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Agricultural management significantly affects insects, especially pollinators, which are crucial for crop pollination and biodiversity. In agricultural landscapes, various factors spanning different spatial scales are known to affect pollinator health, which, in turn, can influence pollination services. However, the importance of these factors in driving the health and performance of different pol
Converters of AC-DC nature are pivotal to supplying power in electronics, charging equipment, and renewable energy integration. A closed-loop Cuk converter with switched capacitor network and PID controller was proposed in this paper to mitigate the limitations of open circuit Cuk converter topology to ensure improved power factor from input along with low distortion in output, making it ideal for
Landscape-scale land use is important in driving species communities and interactions. However, despite increasing concerns regarding the ecological consequences of insect declines, our understanding of how the relative proportions of different land cover types influence insect herbivory in species-rich semi-natural habitats remains limited. This study assessed leaf, stem, and flower herbivory acr
Tackling biodiversity loss requires not only scaling up financial resources but also improving the governance of how such resources are mobilized, allocated, and accounted for. This paper reviews recent peer-reviewed literature (2019–2023) on biodiversity finance governance, focusing on three interrelated themes: financial instruments and mechanisms, governance structures, and critical and normati
Globally, freshwater ecosystems are threatened by multiple stressors, yet our knowledge of how they interact to affect food web structure remains scant. To address this knowledge gap, we conducted a large-scale mesocosm experiment to quantify the single and combined effects of three common anthropogenic stressors: warming, increased nutrient loading, and insecticide pollution, on the network struc
This study investigated the spatial dynamics of bark beetle infestations and their relationships with risk factors in south-eastern Swedish forests during the years 2018–2020, highlighting the importance of spatial heterogeneity of risk factors, particularly under climate change. First, global Random Forest (RF) models were developed to examine the relationships between bark beetle infestations an
BACKGROUND: Selective cerebral perfusion (SCP) is used for extending the period during which surgical procedures can be safely performed. We sought to determine the direct effects of pH management on cerebral microcirculation and metabolism during SCP. METHODS: An experimental SCP porcine model was created by selectively allowing cold perfusate only into the bicarotid brachiocephalic trunk during
Popular Abstract in English In this thesis we investigate the manipulation of the magnetic properties of molecular magnets by means of external electric fields. This manipulation is mediated by either the spin-electric coupling or the magnetic anisotropy of the molecular magnet. In order to understand what this means, let us first explain some basic concepts about magnetism. We will start explainiThis dissertation investigates theoretically electric control of the magnetic properties of molecular magnets. Two classes of magnetic molecules are considered. The first class consists of molecules that are spin frustrated. As a consequence of the frustration, the ground-state manifold of these molecules is characterized by states of different spin chirality, which can be coupled by an external e
Plant functional traits are fundamental to ecosystem dynamics and Earth system processes, but their global characterization is limited by available field surveys and trait measurements. Recent expansions in biodiversity data aggregation—including vegetation surveys, citizen science observations, and trait measurements—offer new opportunities to overcome these constraints. Here we demonstrate that
Groundwater-dependent vegetation (GDV) plays a vital role in maintaining biodiversity and ecosystem services in the Mediterranean biome but is increasingly threatened by climate and land use change. Large-scale GDV mapping in arid regions is critical for effective conservation and water resource management but remains challenging due to limited ground-truth data and the lack of high-resolution rem
The search for predictors of plant diversity has challenged scientists for decades. Here we identify intense photosynthetically active radiation (PAR) as a major factor constraining plant species richness in global grasslands. We show that the strength of the negative relationship between species richness and PAR increases with increasing elevation and that species richness is more strongly correl
Questions: How did α-, β- and γ- plant diversity of coastal dune slack plant communities change over 37 years during a period of significant changes in conservation management practices?. Location: Ainsdale Sand Dunes National Nature Reserve, England. Methods: We surveyed plant communities in dune slacks at Ainsdale Sand Dunes National Nature Reserve at two time points: in 1985 and in 2022. This p
The subfamily Stiriinae (Lepidoptera, Noctuidae) is a group of ∼160 described moth species, ∼91% of which occur in the Nearctic, with species diversity centered in the deserts, grasslands, and adjacent foothills of the mountain ranges of Mexico. We infer the first species-level phylogeny for the subfamily using 8 protein-coding genes. While some lineages are primarily leaf or flower feeders, the m
Loss of genetic diversity threatens species survival, yet its dynamics and impacts can vary widely across species depending on their evolutionary histories, life-history traits, and demographic trajectories. To investigate these differences, we analyzed the genomes of 3 species that experienced extreme and well-documented population bottlenecks, the Mauritius parakeet, the Mauritius kestrel, and t
Habitat area, forest characteristics, management practices and protected areas have the potential to profoundly impact biodiversity. This is particularly true for specialist species linked to structural complexity and old forest, like the lesser spotted woodpecker (Dryobates minor). This study examines how habitat quality and quantity influence the occurrence of this Near-Threatened species across
The inclusion of the knowledge and perspectives of Indigenous peoples and local communities (IPLC) in global sciencepolicy processes are increasingly being mandated. This is indicative of the recognition of their expertise and worldviews to inform social and ecological decisions. The IPBES Values Assessment (VA) explicitly highlighted the necessity for a nuanced engagement of different actors whil
Aim: To determine how species richness gradients—commonly considered universal—vary across the phylogenetic hierarchy of birds and mammals, and to uncover how clade age and size predetermine the gradients. Location: Global. Time Period: Last 120 million years. Taxa Studied: Birds and mammals (~15,000 species). Methods: We used large-scale phylogenies of birds and mammals and captured the species r
High-altitude regions are highly vulnerable to impacts of climate change because the retreat of glaciers and snow impacts ecosystems, local livelihoods, cultural practices, and values. Although glacier change is widely documented within the natural sciences, limited focus has been given to the lived experiences of emerging challenges in changing glacier environments. We used a mixed methods approa
