BIOL 221 - philipdarrenjones.com
... 3. During a field trip, an instructor touched a moth resting on a tree trunk. The moth raised its forewings to reveal large eyespots on its hind wings. The instructor asked why the moth lifted its wings. One student answered that sensory receptors had fired and triggered a neuronal reflex culminatin ...
... 3. During a field trip, an instructor touched a moth resting on a tree trunk. The moth raised its forewings to reveal large eyespots on its hind wings. The instructor asked why the moth lifted its wings. One student answered that sensory receptors had fired and triggered a neuronal reflex culminatin ...
Chapter06
... In large populations, the gene frequency in the offspring population is the same as in the parent population (Hardy-Weinberg Law of Equilibrium). Genetic diversity is maintained. Small isolated populations are subject to decline and extinction due to genetic changes in the population. The addition o ...
... In large populations, the gene frequency in the offspring population is the same as in the parent population (Hardy-Weinberg Law of Equilibrium). Genetic diversity is maintained. Small isolated populations are subject to decline and extinction due to genetic changes in the population. The addition o ...
Name Class Date Antarctic Food Web and Ecological Pyramid
... Draw Conclusions What effect would a drop in the size of the krill population have on the Antarctic food web and why? ...
... Draw Conclusions What effect would a drop in the size of the krill population have on the Antarctic food web and why? ...
Notes Chapter 2
... • Host-Parasite Relationship: – One organism becomes intimately associated with their” prey” feeding for an extended period of time without killing the host – Parasite: organism that does the feeding – Host: organism that is fed on ...
... • Host-Parasite Relationship: – One organism becomes intimately associated with their” prey” feeding for an extended period of time without killing the host – Parasite: organism that does the feeding – Host: organism that is fed on ...
Mathematical Modeling, Population Ecology, Population Models
... As plant standing biomass (= K) is increased, the dynamics of the system become increasingly less stable (i.e. small parameter changes become more likely to result in large qualitative changes in the dynamics) ...
... As plant standing biomass (= K) is increased, the dynamics of the system become increasingly less stable (i.e. small parameter changes become more likely to result in large qualitative changes in the dynamics) ...
Answers to 2.5 pg 47 #1-8
... 2. A food chain is a simple, idealized version of a food web. A food chain does not show all of the interactions in an ecosystem. A food web is complex. It shows many of the possible interactions in an ecosystem. 3. If a species is added to an ecosystem, the new species may have no natural predators ...
... 2. A food chain is a simple, idealized version of a food web. A food chain does not show all of the interactions in an ecosystem. A food web is complex. It shows many of the possible interactions in an ecosystem. 3. If a species is added to an ecosystem, the new species may have no natural predators ...
Chapter 6
... • Encountering none of the species that limited their population in the Old World, they spread across 40% of the U.S. watershed. • These invaders have both economic and ecological impacts, changing communities in ways scientists are only beginning to understand. ...
... • Encountering none of the species that limited their population in the Old World, they spread across 40% of the U.S. watershed. • These invaders have both economic and ecological impacts, changing communities in ways scientists are only beginning to understand. ...
Evolution, Biological Communities, and Biodiversity
... In terms of scale: Large scale (global environment) or small scale (fish bowl) As flows and storage: processes that change over time. As a closed or steady state: Mapping these flows from a distance creates the illusion of “balance” which leads to the idea of ...
... In terms of scale: Large scale (global environment) or small scale (fish bowl) As flows and storage: processes that change over time. As a closed or steady state: Mapping these flows from a distance creates the illusion of “balance” which leads to the idea of ...
How Universal Is Natural Selection?
... Thompson’s Relentless Evolution conveys his conviction that many or most species undergo almost unceasing evolution—specifically, evolution by natural selection. Thompson has been a major figure in evolutionary ecology for more than three decades and is a leading authority on the coevolution of inte ...
... Thompson’s Relentless Evolution conveys his conviction that many or most species undergo almost unceasing evolution—specifically, evolution by natural selection. Thompson has been a major figure in evolutionary ecology for more than three decades and is a leading authority on the coevolution of inte ...
2013 Training Handout
... Ecology = the systematic study of how organisms interact with one another and with their environment Environment consists of both a living component, the biotic environment (other organisms) and a non-living component, the abiotic environment, e.g. physical factors such as soil, rainfall, sunlight ...
... Ecology = the systematic study of how organisms interact with one another and with their environment Environment consists of both a living component, the biotic environment (other organisms) and a non-living component, the abiotic environment, e.g. physical factors such as soil, rainfall, sunlight ...
Chapter Objectives
... Describe precepts of classical and neoclassical economic theory, and summarize their implications for the environment Compare the concepts of economic growth, economic health, and sustainability Explain the fundamentals of environmental economics and ecological economics ...
... Describe precepts of classical and neoclassical economic theory, and summarize their implications for the environment Compare the concepts of economic growth, economic health, and sustainability Explain the fundamentals of environmental economics and ecological economics ...
Niche, refers to the role that a species plays within its ecosystem. In
... As each organism feeds on one lower in the food chain, the fat soluble pesticide began to be concentrated in ever higher amounts as one moved toward the top of the food pyramid. Since every organism eats far more than its own body mass in food, the tiny amounts found in each organism in the lower le ...
... As each organism feeds on one lower in the food chain, the fat soluble pesticide began to be concentrated in ever higher amounts as one moved toward the top of the food pyramid. Since every organism eats far more than its own body mass in food, the tiny amounts found in each organism in the lower le ...
Species Concept
... • What is “genetic diversity” within a species? • What is meant by “species diversity” within an ecosystem? • Can there be genetic diversity within an ecosystem? ...
... • What is “genetic diversity” within a species? • What is meant by “species diversity” within an ecosystem? • Can there be genetic diversity within an ecosystem? ...
FREE Sample Here
... 39. An interaction in which one species derives benefit from its host, but neither benefits nor harms the host is ____________. commensalism ...
... 39. An interaction in which one species derives benefit from its host, but neither benefits nor harms the host is ____________. commensalism ...
Homage to Malthus, Ricardo, and Boserup: Toward a General
... and religious fundamentalism caused neglect of secular knowledge. If we assume that technology is cumulative, we can build a variety of evolutionary models of technological growth, for example Human Ecology Review Vol. 4, No. 2 ...
... and religious fundamentalism caused neglect of secular knowledge. If we assume that technology is cumulative, we can build a variety of evolutionary models of technological growth, for example Human Ecology Review Vol. 4, No. 2 ...
Basic Ecology Notes
... Population-a group of organisms of one species living in the same place at the same time that interbreed and compete with each other for resources (ex. food, mates, shelter) ...
... Population-a group of organisms of one species living in the same place at the same time that interbreed and compete with each other for resources (ex. food, mates, shelter) ...
Recombination and epistasis facilitate introgressive hybridization
... number of loci affect the introgression? Features of models: The individual-based model and gamete-based model, which tracks changes in the number of invasive genes per gamete due to selection and recombination by assuming random arrangement of genes within gamete. Range of key variables: The recomb ...
... number of loci affect the introgression? Features of models: The individual-based model and gamete-based model, which tracks changes in the number of invasive genes per gamete due to selection and recombination by assuming random arrangement of genes within gamete. Range of key variables: The recomb ...
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.