01870nas a2200169   4500008004100000245008500041210006900126300001400195490000700209520129800216653002101514653004401535653002601579653003001605100001501635856005001650       1974                        eng d00aReproductive dynamics of four plant communities of southwestern British Columbia0 aReproductive dynamics of four plant communities of southwestern   a1819-18340 v523 a<p>A study of angiosperm reproductive biology was made in four plant communities in southwestern British Columbia. Species of all four communities have staggered, peak flowering times, resulting in phenological spectra. Anemophily is the major mode of pollination in a salt marsh, while entomophily predominates in a subalpine meadow. Two sphagnum bogs have more of a balance between wind and insect pollination. There are corresponding differences in the proportions of showy-flowered species in the communities. It is proposed that interspecific competition has greatly influenced the evolution of both species and community flowering strategies. Biotic seed dispersal prevails in the salt marsh and bogs, while most of the subalpine meadow species are wind-dispersed. Species and community modes of dispersal depend on the nature of the vegetation and the relative availability of dispersal vectors, as well as on diaspore morphology. Although vegetative reproduction and self-compatibility are fairly common, the bulb of the flora and vegetation at all four sites has breeding systems promoting outcrossing. There is little evidence that the physical environments of these communities, all harsh in at least some respect, have selectively favored autogamous or agamospermous species.</p>
10abreeding systems10aflowering times, phenology, pollination10areproductive dynamics10aseed dispersal, diaspores1 aPojar, Jim  uhttps://juncaginaceae.myspecies.info/node/280