Indirect Effects of Recreation on Wildlife
... Snow-based recreation can also affect soils and vegetation. The most pronounced impacts are those associated with ski-resort development, which can involve substantial tree felling and ground-surface leveling, in addition to facility construction. Such developments can fragment and reduce the availa ...
... Snow-based recreation can also affect soils and vegetation. The most pronounced impacts are those associated with ski-resort development, which can involve substantial tree felling and ground-surface leveling, in addition to facility construction. Such developments can fragment and reduce the availa ...
Models in behavioral ecology
... • k : fitness at high level of investment • a : limit below which seed is unviable • a + b : seed weight giving fitness k/2 •Aim : maximize f = Y/{x+C/i} ...
... • k : fitness at high level of investment • a : limit below which seed is unviable • a + b : seed weight giving fitness k/2 •Aim : maximize f = Y/{x+C/i} ...
Army ants in four forests
... sites were chosen to span a wide latitudinal range (from approximately 0° to 10°N), and to represent both the Central American and the South American faunas. Army ant raid rates (summed across all species encountered) covary with local net primary productivity (Kaspari and O’Donnell 2003). It is not ...
... sites were chosen to span a wide latitudinal range (from approximately 0° to 10°N), and to represent both the Central American and the South American faunas. Army ant raid rates (summed across all species encountered) covary with local net primary productivity (Kaspari and O’Donnell 2003). It is not ...
Sexratio meiotic drive and interspecific competition
... two species begin to compete. However, we also created a continuous time model that contains both competition and sex-ratio meiotic drive. The equilibria are identical, though the integrated model allows us to consider the impact of more parameters (e.g. a genotype-specific mortality rate in the spe ...
... two species begin to compete. However, we also created a continuous time model that contains both competition and sex-ratio meiotic drive. The equilibria are identical, though the integrated model allows us to consider the impact of more parameters (e.g. a genotype-specific mortality rate in the spe ...
Symbiosis Stories!
... Symbiosis Stories! Members of different populations will interact with each other and these interactions are known as symbiotic relationships. There are five general types of symbiotic relationships. ...
... Symbiosis Stories! Members of different populations will interact with each other and these interactions are known as symbiotic relationships. There are five general types of symbiotic relationships. ...
terrestrial food webs All wet or dried up? Real differences between
... trophic transfer among the compartments. According to this view, apparent contrasts between aquatic and terrestrial ecosystems arise from differences in energy or nutrient availability, or the efficiency with which energy or materials are exchanged through trophic linkages. Although rates of net pri ...
... trophic transfer among the compartments. According to this view, apparent contrasts between aquatic and terrestrial ecosystems arise from differences in energy or nutrient availability, or the efficiency with which energy or materials are exchanged through trophic linkages. Although rates of net pri ...
Newsletter
... TCBR researcher Dr. Jane Stout in collaboration with other international experts recently published an important comment paper following a publication by Aebi and Neumann (2011). The paper highlights the danger of accepting unsupported biodiversity‐conservation argument. The ...
... TCBR researcher Dr. Jane Stout in collaboration with other international experts recently published an important comment paper following a publication by Aebi and Neumann (2011). The paper highlights the danger of accepting unsupported biodiversity‐conservation argument. The ...
Poster GRS and GRC - University of Amsterdam
... The reduction in effect size over time can be explained by loss of function due to selection against plant defense induction and suppression in lab cultures, or due to mutation accumulation as a result of random genetic processes. This case of ‘inadvertent selection’ in lab cultures demonstrates int ...
... The reduction in effect size over time can be explained by loss of function due to selection against plant defense induction and suppression in lab cultures, or due to mutation accumulation as a result of random genetic processes. This case of ‘inadvertent selection’ in lab cultures demonstrates int ...
AN EVALUATION OF MECHANISMS PREVENTING GROWTH AND
... had no effect on A. saccharinum survival but improved E. perfoliatum survival. Activated carbon addition had short-term benefits allowing E. perfoliatum plants to grow for 4 wk and increased A. saccharinum leaf width but not biomass. Nutrient addition had no beneficial effect on transplants. These r ...
... had no effect on A. saccharinum survival but improved E. perfoliatum survival. Activated carbon addition had short-term benefits allowing E. perfoliatum plants to grow for 4 wk and increased A. saccharinum leaf width but not biomass. Nutrient addition had no beneficial effect on transplants. These r ...
Regional climate change adaptation strategies for biodiversity
... at the LLNL Green Data Oasis (LLNL et al., 2008). These simulations use general circulation models (GCMs) produced for the Intergovernmental Panel on Climate Change (IPCC) Fourth Assessment Report (AR4), scaled to a finer resolution (i.e., ‘‘downscaled”) using bias-correction to eliminate discrepanci ...
