54_DetailLectOut w Pictures
... Interspecific interactions can be symbolized by the positive (+) or negative (−) effects they have on the survival and reproduction of the two species engaged in the interaction. o 0 indicates that a population is not affected by the interaction in any known way. ...
... Interspecific interactions can be symbolized by the positive (+) or negative (−) effects they have on the survival and reproduction of the two species engaged in the interaction. o 0 indicates that a population is not affected by the interaction in any known way. ...
AP® Environmental Science: Sample Syllabus 2 Syllabus 886977v1
... Topic: The Human Population: Growth, Demography, and Carrying Capacity A. Zero population growth B. Fertility and death rates C. Age structure histograms D. Factors affecting population size E. The demographic transition • Lab: Power of the Pyramids—Constructing Age-Sex Histograms: Students use cens ...
... Topic: The Human Population: Growth, Demography, and Carrying Capacity A. Zero population growth B. Fertility and death rates C. Age structure histograms D. Factors affecting population size E. The demographic transition • Lab: Power of the Pyramids—Constructing Age-Sex Histograms: Students use cens ...
Example at the course level
... 1. Describe how discreet sensory inputs can stimulate both simple and complex behaviors. 2. Describe how learning establishes specific links between experience and behavior. 3. Describe how both genetic make-‐u ...
... 1. Describe how discreet sensory inputs can stimulate both simple and complex behaviors. 2. Describe how learning establishes specific links between experience and behavior. 3. Describe how both genetic make-‐u ...
chapter 15 section 1 notes
... rate of an organism by using radiation or chemicals. Many mutations are harmful to the organism, but breeders can often produce a few mutants—individuals with mutations—with useful characteristics that are not found in the original population. For example, scientists have developed hundreds of usefu ...
... rate of an organism by using radiation or chemicals. Many mutations are harmful to the organism, but breeders can often produce a few mutants—individuals with mutations—with useful characteristics that are not found in the original population. For example, scientists have developed hundreds of usefu ...
Interactions between granivorous and omnivorous ants in a desert
... Case, 1988b; Adams & Tschinkel, 1995), can arise through predation. In particular, extant colonies often prey upon the periodic rain of newly emerged foundress queens (Hölldobler & Wilson, 1990), effectively eliminating the establishment of colonies near mature nests (Ryti & Case, 1988b). Thus one ...
... Case, 1988b; Adams & Tschinkel, 1995), can arise through predation. In particular, extant colonies often prey upon the periodic rain of newly emerged foundress queens (Hölldobler & Wilson, 1990), effectively eliminating the establishment of colonies near mature nests (Ryti & Case, 1988b). Thus one ...
Dan Cogălniceanu • Biodiversity
... to carve myself a small niche, focusing on aspects related to species diversity. The concept of biodiversity is too broad in coverage and tends to become empty of content, difficult to perceive and understand by most people. On the other hand, species diversity is clearly defined and I consider it to ...
... to carve myself a small niche, focusing on aspects related to species diversity. The concept of biodiversity is too broad in coverage and tends to become empty of content, difficult to perceive and understand by most people. On the other hand, species diversity is clearly defined and I consider it to ...
aspen - School of Natural Resources and Environment
... provides information on a) aspen dominated overstory and b) deciduous vs. coniferous understory and successional pathway over the entire spatial extent of UMBS and region. ...
... provides information on a) aspen dominated overstory and b) deciduous vs. coniferous understory and successional pathway over the entire spatial extent of UMBS and region. ...
Declining amphibian populations and possible ecological
... commercial overexploitation, invading exotic species, UV-B radiation, chemical contaminants and the pathogenic chytrid fungus, Batrachochytrium dendrobatides, which causes chytridiomycosis, are defined as the main causes for their declines (Halliday 2008, Lips et al. 2008, Stuart et al. 2008). Curren ...
... commercial overexploitation, invading exotic species, UV-B radiation, chemical contaminants and the pathogenic chytrid fungus, Batrachochytrium dendrobatides, which causes chytridiomycosis, are defined as the main causes for their declines (Halliday 2008, Lips et al. 2008, Stuart et al. 2008). Curren ...
14 Years of Deer Browsing Shapes a Mesic Forest
... native forb species was similar inside the fence (1.8 species m-2) to outside the fence (1.9 species m-2), although the forbs exposed to deer were much smaller in size than those protected from deer. Inside the fence, the forb layer was dominated by species characteristic of undisturbed woods such a ...
... native forb species was similar inside the fence (1.8 species m-2) to outside the fence (1.9 species m-2), although the forbs exposed to deer were much smaller in size than those protected from deer. Inside the fence, the forb layer was dominated by species characteristic of undisturbed woods such a ...
Amphibian Predator Defenses
... • Embryos may alter hatchling time if a predator is sensed. • Or as some species do, one parent guards the eggs. ...
... • Embryos may alter hatchling time if a predator is sensed. • Or as some species do, one parent guards the eggs. ...
Biotic vs. abiotic determinants of the local distribution of
... overriding influences on effects of competition and effects of abiotic factors. 2.Evidence implicates predation as having key influence on where sable ...
