Evolution/ Natural selection
... Organisms were thought to be perfectly adapted to their environment. ...
... Organisms were thought to be perfectly adapted to their environment. ...
Ecology
... • An Ecologist is basically a Biologist who studies Ecology exclusively. • Ecologist must be a master of many different fields, including mathematics, chemistry, physics, geology, and other branches of biology ...
... • An Ecologist is basically a Biologist who studies Ecology exclusively. • Ecologist must be a master of many different fields, including mathematics, chemistry, physics, geology, and other branches of biology ...
Slide 1
... Physical & chemical conditions of habitat Availability of food & resources (type, amount, etc.) History of habitat & species Traits that help species survive in habitat Interactions among species Physical disturbances ...
... Physical & chemical conditions of habitat Availability of food & resources (type, amount, etc.) History of habitat & species Traits that help species survive in habitat Interactions among species Physical disturbances ...
powerpoint notes - Social Circle City Schools
... reproduce at a constant rate. Not realistic because populations usually a limit to their resources. ...
... reproduce at a constant rate. Not realistic because populations usually a limit to their resources. ...
Populations and Communities
... Survival Rate, lx: proportion of the population surviving to age x. Fecundity Rate, mx: average number of young produced per individual for age x. Net Reproductive Rate, R0: average number of young produced by an individual in its ...
... Survival Rate, lx: proportion of the population surviving to age x. Fecundity Rate, mx: average number of young produced per individual for age x. Net Reproductive Rate, R0: average number of young produced by an individual in its ...
Chapter 22
... they interact. These systems import and export matter and energy. The food web, or food chain, refers to the flow of energy from one level to another in an ecosystem. Primary producers are plants and animals that are able to create carbohydrates from carbon dioxide and water and light energy thr ...
... they interact. These systems import and export matter and energy. The food web, or food chain, refers to the flow of energy from one level to another in an ecosystem. Primary producers are plants and animals that are able to create carbohydrates from carbon dioxide and water and light energy thr ...
20.1: Species Interactions, cont.
... Competition- occurs when two organisms fight for the same limited resources (2 types) • Intraspecific competition - competition between organisms of same species o Example: Zebras fighting for mates • Interspecific competition- competition between different species o Example: Different types of bar ...
... Competition- occurs when two organisms fight for the same limited resources (2 types) • Intraspecific competition - competition between organisms of same species o Example: Zebras fighting for mates • Interspecific competition- competition between different species o Example: Different types of bar ...
Ecology Part I 1516
... 2. What is the difference between a population and a community? 3. How is a community different from an ecosystem? How are they similar? ...
... 2. What is the difference between a population and a community? 3. How is a community different from an ecosystem? How are they similar? ...
Chp 20 Webs - AdventuresinScienceEducation
... • Organisms tend to compete for available food, light, water, roosting sites, nesting sites, mates etc. • Some organisms are more successful at competing with other organisms and are said to limit the distribution of the other species. ...
... • Organisms tend to compete for available food, light, water, roosting sites, nesting sites, mates etc. • Some organisms are more successful at competing with other organisms and are said to limit the distribution of the other species. ...
keystone species are predators Regulation of community structure…
... drama of a single predator-prey interaction ...
... drama of a single predator-prey interaction ...
Population Collapses
... Populations of large mammals are particularly vulnerable. Unlike most fish species, the biotic growth potential of large mammals is sufficiently low to mean that heavy harvesting can drive the stock to zero. A well-known example is the American plains buffalo, which has survived only through a combi ...
... Populations of large mammals are particularly vulnerable. Unlike most fish species, the biotic growth potential of large mammals is sufficiently low to mean that heavy harvesting can drive the stock to zero. A well-known example is the American plains buffalo, which has survived only through a combi ...
Ecology Clicker Challenge (Final Review)
... a. They cool the atmosphere by allowing heat to escape. b. They heat the atmosphere by forming holes in the ozone. c. They block incoming radiation from the sun. d. They slow the loss of heat by trapping it. 8. Which of the following terms best describes all the bears, squirrels, trees, rocks, and s ...
