The dynamics of stands in the mid-elevation old-growth
Douglas-fir (Pseudotsuga menziesii) forests of the central western
Oregon Cascade Range were investigated using stand structure
analysis. Trees with different growth rates were commonly present
in the same stand, which resulted often in a weak correlation
between tree diameter and age. Thus,...
Experiments were conducted to determine the effect of rumen
fluid on live and motile spermatozoa of semen extended in yolk-citrate
and stored at 4°C. Preliminary work showed that levels of
rumen fluid below 10 percent were beneficial in keeping spermatozoan
activity up to 14 days in storage. For more revealing...