... at the LLNL Green Data Oasis (LLNL et al., 2008). These simulations use general circulation models (GCMs) produced for the Intergovernmental Panel on Climate Change (IPCC) Fourth Assessment Report (AR4), scaled to a finer resolution (i.e., ‘‘downscaled”) using bias-correction to eliminate discrepanci ...
Tale of Two Scorpions - Teacher Copy2
... mouse #5 tipped over both cups during one of the trials. Ashlee and Matt ended the trial early because the data collected at that point would not provide them with useful information about which species of scorpion the mouse preferred. However, they chose to not replace this trial with another one, ...
... mouse #5 tipped over both cups during one of the trials. Ashlee and Matt ended the trial early because the data collected at that point would not provide them with useful information about which species of scorpion the mouse preferred. However, they chose to not replace this trial with another one, ...
Systematic measurement of effectiveness for conservation of
... 1984, Paulay 1994) largely due to harvesting and introduced invasive species (Atkinson 1989). In New Zealand, the effects of predators and human modification were described by Diamond (1990) as one of the worst tragedies to befall any island archipelago. An endemic family of birds (Dinornithidae) is ...
... 1984, Paulay 1994) largely due to harvesting and introduced invasive species (Atkinson 1989). In New Zealand, the effects of predators and human modification were described by Diamond (1990) as one of the worst tragedies to befall any island archipelago. An endemic family of birds (Dinornithidae) is ...
African ungulates recognize a locally extinct native predator
... responses to predation risk exhibited by prey may be a prerequisite for carnivores to supply their full suite of ecosystem functions (Berger 2007). Large carnivores are typically extinction prone and most continents have suffered dramatic declines in their terrestrial large carnivore fauna (Dalerum ...
... responses to predation risk exhibited by prey may be a prerequisite for carnivores to supply their full suite of ecosystem functions (Berger 2007). Large carnivores are typically extinction prone and most continents have suffered dramatic declines in their terrestrial large carnivore fauna (Dalerum ...
Ecosystems - Class7-A
... To close this lesson, I would show a real life example of an ecosystem at work. This would be done through a short video showing progression from primary producers all the way up the chain. I would then ask the students to point out similarities between the one they viewed and the ones we discussed ...
... To close this lesson, I would show a real life example of an ecosystem at work. This would be done through a short video showing progression from primary producers all the way up the chain. I would then ask the students to point out similarities between the one they viewed and the ones we discussed ...
FEEDING SELECTIVITY OF BROWN TROUT (SALMO TRUTTA) IN
... Consumption of macroinvertebrates by trout in Loch Ness Aquatic, terrestrial and airborne macroinvertebrates were also consumed by the brown trout of Loch Ness. Macroinvertebrates are known to be important in the diets of salmonids (Dervo et al. 1991; Hegge et al. 1993; Bridcut & Giller 1995). Altho ...
... Consumption of macroinvertebrates by trout in Loch Ness Aquatic, terrestrial and airborne macroinvertebrates were also consumed by the brown trout of Loch Ness. Macroinvertebrates are known to be important in the diets of salmonids (Dervo et al. 1991; Hegge et al. 1993; Bridcut & Giller 1995). Altho ...
View/Open - Oregon State University
... T. (2014). Non-random biodiversity loss underlies predictable increases in viral disease prevalence. Journal of the Royal Society Interface, 11(92) ...
... T. (2014). Non-random biodiversity loss underlies predictable increases in viral disease prevalence. Journal of the Royal Society Interface, 11(92) ...
here - Ammonia Workshop Edinburgh 2006
... • Some outcomes from the group discussion: - shift in species composition is regarded as an adverse effect - covers the aspect of impacts on biodiversity - covers the long-term aspect of CLE since shifts in species composition take time - other assessments may be useful (such as %N in tissue or solu ...
... • Some outcomes from the group discussion: - shift in species composition is regarded as an adverse effect - covers the aspect of impacts on biodiversity - covers the long-term aspect of CLE since shifts in species composition take time - other assessments may be useful (such as %N in tissue or solu ...
Evolutionary relatedness does not predict competition and co
... species combinations, provided the most refined and generalizable [35,36] estimates of competition and coexistence by using the mutual invisibility criterion to quantify the strength of niche as well as fitness differences among species pairs. Despite differences in experimental details, all three s ...
... species combinations, provided the most refined and generalizable [35,36] estimates of competition and coexistence by using the mutual invisibility criterion to quantify the strength of niche as well as fitness differences among species pairs. Despite differences in experimental details, all three s ...
