The role of plant species in biomass production and response to
... assemblages is caused more by complementarity than by sampling effects (Loreau & Hector 2001; Tilman et al. 2001), yet how species interactions generate complementarity is poorly understood. The lack of understanding of these interactions is especially acute for aggregate properties of the ecosystem ...
... assemblages is caused more by complementarity than by sampling effects (Loreau & Hector 2001; Tilman et al. 2001), yet how species interactions generate complementarity is poorly understood. The lack of understanding of these interactions is especially acute for aggregate properties of the ecosystem ...
Passive and Active Restoration Strategies to Activate Soil
... Land degradation in arid and semiarid lands increases as a result of soil misuse or mismanagement, which, together with climatic variations, may promote desertification and reduces soil productivity [1, 2]. In Colombia, 78.9% of dry lands show some degree of desertification, mainly due to soil erosi ...
... Land degradation in arid and semiarid lands increases as a result of soil misuse or mismanagement, which, together with climatic variations, may promote desertification and reduces soil productivity [1, 2]. In Colombia, 78.9% of dry lands show some degree of desertification, mainly due to soil erosi ...
Ch. 6-Biomes
... Plants of the Taiga • A conifer is a tree that has seeds that develop in cones. Their leaves’ arrow shape and waxy coating helps them to retain water in the winter. The conifer’s shape also helps the tree shed snow to the ground and not get weighed down. • Conifer needles contains substances that ma ...
... Plants of the Taiga • A conifer is a tree that has seeds that develop in cones. Their leaves’ arrow shape and waxy coating helps them to retain water in the winter. The conifer’s shape also helps the tree shed snow to the ground and not get weighed down. • Conifer needles contains substances that ma ...
prediction_GOAmodel_Gaichas
... – Predict consequences of ecosystem changes not related to fishing, therefore beyond our control – Qualitative predictions, must incorporate uncertainty ...
... – Predict consequences of ecosystem changes not related to fishing, therefore beyond our control – Qualitative predictions, must incorporate uncertainty ...
Costs and benefits of biological control of invasive alien
... Cost–benefit studies of biocontrol programmes generally indicate positive returns on investment. McConnachie et al.7 reviewed nine studies that had taken place between 1939 and 2000, all of which indicated positive benefit:cost ratios ranging from 1.9:1 to 53:1, with a mean of 18:1. In Australia, a ...
... Cost–benefit studies of biocontrol programmes generally indicate positive returns on investment. McConnachie et al.7 reviewed nine studies that had taken place between 1939 and 2000, all of which indicated positive benefit:cost ratios ranging from 1.9:1 to 53:1, with a mean of 18:1. In Australia, a ...
Lesson Overview
... The Science of Ecology Ecology is the scientific study of interactions among and between organisms and their physical environment. Interactions within the biosphere produce a web of interdependence between organisms and the environments in which they live. ...
... The Science of Ecology Ecology is the scientific study of interactions among and between organisms and their physical environment. Interactions within the biosphere produce a web of interdependence between organisms and the environments in which they live. ...
mb3ech09 - Chaparral Star Academy
... • Zooplankton rise to shallow water at night, sink to deeper water during the day • Zooplankters usually start to sink before dawn and start to rise before dusk • Internal biological clock that is reinforced by daynight light changes (bring individuals in laboratory and they maintain daily rhythm fo ...
... • Zooplankton rise to shallow water at night, sink to deeper water during the day • Zooplankters usually start to sink before dawn and start to rise before dusk • Internal biological clock that is reinforced by daynight light changes (bring individuals in laboratory and they maintain daily rhythm fo ...
Abstracts - Society For Range Management
... driver of change in this region. The presence of this invasive plant in shrub-steppe ecosystems results in increased fire frequency, size, and severity, and it now dominates large portions of the ecosystems, degrading the landscape. The conversion from diverse ecosystems to ones dominated by a singl ...
... driver of change in this region. The presence of this invasive plant in shrub-steppe ecosystems results in increased fire frequency, size, and severity, and it now dominates large portions of the ecosystems, degrading the landscape. The conversion from diverse ecosystems to ones dominated by a singl ...
3. Ecosystems Booklet TN
... untouched areas nearby (M3); pollarding so deer can’t eat shoots (M1); (max 2) LOOK FOR key ideas expressed in different ways ...
