligands. Since speciation is a key factor for understanding the environmental impact of Al, it is important to determine the chemical forms of Al that predominate in different natural media and under varying g

Involutin is a Fe3+ reductant Secreted by the Ectomycorrhizal Fungus Paxillus involutus during Fenton-based Decomposition of Organic Matter.

Ectomycorrhizal fungi play a key role in mobilizing nutrients embedded in recalcitrant organic matter complexes, thereby increasing nutrient accessibility to the host plant. Recent study have shown that during assimilation of nutrients, the ectomycorrhizal fungus Paxillus involutus decomposes organic matter using an oxidative mechanism involving Fenton chemistry (Fe(2+) + H2O2 + H(+) → Fe(3+) + •O

Bushmeat hunting changes regeneration of African rainforests.

To assess ecological consequences of bushmeat hunting in African lowland rainforests, we compared paired sites, with high and low hunting pressure, in three areas of southeastern Nigeria. In hunted sites, populations of important seed dispersers-both small and large primates (including the Cross River gorilla, Gorilla gorilla diehli)-were drastically reduced. Large rodents were more abundant in hu

Optimizing agri-environment schemes for biodiversity, ecosystem services or both?

Agri-environment schemes (AES) have been introduced to mitigate negative environmental effects caused by increased agricultural intensification in Europe. However, there is still debate on whether currently available incentives are efficiently enhancing farmland biodiversity. Moreover, agri-environment schemes often lead to a yield reduction, which has been argued to potentially increase pressure

Winners and losers of organic cereal farming in animal communities across Central and Northern Europe

Organic farming is promoted as a sustainable alternative to conventional farming, with positive effects on the diversity of plants and selected animal taxa. Here, we used a literature survey to collect presence/absence data on the composition of farmland bird, ground beetle, spider as well as butterfly and moth communities from 28 independent studies to identify genera and (sub-)families that had

The Role Assigned to Artificial Intelligence in Global Sustainability Governance

There exists a knowledge gap in the literature on how international actors address artificial intelligence (AI) in international sustainability governance. By addressing this gap and bringing a critical perspective, this paper aims to enrich discussions on AI within international relations. First, this paper shows that the development and deployment of AI-based technologies are mainly seen as an o

How do root exudates prime the decomposition of soil organic matter following drought?

When dry soil is rewetted, contrasting microbial responses can be induced, ranging from a more resilient type of response with faster growth recovery to a more sensitive type of response with a slower growth recovery. These microbial responses will also affect soil carbon (C) cycling in the rhizosphere. However, whether the microbially-controlled priming of soil organic matter (SOM) mineralization

Global patterns and determinants of erosion-induced soil carbon translocation

Soil erosion is a critical process influencing the global carbon cycle. However, erosion-induced carbon changes remain inadequately understood, particularly for soil inorganic carbon (SIC). There is also limited knowledge about the factors influencing soil carbon dynamics during erosion processes. Here we quantify the global translocation of soil organic carbon (SOC) and SIC due to soil erosion us

Essential Concepts for Implementing the Sustainable Development Goals : An A-Z Guide

This book provides a highly accessible and user-friendly overview of the essential concepts and terms related to the current global endeavour to implement the Sustainable Development Goals.With the first decade of the 15-year timespan of the 2030 Agenda now past, the SDGs show limited progress and several goals are even regressing. It is imperative that SDG implementation is accelerated until 2030

Drought as a disturbance : Soil microbial resistance and resilience across environmental gradients

The ecosystem response to disturbances is a central topic in ecology, and there is growing awareness of the impacts of human-driven climate change on ecosystem stability to disturbances. Terrestrial ecosystems are increasingly exposed to more drought and rainfall events as climate change intensifies. In soils, bacteria and fungi play a key role in ecosystem functioning, yet their responses to drou

Meta-analysis reveals that pollinator functional diversity and abundance enhance crop pollination and yield

How insects promote crop pollination remains poorly understood in terms of the contribution of functional trait differences between species. We used meta-analyses to test for correlations between community abundance, species richness and functional trait metrics with oilseed rape yield, a globally important crop. While overall abundance is consistently important in predicting yield, functional div

The Process of Europeanization A Study of the European Effects on Polish Domestic Structures

The countries of the European Union are in an ongoing phase of integration. The influences on individual states domestic structures are unquestionable and the governing prerequisites have changed significantly. Poland, a relatively new member state is in the middle of the process and so this study analyses the effects of Europeanization on polishes domestic structures. The study examines four pub-

The role of phosphorus, magnesium and potassium availability in soil fungal exploration of mineral nutrient sources in Norway spruce forests

We investigated fungal growth and community composition in buried meshbags, amended with apatite, biotite or hornblende, in Norway spruce (Picea abies) forests of varying nutrient status. Norway spruce needles and soil collected from forests overlying serpentinite had low levels of potassium and phosphorus, those from granite had low levels of magnesium, whereas those from amphibolite had comparab

Butterfly monitoring using systematically placed transects in contrasting climatic regions - Exploring an established spatial design for sampling

Butterfly monitoring schemes are recording programs initiated to monitor nationwide butterfly abundance and distribution patterns, often with help from volunteers. The method generates high-resolution data, but may be associated with a degree of habitat sampling bias if volunteers prefer to survey areas perceived to be high-quality butterfly habitats. This can result in habitats becoming underrepr

Climate regulation, energy provisioning and water purification : Quantifying ecosystem service delivery of bioenergy willow grown on riparian buffer zones using life cycle assessment

Whilst life cycle assessment (LCA) boundaries are expanded to account for negative indirect consequences of bioenergy such as indirect land use change (ILUC), ecosystem services such as water purification sometimes delivered by perennial bioenergy crops are typically neglected in LCA studies. Consequential LCA was applied to evaluate the significance of nutrient interception and retention on the e