The Nature and Value of Biodiversity
... Species diversity refers to the variety of species within a region. Such diversity can be measured in many ways, and scientists have not settled on a single best method. The number of species in a region – its species “richness” – is one often-used measure, but a more precise measurement, “taxonomic ...
... Species diversity refers to the variety of species within a region. Such diversity can be measured in many ways, and scientists have not settled on a single best method. The number of species in a region – its species “richness” – is one often-used measure, but a more precise measurement, “taxonomic ...
Using Plantations to Catalyze Tropical Forest Restoration
... Monoculture tree plantations using exotic species have been established worldwide to provide wood and to alleviate pressure on remaining blocks of natural forest. Increasing interest in biodiversity has called into question the extensive use of non-native species and has highlighted the ecological d ...
... Monoculture tree plantations using exotic species have been established worldwide to provide wood and to alleviate pressure on remaining blocks of natural forest. Increasing interest in biodiversity has called into question the extensive use of non-native species and has highlighted the ecological d ...
Grazing behaviour, habitat use and diet selection of domestic
... the pastures every day, while the frequency of visiting typical graminoid or herb dominated habitats varied daily dependent on herder. No differences between cows and dzomos were found in diet selection, their diet consisted of approximately 35 % herbs and 65 % graminoids and indicate potential inte ...
... the pastures every day, while the frequency of visiting typical graminoid or herb dominated habitats varied daily dependent on herder. No differences between cows and dzomos were found in diet selection, their diet consisted of approximately 35 % herbs and 65 % graminoids and indicate potential inte ...
Plan - Tree Pittsburgh
... planting nearly 3,500 street trees to absorb rain and reduce and slow stormwater runoff. restoring natural areas in the basin by removing invasive vegetation and introducing native plants. working with private property owners to construct facilities that will collect and manage roof and parking lot ...
... planting nearly 3,500 street trees to absorb rain and reduce and slow stormwater runoff. restoring natural areas in the basin by removing invasive vegetation and introducing native plants. working with private property owners to construct facilities that will collect and manage roof and parking lot ...
Ecosystem services and dis-services to agriculture ⁎, Taylor H. Ricketts Wei Zhang
... Asian steppe and the South American pampas are all located on deep topsoil with high organic matter and good water holding capacity. Farmers chose these locations because flows of ES to agriculture made them potentially more profitable than elsewhere. ES to agriculture affect not only the location a ...
... Asian steppe and the South American pampas are all located on deep topsoil with high organic matter and good water holding capacity. Farmers chose these locations because flows of ES to agriculture made them potentially more profitable than elsewhere. ES to agriculture affect not only the location a ...
Measuring Farmland Biodiversity
... species with conservation status, but there is no consistent information on the status of more common species, despite the fact that these, to a great extent, are what interact with farming practices, providing services or causing damage.5 Farmland birds and butterflies are monitored at the landscap ...
... species with conservation status, but there is no consistent information on the status of more common species, despite the fact that these, to a great extent, are what interact with farming practices, providing services or causing damage.5 Farmland birds and butterflies are monitored at the landscap ...
Rangeland degradation in Ordos Plateau, its nature and assessment
... Once rangeland has been degraded, it is often possible to rehabilitate it and thus r estore it to a level of utility, possibly not as good as its original state, but better than it was in its damaged state (Ludwig and Tongway 2000; Thurow 2000). Given satisfa ctory perception of the threat, funding, ...
... Once rangeland has been degraded, it is often possible to rehabilitate it and thus r estore it to a level of utility, possibly not as good as its original state, but better than it was in its damaged state (Ludwig and Tongway 2000; Thurow 2000). Given satisfa ctory perception of the threat, funding, ...
Chestnut Blight Endothia parasitica
... the east coast of Africa to feed the Italian army, which was invading Ethiopia at the time Quickly spread to local cattle and wildlife populations From there the disease swept across eastern and southern Africa, with devastating consequences Within 10 years it had reached South Africa ...
