Trophic interactions - Faculty Reporting System
... littoral) are linked in space so energy moves between them • E.g., in a lake, disparate areas like pelagic and littoral areas get linked by detrital, bacterial and nutrient cycles –Especially once lakes start to mix ...
... littoral) are linked in space so energy moves between them • E.g., in a lake, disparate areas like pelagic and littoral areas get linked by detrital, bacterial and nutrient cycles –Especially once lakes start to mix ...
Aquatic Food Web Interactions - Association for Biology Laboratory
... two graphs that indicate the relative biomass of each trophic level (Figure 15.1). (See also Fretwell 1977, Oksanen et al. 1981, Power 1990, and Schmitz 1993). If the community contains only plants, the total net primary production is determined by those factors that affect photosynthesis: Availabil ...
... two graphs that indicate the relative biomass of each trophic level (Figure 15.1). (See also Fretwell 1977, Oksanen et al. 1981, Power 1990, and Schmitz 1993). If the community contains only plants, the total net primary production is determined by those factors that affect photosynthesis: Availabil ...
Ch. 42 Text
... In some areas, sewage runoff has caused eutrophication of lakes, which can lead to loss of most fish species In lakes, phosphorus limits cyanobacterial growth more often than nitrogen This has led to the use of phosphate-free detergents ...
... In some areas, sewage runoff has caused eutrophication of lakes, which can lead to loss of most fish species In lakes, phosphorus limits cyanobacterial growth more often than nitrogen This has led to the use of phosphate-free detergents ...
Ecosystems and Energy
... In some areas, sewage runoff has caused eutrophication of lakes, which can lead to loss of most fish species In lakes, phosphorus limits cyanobacterial growth more often than nitrogen This has led to the use of phosphate-free detergents ...
... In some areas, sewage runoff has caused eutrophication of lakes, which can lead to loss of most fish species In lakes, phosphorus limits cyanobacterial growth more often than nitrogen This has led to the use of phosphate-free detergents ...
Ecological mechanisms associated with the positive
... positive effects on nitrification (i.e., the conversion of NH4þ to NO3!; Scherer-Lorenzen et al. 2003), we expect that soil NO3! accumulation rates in plant assemblages containing legumes will have significant effects on the N uptake by non-N-fixing plants and in turn on aboveground productivity. Th ...
... positive effects on nitrification (i.e., the conversion of NH4þ to NO3!; Scherer-Lorenzen et al. 2003), we expect that soil NO3! accumulation rates in plant assemblages containing legumes will have significant effects on the N uptake by non-N-fixing plants and in turn on aboveground productivity. Th ...
Abstract
... Successful recovery of threatened populations of Puget Sound steelhead (Oncorhynchus mykiss) will undoubtedly require knowledge of the predominant processes affecting population productivity. Here we utilize a 24 year data set of spawners and total resulting recruitment of adult wild winter run stee ...
... Successful recovery of threatened populations of Puget Sound steelhead (Oncorhynchus mykiss) will undoubtedly require knowledge of the predominant processes affecting population productivity. Here we utilize a 24 year data set of spawners and total resulting recruitment of adult wild winter run stee ...
Excavations (Part 1)
... Vehicle traffic near the excavation site Stability of structures adjacent to the excavation site How employees will get in and out of the excavation Vehicles and other mobile equipment that will operate near the excavation Possibility of atmospheric hazards in the excavation Possibility ...
... Vehicle traffic near the excavation site Stability of structures adjacent to the excavation site How employees will get in and out of the excavation Vehicles and other mobile equipment that will operate near the excavation Possibility of atmospheric hazards in the excavation Possibility ...
Seasonal and Latitudinal Patterns in Rocky Intertidal Communities
... influx of warm water from the equator (Fleischbein et al. 1987), which creates stagnant water conditions with decreased upwelling that can produce local extinctions and regime shifts (Glynn 1998, Harley et al. 2006). Conversely, La Niña years produce intense, persistent upwelling, although the basel ...
... influx of warm water from the equator (Fleischbein et al. 1987), which creates stagnant water conditions with decreased upwelling that can produce local extinctions and regime shifts (Glynn 1998, Harley et al. 2006). Conversely, La Niña years produce intense, persistent upwelling, although the basel ...
Manuscript for Marine Ecology Progress Series
... influx of warm water from the equator (Fleischbein et al. 1987), which creates stagnant water conditions with decreased upwelling that can produce local extinctions and regime shifts (Glynn 1998, Harley et al. 2006). Conversely, La Niña years produce intense, persistent upwelling, although the basel ...
... influx of warm water from the equator (Fleischbein et al. 1987), which creates stagnant water conditions with decreased upwelling that can produce local extinctions and regime shifts (Glynn 1998, Harley et al. 2006). Conversely, La Niña years produce intense, persistent upwelling, although the basel ...
Forest restoration, biodiversity and ecosystem functioning R E V I E W
... state of the art). The traditional view that has dominated ecology until the 1990’s started from the idea that species distribution patterns resulted directly from the abiotic and biotic (species interactions) components determining the environment. In the early 1990’s, however, this view was challe ...
... state of the art). The traditional view that has dominated ecology until the 1990’s started from the idea that species distribution patterns resulted directly from the abiotic and biotic (species interactions) components determining the environment. In the early 1990’s, however, this view was challe ...
Where Innovation Is Tradition - Potomac Valley Ecological
... Where Innovation Is Tradition Virginia Cooperative Fish and Wildlife Research Unit 2010 ...
... Where Innovation Is Tradition Virginia Cooperative Fish and Wildlife Research Unit 2010 ...
Microbial Activity in Arsenic Contaminated Soil
... Will soil previously contaminated with CCA contain microbes that show more resilience to prolonged exposure to CCA wood than microbes in an uncontaminated soil? ...
