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A 'simulator' is described, which integrates measurements of light intensity within a forest canopy in order to estimate the total amount of CO2 fixed...
Read moreIn T. canadensis forests in Wisconsin, Acer saccharum rapidly replaced T. canadensis when both were heavily browsed by deer. However, regeneration of ...
Read moreThe upper limit to the number of mice was estimated at 36 mice/ha when 860 000 Douglas fir seeds/ha were taken. Additional seeds did not result in fur...
Read moreSeed longevity and germination in various situations were examined in Rumex crispus and R. obtusifolius. The % germination of both spp. was significan...
Read moreThe association between seeds of Abutilon theophrasti, Datura stramonium, Ipomoea hederacea and Polygonum pensylvanicum and their mycoflora was examin...
Read moreFrequencies of 207 weed species were recorded in 466 fields of 19 different crops in Denmark. The data were subjected to cluster and factor analyses, ...
Read moreAnthoxanthum odoratum, Holcus lanatus, Hypochoeris radicata, Lolium perenne, Plantago lanceolata and Rumex acetosa (i.e. 'treatment' species) were gro...
Read moreAchenes of 7 species of Carduus, Cirsium and Onopordum were collected in August-September and mixed with the top 2.5 or 7.5 cm of soil which was then ...
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