Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Donald B. Lawrence"'
Publikováno v:
Soil Biology and Biochemistry. 26:623-632
The role of both actinorhizal and leguminous N 2 -flxing plants during primary succession within glacial forelands has received much attention, but there are few estimates of the contribution of fixed N to neo-glacial substrates. The main objectives
Autor:
David K Yamaguchi, Donald B. Lawrence
Publikováno v:
Bulletin of Volcanology. 55:264-272
Until the 18 May 1980 eruption of Mount St. Helens, a debris fan and adjacent forest downslope from the dacitic Goat Rocks dome, on the north flank of the volcano, contained evidence that the dome was active in 1842 or 1843. The fan was destroyed by
Publikováno v:
Bulletin of Volcanology. 52:545-550
Anomalously narrow and missing rings in trees 12 m from Mount St. Helens' “floating island” lava flow, and synchronous growth increases in trees farther from the flow margin, are evidence that this andesitic flow was extruded between late summer
Publikováno v:
Ecology. 44:52-63
Publikováno v:
Annals of the New York Academy of Sciences. 95:341-350
Publikováno v:
Ecology. 52:55-69
Eight sites of known age were sampled in Glacier Bay National Monument, Alaska, to examine the changes in plant diversity during primary succession in that region. Four strata–trees, tall shrubs, low shrubs—herbs, and bryoid—thalloids–were sa
Autor:
Donald B. Lawrence, Leland S. Jahnke
Publikováno v:
Ecology. 46:319-326
Productivity studies have shown that plants with marked vertical extension of photosynthetic crown can be more productive per unit area of land or water occupied than plants whose photosynthetic surface is spread in a thin horizontal sheet on the ear
Autor:
Donald B. Lawrence
Publikováno v:
Economic Botany. 32:106-108
Autor:
Lee K. Paulsell, Donald B. Lawrence
Publikováno v:
Ecology. 44:146-148
Autor:
Donald B. Lawrence
Publikováno v:
American Journal of Botany. 36:426-427