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The aquatic plants in this study were Ruppia spp. which occur at shallow depths, Chara spp. at intermediate depths and Potamogeton pectinatus, Myrioph...
Read moreIntraspecific variation in susceptibility to simazine was examined in 46 different populations of Senecio vulgaris collected from various fruit growin...
Read morePlants of Holcus lanatus and Lolium perenne were grown in monoculture and in a 50:50 mixture in free-draining conditions and with the water table at 5...
Read moreThe reproductive efforts of Rumex crispus and R. obtusifolius were studied in different habitats. The probability of flowering in R. crispus was corre...
Read moreCollembola and Acarina populations were sampled over two years from sites fertilized with three levels of superphosphate (0, 190, 380 kg ha-1yr-1) and...
Read moreObservations were made on sugar beet fields in Cambridgeshire and West Suffolk, UK, in April-May 1977 and 1978 from emergence of seedlings until they ...
Read moreTo test the hypothesis that ectoparasitic phytophagous nematodes are a major consumer of primary production in arid grasslands, carbofuran was applied...
Read moreAfter 2 trials in late winter 1973-4, 6 main experiments were conducted over the winter periods of 1974-5 and 1975-6 to determine the loss of herbage ...
Read moreIn 1911 and 1925, reindeer (Rangifer tarandus) were introduced to the subantarctic island of South Georgia where there is a sp.-poor vascular flora an...
Read moreFactors influencing the food intake of reindeer (Rangifer tarandus tarandus) on tundra were studied using tame animals. Food intake was estimated from...
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