934 results match your criteria: "Institute of Ecology and Earth Sciences[Affiliation]"

Grasslands cover approximately a third of the Earth's land surface and account for about a third of terrestrial carbon storage. Yet, we lack strong predictive models of grassland plant biomass, the primary source of carbon in grasslands. This lack of predictive ability may arise from the assumption of linear relationships between plant biomass and the environment and an underestimation of interactions of environmental variables.

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Novel species of fungi described in this study include those from various countries as follows: , from accumulated snow sediment sample. , on leaf spots of . , on submerged decaying wood in sea water, on , as endophyte from healthy leaves of .

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Afforestation is increasingly recognized as a critical strategy to restore ecosystems and enhance biodiversity on post-agricultural landscapes. However, agricultural legacies, such as altered soil structure, nutrient imbalances, and depleted microbial diversity, can slow down forest establishment or cause ecosystems to deviate from expected successional trajectories. In this opinion paper, we explore the potential of soil inoculations as a tool to overcome these challenges by introducing beneficial microbial communities that can accelerate ecosystem recovery and forest development.

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Dual controls of vapour pressure deficit and soil moisture on photosynthesis in a restored temperate bog.

Sci Total Environ

January 2025

Institute of Ecology and Earth Sciences, University of Tartu, Vanemuise Street. 46, 51003 Tartu, Estonia. Electronic address:

Despite only covering ~3 % of the land mass, peatlands store more carbon (C) per unit area than any other ecosystem. This is due to the discrepancy between C fixed by the plants (Gross primary productivity (GPP)) and decomposition. However, this C is vulnerable to frequent, severe droughts and changes in the peatland microclimate.

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Survival and cause-specific mortality rates are vital for evidence-based population forecasting and conservation, particularly for large carnivores, whose populations are often vulnerable to human-caused mortalities. It is therefore important to know the relationship between anthropogenic and natural mortality causes to evaluate whether they are additive or compensatory. Further, the relation between survival and environmental covariates could reveal whether specific landscape characteristics influence demographic performance.

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Modification and deterioration of old-growth forests by industrial forestry have seriously threatened species diversity worldwide. The loss of natural habitats increases the concentration of circulating glucocorticoids and incurs chronic stress in animals, influencing the immune system, growth, survival, and lifespan of animals inhabiting such areas. In this study, we tested whether great tit () nestlings grown in old-growth unmanaged coniferous forests have longer telomeres than great tit nestlings developing in young managed coniferous forests.

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Assessment of nutrient storage and translocation in winter harvested Typha latifolia from free-water surface treatment wetland mitigating diffuse agricultural pollution.

Sci Total Environ

January 2025

Department of Geography, Institute of Ecology and Earth Sciences, University of Tartu, Tartu, Estonia; Department of Environmental Science, Policy and Management, University of California at Berkeley, USA.

Wetland macrophytes play a critical role in the performance of treatment wetlands (TWs), primarily through nutrient uptake. However, this retention is temporary, as nutrients are released back into the water upon the decomposition of plant litter. The removal of stored nutrients from TWs can be efficiently achieved by harvesting plants during the peak of the growing season, albeit with significant ecological disturbance.

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Metagenomic exploration and computational prediction of novel enzymes for polyethylene terephthalate degradation.

Ecotoxicol Environ Saf

January 2025

Laboratory of Complex Biological Systems and Bioinformatics (CBB), Department of Bioinformatics, Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, Iran. Electronic address:

As a global environmental challenge, plastic pollution raises serious ecological and health concerns owing to the excessive accumulation of plastic waste, which disrupts ecosystems, harms wildlife, and threatens human health. Polyethylene terephthalate (PET), one of the most commonly used plastics, has contributed significantly to this growing crisis. This study offers a solution for plastic pollution by identifying novel PET-degrading enzymes.

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Cystic and alveolar echinococcosis are severe zoonotic diseases characterized by long asymptomatic periods lasting months or years. Viable Echinococcus spp. eggs released into the environment through the feces of canids can infect humans through accidental ingestion via hand-to-mouth contact or consumption of contaminated food or water.

