Relationships between biodiversity and
... Human population growth has led to the global expansion of agriculture. The acreage of land used for crops increased by 466% ...
... Human population growth has led to the global expansion of agriculture. The acreage of land used for crops increased by 466% ...
Reading 15 Biodiversity and Ecosystem Functioning: Maintaining
... effects these activities—feeding, growing, moving, excreting waste, etc.—have on the physical and chemical conditions of their environment. (Note that “functioning” means “showing activity” and does not imply that organisms perform purposeful roles in ecosystem-level processes.) A functioning ecosys ...
... effects these activities—feeding, growing, moving, excreting waste, etc.—have on the physical and chemical conditions of their environment. (Note that “functioning” means “showing activity” and does not imply that organisms perform purposeful roles in ecosystem-level processes.) A functioning ecosys ...
Element Ratios and Aquatic Food Webs
... ratios of the changes in concentration that were similar to the cellular constituents. Redfield (1973) thought it the most important idea that he’d ever had, and it appears to be his most famous idea. It has been broadly applied to other locations and ecosystems because it was documented well, prese ...
... ratios of the changes in concentration that were similar to the cellular constituents. Redfield (1973) thought it the most important idea that he’d ever had, and it appears to be his most famous idea. It has been broadly applied to other locations and ecosystems because it was documented well, prese ...
Regime Shifts in the Anthropocene: drivers, risk
... biodiversity and installing wastewater treatment plants in coastal zones. Kelps are marine coastal ecosystems dominated by macroalgae typically found in temperate areas. This group of species form submarine forests with three or four layers, which provides different habitats to a variety of species. ...
... biodiversity and installing wastewater treatment plants in coastal zones. Kelps are marine coastal ecosystems dominated by macroalgae typically found in temperate areas. This group of species form submarine forests with three or four layers, which provides different habitats to a variety of species. ...
13.1 Ecologists Study Relationships
... – Omnivores, such as humans that eat both plants and animals, may be listed at different trophic levels in ...
... – Omnivores, such as humans that eat both plants and animals, may be listed at different trophic levels in ...
Describing Matter
... play a key role in the nitrogen cycle and making soil fertile. They convert molecular nitrogen gas (N2) in Earth’s atmosphere into compounds like ammonium (NH4+) or nitrate (NO3-), both of which can be absorbed by plants and algae and then converted into organic macromolecules like proteins. For a l ...
... play a key role in the nitrogen cycle and making soil fertile. They convert molecular nitrogen gas (N2) in Earth’s atmosphere into compounds like ammonium (NH4+) or nitrate (NO3-), both of which can be absorbed by plants and algae and then converted into organic macromolecules like proteins. For a l ...
Food Web Assembly at the Landscape Scale: Using Stable
... These authors have shown that food webs are composed of different energy channels based on discrete resources, which are often not homogeneously spread in space and time, thus influencing the different components of the food web in their own way. Moreover, spatial interactions among neighboring ecos ...
... These authors have shown that food webs are composed of different energy channels based on discrete resources, which are often not homogeneously spread in space and time, thus influencing the different components of the food web in their own way. Moreover, spatial interactions among neighboring ecos ...
The Net Libram of Athasian Ecology
... hostile unfavorable times that they have to deal with most of the time. Because of this strategy, a key ability is being able to disperse rapidly, so that remote habitats can be accessed as soon as available. For example, dandelions send out tons of tiny airborne seeds, and each seed has a very poor ...
... hostile unfavorable times that they have to deal with most of the time. Because of this strategy, a key ability is being able to disperse rapidly, so that remote habitats can be accessed as soon as available. For example, dandelions send out tons of tiny airborne seeds, and each seed has a very poor ...
Competition and Facilitation: a Synthetic Approach to Interactions in
... and Hacker 1994), and grasslands (Fowler 1988, Greenlee and Callaway 1996). In many of these cases, seedlings of beneficiary species are found spatially associated with nurse plants, whereas adults are not, which suggests that the balance of competition and facilitation shifts among the various life ...
