Essays about: "Fredrik Ahlberg"

Found 3 essays containing the words Fredrik Ahlberg.

1. 1. Effects of tillage and straw treatments on earthworm abundance : study in two Swedish long-term field trials

   University essay from SLU/Dept. of Soil and Environment

   Author : Fredrik Ahlberg; [2023]
   Keywords : anecic; conventional tillage; endogeic; no-tillage; reduced tillage;

   Abstract : Earthworms have several functions in the soil, for instance redistribution of organic matter and enhancing plant available nutrients. Earthworms are divided into three ecological groups, with different functions in the soil. The groups are: anecic, endogeic and epigeic. READ MORE

3. 2. Prognosmetod för jordloppor i vårraps : kan sugfällor användas för att förutsäga angrepp?

   University essay from SLU/Dept. of Ecology

   Author : Fredrik Ahlberg; [2021]
   Keywords : Phyllotreta; Brassica napus; raps; integrerat växtskydd; insektsangrepp;

   Abstract : I Sverige finns det fem arter av jordloppor inom släktet Phyllotreta som kan orsaka skador i vårraps, P. atra, P. nigripes P. striolata, P, vittula och P. READ MORE

4. 3. Application of the Ordered Lorenz Curve in the Analysis of a Non-Life Insurance Portfolio

   University essay from KTH/Matematisk statistik

   Author : Fredrik Ahlberg; [2019]
   Keywords : ;

   Abstract : Insurance analysts have a great variety of assessment tools at their disposal in order to ensure a healthy insurance portfolio. To describe the financial income and loss distribution of the insurance portfolio one of the more fundamental mathematical instrument is the Lorenz curve. A measure developed in the early 19th centrury by Max O. READ MORE