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Changes in the distribution, frequency and abundance of 3 forms of the weed Chondrilla juncea in south-eastern Australia are documented for the period...

The distribution of Urophora affinis (Frnf.) and U. quadrifasciata (Wied.) among the flower heads of diffuse (Centaurea diffusa) and spotted (C. macul...

Parasitoids often are selected for use as biological control agents because of their high host specificity, yet such host specificity can result in st...

A citrus orchard at Nelspruit, South Africa, was pruned back to the main branches to stimulate the growth of new shoots, which are highly attractive t...

In the early 1990s, birch (Betula pubescens) forests in north-western Norway were damaged by the bud- and shoot-mining larvae of Argyresthia retinella...

The number of migratory geese spending winter and early spring in the Netherlands increased from 100 000 in the early 1960s to almost 600 000 in the 1...

There are many arthropod species on farmland that are not economic pests but which have an important role in the wider ecology of agricultural ecosyst...

The following are virtually the author's summaries of these parts of a series on observations in central England [cf. RAE A 57 7969].
Following the us...

Anaitis efformata [Aplocera efformata], a potential biological control agent for St. John's wort (Hypericum perforatum) in south-eastern Australia, wa...

Life tables for Anaitis efformata [Aplocera efformata], a potential control agent for St. John's wort (Hypericum perforatum), were obtained by followi...