
Environmental science
... The growth rate has slowed, but we still add more than 200,000 people to the planet each day ...
... The growth rate has slowed, but we still add more than 200,000 people to the planet each day ...
Allele Frequency Lab: Variation in a Pumpkin Species
... Objective: To observe how selective forces “Natural Selection” can change allele frequencies in a population and cause evolution to occur. Introduction: Allele frequency refers to how often an allele occurs in a population. Allele frequencies can change in a population over time, depending on the ‘s ...
... Objective: To observe how selective forces “Natural Selection” can change allele frequencies in a population and cause evolution to occur. Introduction: Allele frequency refers to how often an allele occurs in a population. Allele frequencies can change in a population over time, depending on the ‘s ...
RNG121 Syllabus_19Oct15
... Case Study Analysis: Identify ecological factors and interactions in a given situation, and explain the risks and benefits. One-day Ecosystem Analysis Fieldtrip for which students will be required to submit a field summary report that explains what they observed and how their observations are in ...
... Case Study Analysis: Identify ecological factors and interactions in a given situation, and explain the risks and benefits. One-day Ecosystem Analysis Fieldtrip for which students will be required to submit a field summary report that explains what they observed and how their observations are in ...
Ecological Succession - Hatboro
... the newly altered environment is often optimal for some other species of plant or animal. Under the changed conditions of the environment, the previously dominant species may fail and another species may become ascendant. Ecological succession may also occur when the conditions of an environment sud ...
... the newly altered environment is often optimal for some other species of plant or animal. Under the changed conditions of the environment, the previously dominant species may fail and another species may become ascendant. Ecological succession may also occur when the conditions of an environment sud ...
Miller Review Chapter 10 Chapter 10: Sustainability Terrestrial
... 2. Has important short-term economic benefits, but it also has a number of harmful environmental effects (severe erosion and loss of topsoil) 3. China now leads the world in new forest cover, due mostly to its plantations of fast-growing trees x. Ecological Tipping Point – an irreversible effect – b ...
... 2. Has important short-term economic benefits, but it also has a number of harmful environmental effects (severe erosion and loss of topsoil) 3. China now leads the world in new forest cover, due mostly to its plantations of fast-growing trees x. Ecological Tipping Point – an irreversible effect – b ...
What four main factors affect what life is found in an - OG
... 54. How are organisms that live in the intertidal zone adapted to their environment? 55. What are examples of organisms that are adapted to living in the intertidal zone? 56. Where does most photosynthetic activity on Earth occur? 57. The zones of marine ecosystems are divided based on what factors? ...
... 54. How are organisms that live in the intertidal zone adapted to their environment? 55. What are examples of organisms that are adapted to living in the intertidal zone? 56. Where does most photosynthetic activity on Earth occur? 57. The zones of marine ecosystems are divided based on what factors? ...
Chaos and closure terms in plankton food chain models
... pairs, we found that can be held constant by varying d2 and e2 along a line
in parameter space (Figure 2a and b). This allowed us to examine the results of
changing density dependence unconfounded by changes in total mortality.
The results in Figure 1 suggest a complex pattern of changes, from ...
... pairs, we found that
Populations Models
... The J-shaped curve This is an example of positive feedback 1 pair of elephants could produce 19 million elephants in 700 years ...
... The J-shaped curve This is an example of positive feedback 1 pair of elephants could produce 19 million elephants in 700 years ...
Food-Web Models Predict Species Abundances in Response to Habitat Change
... The loss of natural habitat area often is accompanied by the disappearance of large-bodied top predators and the upper trophic levels of food webs [1–3]. However, several pieces of evidence suggest that habitat area alone may be insufficient to predict changes in population size. Predictions of ecolo ...
... The loss of natural habitat area often is accompanied by the disappearance of large-bodied top predators and the upper trophic levels of food webs [1–3]. However, several pieces of evidence suggest that habitat area alone may be insufficient to predict changes in population size. Predictions of ecolo ...
Life Science
... LS.2 The student will investigate and understand that all living things are composed of cells. Key concepts include cell structure and organelles (cell membrane, cell wall, cytoplasm, vacuole, mitochondrion, endoplasmic reticulum, nucleus, and chloroplast); similarities and differences between plan ...
... LS.2 The student will investigate and understand that all living things are composed of cells. Key concepts include cell structure and organelles (cell membrane, cell wall, cytoplasm, vacuole, mitochondrion, endoplasmic reticulum, nucleus, and chloroplast); similarities and differences between plan ...
