Sökresultat

Filtyp

Din sökning på "your password was exposed in a non google data breach 【Visit Sig8.com】9ZP42K8.6KfG" gav 66971 sökträffar

Collaboration or fragmentation? Biodiversity management through the common agricultural policy

We argue that the current system of agri-environment management in the European Common Agricultural Policy is ineffective at conserving biodiversity in part because it promotes fragmentation instead of collaboration of actors, thus hindering coordinated biodiversity management. Actor fragmentation is reinforced by the Common Agricultural Policy (CAP) in three ways: (1) through targeting individual

The contribution of successional grasslands to the conservation of semi-natural grasslands species – A landscape perspective

Many species that are typical of calcareous, semi-natural grasslands (“typical grassland species”) are declining in Europe as a result of habitat-loss and -fragmentation. Whereas populations of these species are expected to be largest in old semi-natural grasslands, these species may also occur in successional grasslands on previously arable fields. We used a space-for-time approach to analyse cha

The endangered São Tomé Grosbeak Neospiza concolor is the world's largest canary

The São Tomé Grosbeak Neospiza concolor, endemic to the island of São Tomé (Gulf of Guinea), is one of the least known birds in the world. Formerly considered to be an aberrant weaver (Ploceidae), it is currently placed in a monotypic genus within the true finches (Fringillidae). Phylogenetic inference based on mitochondrial and nuclear sequences confidently identifies N. concolor as an Old World

Integration of the ecosystem services concept in planning documents from six municipalities in southwestern Sweden

The ecosystem services (ES) concept refers to benefits that humanity receives from nature. Investigating how this concept has been embraced within urban planning is important when assessing the awareness of human dependence on natural functions and the potential for the ES concept to increase this awareness. We analyzed planning documents from three small and three large municipalities in southern

Similar alpha and beta diversity changes in tropical ant communities, comparing savannas and rainforests in Brazil and Indonesia

Local biodiversity can be expected to be similar worldwide if environmental conditions are similar. Here, we hypothesize that tropical ant communities with different types of regional species pools but at similar habitat types in Brazil and Indonesia show similar diversity patterns at multiple spatial scales, when comparing (1) the relative contribution of alpha and beta diversity to gamma diversi

Natural selection acts on floral traits associated with selfing rate among populations of Mixed-Mating collinsia heterophylla (Plantaginaceae)

Premise of research. A major aim in plant research is to understand the micro-and macroevolutionary processes generating the great diversity of mating systems and floral traits found in flowering plants. Using Collinsia heterophylla, a mixed-mating species in a genus with described variation in selfing rate and associated floral traits among species, we investigated (i) intraspecific selfing rate

Participatory Modelling for Sustainable Development : Key Issues derived from five cases of Natural Resource and Disaster Risk Management

Stakeholder participation is considered a key principle for sustainable development in the context of natural resource and disaster risk management. Participatory modelling (PM) is an interactive and iterative process in which stakeholder involvement is supported by modelling and communication tools. Planning and decision-making for sustainable development (SD)integrate three substantive dimension

Linking International Human Rights Law to Policy in Protecting against Adverse Effects of Climate Change

The article aims to illustrate the multifaceted interlink between climate change, heat, and human rights and discuss in what ways international human rights law may be used to support the development and implementation of policy at various levels to limit adverse effects of climate change on humans in general and right to health in particular. This is done by overviewing the possibilities and limi

Direct and cascading impacts of tropical land-use change on multi-trophic biodiversity

The conversion of tropical rainforest to agricultural systems such as oil palm alters biodiversity across a large range of interacting taxa and trophic levels. Yet, it remains unclear how direct and cascading effects of land-use change simultaneously drive ecological shifts. Combining data from a multi-taxon research initiative in Sumatra, Indonesia, we show that direct and cascading land-use effe

Separating effects of species identity and species richness on predation, pathogen dissemination and resistance to invasive species in tropical ant communities

