Contemporary evolution
... Rapid environmental change, whether human induced such as fishing and hunting pressures, toxic chemicals, or natural climatic changes resulting in altered food availability have provided opportunities to observe rapid micro-evolutionary changes in contemporary time, or contemporary evolution. These ...
... Rapid environmental change, whether human induced such as fishing and hunting pressures, toxic chemicals, or natural climatic changes resulting in altered food availability have provided opportunities to observe rapid micro-evolutionary changes in contemporary time, or contemporary evolution. These ...
The evidence for evolution
... Absolute dating: age of fossils is estimated by rates of radioactive decay Relative dating: position of the fossil in the sediment Isotopes, like U238, transform at precisely known rates into nonradioactive forms. The rate of decay is known as an isotope’s half-life Fossil records document t ...
... Absolute dating: age of fossils is estimated by rates of radioactive decay Relative dating: position of the fossil in the sediment Isotopes, like U238, transform at precisely known rates into nonradioactive forms. The rate of decay is known as an isotope’s half-life Fossil records document t ...
AP Biology - Issaquah Connect
... 19. What is biological magnification and how does it relate to the health warnings given to pregnant women about the consumption of certain fish? ...
... 19. What is biological magnification and how does it relate to the health warnings given to pregnant women about the consumption of certain fish? ...
Ecology ppt - Duplin County Schools
... 1. A low annual temperature common to the northern latitudes determines in part the species of plants which can exist in that area. 2. The amount of oxygen dissolved in a body of water will help determine what species of fish live there. 3. The dry environment of desert regions limits the organisms ...
... 1. A low annual temperature common to the northern latitudes determines in part the species of plants which can exist in that area. 2. The amount of oxygen dissolved in a body of water will help determine what species of fish live there. 3. The dry environment of desert regions limits the organisms ...
Bio Handout 04 - Deft Studios!
... a. because of the interactions that shape the ecosystem. b. unless the species require different abiotic factors. c. because of the competitive exclusion principle. d. unless the species require different biotic factors. ____ 20. A symbiosis in which both species benefit is a. commensalism. b. mutua ...
... a. because of the interactions that shape the ecosystem. b. unless the species require different abiotic factors. c. because of the competitive exclusion principle. d. unless the species require different biotic factors. ____ 20. A symbiosis in which both species benefit is a. commensalism. b. mutua ...
Predator-prey "arms race"
... The wings of the bat, butterfly, and bird are made of different coverings, and insects do not have internal bones. The wings are analagous. They have the same function and shape, but are made differently. ...
... The wings of the bat, butterfly, and bird are made of different coverings, and insects do not have internal bones. The wings are analagous. They have the same function and shape, but are made differently. ...
Type I Functional Response
... • A single pattern of warning adopted by several unpalatable species, so that each participant is both model & mimic. • Avoidance learning by predator becomes more efficient such that a predator needs only to be exposed to a single species to avoid all of them. ...
... • A single pattern of warning adopted by several unpalatable species, so that each participant is both model & mimic. • Avoidance learning by predator becomes more efficient such that a predator needs only to be exposed to a single species to avoid all of them. ...
Center for Community-Based Resource Management (CBRM) CBRM Database
... were positively correlated with some components of ecological value. In terms of the spatial distribution of values, people valued protected areas, whereas those natural areas underrepresented in the reserve system were of higher ecological value. The habitats of threatened animal species were assig ...
... were positively correlated with some components of ecological value. In terms of the spatial distribution of values, people valued protected areas, whereas those natural areas underrepresented in the reserve system were of higher ecological value. The habitats of threatened animal species were assig ...
AIM: Students will know how to succeed on exams in urban ecology
... SWBAT identify 5 ways two populations could become reproductively isolated – SWBAT differentiate between directional, stabilizing, and disruptive selection – SWBAT recognize selection pressure from a word problem and what would happen to a population in response to that pressure ...
... SWBAT identify 5 ways two populations could become reproductively isolated – SWBAT differentiate between directional, stabilizing, and disruptive selection – SWBAT recognize selection pressure from a word problem and what would happen to a population in response to that pressure ...
Biology III, Summer 2009
... Competition is an interspecific interaction that occurs when two or more species are utilizing the same resources. These resources can be space, water, or energy, none of which are unlimited. Because the resources are limited, those used by one species necessarily reduce those available to other spe ...
... Competition is an interspecific interaction that occurs when two or more species are utilizing the same resources. These resources can be space, water, or energy, none of which are unlimited. Because the resources are limited, those used by one species necessarily reduce those available to other spe ...
Chapter 4: Biological Communities and Species
... • Plants have to battle with mature adults • Adaptive tendencies lead to greater dispersal of seeds • Territories are a direct result of intraspecific competition ...
... • Plants have to battle with mature adults • Adaptive tendencies lead to greater dispersal of seeds • Territories are a direct result of intraspecific competition ...
Population Ecology Simulation
... 4. Realize the difficulty of predicting ecological outcomes and the importance of mathematical modeling in these fields of biology. ...