... a. They cool the atmosphere by allowing heat to escape. b. They heat the atmosphere by forming holes in the ozone. c. They block incoming radiation from the sun. d. They slow the loss of heat by trapping it. 8. Which of the following terms best describes all the bears, squirrels, trees, rocks, and s ...
Keystone Species How do prey avoid predators? Spatial refugia
... • Keystone species effect is disproportionate to its’ abundance ...
... • Keystone species effect is disproportionate to its’ abundance ...
does metabolic theory apply to community ecology? it`s a matter of
... 0.0001). Species number and functional group composition explained 68% of this variance in total biomass (multiple regression: F28, 139 5 10.4, P , 0.0001). The scaling approach, which works so well across large scales of body size, predicts at most 12% of the variance in various ecological processe ...
... 0.0001). Species number and functional group composition explained 68% of this variance in total biomass (multiple regression: F28, 139 5 10.4, P , 0.0001). The scaling approach, which works so well across large scales of body size, predicts at most 12% of the variance in various ecological processe ...
Ch 6 - fieldbio
... • Species coexistence = neither species fully excludes the other from resources, so both live side by side – This produces a stable point of equilibrium, with stable population sizes – Species adjust to minimize competition by using only a part of the available resource ...
... • Species coexistence = neither species fully excludes the other from resources, so both live side by side – This produces a stable point of equilibrium, with stable population sizes – Species adjust to minimize competition by using only a part of the available resource ...
Objectives: 1. Explain the difference between abiotic and biotic
... • Abiotic Factors: The non-living factors in an organism’s environment. ...
... • Abiotic Factors: The non-living factors in an organism’s environment. ...
Ecology-Vocabulary
... You will be given a blank map of the world and different locations for each biome. Color code each biome to its corresponding location- hand it at the end of the period. ...
... You will be given a blank map of the world and different locations for each biome. Color code each biome to its corresponding location- hand it at the end of the period. ...
S-8-9-2_Species Interactions Quiz
... Certain types of algae live inside reef-building coral. The algae provide the coral with nutrients in return for protection. 2. Commensalism Barnacles attach themselves to a whale’s skin. The barnacles benefit from constant movement of water past the swimming whale, which carries food particles to t ...
... Certain types of algae live inside reef-building coral. The algae provide the coral with nutrients in return for protection. 2. Commensalism Barnacles attach themselves to a whale’s skin. The barnacles benefit from constant movement of water past the swimming whale, which carries food particles to t ...
Chapter 8: Population Ecology
... 1. Density-independent population controls affect a population’s size regardless of its density. These are abiotic factors in the community. 2. Density-dependent factors population controls have a greater affect on the population as its density increases. Infectious disease is an example of density- ...
... 1. Density-independent population controls affect a population’s size regardless of its density. These are abiotic factors in the community. 2. Density-dependent factors population controls have a greater affect on the population as its density increases. Infectious disease is an example of density- ...
Ecological Interactions Study guide
... Adaptations create a unique niche that is not shared by organisms of another species, thus reducing competition for resources between species. 12. What are two adaptations that prey organisms have developed to protect themselves? Describe how each adaptation protects the organism. Camouflage—the mor ...
... Adaptations create a unique niche that is not shared by organisms of another species, thus reducing competition for resources between species. 12. What are two adaptations that prey organisms have developed to protect themselves? Describe how each adaptation protects the organism. Camouflage—the mor ...
Fall Ecology Unit 1
... Complete the review below on separate sheets of lined paper. 1. What is the approximate age of the Earth? 2. How have major catastrophic events shaped Earth’s history over time? 3. Briefly, and very generally, describe how Earth (including the atmosphere, land masses, and species) has changed over t ...
... Complete the review below on separate sheets of lined paper. 1. What is the approximate age of the Earth? 2. How have major catastrophic events shaped Earth’s history over time? 3. Briefly, and very generally, describe how Earth (including the atmosphere, land masses, and species) has changed over t ...
Populations
... Competing for access to resources Two types: Intraspecific, between individuals of same species Interspecific, between individuals of different species ...
... Competing for access to resources Two types: Intraspecific, between individuals of same species Interspecific, between individuals of different species ...
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.