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A heat-labile substance toxic to nitrite-oxidizing bacteria was present in the outer tissues of roots of Hyparrhenia filipéndula; in the summer (Nov.-...
Read moreExtracts of the roots of Hyparrhenia filipéndula and other grasses were tested against soil enrichment cultures of NH3-and NO2 oxidizers, by measuring...
Read moreA passive haemagglutination inhibition (PHI) test for the identification of stomach contents of invertebrate predators is described. When used in a sy...
Read moreMathematical parameters were fitted to a 2-species competition model [H.A. 32: 1572] and a statistical test for the hypothesis that the species are co...
Read moreRoots of Hyparrhenia filipéndula contained a water-soluble, heat-labile and dialysable substance which inhibited nitrifying bacteria. Alcohol extracts...
Read moreA heat-labile substance in surface sterilized pieces of Hyparrhenia filipendula roots was toxic to nitrite oxidizers in a soil enrichment culture; it ...
Read moreChanges in media composition were monitored during conditioning by B. tropicus, B. truncatus, B. globosus and Biomphalaria glabrata maintained under a...
Read moreMathematical parameters were fitted to a 2-species competition model and a statistical test for the hypothesis that the species are competing for the ...
Read morePollen from beech (Fagus sylvatica) trees about 100 yr old, belonging to different damage (forest decline) classes in a wood at Pian di Novello, centr...
Read moreWoody plant encroachment of grasslands is occurring globally, with profound ecological consequences. Attempts to restore herbaceous dominance may fail...
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