Sökning: "hemiptera"

Hittade 5 uppsatser innehållade ordet hemiptera.

  1. 1. Biodiversity of aquatic invertebrates in urban ponds: effects of land use

    Kandidat-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildning

    Författare :Roberta Hedberg; [2019]
    Nyckelord :;

    Sammanfattning : Urban ponds have the potential to hold large abundance and diversity of aquatic invertebrates, which could maintain an overall high biodiversity in the urban landscape. Little is known about how aquatic systems, such as ponds, are affected by the fast rate of urbanisation caused by an increasing human population together with the expansion of cities. LÄS MER

  3. 2. Towards a sustainable pest management of the invasive bug Halyomorpha halys in Trentino province, Italy

    Master-uppsats, SLU/Dept. of Biosystems and Technology (from 130101)

    Författare :Damiano Moser; [2019]
    Nyckelord :Brown Marmorated Stink Bug; H. Halys; hemiptera; biotremology; Semi-Structured Interview; Thematic Analysis; invasive species; stakeholder perception;

    Sammanfattning : Some invasive insects are agricultural pests, like the brown marmorated stinky bug (BMSB), an extremely phytophagous pentatomids. The lack of efficient low-impact control strategies makes this insect extremely dangerous for agricultural crops. In Italy, the first established populations of BMSB were found in 2012. LÄS MER

  4. 3. Vedlevande Coleoptera och Hemiptera förekomst på öar i Kolsnaren i sydvästra Södermanland

    Kandidat-uppsats, Högskolan i Halmstad/Akademin för ekonomi, teknik och naturvetenskap

    Författare :Jakob Bergström; [2017]
    Nyckelord :Vedlevande Coleoptera;

    Sammanfattning : ABSTRACT Seven islands in the lake Kolsnaren have been investigated. I have inventoried saproxylic insects and investigated what characters on dead wood and characters at the islands that have affected species number of beetles (Coleoptera) and true bugs (Hemiptera). LÄS MER

  5. 4. Evaluating six crop mixes used for game fields in southwest Sweden : biomass production, fallow deer preference and species diversity

    Magister-uppsats, SLU/Dept. of Ecology

    Författare :Elin Grönberg; [2011]
    Nyckelord :arthropods ; biomass production; biomass consumption; crop mix; Dama dama; fallow deer; game field; species diversity index;

    Sammanfattning : Game fields are one way to divert animals away from sensitive areas, create shelter and forage, and also to increase the biological diversity. In this study I investigated how the plant composition in six different crop mixes used for game fields affected the biomass production, biomass consumption and biological diversity at the Koberg estate in southwestern Sweden. LÄS MER

  7. 5. Field margins vs. insecticides : factors affecting the density of predators attacking Plutella xylostella

    L3-uppsats, SLU/Dept. of Ecology

    Författare :Lina Grönberg; [2007]
    Nyckelord :predators; Plutella xylostella; diamondback moth; field margins; biological control; Nicaragua;

    Sammanfattning : Biological control provides a tool to reach goals such as maintaining sustainable agroecosystems and decreasing the use of pesticides. Studies show that generalist predators can reduce prey populations effectively and, thus, may function as good biocontrol agents. LÄS MER