... untouched areas nearby (M3); pollarding so deer can’t eat shoots (M1); (max 2) LOOK FOR key ideas expressed in different ways ...
TOPIC 2 - MARKING SCHEME - International School Bangkok
... e.g. large enough area for a viable population of top carnivores [1]/ in one block of land/water that is not spread out but compact in shape [1]/minimise edge:area ratio [1]/corridors between smaller areas [1]/legislation/purchase of land to protect it [1]/agreement of humans living in or around the ...
... e.g. large enough area for a viable population of top carnivores [1]/ in one block of land/water that is not spread out but compact in shape [1]/minimise edge:area ratio [1]/corridors between smaller areas [1]/legislation/purchase of land to protect it [1]/agreement of humans living in or around the ...
What happens when artificial genes move
... Now that plant breeders are taking genes from other species and putting them into commercial plants to provide them with increased resistance to disease and insects, increase nutritional value and for other meritorious purposes, plant promiscuity presents a potential problem: What will the environme ...
... Now that plant breeders are taking genes from other species and putting them into commercial plants to provide them with increased resistance to disease and insects, increase nutritional value and for other meritorious purposes, plant promiscuity presents a potential problem: What will the environme ...
6 Succession and Change in Ecosystems
... accident to the Great Lakes. The larvae of this mussel were discharged from ships. With no natural predators in the Great Lakes, the mussel was able to survive and thrive. Now it is a serious problem. It clogs water pipes and deprives animals that naturally occur there of space and food. Historicall ...
... accident to the Great Lakes. The larvae of this mussel were discharged from ships. With no natural predators in the Great Lakes, the mussel was able to survive and thrive. Now it is a serious problem. It clogs water pipes and deprives animals that naturally occur there of space and food. Historicall ...
Draft version: Farley, J. (2012). Natural Capital. Berkshire
... distinguished between the two types of natural capital discussed by Schumacher. Fossil fuels along with all other raw materials from nature, both renewable and non-renewable, are stock-flow resources, which are consumed and therefore depleted in the act of production. Humans can decide the rate at w ...
... distinguished between the two types of natural capital discussed by Schumacher. Fossil fuels along with all other raw materials from nature, both renewable and non-renewable, are stock-flow resources, which are consumed and therefore depleted in the act of production. Humans can decide the rate at w ...
D 56. Shachak et al. 2008. Woody sp.as landscape modulators
... (figure 1). Theories on the environmental impacts of organisms, communities, and ecosystems are well developed. Theories on environmental impacts resulting from ecosystem or landscape modulation are less developed. The concept of organisms as ecosystem engineers, which focuses on modulation processe ...
... (figure 1). Theories on the environmental impacts of organisms, communities, and ecosystems are well developed. Theories on environmental impacts resulting from ecosystem or landscape modulation are less developed. The concept of organisms as ecosystem engineers, which focuses on modulation processe ...
Soil Heterogeneity Effects on Tallgrass Prairie Community
... randomly assigned to heterogeneity treatments of control, soil depth heterogeneity, soil nutrient heterogeneity, or maximum heterogeneity containing both the depth and nutrient heterogeneity treatments (Fig. 1). The soil depth and nutrient manipulations were assigned to strips within each plot. The ...
... randomly assigned to heterogeneity treatments of control, soil depth heterogeneity, soil nutrient heterogeneity, or maximum heterogeneity containing both the depth and nutrient heterogeneity treatments (Fig. 1). The soil depth and nutrient manipulations were assigned to strips within each plot. The ...
Using constraint lines to characterize plant
... in forests and other polycultures (White 1980, Westoby 1984, Guo and Rundel 1998, Enquist et al. in press). Although the thinning law has traditionally been used to assess the effect of density and competition on population biomass, because of interest in timber yield in forestry and similar applica ...
... in forests and other polycultures (White 1980, Westoby 1984, Guo and Rundel 1998, Enquist et al. in press). Although the thinning law has traditionally been used to assess the effect of density and competition on population biomass, because of interest in timber yield in forestry and similar applica ...
How do they get their food?
... • In patch selection, the patch has to be higher quality than just supplying metabolic needs • This means forager can juggle C and P! • E.g. could go to patch of lower quality IF had lower predation risk! • E.g., could “take the chance” going to high quality/risk patch but for shorter time because o ...
