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Sexual reproduction in 9 clones of Eichhornia crassipes from different parts of the world was examined in the glasshouse. Eight of the clones flowered...

The numbers of Sinapis arvensis plants in 3 permanent quadrats in an arable field were examined over 3 years. Plant size was positively correlated wit...

Part of a drainage channel was treated with cyanatryn at 0.2 mu g/g. Release of the herbicide was slower than expected. A peak concn. of 0.1 mu g/g wa...

In November 1970 the acidity of Calthorpe broad in Norfolk, and some adjacent ditches, changed abruptly from near-neutrality to just above pH 3. Most ...

Leaves of oak (Quercus robur) were confined in nylon bags of three mesh sizes, and buried from July until February on four recently reclaimed coal pit...

The soil fauna colonizing four reclaimed coal pit heap sites at different stages of reclamation in Northumberland, England, were sampled monthly for 2...

A soil sieving machine developed from a commercial concrete mixer is described. The machine is suitable for use with a wide range of fresh soils.

Germination and early seedling growth of Pinus contorta and Picea glauca were examined in distilled water (pH 6.3) (control), eight acidic buffer solu...

Samples of a moss (Hypnum cupressiforme) and of two lichens (Hypogymnia physodes, Lecanora conizaeoides) were collected from the trunks of beech (Fagu...