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The following is virtually the author's summary of this account of observations in Scotland [cf. RAE A 54 678; 59 1153, 2160]. A sycamore tree kept un...

More than a century of forest management, including fire exclusion, livestock grazing and tree harvesting, may have affected forest structure and comp...

The desert locust is a migratory pest whose population development in remote areas must be monitored to prevent outbreaks, upsurges and plagues. Monit...

A severe outbreak of Mythimna convecta throughout the cereal growing regions of eastern Australia commenced in spring 1983, 6 months after the conclus...

Wet and dry bulb temperatures and run of wind were measured over irrigated Gossypium herbaceum cv. BAR XL 1 at various heights and distances from the ...

The ability of Harpalus rufipes (Deg.) to feed on aphids was studied in the laboratory in the UK and compared with evidence of predation on aphids in ...

Land clearing for irrigated agriculture in the Sudan clay plains is urgently needed because the Roseires Dam is to be completed in 1967. Two different...

Although invasions by alien plants are major threats to the biodiversity of natural habitats, individual habitats vary considerably in their susceptib...

Detailed floristic records from 12 mires on 3 Suffolk fens were gathered in 1959 and 1991. The data were analysed using tabulation and ordination to e...

The influence of annual and seasonal (summer vs. winter) rainfall variability and of different seasons and systems of sheep grazing, including complet...