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: An automated extrusion-based material deposition is a contemporary and rapid method for pharmaceutical dose-dispensing and preparing (printing) individualized solid dosage forms. The aim of this study was to investigate and gain knowledge of the feasibility of automated extrusion-based material deposition technology in preparing customized prednisolone (PRD)-loaded gel tablets for veterinary applications (primarily for dogs and cats). : The PRD loads of the extrusion-based deposited gel tablets were 0.

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Biotechnological advances in plant growth-promoting rhizobacteria for sustainable agriculture.

World J Microbiol Biotechnol

December 2024

Department of Crop and Animal Production, Safiye Cikrikcioglu Vocational College, Kayseri University, Kayseri, Türkiye.

The rhizosphere, the soil zone surrounding plant roots, serves as a reservoir for numerous beneficial microorganisms that enhance plant productivity and crop yield, with substantial potential for application as biofertilizers. These microbes play critical roles in ecological processes such as nutrient recycling, organic matter decomposition, and mineralization. Plant growth-promoting rhizobacteria (PGPR) represent a promising tool for sustainable agriculture, enabling green management of crop health and growth, being eco-friendly alternatives to replace chemical fertilizers and pesticides.

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Root nodule symbiosis is traditionally recognized in the Fabales, Fagales, Cucurbitales, and Rosales orders within the Rosid I clade of angiosperms. However, ambiguous root nodule formation has been reported in Zygophyllaceae and Roystonea regia (Arecaceae), although a detailed analysis has yet to be conducted. We aimed to perform morphological analyses of root structures in these plants and utilize metagenomic techniques to identify and characterize the bacterial populations within the nodule-like structures.

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Tropical peatlands significantly influence local and global carbon and nitrogen cycles, yet they face growing pressure from anthropogenic activities. Land use changes, such as peatland forests conversion to oil palm plantations, affect the soil microbiome and greenhouse gas (GHG) emissions. However, the temporal dynamics of microbial community changes and their role as GHG indicators are not well understood.

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Microbiome selection and evolution within wild and domesticated plants.

Trends Microbiol

December 2024

Department of Agroecology, Faculty of Technical Sciences, Aarhus University, Slagelse, 4200, Denmark.

Microbes are ubiquitously found across plant surfaces and even within their cells, forming the plant microbiome. Many of these microbes contribute to the functioning of the host and consequently affect its fitness. Therefore, in many contexts, including microbiome effects enables a better understanding of the phenotype of the plant rather than considering the genome alone.

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Balancing increasing demand for wood products while also maintaining forest biodiversity is a paramount challenge. Europe's Biodiversity and Forest Strategies for 2030 attempt to address this challenge. Together, they call for strict protection of 10% of land area, including all primary and old growth forests, increasing use of ecological forestry, and less reliance on monocultural plantations.

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Soil biology: Fungi in plant roots - what do they all do down there?

Curr Biol

December 2024

Department of Botany, Institute of Ecology and Earth Sciences, University of Tartu, Tartu, Estonia. Electronic address:

Plant roots host a range of fungi, including mycorrhizal fungi and endophytes. A new study shows that mucoromycotinan fine root endophytes can selectively utilise organic nitrogen, keep the carbon, transfer nitrogen to host and receive carbon from plants.

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Greening of a boreal rich fen driven by CO fertilisation.

Agric For Meteorol

December 2024

College of Forest Resources and Environmental Science, Michigan Technological University, Houghton, Michigan, USA.

Boreal peatlands store vast amounts of soil organic carbon (C) owing to the imbalance between productivity and decay rates. In the recent decades, this carbon stock has been exposed to a warming climate. During the past decade alone, the Arctic has warmed by ∼ 0.

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Scenarios for future climate predict an increase in precipitation amounts and frequency of rain events, resulting in higher air humidity and soil moisture at high latitudes, including in northern Europe. We analysed the effects of artificially elevated environmental humidity (air relative humidity and soil moisture) on leaf gas exchange, water relations, growth and phenology of silver birch (Betula pendula) trees growing at the Free Air Humidity Manipulation (FAHM) experimental site situated in the hemiboreal vegetation zone, in eastern Estonia, with no occurring water deficit to the trees. The environmental humidity manipulation did not significantly affect the water relations traits but did affect some leaf gas exchange parameters, growth and phenology of the trees.

