It was observed that in case of abiotically
treated HDPE peaks were formed at 1718.
Conversely, for abiotically
dispersed, insect pollinated trees there are almost as many species displaying female-biased ratios as there are species that display male bias.
The treatment (-roots, +organic P) is not used because results showed that organic P was not significantly abiotically
mineralised Step 2.
For ecotonal trees to grow tall, either away from the protective forest edge (timberline) or away from the protective boundary air layer next to the ground (generated both abiotically
and biotically) they must tolerate or avoid higher wind speeds, a lack of winter snow coverage, plus increased sky (radiation) exposure during both night and day (Tranquillini, 1979; Hadley & Smith, 1987; Smith et al.
Another possible explanation for the positive influence of clay on mineralisation of clover N is the novel discovery that kaolinite and other natural clays appear to have the ability to catalyse abiotically
the deamination and decarboxylation of amino acids (Huang 1990).
Finally, species with these less distinctive flowers may be abiotically
pollinated, a hypothesis supported by the high percentage of wind-pollinated species in the flora.
We would expect degradation of DCD to be minimal; DCD is considered abiotically
stable in water and not hydrolysed, regardless of pH (Anon.
In support of this hypothesis, Eriksson and Bremer (1991) found that among shrubby Rubiaceae, genera with fleshy, mainly bird-dispersed fruits are much more species rich than are genera with dry, abiotically
Tiffney (1986) suggested that the transition from a predominance of abiotically
dispersed fruits to a mixture of biotically and abiotically
dispersed fruits in the Fagaceae (and Juglandaceae) occurred in the early Tertiary, coeval with the radiation of potential mammal and bird dispersal agents.
Extracellular b-l, 3-glucanases in stem rust affected and abiotically
stressed wheat leaves: Immunocytochemical localization of the enzyme and detection of multiple forms in gels by activity staining with dye-labeled laminarin.
Surviving seeds may remain on the soil surface or be abiotically
buried where they may suffer additional mortality or germinate.
Indeed, many abiotically
pollinated species entirely lack petals and sepals, presumably because these structures may restrict the release and mixing of pollen into the air and compete with stigmas as surfaces on which pollen is collected from air streams.