Ecology 2
... Bacteria in a Petri dish • Food is placed into a Petri dish, and bacteria is introduced to the food. • The first 2 hours is the “lag phase”, followed with exponential growth. • During the 2nd hour, bacteria begin to reproduce because there is plenty of food available. • The bacteria will grow expone ...
... Bacteria in a Petri dish • Food is placed into a Petri dish, and bacteria is introduced to the food. • The first 2 hours is the “lag phase”, followed with exponential growth. • During the 2nd hour, bacteria begin to reproduce because there is plenty of food available. • The bacteria will grow expone ...
3.2 Adapting to environment
... Natural selection occurs at the individual level, but affects populations. Beneficial traits (from individuals) will be passed on and become more common in the population. Natural selection occurs because of abiotic and biotic factors. Habitat features, predator-prey interactions, and food availabil ...
... Natural selection occurs at the individual level, but affects populations. Beneficial traits (from individuals) will be passed on and become more common in the population. Natural selection occurs because of abiotic and biotic factors. Habitat features, predator-prey interactions, and food availabil ...
Population Ecology
... Carrying Capacity • Maximum population that an environment can sustain • Carrying capacity is limited by several factors: 1) Density dependent - have a stronger impact on dense populations (disease, food availability, predation, competition) 2) Density independent - impact is the same regardless of ...
... Carrying Capacity • Maximum population that an environment can sustain • Carrying capacity is limited by several factors: 1) Density dependent - have a stronger impact on dense populations (disease, food availability, predation, competition) 2) Density independent - impact is the same regardless of ...
Ecology
... Ecological Pyramid- represents the energy that is passed up a food chain or web from lower to higher trophic levels. Trophic levels are feeding positions in a food chain or web. Only about 10% of energy available at one level is available to the next level. Why? Because it is used for metabolic proc ...
... Ecological Pyramid- represents the energy that is passed up a food chain or web from lower to higher trophic levels. Trophic levels are feeding positions in a food chain or web. Only about 10% of energy available at one level is available to the next level. Why? Because it is used for metabolic proc ...
Keystone species powerpoint
... Some populations of organisms can be removed or lessened with little effect. Why do you think it could have little effect with certain organisms? Some populations of organisms are vital to ecosystems. The event of removing them or lessening them would cause a negative effect. It might stop there or ...
... Some populations of organisms can be removed or lessened with little effect. Why do you think it could have little effect with certain organisms? Some populations of organisms are vital to ecosystems. The event of removing them or lessening them would cause a negative effect. It might stop there or ...
The highest level of organization is the biosphere, which consists of
... levels: Atoms organized into molecules, which are organized into cells…all the way to biospheres ...
... levels: Atoms organized into molecules, which are organized into cells…all the way to biospheres ...
Interactions Chapter 4
... • No two species can occupy the same niche. If they do, competition between the two will be intense and one species will outcompete the other • This can lead to: ...
... • No two species can occupy the same niche. If they do, competition between the two will be intense and one species will outcompete the other • This can lead to: ...
chapter 4
... Distinguish among the following species interactions and give one example of each: interspecific competition, predation, and symbiosis. Distinguish between interference competition and exploitation competition. Summarize the competitive exclusion principle. List two strategies species use to reduce ...
... Distinguish among the following species interactions and give one example of each: interspecific competition, predation, and symbiosis. Distinguish between interference competition and exploitation competition. Summarize the competitive exclusion principle. List two strategies species use to reduce ...
Chapter 4 Notes
... conditions in which an organism lives and the way in which the organisms use those conditions. a. A niche includes the organisms place in the food web. b. The type of food it eats. c. The physical conditions needed for survival. d. When and how it reproduces. 2. Species cannot share niches in the sa ...
... conditions in which an organism lives and the way in which the organisms use those conditions. a. A niche includes the organisms place in the food web. b. The type of food it eats. c. The physical conditions needed for survival. d. When and how it reproduces. 2. Species cannot share niches in the sa ...
Understanding species interactions helps to identify impacts and
... There is increasing recognition of the importance of species interactions as a mechanism for environmental change causing population changes in species of interest. This is particularly the case with regard to ...
... There is increasing recognition of the importance of species interactions as a mechanism for environmental change causing population changes in species of interest. This is particularly the case with regard to ...
File
... Resource partitioning – the sharing of resources among organisms that would typical occupy the same niche but instead have willingly partitioned themselves into smaller niches ...
... Resource partitioning – the sharing of resources among organisms that would typical occupy the same niche but instead have willingly partitioned themselves into smaller niches ...
Chapter 8 Word Study - Understanding Populations
... increase by a certain factor in each successive time period - populations that grow faster and faster ...
... increase by a certain factor in each successive time period - populations that grow faster and faster ...
Community Ecology
... All of these feeding relationships result in close interactions between different populations. Interaction ...
... All of these feeding relationships result in close interactions between different populations. Interaction ...
Fill-in-the-blank - Iowa State University
... 17. The main reason polar regions are cooler than the equator is because A) There is more ice at the poles B) Sunlight strikes the poles at a lower angle C) The poles are farther from the sun D) The atmosphere is thicker at the poles E) The poles are permanently tilted away from the sun 18. Uniform ...
... 17. The main reason polar regions are cooler than the equator is because A) There is more ice at the poles B) Sunlight strikes the poles at a lower angle C) The poles are farther from the sun D) The atmosphere is thicker at the poles E) The poles are permanently tilted away from the sun 18. Uniform ...
HONORS-Ecology HW NAME _________________________
... Organisms so similar to one another that they can breed and produce fertile offspring are said to be the same A. genotype B. community C. species D. diversity In an ecosystem no two species can share the same niche in the same habitat at the same time. This is called the ________________________ __ ...
... Organisms so similar to one another that they can breed and produce fertile offspring are said to be the same A. genotype B. community C. species D. diversity In an ecosystem no two species can share the same niche in the same habitat at the same time. This is called the ________________________ __ ...
Biol
... Ch. 9, 11, 28 Population Growth, Human Ecology demography, N, t, r, exponential growth (J-shaped), survivorship curves (I, II, III), how is the human population growing?, life table, carrying capacity (K), Logistic or s-shaped growth, how do r and k selected relate to growth curves?, what types of f ...
... Ch. 9, 11, 28 Population Growth, Human Ecology demography, N, t, r, exponential growth (J-shaped), survivorship curves (I, II, III), how is the human population growing?, life table, carrying capacity (K), Logistic or s-shaped growth, how do r and k selected relate to growth curves?, what types of f ...
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.