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Article Synopsis
  • Natural enemies significantly influence insect populations, especially regarding traits, but the impact of non-viral pathogens, particularly entomopathogenic fungi (EPF), is less understood.
  • This paper analyzes data from 79 case studies, finding that EPF infections in insects have a median prevalence of 8.2%, lower than the mortality caused by predators and parasitoids.
  • The study highlights that while fungal infections are widespread among insects, they rarely reach epidemic levels, and more research is needed to explore the dynamics of EPF and insect interactions in natural ecosystems.
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Journal impact factors were devised to qualify and compare university library holdings but are frequently repurposed for use in ranking applications, research papers, and even individual applicants in mycology and beyond. The widely held assumption that mycological studies published in journals with high impact factors add more to systematic mycology than studies published in journals without high impact factors nevertheless lacks evidential underpinning. The present study uses the species hypothesis system of the UNITE database for molecular identification of fungi and other eukaryotes to trace the publication history and impact factor of sequences uncovering new fungal species hypotheses.

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Increasing extreme climatic events threaten the functioning of terrestrial ecosystems. Because soil microbes govern key biogeochemical processes, understanding their response to climate extremes is crucial in predicting the consequences for ecosystem functioning. Here we subjected soils from 30 grasslands across Europe to four contrasting extreme climatic events under common controlled conditions (drought, flood, freezing and heat), and compared the response of soil microbial communities and their functioning with those of undisturbed soils.

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Automated extrusion-based dispensing: Personalized dosing and quality control of clopidogrel tablets for pediatric care.

Eur J Pharm Sci

January 2025

Pharmaceutical Sciences Laboratory, Science and Engineering, Åbo Akademi University, BioCity, Tykistökatu 6A, Turku FI-20520, Finland; CurifyLabs Oy, Salmisaarenaukio 1, Helsinki FI-00180, Finland.

The exploration of three-dimensional (3D) printing inspired technologies in pharmaceutical compounding reveals a promising frontier in personalized medicine manufacture. This study focuses on the development of clopidogrel bisulphate tablets, with doses ranging from 2 mg to 20 mg per tablet, suitable for pediatric use. The study explored a semi-solid extrusion-based deposition technology already being used in compounding pharmacies across several European locations.

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Ecological intensification index: reducing global footprint of agriculture.

Trends Plant Sci

November 2024

Institute of Ecology and Earth Sciences, University of Tartu, Liivi 2, 50409 Tartu, Estonia. Electronic address:

Because of the growing human population, increasing agricultural yields is becoming increasingly more important. However, various environmental crises have led society to demand a reduction in the environmental damage caused by agriculture. Until now, the economic and ecological aspects of plant cultivation have developed largely independently.

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A new species of the Trichia botrytis complex from the cloud forest in Ecuador.

Eur J Protistol

October 2024

Institute of Botany and Landscape Ecology, University Greifswald, Soldmannstr. 15, D17487 Greifswald, Germany.

The paper describes a new myxomycete species, Trichia tuberculata, from the Ecuadorian cloud forest. The phylogeny constructed with nuclear 18S rDNA and mitochondrial 17S rDNA sequences indicates that the taxon is closely related to recently described species T. acetocorticola, T.

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Toward harnessing biodiversity-ecosystem function relationships in fungi.

Trends Ecol Evol

November 2024

Goethe University Frankfurt, Faculty of Biological Sciences, Institute for Ecology, Evolution and Diversity, 60438 Frankfurt am Main, Germany; University of Bayreuth, Bayreuth Center of Ecology and Environmental Research (BayCEER), Fungal Ecology, 95440 Bayreuth, Germany; Global Change Research Institute of the Czech Academy of Sciences, 60300 Brno, Czech Republic.

Fungi are crucial for terrestrial ecosystems, yet the role of fungal diversity in ecosystem functions remains unclear. We synthesize fungal biodiversity and ecosystem function (BEF) relationships, focusing on plant biomass production, carbon storage, decomposition, and pathogen or parasite resistance. The observed BEF relationships for these ecosystem functions vary in strength and direction, complicating generalizations.

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