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Along two traverses near Mineral, Virginia (USA) (where soil metal concentrations vary greatly because of the natural weathering of sulphide mineral d...
Read moreIn Britain, man's alteration to river habitats began with forest clearances and continued with developments for water power and navigation. Industrial...
Read moreAverage summer sheep population densities in ewe units/ha at 56 sites in Snowdonia in 1957-68 were 4.99-10.65 on herb-rich Agrostis tenuis/Festuca ovi...
Read moreResults are reported from a mechanical diallel experiment with Avena fatua, A. ludoviciana, A. strigosa and oats cv. Blenda. Relative yield totals bas...
Read moreThe paper describes the methods, data collection, data analysis and recommendations of a project to develop and trial surveys of mountain hares (Lepus...
Read moreA compartment model is described which simulates the root biomass dynamics of shortgrass prairie; fluxes between compartments are treated as time-vary...
Read moreAn empirical model used to standardize data on root investigations was P = 100 (1-e-fx) where P was the percentage of roots in x cm of soil, and f was...
Read moreComparisons were made of three micrometeorological models which simulated daily rates of photosynthesis and transpiration in a maize crop. A complete ...
Read moreA framework that incorporates product differentiation under monopolistic competition applies primarily to the manufacturing industry, and agriculture ...
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...
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