Section 1: What Is an Ecosystem? Preview • Bellringer • Key Ideas
... factor in each successive time period. This type of increase causes the J-shaped curve of exponential growth. In exponential growth, population size grows slowly when it is small. But as the population gets larger, growth speeds up. Populations do not grow unchecked forever. Factors such as availabi ...
... factor in each successive time period. This type of increase causes the J-shaped curve of exponential growth. In exponential growth, population size grows slowly when it is small. But as the population gets larger, growth speeds up. Populations do not grow unchecked forever. Factors such as availabi ...
Log-normal distribution
... An attempt to predict relative-abundance distributions from neutral models of birth, death, immigration, extinction, and speciation Assumptions: individuals play a zero-sum game within a community and have equivalent per capita demographic rates Immigration from a source pool occurs at random; other ...
... An attempt to predict relative-abundance distributions from neutral models of birth, death, immigration, extinction, and speciation Assumptions: individuals play a zero-sum game within a community and have equivalent per capita demographic rates Immigration from a source pool occurs at random; other ...
Pass It On! Gr. 4-6
... Predation results in an energy gain but at the cost of the energy expenditure while getting the food. Most Predators choose Prey that is the largest they can obtain without too much risk of injury to themselves. When hunger is not an issue then Predators usually do not spend the energy (Sharks in ta ...
... Predation results in an energy gain but at the cost of the energy expenditure while getting the food. Most Predators choose Prey that is the largest they can obtain without too much risk of injury to themselves. When hunger is not an issue then Predators usually do not spend the energy (Sharks in ta ...
CURRENT ZOOLOGY Vol. 60 (2014) Index
... Special Column The Role of Behavior in Conservation Editor: Ximena J. NELSON, University of Canterbury, Christchurch 8001, New Zealand Editorial Animal Behavior can inform conservation policy, we just need to get on with the job – or can it? ... ...................................................... ...
... Special Column The Role of Behavior in Conservation Editor: Ximena J. NELSON, University of Canterbury, Christchurch 8001, New Zealand Editorial Animal Behavior can inform conservation policy, we just need to get on with the job – or can it? ... ...................................................... ...
Lesson 2
... Population Sizes (cont.) • Disease, space, predators, and food are some of the factors that limit the carrying capacity of an ecosystem. • The carrying capacity of an environment is not constant because it increases and decreases as the amount of available resources increases and decreases. • When ...
... Population Sizes (cont.) • Disease, space, predators, and food are some of the factors that limit the carrying capacity of an ecosystem. • The carrying capacity of an environment is not constant because it increases and decreases as the amount of available resources increases and decreases. • When ...
National Science Education Standards
... the point of view of individual organisms to recognizing patterns in ecosystems (...) For example, students should broaden their understanding from the way one species lives in its environment to populations and communities of species and the ways they interact with each other and with their environ ...
... the point of view of individual organisms to recognizing patterns in ecosystems (...) For example, students should broaden their understanding from the way one species lives in its environment to populations and communities of species and the ways they interact with each other and with their environ ...
Slide 1
... Simulations generally examine the influence of small changes in predator & prey populations away from equilibria Two criteria for assessing stability: Do populations return to equilibrium sizes? How long does the system take to return to equilibrium? The way in which the matrices are constructed (e. ...
... Simulations generally examine the influence of small changes in predator & prey populations away from equilibria Two criteria for assessing stability: Do populations return to equilibrium sizes? How long does the system take to return to equilibrium? The way in which the matrices are constructed (e. ...
Measuring Biodiversity
... • Simpson Index - It takes into account the number of species present, as well as the relative abundance of each species. It represents the probability that two randomly selected individuals in the habitat belong to the same species. ...
... • Simpson Index - It takes into account the number of species present, as well as the relative abundance of each species. It represents the probability that two randomly selected individuals in the habitat belong to the same species. ...
Food chain and web 1food webs and food chains
... • The energy flow from one trophic level to the other is know as a food chain • A food chain is simple and direct • It involves one organism at each trophic level ...
... • The energy flow from one trophic level to the other is know as a food chain • A food chain is simple and direct • It involves one organism at each trophic level ...
Biology 1A Mid-Term Exam Study Guide Chapter 1 Main Concepts
... o Matter is _Recycled_ throughout an ecosystem. o The Hydrologic (Water) Cycle – what are the steps involved? Evaporation and Transpiration, Condensation, Precipitation and repeat. o The Carbon Cycle – How is carbon stored in the ecosystem? In the air as Carbon Dioxide, underground as fossil fuels a ...
