Succession
... What is a climax community? • Self-replacing, stable seral stage. • Insufficient allogenic and autogenic agents to promote change. • Persists over several generations. • If community is disturbed, replaced by individuals of the same species. ...
... What is a climax community? • Self-replacing, stable seral stage. • Insufficient allogenic and autogenic agents to promote change. • Persists over several generations. • If community is disturbed, replaced by individuals of the same species. ...
P548/M548 Mathematical Biology
... •Not a model unless we can explain why the death rate d~N/K. •Can always improve fit using more parameters. •Meaningless unless we can justify them. •Logistic Map has only three parameters N0, K, r – doesn't fit real populations, very well. But we are not just curve fitting. •Don't introduce paramet ...
... •Not a model unless we can explain why the death rate d~N/K. •Can always improve fit using more parameters. •Meaningless unless we can justify them. •Logistic Map has only three parameters N0, K, r – doesn't fit real populations, very well. But we are not just curve fitting. •Don't introduce paramet ...
INTRODUCTION - Information technology
... • Ecologists usually define a _____________ as a group of individuals of a single species inhabiting a specific area. – Characterized by the number of individuals and their ____________. • Additional characteristics of a population … ...
... • Ecologists usually define a _____________ as a group of individuals of a single species inhabiting a specific area. – Characterized by the number of individuals and their ____________. • Additional characteristics of a population … ...
Gillian Martin, Director of the CCI, made a 45
... 63% of their winter range, and Mountain Bluebirds (MOBLs) 73% of their breeding range by 2080. Tree Swallows are likely to arrive on their breeding grounds earlier than MOBLs (instead of after MOBL, as they have historically) thereby changing the dynamics of competition. Science also suggests that t ...
... 63% of their winter range, and Mountain Bluebirds (MOBLs) 73% of their breeding range by 2080. Tree Swallows are likely to arrive on their breeding grounds earlier than MOBLs (instead of after MOBL, as they have historically) thereby changing the dynamics of competition. Science also suggests that t ...
EcologyUnit3-6.24.15
... Standard 3: Communities CLE 3255.3.1 Explain ecological niches within various habitats. 3255.3.1 Describe the difference between a fundamental niche and a realized niche. 3255.3.2 Create a chart to compare and contrast specialist and generalist species and describe environmental conditions that ...
... Standard 3: Communities CLE 3255.3.1 Explain ecological niches within various habitats. 3255.3.1 Describe the difference between a fundamental niche and a realized niche. 3255.3.2 Create a chart to compare and contrast specialist and generalist species and describe environmental conditions that ...
Comparison of species sensitivity distributions based on population
... organisms are adapted from long to this pollutant. Hence, phenotypes more protective for the life history traits with the greater impact on their fitness (and hence on population dynamics at the population level) were selected in the past. For instance, the sensitivity of C. riparius life cycle par ...
... organisms are adapted from long to this pollutant. Hence, phenotypes more protective for the life history traits with the greater impact on their fitness (and hence on population dynamics at the population level) were selected in the past. For instance, the sensitivity of C. riparius life cycle par ...
Slide 1
... Density-Independent Limiting Factors Density-independent limiting factors affect all populations in similar ways, regardless of population size and density. Unusual weather such as hurricanes, droughts, or floods, and natural disasters such as wildfires, can act as density-independent limiting fact ...
... Density-Independent Limiting Factors Density-independent limiting factors affect all populations in similar ways, regardless of population size and density. Unusual weather such as hurricanes, droughts, or floods, and natural disasters such as wildfires, can act as density-independent limiting fact ...
Chapter Outline
... 1. Populations regulated by density-dependent factors are affected by the number of organisms present. a. Competition can occur when members of a species attempt to use the same resources that are in limited supply. b. Predation occurs when one living organism, the predator, eats another, the prey. ...
... 1. Populations regulated by density-dependent factors are affected by the number of organisms present. a. Competition can occur when members of a species attempt to use the same resources that are in limited supply. b. Predation occurs when one living organism, the predator, eats another, the prey. ...
Populations III: Harvest Models
... Hindsight always helps – the Allee effect Low population density is prone to sudden extinction Fewer mating opportunities; simply too few to be fit enough Logistic ...
... Hindsight always helps – the Allee effect Low population density is prone to sudden extinction Fewer mating opportunities; simply too few to be fit enough Logistic ...
Mader/Biology, 11/e – Chapter Outline
... Ecology is the study of the interactions of organisms with other organisms and with the physical environment. 2. Ecology studies how environmental factors determine the distribution and abundance of populations. 3. Ecology and evolution are related because ecological interactions are natural selecti ...
... Ecology is the study of the interactions of organisms with other organisms and with the physical environment. 2. Ecology studies how environmental factors determine the distribution and abundance of populations. 3. Ecology and evolution are related because ecological interactions are natural selecti ...