Nature Niagara News - Niagara Falls Nature Club
... Peter started taking pictures in Algonquin Park in about 2000. He quickly fell in love with the moose, the loons and the park itself. Since starting his photographic journey of the park, he has noticed a decline in wolf calls, numbers of monarch caterpillars, and increasing numbers of black bears, d ...
... Peter started taking pictures in Algonquin Park in about 2000. He quickly fell in love with the moose, the loons and the park itself. Since starting his photographic journey of the park, he has noticed a decline in wolf calls, numbers of monarch caterpillars, and increasing numbers of black bears, d ...
Sketch - Turner USD #202
... Main Idea: Classify Predator-Prey relationships and Parasite-Host relationships. Supporting Details: 1. Predators each, and usually kill, their prey. 2. Parasites feed off of, but usually don’t kill, their hosts. 3. Classify the following relationships (in your notebooks) as predator-and-prey (P-P) ...
... Main Idea: Classify Predator-Prey relationships and Parasite-Host relationships. Supporting Details: 1. Predators each, and usually kill, their prey. 2. Parasites feed off of, but usually don’t kill, their hosts. 3. Classify the following relationships (in your notebooks) as predator-and-prey (P-P) ...
Communities and Ecosystems 5.1
... Arrows in a food chain show the direction of flow of both the energy and nutrients that keep organisms alive. Energy flow through an ecosystem can be quantified and analyzed. At each step in the food chain, energy is lost from the chain in various ways. Some is not consumed, some leave the food chai ...
... Arrows in a food chain show the direction of flow of both the energy and nutrients that keep organisms alive. Energy flow through an ecosystem can be quantified and analyzed. At each step in the food chain, energy is lost from the chain in various ways. Some is not consumed, some leave the food chai ...
Mechanistic Approaches to Community Ecology
... population and community ecology from individual-ecological considerations, and which provide a decomposition of megaparameters into behavioral and physiological parameters, are cited as illustrating how the reduction might be done. I argue that "sufficient parameters" generally will not enhance the ...
... population and community ecology from individual-ecological considerations, and which provide a decomposition of megaparameters into behavioral and physiological parameters, are cited as illustrating how the reduction might be done. I argue that "sufficient parameters" generally will not enhance the ...
Species Abundance and Diversity Chapter 16
... inhabiting some defined area. Community Structure includes # of species, relative species abundance, and species diversity. Guild: Group of organisms that all make their living in the same fashion (can be closely related or not!). Seed eating animals in the desert. Life Form (growth form): Combi ...
... inhabiting some defined area. Community Structure includes # of species, relative species abundance, and species diversity. Guild: Group of organisms that all make their living in the same fashion (can be closely related or not!). Seed eating animals in the desert. Life Form (growth form): Combi ...
Geological Society of Australia Inc
... resilience depends on a dynamic relationship within species, among species and between species and their abiotic environment, as well as the physical and chemical interactions within the environment. The conservation and, where appropriate, restoration of these interactions and processes is of great ...
... resilience depends on a dynamic relationship within species, among species and between species and their abiotic environment, as well as the physical and chemical interactions within the environment. The conservation and, where appropriate, restoration of these interactions and processes is of great ...
Behavioral Ecology
... Fixed action patterns (FAP’s) are unlearned, unchangeable behaviors triggered by a sign stimulus. ...
... Fixed action patterns (FAP’s) are unlearned, unchangeable behaviors triggered by a sign stimulus. ...
ppt
... - but since size is an important correlate to resource use, at some point a species will do better "off the optimum", rather than competing with lots of species on the optimum....this is not as great a size class, so species will move to new size class to avoid competition more rapidly...small size ...
... - but since size is an important correlate to resource use, at some point a species will do better "off the optimum", rather than competing with lots of species on the optimum....this is not as great a size class, so species will move to new size class to avoid competition more rapidly...small size ...
Population Distribution and Abundance
... • Populations that are least threatened by extinction, have extensive geographic ranges, broad habitat tolerances, and some ...
... • Populations that are least threatened by extinction, have extensive geographic ranges, broad habitat tolerances, and some ...
docx BIOLOGY - Studybay.com
... On the other hand, a teacher should also nurture children in all ways of development such as cognitive, physical and social aspects. He should also take a time to listen to the children while in the classroom as well as actions and words interpretation. He should also communicate with all the stakeh ...
... On the other hand, a teacher should also nurture children in all ways of development such as cognitive, physical and social aspects. He should also take a time to listen to the children while in the classroom as well as actions and words interpretation. He should also communicate with all the stakeh ...
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.