... o Matter is _Recycled_ throughout an ecosystem. o The Hydrologic (Water) Cycle – what are the steps involved? Evaporation and Transpiration, Condensation, Precipitation and repeat. o The Carbon Cycle – How is carbon stored in the ecosystem? In the air as Carbon Dioxide, underground as fossil fuels a ...
Biodiversity_F06
... • Biodiversity refers to the number and variety of species, of ecosystems, and of their genetic variation • About 1.4-1.8 million species are known to science. Because many species are undescribed, some 10-30 million species likely exist at present • Biodiversity is threatened by the “sinister sexte ...
... • Biodiversity refers to the number and variety of species, of ecosystems, and of their genetic variation • About 1.4-1.8 million species are known to science. Because many species are undescribed, some 10-30 million species likely exist at present • Biodiversity is threatened by the “sinister sexte ...
Sample PowerPoint
... • Three important interaction among living things (biotic elements) include: competition, predation, and mutualism. • Competition occurs when more than one organism tries to obtain the same basic resources in the same habitat. • This limits the number of organisms in an ecosystem. • Predation refers ...
... • Three important interaction among living things (biotic elements) include: competition, predation, and mutualism. • Competition occurs when more than one organism tries to obtain the same basic resources in the same habitat. • This limits the number of organisms in an ecosystem. • Predation refers ...
Ecosystems
... among organisms, populations, communities, ecosystems and the biosphere. 1. An organism is any form of life. The cell is the basic unit of life in organisms. 2. Organisms are classified into species, which groups organisms similar to each other together. 3. Sexually reproducing organisms are classif ...
... among organisms, populations, communities, ecosystems and the biosphere. 1. An organism is any form of life. The cell is the basic unit of life in organisms. 2. Organisms are classified into species, which groups organisms similar to each other together. 3. Sexually reproducing organisms are classif ...
Quantifying the evidence for biodiversity effects on ecosystem
... Rey Benayas, J.M., Newton, A.C., Diaz, A. & Bullock, J.M. (2009) Enhancement of biodiversity and ecosystem services by ecological restoration: a meta-analysis. Science, 325, 1121-1124. ...
... Rey Benayas, J.M., Newton, A.C., Diaz, A. & Bullock, J.M. (2009) Enhancement of biodiversity and ecosystem services by ecological restoration: a meta-analysis. Science, 325, 1121-1124. ...
pptx
... organisms currently living near each other and about which it is interesting to talk” (MacArthur 1971) ...
... organisms currently living near each other and about which it is interesting to talk” (MacArthur 1971) ...
An Organism`s Niche
... • An ecosystem is all of the organisms living in an area together with their physical environment ...
... • An ecosystem is all of the organisms living in an area together with their physical environment ...
Student Markscheme - Learning on the Loop
... The student is able to investigate indepth a pattern in an ecological community, with supervision. The report includes evidence of: Analysing and interpreting information about a NZ forest community. - Information may come from direct observations, collection of field data, tables, graphs, resourc ...
... The student is able to investigate indepth a pattern in an ecological community, with supervision. The report includes evidence of: Analysing and interpreting information about a NZ forest community. - Information may come from direct observations, collection of field data, tables, graphs, resourc ...
Topic 2.1 - mclain
... – Productivity are rates of flow, where biomass are stores at one time. – Shows actual energy transferred. – Energy from solar radiation can be added. ...
... – Productivity are rates of flow, where biomass are stores at one time. – Shows actual energy transferred. – Energy from solar radiation can be added. ...
Sustaining Aquatic Biodiversity
... Repeated Invasions by Alien Species? Collectively, world’s largest body of freshwater Invaded by at least 162 nonnative species ...
... Repeated Invasions by Alien Species? Collectively, world’s largest body of freshwater Invaded by at least 162 nonnative species ...
Chapter 3
... The strong Gaia hypothesis: life controls the earth’s life-sustaining processes. The weak Gaia hypothesis: life influences the earth’s life-sustaining processes. ...
... The strong Gaia hypothesis: life controls the earth’s life-sustaining processes. The weak Gaia hypothesis: life influences the earth’s life-sustaining processes. ...
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.