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Tissue m.c. and rates of CO2 and O2 exchange were determined in the laboratory for branches of L. tulipifera collected at 2 week intervals over a 1 yr...
Read moreDitches in this area in the province of Zuid-Holland, Netherlands, are often causing soil pollution due to the use of contaminated materials (includin...
Read moreDescribes a survey of porcupine feeding on Pinyon and Yellow Pine in the Mesa Verde area (S.W. Colorado). A tree-ring chronology was constructed, base...
Read moreThe dynamics of a virus disease in a perennial plant population are modelled. The population is divided into healthy, latently infected, infectious an...
Read moreThis study examines how conditioning time and mechanisms, such as microbial community changes, nutrient levels and environmental factors, affect plant...
Read moreClimax perennial grasses from Rhodesia showed greater preference than earlier seral species or crop cultivars for the ammonium source of nitrogen. It ...
Read moreThe light reflectance, type of epiphyte cover, and lichen flora of samples of oak trees at fifty-three sites along the transect were recorded. The cor...
Read moreThe apple orchards studied had discontinuous bush-and hedge-type canopies of mean leaf-area indexes of 1-1-4. These values were low, owing to the exis...
Read moreNormal field populations of deep-burrowing or shallow-working earthworms were inoculated into small plots that had been sterilized with dichloropropan...
Read moreIn a survey of 68 reclaimed china clay wastes, the grass/clover vegetation was scored for overall cover, legume cover and the number of ingressed spp....
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