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ECOLOGY
ECOLOGY

... Keystone Species—a species that has an unusually large effect on its ecosystem ...
Question 1: (1 point) - University of Nebraska–Lincoln
Question 1: (1 point) - University of Nebraska–Lincoln

... individuals. Recent demographic work estimates the annual extinction probability of this population at 10%, because of occaisional failures of rainfall to fill the pond sufficiently to allow reproduction. One proposal for conserving this population is to translocate 2/3 of the individuals to create ...
Ecosystems
Ecosystems

... Answers will vary. Sample answer: The climate of an area refers to the daily atmospheric conditions—the temperature, amount of rainfall, and amount of sunlight in a given area. Ecosystems vary based on the types of living organisms—plants and animals—that can survive in an area. Areas receiving larg ...
Lecture 3: Wildlife Ecological Principles and Population Ecology Part 2
Lecture 3: Wildlife Ecological Principles and Population Ecology Part 2

... driving down population size over a given time. This is the goal for most game species. But, managers should be concerned with the ecological carrying capacity (k) of the land so it is not damaged, and the sociological carrying capacity of the people that have to coexist with these animals. Concern ...


...  The rate of biomass production  Why would this be a big deal?  DQ - Relates directly to the amount of ...
Hantavirus- Yosemite
Hantavirus- Yosemite

... • Humans may become infected when they inhale airborne virus or come into direct contact with infected rodents or their urine, feces, or nests • Other mammal species (cats, dogs, coyotes) may be infected through contact with rodent hosts, but they are not known to transmit the ...
5.1 Communities and ecosystems 5.1.1 Define species, habitat
5.1 Communities and ecosystems 5.1.1 Define species, habitat

... o Parasitism - One organism lives on or inside another organisms and harms it  Parasite obtains all or part of its nutritional needs from the host  Ex. Tapeworms, Fleas, Ticks ...
SAP4 - Barnsley Biodiversity Trust
SAP4 - Barnsley Biodiversity Trust

... underwent a rapid decline from the 1950s to the 1970s, leaving the species absent from most of !ngland. Otters are now returning to many areas through natural re"colonisation, with the expansion of populations from Scotland, Wales, north and west !ngland. This has been assisted in some parts by re"i ...
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17_Conservation_fisheries_GL_web

... Maximize amount of harvest that can be sustained indefinitely ...
Name - Ms. Ottolini`s Biology Wiki!
Name - Ms. Ottolini`s Biology Wiki!

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Lesson 1: Biodiversity TEK: 7.10 (A) (B) (10) Organisms and
Lesson 1: Biodiversity TEK: 7.10 (A) (B) (10) Organisms and

... student is expected to: (A) observe and describe how different environments, including microhabitats in schoolyards and biomes, support different varieties of organisms; (B) describe how biodiversity contributes to the sustainability of an ecosystem. Key Understandings: Biodiversity contributes to t ...
Principles of Population Ecology
Principles of Population Ecology

... Principles of Population Ecology METAPOPULATIONS Occurs because of local differences in • Elevation • Temperature • Amount of precipitation • Soil moisture • Availability of soil minerals Source Habitats: Increase the likelihood of survival & reproductive success for the individuals living there ...
Environment and Ecology - Hawk Mountain Sanctuary
Environment and Ecology - Hawk Mountain Sanctuary

... How do changes in the environment affect the ability of living things to meet their basic needs? How do the living and nonliving parts of ecosystems interact and change over time? How do organisms survive in their environment? How do the characteristics of organisms affect their ability to survive w ...
Mammals of Nevada PDF - The Great Basin Institute
Mammals of Nevada PDF - The Great Basin Institute

... long bushy tail. The legs are generally slimmer than a dogs. Life span: 5 - 7 years Habitat and Range: From the low desert valleys to the alpine ridges, coyotes are found in about any type of habitat where they can find food. They have perhaps the most varied habitat of any animal in Nevada. They ca ...
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LIMITED RESOURCES FORCE US TO CHOOSE

... • Fish and wildlife – Mammals, fish, birds, amphibians, reptiles, mollusks, crustaceans, arthropods, other invertebrates ...
Chapter 6 – Population and Community Ecology
Chapter 6 – Population and Community Ecology

... 20. Define symbiotic relationships. List the three population interactions that are examples of symbiotic relationships. Use the blank table below to indicate the effects on both partners in the four relationships listed: ...
Answer key for natural selection simulation
Answer key for natural selection simulation

... before they could reproduce. In other words, natural selection favored red and blue individuals over green individuals. How might you expect the population to change in subsequent generations? If the selective force remains the same, then fewer green individuals will be present in future generations ...
Spring Peeper, Green Frog, and Wood Frog Management at
Spring Peeper, Green Frog, and Wood Frog Management at

...  Macroinvertebrate surveys (sediments and wetlands)  Turnover and extinction rates:  Extinction: dividing the number of ponds where local extinctions were observed by the number of ponds that were occupied the following year.  Colonization rates: dividing the number of newly occupied ponds by th ...
population - Northwest ISD Moodle
population - Northwest ISD Moodle

... Organism Interactions Limit Population Size • Population sizes are limited not only by abiotic factors, but also are controlled by various interactions among organisms that share a community. ...
Environmental Science
Environmental Science

... • Describe the three main properties of a population. • Describe exponential population growth. • Describe how the reproductive behavior of individuals can affect the growth rate of their population. • Explain how population sizes in nature are regulated. What Is a Population? • A population is a gr ...
Adaptations, Biodiversity, Population CQs
Adaptations, Biodiversity, Population CQs

... c. logistic… carrying capacity d. runaway… equilibrium e. logistic… extinction ...
Chapter 9 Outline
Chapter 9 Outline

... 3. Age structure of a population is usually described as the pre-reproductive stage, the reproductive stage and the post-reproductive stage. A population with a large reproductive stage is likely to increase, while a population with a large post-reproductive stage is likely to decrease. C. No popula ...
ESS Topic 2.6 - Changes
ESS Topic 2.6 - Changes

... A population is a species of organisms living in the same place at the same time. Organisms within a population interbreed and interact with one another and their physical environment throughout their lives. There are 4 main factors controlling population sizes: 1. natality - births increase the pop ...
version
version

... given age that are breeding and the number of female offspring of those breeding females. Belding’s Ground Squirrel reproduction peaks at age 4 years and falls off in older age classes. Reproductive tables differ greatly from species to species. Humans, squirrels and oysters all produce very differe ...
Organism A Organism B Mutualism
Organism A Organism B Mutualism

... harmed (host). The parasite usually lives in or on the host - Predation – when one organism kills and eats another - Competition – occurs two individuals try to use the same resource at the same time and place - Interspecific competition – competition between 2 members of different species - Intrasp ...
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Source–sink dynamics

Source–sink dynamics is a theoretical model used by ecologists to describe how variation in habitat quality may affect the population growth or decline of organisms.Since quality is likely to vary among patches of habitat, it is important to consider how a low quality patch might affect a population. In this model, organisms occupy two patches of habitat. One patch, the source, is a high quality habitat that on average allows the population to increase. The second patch, the sink, is very low quality habitat that, on its own, would not be able to support a population. However, if the excess of individuals produced in the source frequently moves to the sink, the sink population can persist indefinitely. Organisms are generally assumed to be able to distinguish between high and low quality habitat, and to prefer high quality habitat. However, ecological trap theory describes the reasons why organisms may actually prefer sink patches over source patches. Finally, the source-sink model implies that some habitat patches may be more important to the long-term survival of the population, and considering the presence of source-sink dynamics will help inform conservation decisions.
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