Sökning: "Information Foraging"

Visar resultat 1 - 5 av 34 uppsatser innehållade orden Information Foraging.

  1. 1. Brunifiering av akvatiska ekosystem: En experimentell studie som undersöker tröskelvärde för predator- och bytesförhållande vid en gradient från klart till brunt vatten

    Kandidat-uppsats, Lunds universitet/Centrum för miljö- och klimatvetenskap (CEC)

    Författare :Erik Nilsson; [2023]
    Nyckelord :Brunifiering; tröskelvärde; födointag; predator- och bytesförhållande; Earth and Environmental Sciences;

    Sammanfattning : Browning of water has increased over the last couple of decades on the northern hemisphere. Research show that possible drivers for this change are land use change, climate change, increased precipitation and increased temperatures. LÄS MER

  3. 2. Att bespruta eller inte bespruta?- En studie om växtskyddsmedels påverkan på pollinatörer i svenska jordgubbsodlingar

    Kandidat-uppsats, Lunds universitet/Centrum för miljö- och klimatvetenskap (CEC)

    Författare :Elin Johansson; [2023]
    Nyckelord :pollinatörer; fungicider; herbicider; insekticider; jordgubbar; växtskyddsmedel; Earth and Environmental Sciences;

    Sammanfattning : This study investigated how pollinators are affected by plant protection products (PPP), what type of PPPs strawberry farmers used and what knowledge they had about these products. To investigate this, a literature review and a survey was conducted. The questionnaire was sent to 70 Swedish strawberry farmers of which 11% participated in the study. LÄS MER

  4. 3. Investigating the influence of the tidal regime on harbour porpoise Phocoena phocoena distribution in Mount’s Bay, Cornwall

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Duncan Jones; [2023]
    Nyckelord :Geography; Geographical Information Systems; GIS; Habitat Modelling; Harbour Porpoise; MaxEnt; Tidal Processes; Conservation; Earth and Environmental Sciences;

    Sammanfattning : Investigating the influence of the tidal regime on harbour porpoise Phocoena phocoena distribution in Mount’s Bay, Cornwall Abstract Unintentional by-catch in fishing gear is a significant cause of mortality of harbour porpoises in UK waters. Understanding the spatial distribution of harbour porpoises at fine scales and how this changes over time is essential when trying to understand where these lethal interactions might occur. LÄS MER

  5. 4. Body patterning and cognition in cephalopods - a literature review

    Master-uppsats, SLU/Dept. of Animal Environment and Health

    Författare :Georgina Chu; [2023]
    Nyckelord :cephalopods; octopus; body patterning; colour alteration; chromatophores; pigment cells; cognition; learning and memory;

    Sammanfattning : Cephalopods are a valuable model for studying the evolution of cognition due to their distinctive brain structure, organisation, and connectivity patterns compared to vertebrates. The development of large brains and behavioural complexities are believed to be triggered by evolutionary pressures stemming from factors like heightened predation, more demanding foraging conditions, and intense mating competition. LÄS MER

  7. 5. The perfect wing, The perfect trade-off? : What implements the main selection pressure on wing morphology?

    Master-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildning

    Författare :Emme MacDonald; [2023]
    Nyckelord :Bird; wing morphology; migration; habitat; aspect ratio; wing loading;

    Sammanfattning : Selection pressure is a constant force in evolution, pushing birds and their wings towards an optimal shape and structure, were increasing performance, and minimizing the costs is central. But even though the science of aerodynamics can provide calculations of the optimal construction for the wing in different situations this rarely directly correspond to what is observed in nature. LÄS MER