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Showing result 1 - 5 of 8 essays matching the above criteria.

  1. 1. Evaluating forest restoration effects on timing of avian dawn chorus in Ranomafana National Park, Madagascar

    University essay from SLU/Dept. of Wildlife, Fish and Environmental Studies

    Author : Marjolein Pijper; [2023]
    Keywords : acoustic monitoring; forest restoration; dawn chorus; avian singing; bird monitoring; automatic recognition;

    Abstract : Monitoring of forest restoration efforts is essential to ensure healthy, self-sustaining tropical rainforests. Passive acoustic monitoring is used to monitor vocal activity of birds, which play a key role in forest ecosystems as seed dispersers. READ MORE

  3. 2. Early-stage detection of bark beetle infested spruce forest stands using Sentinel-2 data and vegetation indices

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Karl Piltz; [2022]
    Keywords : Geomatics; Remote sensing; Bark beetle; Early-stage; Vegetation index; Sentinel-2; Spruce; Forestry; Earth and Environmental Sciences;

    Abstract : The European spruce bark beetle is an insect that is often referred to as a pest. Responsible for the destruction of over 150 million m3 of Norwegian spruce forest in Europe over the last 50 years makes this insect one of the major disturbances to the forest industry. READ MORE

  4. 3. Insektsamhällen i restaurerade skogar : en studie på hur abundansen av insektordningarna skalbaggar (Coleoptera), tvåvingar (Diptera), steklar (Hymenoptera) och fjärilar (Lepidoptera) ser ut i luckhuggna och brända bestånd jämfört med kontrollskogar

    University essay from SLU/Dept. of Forest Ecology and Management

    Author : William Arnvik; Emil Gustavsson; [2022]
    Keywords : Naturvårdsbränning; Luckhuggning; Skogsrestaurering; Boreal skog; Död ved; Naturvård;

    Abstract : Den biologiska mångfalden i de boreala skogarna har minskat. Det finns flera orsaker till detta, varav ett är trakthyggesbruket. På grund av trakthyggesbruk har dynamiken och strukturen i skogarna förändrats och strukturen till ett onaturligt tillstånd. Det skapas inte mycket gammal skog p. READ MORE

  5. 4. Effects of dead wood on arthropods in managed pine forests in Sweden

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Stephanie Jonsson; [2021]
    Keywords : Dead wood; arthropod; pest mitigation;

    Abstract : Forests provide humans with a range of valuable ecosystem services, but current forest management practices may increase susceptibility to damage from disturbances such as pest insects. One such practise is the harvesting of residue, which decreases the amount of dead wood in the forest. READ MORE

  6. 5. NDVI time series analysis for desert locust outbreak detection and quantification analysis of its impact on vegetation productivity of Sahel

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Evangelos Oikonomopoulos; [2020]
    Keywords : Physical Geography and Ecosystem Analysis; Primary Productivity; Desert Locust; NDVI; Time Series Analysis; Outbreak Detection; Food Security; Sahel; Insect Disturbances; GEM; Earth and Environmental Sciences;

    Abstract : It has been shown that the semi-arid environment of the Sahelian belt plays an important role in the global carbon uptake as the fluctuation of its primary productivity can be determinant for the global carbon uptake. The insect Schistocerca gregaria commonly known as the desert locust is a disturbance factor that can affect the vegetation productivity for consecutive seasons. READ MORE