Essays about: "vivipara"

Found 4 essays containing the word vivipara.

  1. 1. Reforestation in the far north : comparing effects of the native tree species Betula pubescens and the non-native Pinus contorta in Iceland

    University essay from SLU/Dept. of Wildlife, Fish and Environmental Studies

    Author : Elin Fries; [2017]
    Keywords : Iceland; non-native tree species; understory vegetation; P. contorta; B. pubescens;

    Abstract : The use of non-native tree species in forestry is both praised and questioned. Foresters have often promoted their use, mainly because of higher growth rates, resilience to pests and diseases and improved survival under harsh conditions. READ MORE

  3. 2. Växter på övergivna betesmarker : förekomst, överlevnad och utdöende på 21 lokaler i Västmanland

    University essay from SLU/Dept. of Ecology

    Author : Erik Kohlström; [2015]
    Keywords : växter; betesmarker; igenväxning; restaurering; utdöende; överlevnad;

    Abstract : Over the past century, changes in land use have led to large scale abandonment of semi-natural grasslands throughout northern Europe. During the ensuing succession species richness declines as grassland specialist plants are out-competed by a few dominant species. READ MORE

  4. 3. Embryonal näringsförsörjning hos sandtigerhaj och kortfenad makohaj

    University essay from SLU/Dept. of Biomedical Sciences and Veterinary Public Health

    Author : Lotta Wahldén; [2010]
    Keywords : haj; reproduktion; embryonalutveckling; näringsförsörjning; vivipara; ovipara; broskfisk;

    Abstract : .... READ MORE

  5. 4. Amphibian and reptile distribution in forests adjacent to watercourses

    University essay from Fakulteten för samhälls- och livsvetenskaper

    Author : Cecilia Olsson; [2008]
    Keywords : Rana arvalis; Rana temporaria; Natrix natrix; Lacerta vivpara; deciduous trees; canopy cover; woody debris; bare ground;

    Abstract : Worldwide amphibians and reptiles are declining with habitat fragmentation and destruction as the primary cause. Riparian areas are important for the herpetofauna, but as land is converted to agriculture or harvested for timber the areas are diminishing. READ MORE