| local variations in microfungal populations on pinus sylvestris needles. | we studied the fungal colonization of pinus sylvestris needles in two neighbouring sites, comparing stands of isolated and grouped trees. we observed large variations among the proportions of needles bearing fruit bodies of cyclaneusma minus, lophodermium pinastri, verticicladium trifidum and black lines characteristic of l. pinastri colonization. variations between sites and within trees were greater than that between stands or between trees. the frequency of l. pinastri colonization was negati ... | 2003 | 14635770 |