Essays about: "encroachment"

Showing result 6 - 10 of 39 essays containing the word encroachment.

  1. 6. Hydrological control of plant species composition and distribution in Dal River alluvial meadows

    University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Author : Matouš Jimel; [2023]
    Keywords : Riparian zone; Alluvial meadows; Riparian vegetation; Regulated river; Flooding;

    Abstract : Northern boreal alluvial meadows are ecologically significant semi-natural ecosystems within the riparian zone. The effects of disturbance like flooding, grazing, and mowing have historically maintained high nutrient turnover and succession disruption that led to high biodiversity, leading to their inclusion in the Natura 2000 network. READ MORE

  3. 7. Recent expansion of the endangered beetle Plagionotus detritus in the greater Stockholm area

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Elin Lönnberg; [2023]
    Keywords : ;

    Abstract : Biodiversity is declining worldwide, and the biggest reason for this is habitat destruction. In Sweden one third of all the red listed species belongs in broadleaved deciduous forests. The  most common reason for the endangerment of these species is the destruction of the deciduous forest. READ MORE

  4. 8. Looking for shrubs in an alvar: Investigating classification of orthophotos as a way of mapping shrub species Juniperus communis and Dasiphora fruticose on Stora Alvaret, Öland

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap; Lunds universitet/Lantmäteri (CI)

    Author : Jorun Westman; [2022]
    Keywords : Physical Geography; Orthophoto; Stora Alvaret; Shrub; Monitoring; Earth and Environmental Sciences; Technology and Engineering;

    Abstract : Loss of biodiversity is an immediate threat to the planet and if no actions are taken it is expected to accelerate. The highest species richness on smaller scale is found in semi-natural temperate grasslands, with one of the documented records from Stora Alvaret on Öland, Sweden. READ MORE

  5. 9. Traffic safety analysis by surrogate measures:an extreme value approach

    University essay from Lunds universitet/Matematisk statistik

    Author : Heidi Mach; [2022]
    Keywords : Mathematics and Statistics;

    Abstract : Road safety analyses are required for the prevention of road accident fatalities. In Europe, the ambition is "Vision Zero". Data that was used is collected by the research group Transport and Roads which is part of Department of Technology and Society at LTH, Lund University. READ MORE

  6. 10. Analysis and Simulation Study of Stochastic Time-To-Collision as a Severity Measure in Traffic Security

    University essay from Lunds universitet/Matematisk statistik

    Author : Per Niklas Benzler Waaler; [2020]
    Keywords : time; collision; ttc; stochastic; probability; transform; transformation; traffic; data; under; estimation; post; encroachment; mixture; distribution; simulation; study; encounter; conflict; trajectory; prediction; road; user; safety; severity; surrogate; measure; Mathematics and Statistics;

    Abstract : Traffic accidents are extremely rare, creating the need for surrogate methods for safety analysis that makes efficient use of the information provided by traffic conflicts, which also are limited in availability. The severity measure time-to-collision (TTC) in combination with extreme value theory have so far been one of the primary measures used to infer traffic safety levels, but it relies on unrealistic assumptions that results in severity measures that do not always agree well with observed danger. READ MORE