Sökning: "Dust seeds"

Hittade 2 avhandlingar innehållade orden Dust seeds.

1. 1. Recruitment ecology and fungal interactions in mycoheterotrophic Ericaceae

   Författare :Veronika A. Johansson; Ove Eriksson; Andrew Taylor; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; 454 Pyrosequencing; Dispersal limitation; Dust seeds; Ectomycorrhiza; Ericaceae; Microsite limitation; Monotropa hypopitys; Mycoheterotroph; Pyroleae; Seed limitation; Stable isotopes; Subterranean seedling; Symbiotic germination; Tricholoma; Plant Ecology; växtekologi;

   Sammanfattning : There are generally two contrasting alternatives to what limits recruitment in plants, namely the availability of seeds (seed limitation) or the quality or quantity of suitable sites (microsite limitation). Dust seeds, the smallest existing seeds, lack or have minimal nutrient reserves. LÄS MER

3. 2. The Formation of Giant Planets

   Författare :Michiel Lambrechts; Astronomi - Genomgår omorganisation; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Planet formation; Solar System; Exoplanets; Giant planets; Hydrodynamics;

   Sammanfattning : Giant planets form embedded in a protoplanetary disc around a young star. Close to the midplane a large fraction of the available mass in solids is found in particles of cm to dm in size, which drift towards the star due to friction with the surrounding gas. LÄS MER