... the east coast of Africa to feed the Italian army, which was invading Ethiopia at the time Quickly spread to local cattle and wildlife populations From there the disease swept across eastern and southern Africa, with devastating consequences Within 10 years it had reached South Africa ...
Resilience in Agriculture through Crop Diversification
... able to perform under changing environmental conditions (Matson et al. 1997, Altieri 1999), which is important given the expected changes to biotic and abiotic conditions. The following are a few of the major ways that the greater functional capacity of diverse agroecosystems has been found to prote ...
... able to perform under changing environmental conditions (Matson et al. 1997, Altieri 1999), which is important given the expected changes to biotic and abiotic conditions. The following are a few of the major ways that the greater functional capacity of diverse agroecosystems has been found to prote ...
Full Text
... scale may refer to changes in crop structural diversity; for example, using a mixture of crop varieties that have different plant heights. Diversification at the within-field scale may be represented by areas between and around fields where trap crops or natural enemy habitat can be planted. At the ...
... scale may refer to changes in crop structural diversity; for example, using a mixture of crop varieties that have different plant heights. Diversification at the within-field scale may be represented by areas between and around fields where trap crops or natural enemy habitat can be planted. At the ...
At high densities kangaroo grazing can reduce biodiversity
... Further information about this topic contact: ...
... Further information about this topic contact: ...
scope of the guide - Moreland City Council
... local native, non-local native and exotic plants which are aligned to the growing conditions of Moreland. Preference is given to planting indigenous (local native) vegetation of local provenance. In selecting native plants, priority has been given to plants that will grow well in the local environme ...
... local native, non-local native and exotic plants which are aligned to the growing conditions of Moreland. Preference is given to planting indigenous (local native) vegetation of local provenance. In selecting native plants, priority has been given to plants that will grow well in the local environme ...
WWF Mediterrâneo (Portugal)
... biodiversity and the increase of gas emissions that cause the greenhouse effect. It is estimated that 20% of gas emissions responsible for the greenhouse effect around the world, result in deforestation and deterioration of forests, which have reached a rate of 13 million hectares per year, (the equ ...
... biodiversity and the increase of gas emissions that cause the greenhouse effect. It is estimated that 20% of gas emissions responsible for the greenhouse effect around the world, result in deforestation and deterioration of forests, which have reached a rate of 13 million hectares per year, (the equ ...
The South Wiltshire Farmland Bird Project
... “We estimate that the landscape maintenance work carried out on the average English farm, not supported by agri-environment funding, amounted to £2,410 per year…It does not fully consider the loss of income associated with any reduced production…[or] the extent to which current agri-environment sche ...
... “We estimate that the landscape maintenance work carried out on the average English farm, not supported by agri-environment funding, amounted to £2,410 per year…It does not fully consider the loss of income associated with any reduced production…[or] the extent to which current agri-environment sche ...
The effect of grazing on biodiversity in the grassland biome
... and -trophic levels. However, a rapid assessment approach is crucial to assess the current level of biodiversity, overlapping between all aspects (plants, invertebrates, etc.). It is also important to determine what constitutes adequate biodiversity conservation. For current systems, we need to know ...
... and -trophic levels. However, a rapid assessment approach is crucial to assess the current level of biodiversity, overlapping between all aspects (plants, invertebrates, etc.). It is also important to determine what constitutes adequate biodiversity conservation. For current systems, we need to know ...
Taiga Biomes of the Earth
... Some migrate to slightly warmer climates—usually to the south—where food remains available. Others reduce their activity to a minimum and survive with the help of stored food supplies in their environment or fat supplies stored within the body. In winter, most insects seek havens beneath tree bark, ...
... Some migrate to slightly warmer climates—usually to the south—where food remains available. Others reduce their activity to a minimum and survive with the help of stored food supplies in their environment or fat supplies stored within the body. In winter, most insects seek havens beneath tree bark, ...
