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The occurrence of 46 types of habitat in Caernarvonshire was recorded in terms of percentage occurrence and percentage cover within defined areas and ...
Read moreThe model, applicable to all terrestrial plants, accounted for 90% of the variance in field measurements on Liriodendron tulipifera.
Read moreIn a cocoa plantation in Costa Rica, T. jaty was a common visitor to the flowers; on 70% of observed visits, the bees collected pollen. However, fruit...
Read moreThe flowers of 3 ornamental Malus spp. (M. aldenhamensis, M. floribunda cv. Hillierii and M. cv. Golden Hornet) and of cvs Cox's Orange Pippin, Worces...
Read moreFactors influencing the food intake of reindeer (Rangifer tarandus tarandus) on tundra were studied using tame animals. Food intake was estimated from...
Read moreDescribes a method for estimating the income of K, Mg, Ca, P and Na to a woodland ecosystem in the airborne particles caught by the tree canopy, and g...
Read moreA study of P. sitchensis from five North American provenances, ranging between latitudes 47°N. and 57°N., indicated that maximum net photosynthesis te...
Read moreMonocultures and mixtures of crimson clover and ryegrass (Lolium multiflorum) were grown in filtered air or 0.03 or 0.09 p.p.m. O3 concentrations for ...
Read moreStudies were carried out in Ghana on the population dynamics of larvae of Characoma stictigrapta Hmps., a pest of the pods and leaves of cacao. Larvae...
Read moreThe enchytraeid populations of soil samples were recorded for 4 yr in a newly felled area and untreated control area (Sept. 1975-79) and for 2 yr (197...
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