Sökning: "Pan-traps"

Visar resultat 1 - 5 av 8 uppsatser innehållade ordet Pan-traps.

  1. 1. Ground-nesting bees in the age of urbanization : quality of sandy habitat and wild bee diversity in Uppsala, Sweden

    Master-uppsats, SLU/Dept. of Ecology

    Författare :Indre Cepukaite; [2022]
    Nyckelord :ground-nesting bees; wild bees; cleptoparasitic bees; indicator taxon; urbanization; sandy soil; bare soil; habitat age; ground cover; diversity; pollinator protection and conservation;

    Sammanfattning : Wild bees are indispensable pollinators of most flowering plants and agricultural crops, and thus are vital components of functioning ecosystems and provide essential ecosystem services to humans. This study primarily aimed to discover the environmental features of nesting habitat that are mostly associated with wild ground-nesting and associated cleptoparasitic bee species diversity in urban landscape. LÄS MER

  3. 2. Partners in crime – How cabbage seed weevil assists brassica pod midge in damaging pods of winter oilseed rape in fields in Southern Sweden : how is insect abundance related to crop damage?

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

    Författare :Sarah Heithausen; [2020]
    Nyckelord :monitoring; Ceutorhynchus obstrictus; Dasineura brassica; Brassica napus; Integrated Pest Management; economic threshold; pan trap; sticky trap;

    Sammanfattning : The brassica pod midge (Dasineura brassicae) has emerged as an important pest causing problems in Winter Oilseed Rape (WOSR) (Brassica napus ssp. napus) production in Southern Sweden during recent years. Adult female D. brassicae oviposit into WOSR pods. LÄS MER

  4. 3. Blygrå rapsvivelns (Ceutorhynchus obstrictus) aktivitet i skånska rapsfält : dess påverkan på skador av skidgallmygga (Dasineura brassicae)

    Kandidat-uppsats, SLU/Dept. of Plant Protection Biology

    Författare :Karin Henriksson; [2019]
    Nyckelord :blygrå rapsvivel; skidgallmygga; höstraps; Ceutorhynchus obstrictus; Dasineura brassicae;

    Sammanfattning : Höstraps är Sveriges mest odlade oljeväxt. Den har odlats som en avbrottsgröda för att förhindra jordburna sjukdomar och för dess oljerika frön, vilka vi använder i framställning av rapsolja och margarin. Idag odlas höstraps även för framställning av biobränsle. LÄS MER

  5. 4. Landscape and within-field factors affecting the damages of the brassica pod midge (Dasineura brassicae) in Swedish winter oilseed rape cultivation

    Master-uppsats, SLU/Dept. of Plant Protection Biology

    Författare :Axel Rösvik; [2019]
    Nyckelord :landscape ecology; Dasineura brassicae; Ceutorhynchus obstrictus; Brassica napus; winter oilseed rap;

    Sammanfattning : The brassica pod midge (Dasineura brassicae) has been a serious upcoming problem in Swedish oilseed cultivation during recent years. This small dipteran utilized pods damaged by its facilitator, the cabbage seed weevil (Ceutorynchus obstrictus), to be able to oviposit. The larvae of D. LÄS MER

  7. 5. The effect of ecological forest restoration on bumblebees (Bombus spp.) in the boreal forest

    Master-uppsats, SLU/Dept. of Wildlife, Fish and Environmental Studies

    Författare :Raisja Spijker; [2018]
    Nyckelord :bumblebee; Bombus spp.; forest restoration; abundance; species richness; species composition; boreal forest;

    Sammanfattning : Insect pollinators are an important part of biodiversity, yet the number of pollinating insects is declining all over the world. Of all the wild plant species about 80% are reliant on insect pollinators, with bees being most important. One of the main causes behind the decline of insect pollinators is the loss and fragmentation of habitats. LÄS MER