... overriding influences on effects of competition and effects of abiotic factors. 2.Evidence implicates predation as having key influence on where sable ...
what`s wrong with worms? - Western Forestry and Conservation
... Darwin Earthworms! “The plow is one of the most ancient and most valuable of Man’s inventions; but long before he existed, the land … was regularly ploughed, and still continues to be ploughed, by earthworms. It may be (doubtful) whether there are many other animals which have played so important ...
... Darwin Earthworms! “The plow is one of the most ancient and most valuable of Man’s inventions; but long before he existed, the land … was regularly ploughed, and still continues to be ploughed, by earthworms. It may be (doubtful) whether there are many other animals which have played so important ...
Basins of attraction for species extinction and coexistence in spatial
... walks 关18兴, individual mobility M is defined as M = s共2N兲−1, to which the number of sites explored by one mobile individual per unit time is proportional. At each time step, a random individual is picked to interact with one of its four nearest neighbors, and the algorithm in 关19兴 is used to determi ...
... walks 关18兴, individual mobility M is defined as M = s共2N兲−1, to which the number of sites explored by one mobile individual per unit time is proportional. At each time step, a random individual is picked to interact with one of its four nearest neighbors, and the algorithm in 关19兴 is used to determi ...
HOW HEALTHY IS YOUR ECOSYSTEM? (2 Hours)
... • Pass out 5 red chips to one-third of your students, 5 blue chips to one-third of your students, and 5 green chips to the remaining third. Explain that each red chip represents 10 white-tailed deer, each green chip represents 10 white-footed mice, and each green chip represents 10 eastern cotton ta ...
... • Pass out 5 red chips to one-third of your students, 5 blue chips to one-third of your students, and 5 green chips to the remaining third. Explain that each red chip represents 10 white-tailed deer, each green chip represents 10 white-footed mice, and each green chip represents 10 eastern cotton ta ...
Trait and density mediated indirect interactions in simple
... species due to predation. Our point here is to show that if experiments are not designed to separate out traitmediated and predation-mediated effects on dynamics, community ecologists may continue to surmise incorrectly that the important causal driver of food web dynamics is predation (i.e. killing ...
... species due to predation. Our point here is to show that if experiments are not designed to separate out traitmediated and predation-mediated effects on dynamics, community ecologists may continue to surmise incorrectly that the important causal driver of food web dynamics is predation (i.e. killing ...
Known knowns and unknowns in biology
... Here we present a knowledge-data framework based on the politico-military statement by Donald Rumsfeld (below) which has, we believe, direct relevance to ecological conservation. Ecological examples of four of the identified categories are provided with discussion of the conservation risks to a spec ...
... Here we present a knowledge-data framework based on the politico-military statement by Donald Rumsfeld (below) which has, we believe, direct relevance to ecological conservation. Ecological examples of four of the identified categories are provided with discussion of the conservation risks to a spec ...
Class Notes
... The fungicide has altered the gene pool of the fungus—an evolutionary effect—by selecting for individuals that are resistant to the chemical. Eventually, the fungicide works so poorly that the farmer needs a different, more potent chemical to control the fungus. ...
... The fungicide has altered the gene pool of the fungus—an evolutionary effect—by selecting for individuals that are resistant to the chemical. Eventually, the fungicide works so poorly that the farmer needs a different, more potent chemical to control the fungus. ...
Stoichiometry of actual vs. potential predator–prey interactions
... used the database of arthropod stoichiometries compiled from the literature by Fagan et al. (2002). This database, which includes the C : N body content for 119 herbivorous insect species and 33 predatory arthropod species (31 insects and two spiders) collected from dozens of ecosystems on several c ...
... used the database of arthropod stoichiometries compiled from the literature by Fagan et al. (2002). This database, which includes the C : N body content for 119 herbivorous insect species and 33 predatory arthropod species (31 insects and two spiders) collected from dozens of ecosystems on several c ...
CHAPTER 50
... The fungicide has altered the gene pool of the fungus—an evolutionary effect—by selecting for individuals that are resistant to the chemical. Eventually, the fungicide works so poorly that the farmer needs a different, more potent chemical to control the fungus. ...
... The fungicide has altered the gene pool of the fungus—an evolutionary effect—by selecting for individuals that are resistant to the chemical. Eventually, the fungicide works so poorly that the farmer needs a different, more potent chemical to control the fungus. ...
Pre-AP Summer Biology Project - School District of Indian River
... shown in a food web, so the grass could also have an arrow leading to a grasshopper. 8. For each level (1-6 above) give a picture of each organism, give its trophic name (producer, herbivore, omnivore, carnivore, decomposer), and the common name of the organism. 9. Here is an excellent website to le ...
... shown in a food web, so the grass could also have an arrow leading to a grasshopper. 8. For each level (1-6 above) give a picture of each organism, give its trophic name (producer, herbivore, omnivore, carnivore, decomposer), and the common name of the organism. 9. Here is an excellent website to le ...
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.