Tree species composition and diversity gradients in white
... Amazonian floodplain forests normally contain fewer tree species than their non-flooded counterparts of the same region (Prance, 1979; Balslev et al., 1987). This is because the duration and height of flooding influence the ecophysiology of trees, and result in the trees adapting to the periodically ...
... Amazonian floodplain forests normally contain fewer tree species than their non-flooded counterparts of the same region (Prance, 1979; Balslev et al., 1987). This is because the duration and height of flooding influence the ecophysiology of trees, and result in the trees adapting to the periodically ...
biomes Part2 - Fulton County Schools
... • Other animals, such as mammals and insects, reduce their activity so that they do not need as much food for energy, enabling them to survive the winter. ...
... • Other animals, such as mammals and insects, reduce their activity so that they do not need as much food for energy, enabling them to survive the winter. ...
Riparian Management along Headwater Streams in Coastal British
... following forest harvesting in headwater basins, even with 30-m reserves. We need to ask how much change, and at what scale, is unacceptable or will not recover in a “reasonable” time frame. Even two- to fivefold increases in algae biomass may only persist until the regenerating stand produces enoug ...
... following forest harvesting in headwater basins, even with 30-m reserves. We need to ask how much change, and at what scale, is unacceptable or will not recover in a “reasonable” time frame. Even two- to fivefold increases in algae biomass may only persist until the regenerating stand produces enoug ...
Biomes of the World Unit Assessment
... 35. What is the difference between a deciduous forest biome and the taiga biome? • Dominated by climax communities of deciduous trees which lose their leaves in the fall – Eastern United States; a cold forest region dominated by cone-bearing evergreen trees – largest biome lies just below the tundr ...
... 35. What is the difference between a deciduous forest biome and the taiga biome? • Dominated by climax communities of deciduous trees which lose their leaves in the fall – Eastern United States; a cold forest region dominated by cone-bearing evergreen trees – largest biome lies just below the tundr ...
How does forest landscape structure explain tree species richness
... Mitchell et al. 2006; Simmering et al. 2006). Besides, several studies have evaluated how configuration indices can contribute to explain biodiversity distribution, with forest landscape fragmentation being considered in some cases a major determinant of biodiversity loss (see Forman 1995; Fahrig 20 ...
... Mitchell et al. 2006; Simmering et al. 2006). Besides, several studies have evaluated how configuration indices can contribute to explain biodiversity distribution, with forest landscape fragmentation being considered in some cases a major determinant of biodiversity loss (see Forman 1995; Fahrig 20 ...
Major Ecosystems of the World
... A forest biome that occurs in temperate areas with a moderate amount of precipitation • Hot summers and cold winters • Precipitation ranges from about 75 to 150 cm annually • Topsoil rich in organic material • A deep clay-rich lower layer • Organic materials decay mineral ions are released ions ...
... A forest biome that occurs in temperate areas with a moderate amount of precipitation • Hot summers and cold winters • Precipitation ranges from about 75 to 150 cm annually • Topsoil rich in organic material • A deep clay-rich lower layer • Organic materials decay mineral ions are released ions ...
Does natural selection organize ecosystems for the maintenance of
... as the fragment averaged 55 tree species apiece (Kellman et al. 1994). Moreover, ‘edge effects’ in these natural fragments are minimal, compared with those in fragments recently isolated by human activity. Newly arrived human hunters with stone-tipped weapons killed off Beringia’s mammoths and other ...
... as the fragment averaged 55 tree species apiece (Kellman et al. 1994). Moreover, ‘edge effects’ in these natural fragments are minimal, compared with those in fragments recently isolated by human activity. Newly arrived human hunters with stone-tipped weapons killed off Beringia’s mammoths and other ...
Gringos en el bosque: introduced tree invasion in a
... individuals of these species in 30 ha of forest in two series of transects at increasing distances from the plantations. Although these species included many reported as highly invasive elsewhere, we found little evidence for invasion on Isla Victoria, with many ‘invasive’ species utterly failing to ...
... individuals of these species in 30 ha of forest in two series of transects at increasing distances from the plantations. Although these species included many reported as highly invasive elsewhere, we found little evidence for invasion on Isla Victoria, with many ‘invasive’ species utterly failing to ...
Tree species Diversity and Regeneration of Tropical Dry Forests in
... diversity in seed bank behaviour not only indicates how variation in form, intensity, and seasonal distribution of habitat disturbance facilitates complementary forms of regeneration, but it also provides a basis for manipulations of species composition by shifting the opportunities for seedling est ...
