Biogeography ; Ecology ; Ecosystem ; Forest ; Habitat ; Photosynthesis ; Tree species ; Tropicalrainforest
The A. reviews the mainstream ecological literature from 1994 to 1995 to gauge the importance of ecophysiological studies in understanding the ecology of tropicalrainforests.
The A. reports on the progress in describing and explaining variation of biodiversity in tropicalrainforests. He bases this review on a search of the 1997 editions of Ecology Abstracts, Ecological Abstracts and Forestry Abstracts.
An appreciation of time on a variety of scales may help explain the complexity of tropicalrainforests and provide a frame of reference to consider the consequences of anthropogenic deforestation and global climatic change on this biome. Here
the A. reviews published tropicalrain-forest research that has focused on the time dimension from late 1992 until early 1994.
The A. briefly reviews major themes in published tropicalforest research between 1991 and 1992 inclusive in an attempt to identify what questions are believed to be important.
The main thrust of the recent publications has been in the broad area of rainforest structure (including species richness) and dynamics although there have been substantial advances also in rainforest plant ecophysiology, plant soil relation ships
The following review (1987-1989) covers seven areas of study : microclimate, climate and vegetation change| hydrology| mineral nutrition| forest structure| forest regeneration| herbivory| conservation.
Forty years of rainforest ecology 1948-1988 in perspective
The main fields of research in tropicalrainforest ecology today are briefly described and the development of the subject over the past forty years is outlined.
Tropicalrainforest and climate dynamics of the Atlantic lowland, southern Brazil, during the late Quaternary
Brazil ; C 14 dating ; Palaeo-environment ; Palaeoclimate ; Palynology ; Pleistocene ; Pollen diagram ; Quaternary ; Santa Catarina ; Stratigraphy ; Tropicalrainforest
The AA. present results of an investigation into past vegetation and climate in the southern Atlantic rainforest region, using pollen and radiocarbon analysises of recently discovered late Pleistocene deposits at Volta Velha, Santa Catarina, Brazil.
In this article the use of the term secondary forest is restricted to forests which have reoccupied a site after clearance. The literature on tropicalforest succession is reviewed, showing the importance of the type, intensity and scale
of the disturbance, the nature of the surrounding landscape and the composition of the surviving disperser fauna. The value of tropical secondary forests is compared to primary forest, with regards to regulatory function, commercial value and conservation
The area of the tropicalforests has been shrinking fast in the last decades and, moreover, considerable parts of the remaining natural forests are in a process of degradation, mainly due to overexploitation, intensified pasture farming and frequent
fires. This process of decline in large parts of the tropicalforest belt concerns more and more the public and politicians in the industrialized countries as well as increasingly also in parts of the developing countries. - (L'A.).
Here, the AA. present the first modern pollen-rain data for tall terra firme moist evergreen Amazon forest, collected between 1999 and 2001 from artificial pollen traps in Noel Kempff Mercado National Park (NE Bolivia). Spearman's rank correlations
were performed to assess the extent of spatial and inter-annual variability in the pollen rain, whilst statistically distinctive data were identified using Principal Components Analysis (PCA). Comparisons which the floristic and basal area data
of the plot enabled the degree to which taxa are over/under-represented in the pollen rain to be assessed.
Geomorphological studies on the Late Quaternary landscape evolution in areas of eastern Zaire indicated by pedological, sedimentological, and geochemical evidence that the recent rainforest of the region within the glacial core-areas was strongly