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Seed longevity and germination in various situations were examined in Rumex crispus and R. obtusifolius. The % germination of both spp. was significan...
Read moreThere is an increasing awareness of the need to evaluate critically the effectiveness of environmental conservation measures, and to ensure that agri-...
Read moreDensity-dependent mortality was shown to occur among the parasitic stages of Boophilus microplus (Can.) on European and Zebu X European breeds of catt...
Read moreThe most broadly applied generalizations of bioeconomics were derived from simple, non-spatial models. We develop a simple continuous spatial model in...
Read moreThe abundance of several species of Forcipomyia, known to be pollinators of cacao, increased markedly in 1 cacao farm in Costa Rica when discs of rott...
Read moreThe structural dynamics of the growth of Betula pendula were examined using demographic techniques in which elements of the crown (buds, leaves, shoot...
Read moreA quantitative approach to estimating the effects of potential closed areas on fish spawning biomass and yields is presented. The focus for evaluation...
Read moreAn increase in pesticide resistance in many pest species is promoting interest in biological control. Much remains to be learned about natural enemy i...
Read moreRelationships between red-winged blackbirds (Agelaius phoeniceus) and the chrysomelid Diabrotica longicornis were studied in field maize in Cayuga Cou...
Read moreA common prediction based on ecological theory is that natural populations of insect predators will be more abundant and effective in diverse plant as...
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