... diversity in seed bank behaviour not only indicates how variation in form, intensity, and seasonal distribution of habitat disturbance facilitates complementary forms of regeneration, but it also provides a basis for manipulations of species composition by shifting the opportunities for seedling est ...
suitable cavities as a scarce resource for both cavity and non
... distribution of tree age classes, the extent of old-growth stands and the availability of dead wood (Cumming et al., 1994; Hagan et al., 1997). The change in age class distribution towards younger age classes along with the loss of old forest stands and a decrease in the number of snags and old tree ...
... distribution of tree age classes, the extent of old-growth stands and the availability of dead wood (Cumming et al., 1994; Hagan et al., 1997). The change in age class distribution towards younger age classes along with the loss of old forest stands and a decrease in the number of snags and old tree ...
Longleaf pine ecosystem - Digital Commons@Georgia Southern
... Longleaf forests are one of the most biologically diverse ecosystems in the world. On average, one can expect to find over 100 plant species in a quarter-acre, and over 500 species have been recorded in single tracts of longleaf forests. Since many plants are endemic to this ecosystem, several are ...
... Longleaf forests are one of the most biologically diverse ecosystems in the world. On average, one can expect to find over 100 plant species in a quarter-acre, and over 500 species have been recorded in single tracts of longleaf forests. Since many plants are endemic to this ecosystem, several are ...
news16-8-9
... population exposed to seismic-related hazards ranges from 30% (Kazakhstan) to 100% (Kyrgyzstan). New methods are needed to anticipate, forecast, and warn people of future threats, risks and hazards. A comprehensive and systematic approach must be implemented. Glacial meltwater influences volume, tim ...
... population exposed to seismic-related hazards ranges from 30% (Kazakhstan) to 100% (Kyrgyzstan). New methods are needed to anticipate, forecast, and warn people of future threats, risks and hazards. A comprehensive and systematic approach must be implemented. Glacial meltwater influences volume, tim ...
Can the pre-Neolithic provide suitable models for re
... oaks and Hazel thrived in the primeval landscape because there were large open areas for regeneration and because grazing animals reduced competition from more shade-tolerant species such as Beech Fagus sylvatica. What may be underplayed is the influence of soil conditions and topography on the shad ...
... oaks and Hazel thrived in the primeval landscape because there were large open areas for regeneration and because grazing animals reduced competition from more shade-tolerant species such as Beech Fagus sylvatica. What may be underplayed is the influence of soil conditions and topography on the shad ...
Distance from Edge Determines Fruit
... communities derives largely from study of vertebrate species, especially birds and their nest predators (e.g., see references in Ries et al. 2004). Much less is known about the impact of edges on arthropod communities even though arthropods are superlative ecological indicators because of their enor ...
... communities derives largely from study of vertebrate species, especially birds and their nest predators (e.g., see references in Ries et al. 2004). Much less is known about the impact of edges on arthropod communities even though arthropods are superlative ecological indicators because of their enor ...
Tropical forest loss and its multitrophic effects on insect herbivory
... effect may even be stronger in tropical regions (Coley and Barone 1996). Thus, this ecological process is a key driver of forest ecosystem functioning, once leaf consumption by herbivores affects tree growth, it will start negatively affecting tree health and fecundity, inhibiting regeneration and m ...
... effect may even be stronger in tropical regions (Coley and Barone 1996). Thus, this ecological process is a key driver of forest ecosystem functioning, once leaf consumption by herbivores affects tree growth, it will start negatively affecting tree health and fecundity, inhibiting regeneration and m ...
Spatial patterns in the tropical forest reveal connections
... units. However, in any attempt to compare the statistical features of patterns observed for two (or many) different species, that may have different abundance in the plot, the question of "natural" scale immediately arises. The use of an objective measure, like meters, is natural when the shortrange ...
... units. However, in any attempt to compare the statistical features of patterns observed for two (or many) different species, that may have different abundance in the plot, the question of "natural" scale immediately arises. The use of an objective measure, like meters, is natural when the shortrange ...
Effects of Small Forest Openings on the Breeding Bird Community in
... Neotropical migrants in part because of immigration from nearby source populations (Askins and Philbrick 1987, Robinson 1992) and may be population sinks for many species (Robinson 1992, Donovan et al. 1995). Neotropical forest-interior migrants in large forest tracts are not invulnerable to the eff ...
... Neotropical migrants in part because of immigration from nearby source populations (Askins and Philbrick 1987, Robinson 1992) and may be population sinks for many species (Robinson 1992, Donovan et al. 1995). Neotropical forest-interior migrants in large forest tracts are not invulnerable to the eff ...
Forest Floor Vegetation in Sweden - Epsilon Open Archive
... In boreal forests, dwarf-shrubs (Vaccinium spp.) often dominate the forest floor and are key-stone species in ecosystems due to their importance for nutrient cycling and as a major food source for herbivores. Forestry affects the vegetation both directly through management and indirectly by altering ...
