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The cage aquaculture of rainbow trout, Salmo gairdneri Richardson, enriched the mesotrophic Glebokie Lake in Poland with carbon, phosphorus and nitoge...

Maize, beans (Phaseolus vulgaris) and squash (Cucurbita maxima) were grown in pure stands and mixtures for 3 seasons in Costa Rica. Vegetative biomass...

A non-destructive stain technique for quantifying root growth was developed. Red, blue and yellow chlorotriazinyl dyes are individually applied as a s...

Long-term observations of eta , the ratio of PAR to total solar radiation, are reported for Dar es Salaam (7 deg S.). The records for very clear perio...

Estimates of damage to maize by individual red-winged blackbirds (Agelaius phoeniceus) were derived from energetics and life history information and i...

Seeds of Bromus sterilis overwintered outdoors on the panicle were dormant the following spring, whereas seeds stored indoors germinated rapidly. The ...

Populations of deer mouse, Oregon vole, Townsend chipmunk and shrew were examined before and after the application of glyphosate in a 20-yr-old planta...

Growth characteristics and response to atrazine were studied in atrazine resistant (R) and susceptible (S) populations of Amaranthus retroflexus and A...

Senescence and death of plant parts are frequently accelerated by various stresses to which plants are subjected. The dynamics of these responses can ...

The salinity tolerance of P. macrourum was determined in order to define its potential habitats in the Derwent River estuary of S. Tasmania. NaCl and ...