5-2
... DDLF – limiting factor that depends on population size These factors become limiting only when the population density reaches a certain level Usually occurs when population is large and dense Ex: competition, predation, parasitism, disease ...
... DDLF – limiting factor that depends on population size These factors become limiting only when the population density reaches a certain level Usually occurs when population is large and dense Ex: competition, predation, parasitism, disease ...
Evolution
... •Galapagos finches that Darwin observed have different beaks based on the food that they eat •Darwin believed the differences in their beaks were due to ...
... •Galapagos finches that Darwin observed have different beaks based on the food that they eat •Darwin believed the differences in their beaks were due to ...
Human Impact
... • Hardy-Weinberg principle – the frequencies of alleles in a population do not change unless the evolutionary forces act on the population. ...
... • Hardy-Weinberg principle – the frequencies of alleles in a population do not change unless the evolutionary forces act on the population. ...
131 Lecture 1.ppt [Read
... Ecology covers a hierarchy of levels of organisation, from individual to biosphere There are distinctive (emergent) properties of ecological systems at each of these scales that can only be understood by studying them at the appropriate scale: a strictly reductionist approach is invalid If an ecolog ...
... Ecology covers a hierarchy of levels of organisation, from individual to biosphere There are distinctive (emergent) properties of ecological systems at each of these scales that can only be understood by studying them at the appropriate scale: a strictly reductionist approach is invalid If an ecolog ...
General Ecology: Lecture 4
... List/explain (1-2 sentences each) several factors that might cause a population to oscillate. Be familiar with the specific examples given in class for oscillations due to environmental conditions and oscillations due to parasites. ...
... List/explain (1-2 sentences each) several factors that might cause a population to oscillate. Be familiar with the specific examples given in class for oscillations due to environmental conditions and oscillations due to parasites. ...
SADDLEBACK COLLEGE BIOLOGY 20 EXAMINATION 4 STUDY
... 6. Compare exponential and logistic population growth. Under what conditions might each occur? What might limit growth? 7. Know the different Life history strategies (r and k-selected species). 8. Diagram and explain the three types of survivorship curves. 9. Explain how the 4 major traits that affe ...
... 6. Compare exponential and logistic population growth. Under what conditions might each occur? What might limit growth? 7. Know the different Life history strategies (r and k-selected species). 8. Diagram and explain the three types of survivorship curves. 9. Explain how the 4 major traits that affe ...
Mexican Biodiversity
... What does biodiversity mean? Biodiversity, or biological diversity, is the variety of life. This recent concept includes different levels of biological organization. It considers the diversity of species of plants and animals that live in one place, their genetic variability, the ecosystems that the ...
... What does biodiversity mean? Biodiversity, or biological diversity, is the variety of life. This recent concept includes different levels of biological organization. It considers the diversity of species of plants and animals that live in one place, their genetic variability, the ecosystems that the ...
Chapter 4 * Population Ecology
... (nonliving) and includes weather events – drought, flooding, extreme heat or cold, tornadoes, and hurricanes. – Density-dependent factors = usually biotic (living) – predation, disease, parasites, and competition. • Isle Royale, U.P. Michigan ...
... (nonliving) and includes weather events – drought, flooding, extreme heat or cold, tornadoes, and hurricanes. – Density-dependent factors = usually biotic (living) – predation, disease, parasites, and competition. • Isle Royale, U.P. Michigan ...
Humans and Biodiversity Powerpoint
... Growth Demography- examines characteristics of human populations and attempts to explain how those populations will change over time. Birth rates, death rates, and the age structure of a population will help predict why some countries have high growth rates while other countries grow more slowly. ...
... Growth Demography- examines characteristics of human populations and attempts to explain how those populations will change over time. Birth rates, death rates, and the age structure of a population will help predict why some countries have high growth rates while other countries grow more slowly. ...
Examples of Animal Adaptations
... genetic makeup…Mutations can cause variation). 2. Variation is inherited. 3. More species are produced than will live. 4. Those species that survive to reproduce will pass their characteristics (genes) on to the next generation those that don’t become extinct. 5. Over time, characteristics and behav ...
... genetic makeup…Mutations can cause variation). 2. Variation is inherited. 3. More species are produced than will live. 4. Those species that survive to reproduce will pass their characteristics (genes) on to the next generation those that don’t become extinct. 5. Over time, characteristics and behav ...
Chapter 8- Population Ecology - Pikeville Independent Schools
... Compare a J-shaped growth curve with a S-shaped growth curve and comment on the factors that produce the sigmoid (Sshaped) curve. ...
... Compare a J-shaped growth curve with a S-shaped growth curve and comment on the factors that produce the sigmoid (Sshaped) curve. ...
3.2 Adapting to environment
... Biodiversity refers to the variety and variation of organisms in an ecosystem, biome, or the entire Earth. It is closely linked to primary productivity, which is the amount of energy provided by the producers in an ecosystem. A greater number of producers can support a more complex and diverse commu ...
... Biodiversity refers to the variety and variation of organisms in an ecosystem, biome, or the entire Earth. It is closely linked to primary productivity, which is the amount of energy provided by the producers in an ecosystem. A greater number of producers can support a more complex and diverse commu ...
Evolution_PPT
... • Biochemical similarities (genetic)- provides evidence for evolution- All organisms have the same DNA and RNA ...
... • Biochemical similarities (genetic)- provides evidence for evolution- All organisms have the same DNA and RNA ...
Stuff you need to know – Week 9 Populations: definition of, density
... Stuff you need to know – Week 9 ...
... Stuff you need to know – Week 9 ...
Populations (week 5)
... competing species within a simple, uniform, closed system interact, one species will eventually completely exclude the other: In patchy environments where each species can find local conditions that favour its survival and propagation, a species may persist even when its population densities are red ...
... competing species within a simple, uniform, closed system interact, one species will eventually completely exclude the other: In patchy environments where each species can find local conditions that favour its survival and propagation, a species may persist even when its population densities are red ...
Population Size
... Population Density The number of individuals per unit area (for terrestrial organisms) or volume (for aquatic organisms) is termed the population density. At low population densities, individuals are spaced well apart. Examples: territorial, solitary mammalian species such as tigers and plant speci ...
... Population Density The number of individuals per unit area (for terrestrial organisms) or volume (for aquatic organisms) is termed the population density. At low population densities, individuals are spaced well apart. Examples: territorial, solitary mammalian species such as tigers and plant speci ...
Populations
... Species put in an area by humans. Much food. Few if any predators Grow exponentially. ...
... Species put in an area by humans. Much food. Few if any predators Grow exponentially. ...
midt #1/96
... the pesticide. This time less than 1% of the pests are killed. What do you think happened? a. The behavior of the insects changed and they flew away. b. The first application selected for insecticide–resistant genotypes. c. The insecticide caused mutations for resistance and a new species of pestici ...
... the pesticide. This time less than 1% of the pests are killed. What do you think happened? a. The behavior of the insects changed and they flew away. b. The first application selected for insecticide–resistant genotypes. c. The insecticide caused mutations for resistance and a new species of pestici ...
Biological Diversity
... • Three warbler species feed on spruce budworm. • The tree is the habitat. • Each has a unique niche where they prefer to gather food. • There is some overlap of niche ...
... • Three warbler species feed on spruce budworm. • The tree is the habitat. • Each has a unique niche where they prefer to gather food. • There is some overlap of niche ...