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Theoretical analysis of a simple model, in which tree growth in even-aged stands is calculated as the product of unit leaf rate (E, increase in plant ...
Read moreA model of a 2 life-stage pest species is presented for determining the feasibility of control by means of predator release, habitat management and pe...
Read moreEnvironmental risk assessment of contaminants is conventionally based on toxic effects assessed in organism-level test systems. We suggest that, for t...
Read moreEffects of intraspecific competition in Callosobruchus maculatus and C. rhodesianus on cowpeas were studied in the laboratory in order to predict whet...
Read more1. Ensuring that inferences from biological monitoring are reliable requires a level of sampling effort that is commensurate with programmatic objecti...
Read moreAraneae were collected using pitfall traps and absolute density sampling over a period of 6 months in a field of winter wheat in the UK. The numerical...
Read moreThe intensification of agriculture has resulted in the decline of many plant species of nutrient-poor wet grasslands. At some sites local populations ...
Read morePopulation density is fundamental information for assessing the conservation status of species and support management and conservation actions for in ...
Read moreMany animal species are detected primarily by sound. Although songs, calls and other sounds are often used for population assessment, as in bird point...
Read moreAlthough research has focused on density-dependent responses of hosts to single-parasite infections, hosts are exposed to numerous parasites simultane...
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