... In boreal forests, dwarf-shrubs (Vaccinium spp.) often dominate the forest floor and are key-stone species in ecosystems due to their importance for nutrient cycling and as a major food source for herbivores. Forestry affects the vegetation both directly through management and indirectly by altering ...
The Deciduous Forest Boreal Forest Ecotone
... as global factors such as biodiversity loss and dynamics of the carbon cycle. This review summarizes what is known about the location, controlling mechanisms, disturbance regimes, anthropogenic impacts, and sensitivity to climate change of the deciduous forest – boreal forest ecotone. ...
... as global factors such as biodiversity loss and dynamics of the carbon cycle. This review summarizes what is known about the location, controlling mechanisms, disturbance regimes, anthropogenic impacts, and sensitivity to climate change of the deciduous forest – boreal forest ecotone. ...
Premature decline of Eucalyptus and altered ecosystem processes
... drift away from eucalypts involved the death of trees by intense fire or old age, but not through premature decline and mortality. However, eucalypts can be replaced prematurely (in terms of their potential life-span) by rainforest species that can regenerate in the absence of fire in wet, temperate ...
... drift away from eucalypts involved the death of trees by intense fire or old age, but not through premature decline and mortality. However, eucalypts can be replaced prematurely (in terms of their potential life-span) by rainforest species that can regenerate in the absence of fire in wet, temperate ...
Ecological Components of Endangered Forests
... per year and rising, and the average consumption rate is 0.55 cubic meters per person per year. Per capita wood use in most developed countries is much higher (e.g., 2.1 cubic meters per person per year in the U.S.).10 Demand for fuelwood and charcoal is expected to increase at a rate of approximate ...
... per year and rising, and the average consumption rate is 0.55 cubic meters per person per year. Per capita wood use in most developed countries is much higher (e.g., 2.1 cubic meters per person per year in the U.S.).10 Demand for fuelwood and charcoal is expected to increase at a rate of approximate ...
Report Under the Cover of the Swedish Forestry Model
... will launch the International Year of Forests2, only 5 per cent of Swedish forests with very high nature conservation values, known as core sites, remain below the montane region.3 2011 is also a year when many natural forests with documented4 high biodiversity values in Sweden are at very high risk ...
... will launch the International Year of Forests2, only 5 per cent of Swedish forests with very high nature conservation values, known as core sites, remain below the montane region.3 2011 is also a year when many natural forests with documented4 high biodiversity values in Sweden are at very high risk ...
Spatial distribution patterns of the dominant canopy dipterocarp
... Panama plot data, showed that density-dependence was much more common than originally believed. As with habitat specialization, most studies of spatial association among tropical forest species have been either in aseasonal or neotropical forests. No such studies exist for the seasonal forests of tr ...
... Panama plot data, showed that density-dependence was much more common than originally believed. As with habitat specialization, most studies of spatial association among tropical forest species have been either in aseasonal or neotropical forests. No such studies exist for the seasonal forests of tr ...
"Taiga" pdf file
... extremely old nomadic people which support themselves only on reindeer rearing, its population now just 180. These people live off a symbiotic relation with their animals, so much so that the Mongolians named them Tsaatan, i.e. reindeermen, from tang, people, and Tsaa Buga, snow deer; while they cal ...
... extremely old nomadic people which support themselves only on reindeer rearing, its population now just 180. These people live off a symbiotic relation with their animals, so much so that the Mongolians named them Tsaatan, i.e. reindeermen, from tang, people, and Tsaa Buga, snow deer; while they cal ...
Forest vegetation in western Romania in relation to climate variables
... Kuzyakov Y., Leuschner Ch., Petritan A.M., Teodosiu M., 2016. Forest vegetation in western Romania in relation to climate variables: Does community composition reflect modelled tree species distribution? Ann. For. Res. 59(2): 219-236. Abstract. European beech (Fagus sylvatica L.) is the prevailing t ...
... Kuzyakov Y., Leuschner Ch., Petritan A.M., Teodosiu M., 2016. Forest vegetation in western Romania in relation to climate variables: Does community composition reflect modelled tree species distribution? Ann. For. Res. 59(2): 219-236. Abstract. European beech (Fagus sylvatica L.) is the prevailing t ...
Old-growth forest
An old-growth forest (also termed primary forest, virgin forest, primeval forest, late seral forest, or in Britain, ancient woodland) is a forest that has attained great age without significant disturbance and thereby exhibits unique ecological features and might be classified as a climax community. Old-growth features include diverse tree-related structures that provide diverse wildlife habitat that increases the bio-diversity of the forested ecosystem. The concept of diverse tree structure includes multi-layered canopies and canopy gaps, greatly varying tree heights and diameters, and diverse tree species and classes and sizes of woody debris.Old-growth forests are economically valuable, and logging of these forests has been a point of contention between the logging industry and environmentalists.