Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 8 of 8 for “"Forest plants"”.
-
Floral traits and pollination of Solidago altissima: mechanisms of local adaptation among and within biomes
… into two subspecies in the prairie and forest biomes in Minnesota. The mechanisms that have driven the divergent evolution of these subspecies are not well understood. The evolution of floral traits is influenced by the trade-off between sexual and asexual reproduction. Floral traits can …
-
Plant Community Development of Isle Royale's Moose-Spruce Savannas
… gradually resulting in a shift towards more open forests and savannas. By 1996, 16% of the forests at the southwest end of Isle Royale had become savanna and another 20% were starting to break-up. The changes in understory vegetation brought about by savanna formation have received little …
-
Environmental, spatial and temporal drivers of plant community composition in British forest habitat
Broadleaved forest habitat is important for a number of ecosystem functions and as a refuge for many rare plant species in human-modified landscapes. It is however, threatened by global change drivers such as deforestation and the associated fragmentation of remaining habitat areas, along with …
-
Holocene environments and vegetational change on four Polynesian islands
… fernlands. However, declines in several primary forest plants, previously associated with anthropogenic deforestation, appear to have resulted from natural causes during pre-settlement times. The presence of coconut pollen in two of the lake sequences, dated at -8600 yr BP in Atiu and prior to …
-
Mortality of native forest vegetation in the Kaimai ranges
… 40 years and affects a wide range of species and forest types. The mortality occurs above 550 m altitude and on each prominence has a lower limit which corresponds closely with the predominant cloud zone in each area. The severity of the damage ranges from complete mortality of canopy species to a …