Sökning: "kestrel"

Hittade 2 uppsatser innehållade ordet kestrel.

1. 1. Probabilistic ecological risk assessment of secondary poisoning from DDT

   Master-uppsats, Lunds universitet/Miljövetenskaplig utbildning

   Författare :Alice Rundegren; [2019]
   Nyckelord :probabilistisk riskbedömning; toppredatorer; DDT; diklordifenyltrikloretan; plantskola; skogsplantskola; artkänslighetsfördelning; bioackumulering; förorenad mark; indirekt exponering; Monte Carlo simulering; probabilistic risk assessment; plant nursery; species sensitivity distribution; polluted soil; indirect exposure; bioaccumulation; Monte Carlo simulation; dichlorodiphenyltrichloroethane; Earth and Environmental Sciences;

   Sammanfattning : Although prohibited since decades, dichlorodiphenyltrichloroethane (DDT) and its metabolites still remain in the soil and pose a threat to ecosystems, where especially birds are susceptible to toxic effects. In this thesis, a model developed in the 1990s was used and updated in order to estimate the risks of DDT to top predators at a forest-plant nursery site. LÄS MER

3. 2. The implications of diet composition and declining vole supply on populations of vole eating raptors

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

   Författare :Katie Andrle; [2011]
   Nyckelord :Tengmalm’s owl; kestrel; breeding density; vole decline; food supply; small mammal specialization; predicted and observed trends;

   Sammanfattning : Breeding success for specialist avian predators in northern Fennoscandia is highly dependent on cyclic vole populations. The 3-4 year high amplitude vole cycles once regular to this region have shown significant long term declines in abundance since the 1970s. LÄS MER