Ecology of Populations
... The Remora attaches itself to the shark and saves energy since it doesn’t have to swim, and it gets to eat on the shark’s kills. The shark doesn’t get anything. ...
... The Remora attaches itself to the shark and saves energy since it doesn’t have to swim, and it gets to eat on the shark’s kills. The shark doesn’t get anything. ...
UNIT B Notes Bio20-2
... Mutation present before the invention of DDT – caused fly’s to have a slower growth rate a disadvantage. This mutation provided resistance to DDT, allowing these fly’s to survive the pesticide and produce offspring. In populations that reproduce quickly (like bacteria) a rapidly changing envir ...
... Mutation present before the invention of DDT – caused fly’s to have a slower growth rate a disadvantage. This mutation provided resistance to DDT, allowing these fly’s to survive the pesticide and produce offspring. In populations that reproduce quickly (like bacteria) a rapidly changing envir ...
The Origin of Diversity
... genotype was advantageous and gave a 15% higher growth rate, the ab gave 5% higher growth rate. Furthermore for this experiment we assumed that the available resources were biotic, and that the inflow to the system was therefore a function of the current amount of resources.* Two species were introd ...
... genotype was advantageous and gave a 15% higher growth rate, the ab gave 5% higher growth rate. Furthermore for this experiment we assumed that the available resources were biotic, and that the inflow to the system was therefore a function of the current amount of resources.* Two species were introd ...
Chapter 11
... Population fluctuations are usually a local phenomenon. A species may show stability over the whole of its range, but be highly variable locally. Populations fluctuate because of time lags in density dependent mechanisms. The carrying capacity of the environment during the most critical time of the ...
... Population fluctuations are usually a local phenomenon. A species may show stability over the whole of its range, but be highly variable locally. Populations fluctuate because of time lags in density dependent mechanisms. The carrying capacity of the environment during the most critical time of the ...
BIO 211 - Robert D. Podolsky
... its current environmental conditions? 11) Conservation managers often try to purchase corridors of undeveloped habitat so that larger preserves are linked into networks. Why? What genetic goals are they aiming for? Describe two effects on population genetic structure. Use the populations of prairie ...
... its current environmental conditions? 11) Conservation managers often try to purchase corridors of undeveloped habitat so that larger preserves are linked into networks. Why? What genetic goals are they aiming for? Describe two effects on population genetic structure. Use the populations of prairie ...
Practice Test Two Key
... identical feeding rates and conversion efficiencies, the one with the ( higher lower ) death rate will dominate. ...
... identical feeding rates and conversion efficiencies, the one with the ( higher lower ) death rate will dominate. ...
Chapter 53: Population Ecology - Biology E
... contrast, in iteroparity, organisms produce relatively few but large offspring each time they reproduce, and they provision the offspring better, a method that may be favored in more dependable environments, where adults are more likely to survive to breed again and competition for resources may be ...
... contrast, in iteroparity, organisms produce relatively few but large offspring each time they reproduce, and they provision the offspring better, a method that may be favored in more dependable environments, where adults are more likely to survive to breed again and competition for resources may be ...
18th_Lecture
... Game Theoretic Approaches Prisoner's dilemma: Two suspects, A and B, are arrested by the police. The police have insufficient evidence for a conviction, and, having separated both prisoners, each of them is offered the same deal: if one testifies for the prosecution against the other and the other ...
... Game Theoretic Approaches Prisoner's dilemma: Two suspects, A and B, are arrested by the police. The police have insufficient evidence for a conviction, and, having separated both prisoners, each of them is offered the same deal: if one testifies for the prosecution against the other and the other ...
14 -The Tidelands
... • Larval and adult preference - larvae may settle at time of high tide at high levels, mobile organisms have a series of behavioral responses that keep them at certain levels of shore • Competition - species may be capable of excluding others from certain levels of the ...
... • Larval and adult preference - larvae may settle at time of high tide at high levels, mobile organisms have a series of behavioral responses that keep them at certain levels of shore • Competition - species may be capable of excluding others from certain levels of the ...
NOTES: Chapter 8.1 - How Populations Change In Size
... Exponential growth occurs in nature only when populations have plenty of food and space, and have no competition or predators. ...
... Exponential growth occurs in nature only when populations have plenty of food and space, and have no competition or predators. ...
View/Open
... most attractive policy to a resource owner. This work forms the foundation of much of the species extinction modelling that has followed. More recently, Swanson (1994) examines ways of making this model more readily applicable to terrestrial species by generalising the analysis to consider terrestri ...
... most attractive policy to a resource owner. This work forms the foundation of much of the species extinction modelling that has followed. More recently, Swanson (1994) examines ways of making this model more readily applicable to terrestrial species by generalising the analysis to consider terrestri ...
Population ecology
... The difference between the birth rate and the death rate is the per capita growth rate ...
... The difference between the birth rate and the death rate is the per capita growth rate ...