Dry Rainforests and Semi-evergreen Vine Thickets of South East
... isolated, however, the edges of dry rainforest are exposed to the drying effects of wind and sun, increasing fire risk. The presence of introduced pasture grasses and other weeds within dry rainforest, allows fire to penetrate the forest and can also increase the intensity of fires, especially durin ...
... isolated, however, the edges of dry rainforest are exposed to the drying effects of wind and sun, increasing fire risk. The presence of introduced pasture grasses and other weeds within dry rainforest, allows fire to penetrate the forest and can also increase the intensity of fires, especially durin ...
Managing For Old-Growth Structure in Northern Hardwood Forests
... tree selection; within-treatment variance was not significantly different between SCE and groupselection units (P = 0.296). These results are indicative of the high degree of horizontal structural variability expected for both group-selection and SCE, achieved in the later through variable density m ...
... tree selection; within-treatment variance was not significantly different between SCE and groupselection units (P = 0.296). These results are indicative of the high degree of horizontal structural variability expected for both group-selection and SCE, achieved in the later through variable density m ...
Ecology Connections 5. GUILDS One reason ecologists study
... 1) Empty, moderately-damaged mature trees: These become available when mature, drought-stressed trees are abandoned by resident ants or when moderate-intensity fires kill resident ants. The damage to trees by drought or moderate-intensity fires is relatively minor such that undamaged parts of the tr ...
... 1) Empty, moderately-damaged mature trees: These become available when mature, drought-stressed trees are abandoned by resident ants or when moderate-intensity fires kill resident ants. The damage to trees by drought or moderate-intensity fires is relatively minor such that undamaged parts of the tr ...
Conservationists Should Not Move Torreya taxifolia
... and I collected the material from approximately 150 trees that now constitute our ex situ plant material. My research has been focused on determining whether there is genetic differentiation across the distribution, understanding the magnitude of the population decline, understanding disease factors ...
... and I collected the material from approximately 150 trees that now constitute our ex situ plant material. My research has been focused on determining whether there is genetic differentiation across the distribution, understanding the magnitude of the population decline, understanding disease factors ...
Deadwood - Buglife
... consider public affairs, and the serious health and safety implications of this method. A variety of tree species should be used. Create new fallen dead Fallen dead can be created in a number of ways, including cutting trees (near ground level or leaving higher stumps to provide standing dead) or pu ...
... consider public affairs, and the serious health and safety implications of this method. A variety of tree species should be used. Create new fallen dead Fallen dead can be created in a number of ways, including cutting trees (near ground level or leaving higher stumps to provide standing dead) or pu ...
Irish Forests and Biodiversity
... • Forests are home to a major portion of global terrestrial biodiversity including more than half of all terrestrial species. In particular, forest canopies are among the most species rich terrestrial habitats supporting about 40% of invertebrate species, of which 10% are considered canopy speciali ...
... • Forests are home to a major portion of global terrestrial biodiversity including more than half of all terrestrial species. In particular, forest canopies are among the most species rich terrestrial habitats supporting about 40% of invertebrate species, of which 10% are considered canopy speciali ...
English
... efforts, such as research and conservation projects, ranging from population counts and identification of migration routes, to the improvement of habitats and the reduction of threats, protect migratory species. Also, assessing the impacts of infrastructure projects on migratory species before their ...
... efforts, such as research and conservation projects, ranging from population counts and identification of migration routes, to the improvement of habitats and the reduction of threats, protect migratory species. Also, assessing the impacts of infrastructure projects on migratory species before their ...
New Policies for Old Trees: Averting a Global
... trees have the lowest probability of developing. New policies are needed to limit deliberate removal of large old trees in agricultural areas, such as where central-pivot irrigation systems are used or where pastures with scattered trees are converted into treeless cropland (Maron & Fitzsimons 2007) ...
... trees have the lowest probability of developing. New policies are needed to limit deliberate removal of large old trees in agricultural areas, such as where central-pivot irrigation systems are used or where pastures with scattered trees are converted into treeless cropland (Maron & Fitzsimons 2007) ...