Sökning: "Hugo von Zeipel"

Hittade 2 avhandlingar innehållade orden Hugo von Zeipel.

  1. 1. The spatial and temporal dynamics of plant-animal interactions in the forest herb Actaea spicata

    Författare :Hugo von Zeipel; Johan Ehrlén; Ove Eriksson; Saskya van Nouhuys; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Eupithecia immundata; parasitoid; rodent; seed predation; dispersal; recruitment; multitrophic; metapopulation; trophic cascades; community complexity; Biology; Biologi; Plant Ecology; växtekologi;

    Sammanfattning : Landscape effects on species performance currently receives much attention. Habitat loss and fragmentation are considered major threats to species diversity. Deciduous forests in southern Sweden are previous wooded pastures that have become species-rich communities appearing as islands in agricultural landscapes, varying in species composition. LÄS MER

  3. 2. Phytoplankton response to a changing climate in lakes in northern Sweden

    Författare :Jennie Sandström; Nils Ekelund; Hugo von Zeipel; Mittuniversitetet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Climate change; cyanobacteria; ice break-up; oligotrophic lakes; phytoplankton; temperature;

    Sammanfattning : In a climate change perspective, increased air temperatures are already a reality and are expected to increase even more in the future, especially in areas at high latitudes. The present thesis therefore addresses the influence of climate change on the physical properties and the phytoplankton communities of typical small and oligotrophic lakes in northern Sweden (62-64˚N). LÄS MER