... and Hacker 1994), and grasslands (Fowler 1988, Greenlee and Callaway 1996). In many of these cases, seedlings of beneficiary species are found spatially associated with nurse plants, whereas adults are not, which suggests that the balance of competition and facilitation shifts among the various life ...
A Stoichiometric Model of Early Plant Primary Succession
... abstract: The relative importance of plant facilitation and competition during primary succession depends on the development of ecosystem nutrient pools, yet the interaction of these processes remains poorly understood. To explore how these mechanisms interact to drive successional dynamics, we devi ...
... abstract: The relative importance of plant facilitation and competition during primary succession depends on the development of ecosystem nutrient pools, yet the interaction of these processes remains poorly understood. To explore how these mechanisms interact to drive successional dynamics, we devi ...
A multi-agent ecosystem model for studying changes in a tropical
... MPA (Kellner et al. 2007). In this paper the environment is considered homogeneous and constant all year round, so that the only spatial heterogeneity is defined by the fishing effort following MPA closure to fishers. The model grid included a total water surface of nearly 5000 ha, the MPA being 10% ...
... MPA (Kellner et al. 2007). In this paper the environment is considered homogeneous and constant all year round, so that the only spatial heterogeneity is defined by the fishing effort following MPA closure to fishers. The model grid included a total water surface of nearly 5000 ha, the MPA being 10% ...
Guide to Native Grassland Management in
... Grazing is the primary tool used to manage rangeland for livestock production, but grazing can also be used to enhance wildlife habitat. In a native rangeland, the foundation of plant production is in the plant growth, primarily grasses. Harvesting this production is accomplished by grazing of herb ...
... Grazing is the primary tool used to manage rangeland for livestock production, but grazing can also be used to enhance wildlife habitat. In a native rangeland, the foundation of plant production is in the plant growth, primarily grasses. Harvesting this production is accomplished by grazing of herb ...
resources from another place and time: responses to pulses in a
... populations and communities to interactions between pulses and subsidies that depend on whether or not the pulsed resource and the subsidy are in phase or out of phase with each other. If a subsidy becomes available or is mobilized primarily during pulse periods (‘‘in phase’’), the subsidy will ampl ...
... populations and communities to interactions between pulses and subsidies that depend on whether or not the pulsed resource and the subsidy are in phase or out of phase with each other. If a subsidy becomes available or is mobilized primarily during pulse periods (‘‘in phase’’), the subsidy will ampl ...
Legume species identity and soil nitrogen supply elevated atmospheric [CO
... We then used resampling to determine how uncertainty in B affected the parameter estimates. For each bootstrap run we randomly sampled four B-values (one for each species) from the normal distribution constructed from literature values, and calculated Ndfa for all plots based on these speciesspecifi ...
... We then used resampling to determine how uncertainty in B affected the parameter estimates. For each bootstrap run we randomly sampled four B-values (one for each species) from the normal distribution constructed from literature values, and calculated Ndfa for all plots based on these speciesspecifi ...
Ecosystem Consequences of Biological Invasions
... Pool Size: Do Exotic Species Alter the Amounts and Distribution of Elements within Ecosystems? Change in pool sizes has been examined in many studies of plant invasions. Liao et al. (2008), in a recent meta-analysis, found that plant invasions result in much higher pools of aboveground (133% higher) ...
... Pool Size: Do Exotic Species Alter the Amounts and Distribution of Elements within Ecosystems? Change in pool sizes has been examined in many studies of plant invasions. Liao et al. (2008), in a recent meta-analysis, found that plant invasions result in much higher pools of aboveground (133% higher) ...
Ch_15_Reforestation_MASTER
... forest cover types and ecological communities. Examine the broader landscape to assess existing cover types, habitat needs, and management trends. For example, tree planting may be used to establish mast-producing species, such as red oak, in areas where the oak resource is declining due to natural ...
... forest cover types and ecological communities. Examine the broader landscape to assess existing cover types, habitat needs, and management trends. For example, tree planting may be used to establish mast-producing species, such as red oak, in areas where the oak resource is declining due to natural ...