Birds in Urban Ecosystems: Population Dynamics, Community
... In most cases, diversity in urban habitats decreases or remains similar to wildlands (Marzluff, 2001; Chace and Walsh, 2006). Although urbanization increases total bird densities, it appears that only a few species contribute to this increase. Cities consist of mixtures of built habitats and green p ...
... In most cases, diversity in urban habitats decreases or remains similar to wildlands (Marzluff, 2001; Chace and Walsh, 2006). Although urbanization increases total bird densities, it appears that only a few species contribute to this increase. Cities consist of mixtures of built habitats and green p ...
Regeneration of Sponges in Ecological Context: Is Regeneration an
... All individuals with wounds surrounded entirely by live tissue had fully re-constituted their surface pinacoderm within the first 2 days. In all species, except Halichondria magniconulosa, for which surface color is distinct from inner-tissue color, redevelopment of normal surface color lagged behin ...
... All individuals with wounds surrounded entirely by live tissue had fully re-constituted their surface pinacoderm within the first 2 days. In all species, except Halichondria magniconulosa, for which surface color is distinct from inner-tissue color, redevelopment of normal surface color lagged behin ...
Downloaded
... In the early 1970s marine ecology was thriving. Studies of reproduction, development, and life histories of marine organisms were popular topics of research. However, despite the large amount of knowledge of marine animals’ life histories that had developed, most research was still being carried out ...
... In the early 1970s marine ecology was thriving. Studies of reproduction, development, and life histories of marine organisms were popular topics of research. However, despite the large amount of knowledge of marine animals’ life histories that had developed, most research was still being carried out ...
A stochastic hybrid model of a biological filter
... depends on the x′ concentration. On the other hand f− is kept constant to the parameter value km . Note that modelling the promoter states with the master Equation (3) and the switching rates as in Equation (5) and (6), we are assuming a saturation effect of the promoter µ by the transcription facto ...
... depends on the x′ concentration. On the other hand f− is kept constant to the parameter value km . Note that modelling the promoter states with the master Equation (3) and the switching rates as in Equation (5) and (6), we are assuming a saturation effect of the promoter µ by the transcription facto ...
Sciurus carolinensis, Eastern Gray Squirrel
... Home range averages 0.5-10 ha, with older males tending to have the largest ranges (Teaford 1986); usually home range is less than five hectares (Koprowski 1994). Not territorial, home range overlap is extensive; social system is characterized by a linear dominance hierarchy. Disperses up to a few k ...
... Home range averages 0.5-10 ha, with older males tending to have the largest ranges (Teaford 1986); usually home range is less than five hectares (Koprowski 1994). Not territorial, home range overlap is extensive; social system is characterized by a linear dominance hierarchy. Disperses up to a few k ...
Young Naturalist Award 2001 Introduction Ever since I was a toddler
... the red fox during his frequent visits to my backyard. The red fox's diet includes small rodents, rabbits, and young opossums. In the same way, adult opossums may raid great horned owls' nests and eat the owlets, as I sadly discovered early one morning last March. Through examination of the many spo ...
... the red fox during his frequent visits to my backyard. The red fox's diet includes small rodents, rabbits, and young opossums. In the same way, adult opossums may raid great horned owls' nests and eat the owlets, as I sadly discovered early one morning last March. Through examination of the many spo ...
Theoretical ecology
Theoretical ecology is the scientific discipline devoted to the study of ecological systems using theoretical methods such as simple conceptual models, mathematical models, computational simulations, and advanced data analysis. Effective models improve understanding of the natural world by revealing how the dynamics of species populations are often based on fundamental biological conditions and processes. Further, the field aims to unify a diverse range of empirical observations by assuming that common, mechanistic processes generate observable phenomena across species and ecological environments. Based on biologically realistic assumptions, theoretical ecologists are able to uncover novel, non-intuitive insights about natural processes. Theoretical results are often verified by empirical and observational studies, revealing the power of theoretical methods in both predicting and understanding the noisy, diverse biological world.The field is broad and includes foundations in applied mathematics, computer science, biology, statistical physics, genetics, chemistry, evolution, and conservation biology. Theoretical ecology aims to explain a diverse range of phenomena in the life sciences, such as population growth and dynamics, fisheries, competition, evolutionary theory, epidemiology, animal behavior and group dynamics, food webs, ecosystems, spatial ecology, and the effects of climate change.Theoretical ecology has further benefited from the advent of fast computing power, allowing the analysis and visualization of large-scale computational simulations of ecological phenomena. Importantly, these modern tools provide quantitative predictions about the effects of human induced environmental change on a diverse variety of ecological phenomena, such as: species invasions, climate change, the effect of fishing and hunting on food network stability, and the global carbon cycle.