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Butterflies are one of the few insect groups that can be monitored effectively and have the potential to develop national and Europe-wide trends in ab...
Read moreA mathematical model of the dynamics of a virus disease in a perennial plant population was developed. The population was divided into healthy, latent...
Read moreThree successive generations of Spodoptera exempta (Wlk.) were observed on cereal crops and grasses at Salisbury Research Station, Rhodesia, during Ja...
Read moreIncrement core samples at b.h. were taken from 15 trees in each of 7 stands (aged 22-68 yr) in North Zealand, Denmark, in Oct.-Nov. 1984. Radial incre...
Read morePollinators are a functional group with high relevance for ensuring cross-pollination in wild plant populations and yields in major crops. Both pollin...
Read moreThe viable weed seed content of the surface soil at 78 sites in the upper Belize Valley, British Honduras, averaged 6488 seeds/m2 and included 54 spec...
Read moreIn order to investigate the effect of insect recolonization on the insecticide-induced resurgence of crop pests, a modified Lotka-Volterra predator-pr...
Read moreTrifolium balansae and T. resupinatum are new to self-regenerating pastures. A model, based on data obtained from field measurements, was used to pred...
Read more1. Natural flow regimes play important roles in maintaining the ecological integrity and diversity of aquatic ecosystems. Wildlife has adapted over ti...
Read moreClimate over Asian montane rangelands is changing faster than the global average, posing serious threats to the future of the region's livestock-based...
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