Impact of changing ice cover on pelagic productivity and food web
... period. The consequence of a changing ice cover on the food web structure and production in Disko Bay, Western Greenland, is analysed through application of a dynamical model for the planktonic food web. The model is successfully calibrated and tested for sensitivity, using a detailed data set for 1 ...
... period. The consequence of a changing ice cover on the food web structure and production in Disko Bay, Western Greenland, is analysed through application of a dynamical model for the planktonic food web. The model is successfully calibrated and tested for sensitivity, using a detailed data set for 1 ...
A Stoichiometric Model of Early Plant Primary Succession
... abstract: The relative importance of plant facilitation and competition during primary succession depends on the development of ecosystem nutrient pools, yet the interaction of these processes remains poorly understood. To explore how these mechanisms interact to drive successional dynamics, we devi ...
... abstract: The relative importance of plant facilitation and competition during primary succession depends on the development of ecosystem nutrient pools, yet the interaction of these processes remains poorly understood. To explore how these mechanisms interact to drive successional dynamics, we devi ...
Deep Sea Hydrothermal Vent Ecosystems
... eventually stops ejecting water with its chemical and mineral load. Decline does not occur immediately as there may be rich sulphide deposits around the vent which provide a finite supply of nutrients for the bacteria to utilise. However once this finite supply is exhausted the system will ultimatel ...
... eventually stops ejecting water with its chemical and mineral load. Decline does not occur immediately as there may be rich sulphide deposits around the vent which provide a finite supply of nutrients for the bacteria to utilise. However once this finite supply is exhausted the system will ultimatel ...
projects for 2012 - The University of Western Australia
... Institute. Staff from the School of Plant Biology have a broad range of interests in Marine Ecology. Research interests and activities range from habitat mapping, basic taxonomy and physiology of marine plants to population and community ecology of plants, invertebrates and fishes. Research is curre ...
... Institute. Staff from the School of Plant Biology have a broad range of interests in Marine Ecology. Research interests and activities range from habitat mapping, basic taxonomy and physiology of marine plants to population and community ecology of plants, invertebrates and fishes. Research is curre ...
Elevated carbon dioxide is predicted to promote model
... study, showing how species traits (abbreviations in bold; defined in Table 1) are linked. Dashed lines are the flows of information (parameters, conversion, etc.), and solid lines are flows of carbon. Numbers indicate processes as follows: (1) scaling of leaf photosynthesis to the canopy, (2) meteor ...
... study, showing how species traits (abbreviations in bold; defined in Table 1) are linked. Dashed lines are the flows of information (parameters, conversion, etc.), and solid lines are flows of carbon. Numbers indicate processes as follows: (1) scaling of leaf photosynthesis to the canopy, (2) meteor ...
Global Pollinator Decline: A Literature Review - GRID
... 24 Oldroyd BP (1999) Coevolution while you wait: Varroa jacobsoni, a new parasite of western honeybees. Trends Ecol Evol 14: 312–315. 25 van Baalen M, Beekman M (2006) The costs and benefi ts of genetic heterogeneity in resistance against parasites in social insects. Am Nat 167: 568–577. 26 Evans JD ...
... 24 Oldroyd BP (1999) Coevolution while you wait: Varroa jacobsoni, a new parasite of western honeybees. Trends Ecol Evol 14: 312–315. 25 van Baalen M, Beekman M (2006) The costs and benefi ts of genetic heterogeneity in resistance against parasites in social insects. Am Nat 167: 568–577. 26 Evans JD ...
JNCC Report No. 585: Conceptual Ecological Modelling of Shallow
... Sand bank Sand ripples Sand waves Seabed energy Seabed mobility Seasonal variability Secondary production Sediment Sediment dynamics Sediment resuspension Sediment stability Sediment transport Sparse fauna Species trait Species trait Sublittoral Substratum ...
... Sand bank Sand ripples Sand waves Seabed energy Seabed mobility Seasonal variability Secondary production Sediment Sediment dynamics Sediment resuspension Sediment stability Sediment transport Sparse fauna Species trait Species trait Sublittoral Substratum ...