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DESIGN AN ECOSYSTEM
DESIGN AN ECOSYSTEM

... i. Limited Range : Species is found in only a small, specific area. ii. Small Population or Rarity: Species is rare within its range. High level consumers are usually rare. Other species may also have small populations. iii. High Specificity: Species has very specific requirements for: food (e.g. Pa ...
Sustaining Fisheries Yields Over Evolutionary Time Scales
Sustaining Fisheries Yields Over Evolutionary Time Scales

... duration, perhaps leading to increased risk of predation or other sources of larval mortality (17, 18). Work in progress suggests that growth-rate differences result from changes in per capita rates of food consumption. Hence, selection on adult size caused the evolution of a suite of traits likely ...
biology - Ward`s Science
biology - Ward`s Science

... 11B Investigate and analyze how organisms, populations, and communities respond to external factors 11D Describe how events and processes that occur during ecological succession can change populations and species diversity 12A Interpret relationships, including predation, parasitism, commensalism ...
4-Life Histories
4-Life Histories

... Goal is to maximize lifetime reproductive success with limited resources. These are hypotheses that can be tested experimentally. When to begin breeding? How often to breed? How many offspring per event? a. Clutch size vs lifetime number of offspring. What is the evidence for the “Lack clutch”? ...
Population and Community Ecology
Population and Community Ecology

... Demography: the study of factors that affect birth and death rate. 1. Age Structure and Sex Ratio  General Trend: A population with more older, non-reproductive individuals, grows slower than a population with a larger percentage of young, reproducing individuals  Generation time= the average span ...
Community Ecology
Community Ecology

... OF DIFFERENT SPECIES CAN BE DIRECT OR INDIRECT ...
Speaker information and abstracts
Speaker information and abstracts

... by contrast, no such change occurred in a sympatric non-mimetic species or in conspecifics from a region where coral snakes remain abundant. Presumably, more precise mimicry has continued to evolve after model extirpation because relatively few predator generations have passed, and the fitness costs ...
Lecture K6 – Community Ecology – Dr
Lecture K6 – Community Ecology – Dr

... •Simple generalizations on processes governing community structure do not have broad explanatory power; distributions of most populations in communities are affected to some extent by both abiotic factors and biotic interactions •Processes that disturb and destabilize existing relationships among or ...
AP® Biology Scoring Guidelines Question 2 Many populations
AP® Biology Scoring Guidelines Question 2 Many populations

... Many populations exhibit the following growth curve: ...
Ecosystem - angelteach
Ecosystem - angelteach

... Community- all of the organisms that occupy a specific area; also called biological community Ecosystem- a community of different species and their interaction with each other and their environment ...
Ch43 Lecture-Populations
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Ecological Relationships
Ecological Relationships

... Extinction of a species due to direct competition. • KEYSTONE PREDATOR/SPECIES A predator that causes a large increase in diversity of its habitat. ...
Sample Ecology Regional Exam Division B
Sample Ecology Regional Exam Division B

... Referring to the figure above, answer the following questions. 1. Currently, how much time are caribou spending eating? 2. If snow depth increases by 30%, how much less time are the caribou hypothesized to spend eating? Show your calculations. 3. Give one example of an activity that may be impacted ...
Population Dynamics
Population Dynamics

Population Size
Population Size

... plants in an area help determine which other organisms can survive in that area, soil affects every organism in an environment. ...
pptx - Central Web Server 2
pptx - Central Web Server 2

... transformation the plant cell has integrated the T DNA into its genome and expresses the encoded genes. This results in the transformed cells forming a tumor, and, in addition, the transformed plant cells also produce a strange amino acid that cannot be utilized by the plant cells, but that serves a ...
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OCR Biology AS and A2 GCE specifications for

... Discuss the fact that classification systems were based originally on observable features but more recent approaches draw on a wider range of evidence to clarify relationships between organisms, including molecular evidence (HSW1, 7a); Define the term variation and discuss the fact that variation oc ...
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... a. Systematics is the study of biological diversity in an evolutionary context b. Taxonomy involves the identification and classification of species 10. Explain how species are named and categorized into a hierarchy of groups. a. Binomial i. Capitalized genus, non-capitalized species name ii. Underl ...
Population Ecology
Population Ecology

... • This is demonstrated by winter moth caterpillars (the host species) and wasp larvae (parasites on the caterpillars). ...
Population Ecology
Population Ecology

... rates in a non-mobile population are equal and constant, the number of individuals in the population would remain constant • Natural population are not static – Constantly subject to change and motion because of many variable factors both in the environment and within the organisms themselves ...
No Slide Title
No Slide Title

... Mistake less than 1/109 nct added Errors result in mutation : silent mutation loss of mutation improved / novel phenotypes ...
Bio 211
Bio 211

... =change in gene frequency over time Theory of Evolution 1. explains life’s unity and diversity 2. natural selection as mechanism 3. all living things have evolved 4. changes are gradual 5. shaped by natural processes Darwin’s Theory of Natural Selection 1. offspring look like parents 2. variation am ...
Pre-AP Biology Ecology Exam Study Guide
Pre-AP Biology Ecology Exam Study Guide

... When aspen are browsed (nibbled by herbivores) their growth is stunted, and thus their overall height is reduced. This data shows that aspen in riparian areas (along streams) are larger than those in the uplands, suggesting that there is less browsing along streams. The reason for this could be tha ...
BIOL 102 Rev Nov 2014 - Glendale Community College
BIOL 102 Rev Nov 2014 - Glendale Community College

... Upon successful completion of the required coursework, the student will be able to: 1. describe the anatomy and physiology of one or more of the major physiological systems in angiosperms; 2. describe the anatomy and physiology of one or more of the major organ systems of vertebrates; 3. explain the ...
Decurrent False Aster Best Management Practices
Decurrent False Aster Best Management Practices

... Populations of Decurrent False Aster declined as floodplain wetlands were converted for agricultural and other uses. It is currently threatened by flood-control measures, agricultural use of marginal river-bottom land, increased siltation of floodwater, herbicide use for weed control, and constructi ...
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Molecular ecology

Molecular ecology is a field of evolutionary biology that is concerned with applying molecular population genetics, molecular phylogenetics, and more recently genomics to traditional ecological questions (e.g., species diagnosis, conservation and assessment of biodiversity, species-area relationships, and many questions in behavioral ecology). It is virtually synonymous with the field of ""Ecological Genetics"" as pioneered by Theodosius Dobzhansky, E. B. Ford, Godfrey M. Hewitt and others. These fields are united in their attempt to study genetic-based questions ""out in the field"" as opposed to the laboratory. Molecular ecology is related to the field of Conservation genetics.Methods frequently include using microsatellites to determine gene flow and hybridization between populations. The development of molecular ecology is also closely related to the use of DNA microarrays, which allows for the simultaneous analysis of the expression of thousands of different genes. Quantitative PCR may also be used to analyze gene expression as a result of changes in environmental conditions or different response by differently adapted individuals.
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