... • In patch selection, the patch has to be higher quality than just supplying metabolic needs • This means forager can juggle C and P! • E.g. could go to patch of lower quality IF had lower predation risk! • E.g., could “take the chance” going to high quality/risk patch but for shorter time because o ...
How do they get their food?
... • In patch selection, the patch has to be higher quality than just supplying metabolic needs • This means forager can juggle C and P! • E.g. could go to patch of lower quality IF had lower predation risk! • E.g., could “take the chance” going to high quality/risk patch but for shorter time because o ...
... • In patch selection, the patch has to be higher quality than just supplying metabolic needs • This means forager can juggle C and P! • E.g. could go to patch of lower quality IF had lower predation risk! • E.g., could “take the chance” going to high quality/risk patch but for shorter time because o ...
Tan, Milton - University of Delaware
... longevity and fecundity (Price et al. 1980). Variation between plant species and within parts of the plants provides different refuges for herbivores from natural enemies, therefore affecting foraging efficiency. Herbivores may be outside of the area searched by natural enemies with a search pattern ...
... longevity and fecundity (Price et al. 1980). Variation between plant species and within parts of the plants provides different refuges for herbivores from natural enemies, therefore affecting foraging efficiency. Herbivores may be outside of the area searched by natural enemies with a search pattern ...
The interplay of pollinator diversity, pollination services
... affected butterfly richness and abundance. The authors argue that the spatial distribution of AES must be taken into account to maximize their potential to improve farmland biodiversity. Along similar lines, Winfree et al. (2008) studied bee visitation to four vegetable crops in relation to land use ...
... affected butterfly richness and abundance. The authors argue that the spatial distribution of AES must be taken into account to maximize their potential to improve farmland biodiversity. Along similar lines, Winfree et al. (2008) studied bee visitation to four vegetable crops in relation to land use ...
Aquatic Insects for Biomonitoring Freshwater Ecosystems: A Report
... Aquatic biodiversity is one of the most essential characteristics of aquatic ecosystem for maintaining its stability. Aquatic ecosystems are under increasing pressure from various kinds of disturbances. This situation threatens both aquatic living resources and human population. Biodiversity loss in ...
... Aquatic biodiversity is one of the most essential characteristics of aquatic ecosystem for maintaining its stability. Aquatic ecosystems are under increasing pressure from various kinds of disturbances. This situation threatens both aquatic living resources and human population. Biodiversity loss in ...
Effects of groundcover management on ground beetles (Coleoptera
... although it did not affect other species (Holliday and Hagley, 1978). Soil moisture negatively affected carabid catches in cultivated fields (Cárcamo et al., 1995). This could explain the significantly lower diversity reported in the straw mulch plots since humidity in this cover would be likely to ...
... although it did not affect other species (Holliday and Hagley, 1978). Soil moisture negatively affected carabid catches in cultivated fields (Cárcamo et al., 1995). This could explain the significantly lower diversity reported in the straw mulch plots since humidity in this cover would be likely to ...
Susquenita Curriculum PENNSYLVANIA Course: Science Grade 7
... Describe how waste management affects the environment (e.g., recycling, composting, landfills, incineration, sewage treatment). S8.B.3.3.4 -- Essential Explain the long-term effects of using integrated pest management (e.g., herbicides, natural predators, biogenetics) on the environment. S8.D.1.2.1 ...
... Describe how waste management affects the environment (e.g., recycling, composting, landfills, incineration, sewage treatment). S8.B.3.3.4 -- Essential Explain the long-term effects of using integrated pest management (e.g., herbicides, natural predators, biogenetics) on the environment. S8.D.1.2.1 ...
Developing Trails in Sensitive Areas
... A floodplain is land adjacent to a stream or river that stretches from the banks of its channel to the base of the enclosing valley. As the name suggests, floodplains are often subject to flooding during periods of high discharge. Their proximity to water features makes them fascinating locations fo ...
... A floodplain is land adjacent to a stream or river that stretches from the banks of its channel to the base of the enclosing valley. As the name suggests, floodplains are often subject to flooding during periods of high discharge. Their proximity to water features makes them fascinating locations fo ...