... Will soil previously contaminated with CCA contain microbes that show more resilience to prolonged exposure to CCA wood than microbes in an uncontaminated soil? ...
The Functions of Biological Diversity in an Age of Extinction REVIEW
... environmental insights gained from these two decades of research. The Frontier of Integrative Biodiversity The first generation of studies on biodiversity’s influence over ecosystem functioning asked simply whether the production of biomass (a commonly studied ecosystem function) varies predictably ...
... environmental insights gained from these two decades of research. The Frontier of Integrative Biodiversity The first generation of studies on biodiversity’s influence over ecosystem functioning asked simply whether the production of biomass (a commonly studied ecosystem function) varies predictably ...
system-wide assessment and monitoring program (swamp) framework
... two. For the restoration monitoring framework, drivers were grouped into two broad categories: system processes and human activities (Figure 1). System processes include geological processes, surface water and groundwater inputs, and atmospheric and oceanic processes. Human activities include restor ...
... two. For the restoration monitoring framework, drivers were grouped into two broad categories: system processes and human activities (Figure 1). System processes include geological processes, surface water and groundwater inputs, and atmospheric and oceanic processes. Human activities include restor ...
1 PHYSICAL-BIOLOGICAL COUPLING AND THE CHALLENGE OF
... physical processes exist in large freshwater ecosystems such as the Laurentian Great Lakes, research on physical control of early life stage success in freshwater fishes in general, and specifically in Great Lakes fishes, has been comparatively scant. A growing body of research, however, has identif ...
... physical processes exist in large freshwater ecosystems such as the Laurentian Great Lakes, research on physical control of early life stage success in freshwater fishes in general, and specifically in Great Lakes fishes, has been comparatively scant. A growing body of research, however, has identif ...
Section 3-1 and Section 3-2 Book Work Review – Finding the Good
... ANSWER: A diagram that shows the relative amounts of energy or matter contained within each trophic level in a food chain or ...
... ANSWER: A diagram that shows the relative amounts of energy or matter contained within each trophic level in a food chain or ...
Biodiversity - University of London International Programmes
... the Social Sciences. Materials for these programmes are developed by academics at the London School of Economics and Political Science (LSE). For more information, see: www.londoninternational.ac.uk ...
... the Social Sciences. Materials for these programmes are developed by academics at the London School of Economics and Political Science (LSE). For more information, see: www.londoninternational.ac.uk ...
Stability and Fragility in Arctic Ecosystems
... Thus we have reached the preliminary, and obvious, conclusion that the definition of “stability” is important. A second conclusion must bethat “no oscillation” stability (definition 1) and extreme oscillation are both hazardous states in terms of the survival of the system, and that one defence agai ...
... Thus we have reached the preliminary, and obvious, conclusion that the definition of “stability” is important. A second conclusion must bethat “no oscillation” stability (definition 1) and extreme oscillation are both hazardous states in terms of the survival of the system, and that one defence agai ...
Herbivore physiological response to predation risk and implications
... lower the quantity of energy that can be allocated to production (20–23). Consequently, stress-induced constraints on herbivore production should lower the demand for N-rich proteins (24). Herbivores also have low capacity to store excess nutrients (24), and hence should seek plants with high digest ...
... lower the quantity of energy that can be allocated to production (20–23). Consequently, stress-induced constraints on herbivore production should lower the demand for N-rich proteins (24). Herbivores also have low capacity to store excess nutrients (24), and hence should seek plants with high digest ...
The Bottom Line: Impacts of Alien Plant Invasions in Protected Areas
... nutrient cycling, hydrology and fire regimes (Levine et al. 2003). These authors found that many studies examined the impacts of invasions on plant diversity and composition, but fewer than 5 % test whether these effects arise through competition, allelopathy, alteration of ecosystem variables or ot ...
... nutrient cycling, hydrology and fire regimes (Levine et al. 2003). These authors found that many studies examined the impacts of invasions on plant diversity and composition, but fewer than 5 % test whether these effects arise through competition, allelopathy, alteration of ecosystem variables or ot ...
Heathlands confronting global change: drivers of biodiversity loss
... Received: 3 July 2012 Returned for revision: 23 August 2012 Accepted: 18 October 2012 Published electronically: 6 December 2012 ...
... Received: 3 July 2012 Returned for revision: 23 August 2012 Accepted: 18 October 2012 Published electronically: 6 December 2012 ...
International Conference - Soil Fertility and Soil Productivity
... not produce the highest yield from additional investments such as from seeds, fertilizer, biocides, soil tillage and irrigation. In view of modern ways of soil use it is necessary to distinguish the yields achieved solely from natural soil properties, and yields achieved from soil properties which t ...
... not produce the highest yield from additional investments such as from seeds, fertilizer, biocides, soil tillage and irrigation. In view of modern ways of soil use it is necessary to distinguish the yields achieved solely from natural soil properties, and yields achieved from soil properties which t ...
Human impact on the nitrogen cycle
Human impact on the nitrogen cycle is diverse. Agricultural and industrial nitrogen (N) inputs to the environment currently exceed inputs from natural N fixation. As a consequence of anthropogenic inputs, the global nitrogen cycle (Fig. 1) has been significantly altered over the past century. Global atmospheric nitrous oxide (N2O) mole fractions have increased from a pre-industrial value of ~270 nmol/mol to ~319 nmol/mol in 2005. Human activities account for over one-third of N2O emissions, most of which are due to the agricultural sector. This article is intended to give a brief review of the history of anthropogenic N inputs, and reported impacts of nitrogen inputs on selected terrestrial and aquatic ecosystems.