Ants are abundant in natural and managed tropical ecosystems and can have an impact on herbivorous arthropods, as well as plant pathogens. Although it has been shown for plants that the diversity of communities can result in improved ecosystem functioning, it remains uncertain how the species richness of ants affects multiple ecosystem services and disservices. In the present study, we used experi

The role of ants, birds and bats for ecosystem functions and yield in oil palm plantations

One of the world's most important and rapidly expanding crops, oil palm, is associated with low levels of biodiversity. Changes in predator communities might alter ecosystem services and subsequently sustainable management but these links have received little attention to date. Here, for the first time, we manipulated ant and flying vertebrate (birds and bats) access to oil palms in six smallholde

How do selected crop rotations affect soil organic carbon in boreo-temperate systems? A systematic review protocol

Background: Soils are important global carbon pools that are under threat from intensive land use through a variety of agricultural practices. Sustainable management of agricultural soils may have the potential to mitigate climate change through increased carbon sequestration and increase their fertility. Among management practices to increase carbon sequestration, crop rotation designs have often

Equipped to cope with climate change : Traits associated with range filling across European taxa

In order to understand the ecological effects of climate change it is essential to forecast suitable areas for species in the future. However, species' ability to reach potentially suitable areas is also critical for species survival. These 'range-shift' abilities can be studied using life-history traits related to four range-shift stages: emigration, movement, establishment, and proliferation. He

Biogenic carbon dioxide as feedstock for production of chemicals and fuels : A techno-economic assessment with a European perspective

The use of fossil resources must be phased out during the next few decades in order to meet the adopted 2° target. The transition to non-fossil feedstocks in the production of chemicals and transportation fuels will make it increasingly important to economise on the biomass carbon since biomass is a limited resource. Carbon dioxide (CO2) can be used as carbon feedstock and thus serve as a valuable

Enhancing crop shelf life with pollination

Background: Globally, high amounts of food are wasted due to insufficient quality and decay. Although pollination has been shown to increase crop quality, a possible impact on shelf life has not been quantitatively studied. Results: We tested how shelf life, represented by fruit decay, firmness and weight, changes as a function of pollination limitation in two European, commercially important stra

Nitrogen deposition changes ectomycorrhizal communities in Swiss beech forests

Atmospheric pollution has implications for the health and diversity of temperate forests covering large parts of central Europe. Long-term elevated anthropogenic deposition of nitrogen (N) is driving forest ecosystems from the limitation by N to other nutrients and is found to affect tree health and ectomycorrhizal fungi (EMF), which most trees depend on for nutrient uptake. However, the consequen

Landscape-scale interactions of spatial and temporal cropland heterogeneity drive biological control of cereal aphids

Agricultural landscapes are characterised by dynamic crop mosaics changing in composition and configuration over space and time. Although semi-natural habitat has been often shown to contribute to pest biological control, the effects of increasing landscape heterogeneity with cropland have been disregarded. Here, we examine how cereal aphids, their enemies and biological control are affected by th

Does landscape complexity and semi-natural habitat structure affect diversity of flower-visiting insects in cucumber fields?

Presence of insects in agricultural habitat is affected by the surrounding circumstances such as the complexity and structure of landscape. Landscape structure is often formed as a consequence of the fragmentation of semi-natural habitat, which can negatively affect species richness and abundance of insects. This study was aimed to study the effect of complexity and structure of landscape on the d

How does tillage intensity affect soil organic carbon? A systematic review

Background: The loss of carbon (C) from agricultural soils has been, in part, attributed to tillage, a common practice providing a number of benefits to farmers. The promotion of less intensive tillage practices and no tillage (NT) (the absence of mechanical soil disturbance) aims to mitigate negative impacts on soil quality and to preserve soil organic carbon (SOC). Several reviews and meta-analy

The global biogeography of avian haemosporidian parasites is characterized by local diversification and intercontinental dispersal

The biogeographic histories of parasites and pathogens are infrequently compared with those of free-living species, including their hosts. Documenting the frequency with which parasites and pathogens disperse across geographic regions contributes to understanding not only their evolution, but also the likelihood that they may become emerging infectious diseases. Haemosporidian parasites of birds (