... 4. Realize the difficulty of predicting ecological outcomes and the importance of mathematical modeling in these fields of biology. ...
06 ICA 6 Coevol-Mutualism rubric
... Parasitism +/Competition -/Disease +/2. Can the type of interaction change over evolutionary time? Yes Give an example. A seed predator may become a seed disperser…so changes from +/- to +/+ 3. What is coevolution? Traits of 2 or more species change in response to selection by their mutual interacti ...
... Parasitism +/Competition -/Disease +/2. Can the type of interaction change over evolutionary time? Yes Give an example. A seed predator may become a seed disperser…so changes from +/- to +/+ 3. What is coevolution? Traits of 2 or more species change in response to selection by their mutual interacti ...
Gateway Preparation Class: June 2, Thursday 1
... Bottom Line: Ecological changes refer to the growth or regrowth of species in an ecosystem over time. A common term associated with this concept is ecological succession. In ecological succession, the trend is an ecosystem moves from early stages where only pioneer species, such as small plants, mos ...
... Bottom Line: Ecological changes refer to the growth or regrowth of species in an ecosystem over time. A common term associated with this concept is ecological succession. In ecological succession, the trend is an ecosystem moves from early stages where only pioneer species, such as small plants, mos ...
PLANET EARTH: Deserts
... What are some common adaptations among desert animals? Have students write down their answers individually and then share them with a partner. Explain the unique way guanacos obtain water in the Atacama. Could this behavior be considered an adaptation? Explain your answer. How do locusts communicate ...
... What are some common adaptations among desert animals? Have students write down their answers individually and then share them with a partner. Explain the unique way guanacos obtain water in the Atacama. Could this behavior be considered an adaptation? Explain your answer. How do locusts communicate ...
Continuous Variation Most traits in a population. eg height and body
... In some circumstances, individuals at both extremes of a range of phenotypes are favored over those in the middle. This is called disruptive selection. An example: The residues ("tailings") of mines often contain such high concentrations of toxic metals (e.g., copper, lead) that most plants are unab ...
... In some circumstances, individuals at both extremes of a range of phenotypes are favored over those in the middle. This is called disruptive selection. An example: The residues ("tailings") of mines often contain such high concentrations of toxic metals (e.g., copper, lead) that most plants are unab ...
Speciation
... 6. As the allele frequencies in the two separate populations change due to sexual reproduction and possibly mutation, they can become more distinct. Eventually, given enough time and as pressure furth ...
... 6. As the allele frequencies in the two separate populations change due to sexual reproduction and possibly mutation, they can become more distinct. Eventually, given enough time and as pressure furth ...
QUEST REVIEW SHEET UNIT 5 Resource Management
... QUEST REVIEW SHEET UNIT 5 Resource Management The following is a list of the main topics and concepts we have covered in unit 5. This is simply a guide to help you study for your quest and the final exam. Your textbook and class notes should also be referenced when studying. MAIN TOPICS: ...
... QUEST REVIEW SHEET UNIT 5 Resource Management The following is a list of the main topics and concepts we have covered in unit 5. This is simply a guide to help you study for your quest and the final exam. Your textbook and class notes should also be referenced when studying. MAIN TOPICS: ...
Chapter 3 - Kenton County Schools
... Ecological Pyramid – a diagram that shows the relative amounts of energy or matter contained within each trophic level in a food chain or food web ...
... Ecological Pyramid – a diagram that shows the relative amounts of energy or matter contained within each trophic level in a food chain or food web ...
Community Processes: More on Competition Theory
... It turns out to be the same with the work of Jim Brown on desert rodents. In almost all of these cases, the results were accepted because the fit our expectations, not because they were right. In other words, it was not a process of conjecture and refutation, but a process of conjecture and ...
... It turns out to be the same with the work of Jim Brown on desert rodents. In almost all of these cases, the results were accepted because the fit our expectations, not because they were right. In other words, it was not a process of conjecture and refutation, but a process of conjecture and ...
9.1.R_PracticeTest - Menno Simons Christian School
... A population of mice live on a mountain slope. A sudden rockslide produces a barrier that permanently separates the mice on the lower slope from mice on the upper slope. After many thousands of years, the mice on the upper slope are significantly different from those living on the lower slope. 25. W ...
... A population of mice live on a mountain slope. A sudden rockslide produces a barrier that permanently separates the mice on the lower slope from mice on the upper slope. After many thousands of years, the mice on the upper slope are significantly different from those living on the lower slope. 25. W ...
The Resilience of Ecological Systems
... species survived the blast and in the subsequent recovery process. If the eruption had occurred in midsummer, for example, succession would have taken much longer and the surviving set of species would have been very different. In May, lakes were still covered with a protective layer of ice and nume ...
... species survived the blast and in the subsequent recovery process. If the eruption had occurred in midsummer, for example, succession would have taken much longer and the surviving set of species would have been very different. In May, lakes were still covered with a protective layer of ice and nume ...
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.