7 Works

Research of a contact stresses in swivel elements of flexible shaft in screw conveyor for transportation of agricultural materials

Volodymyr Bulgakov, Jüri Olt, Semjons Ivanovs, Oleksandra Trokhaniak, Jaroslav Gadzalo, Valerii Adamchuk, Mykhailo Chernovol, Simone Pascuzzi, Francesco Santoro & Margus Arak
The paper presents the new design of the rotating part with ball-bearing swivel joints between its sections for flexible screw conveyors. The new design provides for the improvement of the operation efficiency and loading capacity, the enhancement of the technological capabilities and the reduction of the admissible curvature radius. The contact stresses in the swivel element as the most loaded area in the rotating part have been analysed. It has been established that the maximum...

Chesapeake Bay and Baltic Sea phytoplankton sample metadata

Kalle Olli
We analyze the relationship between species richness, salinity and resource use efficiency from 10712 summer (June to September) surface phytoplankton samples from the Chesapeake Bay (n=3967) and the Baltic Sea (n=6745). As sample species richness (alpha diversity) has a U-shape distribution along an estuarine salinity gradient and species richness is known to scale with resource use efficiency – an important ecosystem function, we hypothesized that the ecosystem function can be predicted from salinity.

Data recorded for leaf size, and leaf vein and areole measurements taken from nine Magnoliaceae species

Peijian Shi, Qinyue Miao, Ülo Niinemets, Mengdi Liu, Yirong Li, Kexin Yu & Karl Niklas
Across species, the density of major veins in leaves scales inversely with leaf area. Yet, minor vein density manifests no clear relationship with respect to leaf are, despite having the potential to provide important insights into the trade-off between investments in leaf mechanical support, hydraulics, and light interception. To examine this phenomenon, between 120−380 mature leaves from each of nine Magnoliaceae species were sampled from Nanjing Forestry University campus and Nanjing Botanical Garden, Chinese Academy...

Genomics of humic adaptation in Eurasian perch (Perca fluviatilis): SNP genotypes of 32 perch individuals, supplementary figures and tables

Mikhail Ozerov, Kristina Noreikiene, Siim Kahar, Magnus Huss, Ari Huusko, Toomas Kõiv, Margot Sepp, María López, Anna Gårdmark, Riho Gross & Anti Vasemägi
Extreme environments are inhospitable to the majority of species, but some organisms are able to survive in such hostile conditions due to evolutionary adaptations. For example, modern bony fishes have colonized various aquatic environments, including perpetually dark, hypoxic, hypersaline and toxic habitats. Eurasian perch (Perca fluviatilis) is among the few fish species of northern latitudes that is able to live in very acidic humic lakes. Such lakes represent almost “nocturnal” environments; they contain high levels...

Emerging stability of forest productivity by mixing two species buffers temperature destabilizing effect

Miren Del Rio, Ricardo Ruiz‐Peinado, Stig‐Olof Holm, Aris Jansons, Thomas Nord‐Larsen, Kris Verheyen, Andrés Bravo‐Oviedo, Hans Pretzsch, Ricardo Ruiz-Peinado, Hervé Jactel, Lluís Coll, Magnus Löf, Jorge Aldea, Christian Ammer, Admir Avdagić, Ignacio Barbeito, Kamil Bielak, Felipe Bravo, Gediminas Brazaitis, Jakub Cerný, Catherine Collet, Sonia Condés, Lars Drössler, Marek Fabrika, Michael Heym … & Andrés Bravo-Oviedo
The increasing disturbances in monocultures around the world are testimony to their instability under global change. Many studies have claimed that temporal stability of productivity increase with species richness, although the ecological fundaments have mainly been investigated through diversity experiments. To adequately manage forest ecosystems, it is necessary to have a comprehensive understanding of the effect of mixing species on the temporal stability of productivity and the way in which this it is influenced by...

Plankton samples of inland waters : [catalog]

Reet Laugaste, Henn Timm & Evi Lill
The number of sampled waterbodies was 1017. Most of the samples (22,900) have been collected from Estonia. There are also more than 800 samples from Russia (mainly from the eastern and southern part of Lake Peipsi) and ca 100 from other countries. In addition, there are also some samples of the Baltic Sea. Register code: according to the Estonian environmental register: https://keskkonnaagentuur.ee/en Of the total material, more than 13,000 specimens are phytoplankton, the rest is...

Supplementary materials to the article \"Medicinal Plants in Semi-Natural Grasslands: Impact of Management\"

Katrin Heinsoo
The supplementary material contains (S1) species accumulation curves of different habitats based on species lists originating from https://dspace.emu.ee/xmlui/handle/10492/6300 and the Estonian Environmental Board database. Lists of Estonian MP species (S2) by each scenario are based on the following literature sources: Estonian Agency of Medicine. Ravimina Määratletud Raviomadustega Ainete ja Taimede Nimekiri; 2020 (access 25.11.2020) (scenario 1); Tammeorg, J.; Kook, O.; Vilbaste, G. Eesti NSV Ravimtaimed, 5th ed.; Valgus: Tallinn, Estonia, 1984 (scenario 2) and Raal,...

Registration Year

  • 2022
    7

Resource Types

  • Dataset
    5
  • Text
    2

Affiliations

  • Estonian University of Life Sciences
    7
  • Swedish University of Agricultural Sciences
    2
  • National Academy of Agrarian Sciences of Ukraine
    1
  • Ghent University
    1
  • Technical University of Zvolen
    1
  • Ukrainian National Forestry University
    1
  • Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria
    1
  • University of Agriculture in Krakow
    1
  • University of Valladolid
    1
  • Central Ukrainian National Technical University
    1