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In a study on the distribution of weed seeds in soil, seeds of lucerne and oilseed flax, which differ markedly in size, shape and seed-coat properties...
Read moreThis paper presents the details of the survey area 31 Watch Croft, Trevean, White Downs, and Bosullow Common in Cornwall, England. The site was survey...
Read moreFollowing an introduction the topic of past human population is explored focusing on population size and growth, economic growth and increasing econom...
Read moreVariation in low temp. growth of several types of white clover collected in N. Britain and sites where low temp. adapted white clover plants may be fo...
Read moreYoung plants of maize and cotton grown in sand culture were kept at 1 site either during the day or night, and placed during the remainder of each day...
Read moreAround Scolt Head Island, N. Norfolk 43.7%, 57.7% and 65.5% of the cumulative total number of observations of brent geese (Branta b. bernicla) were ma...
Read moreDescribes a method for estimating the income of K, Mg, Ca, P and Na to a woodland ecosystem in the airborne particles caught by the tree canopy, and g...
Read moreClimate and soil factors influencing the distribution of annual legume species collected at 207 sites throughout Syria were investigated by cluster an...
Read moreDensities of upland geese and ruddy-headed geese were determined for a variety of 'natural' pastures in the Falkland Islands. Herbage consumption by g...
Read moreModels are presented for determining the feasibility of population control by releasing sterilants and pesticides, singly or in combination, into the ...
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