Sökning: "supplementary feeding"
Visar resultat 1 - 5 av 17 avhandlingar innehållade orden supplementary feeding.
1. Resource economy of carnivorous plants: Interactions between prey capture and plant performance in three subarctic Pinguicula species
Sammanfattning : In this thesis, I have studied in situ the resource economy of the three carnivorous plant species Pinguicula alpina, P. villosa and P. vulgaris in a subarctic environment. The prey capture varied among individual plants, years and species. LÄS MER
Sammanfattning : Males and females differ in morphology and behaviour, so that selection acts differently on the two sexes. This changes the relative reproductive success of males and females, and it is beneficial for parents to bias the sex ratio of their broods in favour of the sex with the best survival and breeding prospects. LÄS MER
Sammanfattning : During the first half of the nineteenth century infant mortality rates in Ådalen, an agrarian region in northern Sweden, were among the highest in the country. During the second half of the century the region experienced a rapid population growth and a restructuring of the economy in conjunction with the expansion of the sawmill industry. LÄS MER
Sammanfattning : This thesis is concerned with how prehistoric infants were fed in different physical and cultural environments, and in particular what impact the economic, social, and epidemiological changes associated with the development of agriculture had on infant feeding practices. In order to examine these effects, stable isotope ratio analysis has been used to assess the duration of breastfeeding and weaning in a variety of prehistoric contexts. LÄS MER
Sammanfattning : Atlantic salmon populations have declined worldwide across their distribution. This is partly due to hydro power development that has degraded freshwater habitat and cut off the migration routes between the freshwater habitat and the sea. LÄS MER