• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Energy Transfer through an Ecosystem
Energy Transfer through an Ecosystem

... Matter and energy are neither created nor destroyed but only change in form ...
Bio07_TR__U02_CH4.QXD
Bio07_TR__U02_CH4.QXD

... 3. What is a niche? _____________________________________________________________ 4. In what ways is food part of an organism’s niche? ...
Concepts in contemporary ecological theory
Concepts in contemporary ecological theory

... despite the long period necessary to return to stability they continue to persist as systems because their parts do not change.  On the other hand, ecosystems may be highly stable – they return to equilibrium quickly – but have low resilience because they are likely to collapse. ...
Interrelationships Between Organisms
Interrelationships Between Organisms

... Date: ______________ ...
Changes to Populations
Changes to Populations

... are in danger of being killed. ...
Notes: Populations and Carrying Capacity
Notes: Populations and Carrying Capacity

... Example: Seychelles Paradise Flycatcher needs one acre of mixed forest per breeding pair. They live on the little island of _______________________. A population remains at its ________________ capacity when it’s in ________________ (number of individuals added and the number of individuals that lea ...
Ecology Unit Vocabulary List
Ecology Unit Vocabulary List

... Ecology Unit Vocabulary List Ecology = the study of how organisms interact with their environment. Ecologist = scientist who studies relationships between organisms and environments Ecosystem = a community of organisms that live in a particular area, along with their nonliving surroundings Habitat = ...
Populations
Populations

... Competition is the relationship between two species (or individuals) in which both species (or individuals) attempt to use the same limited resource such that both are negatively affected by the relationship. Members of the same species must compete with each other because they require the same reso ...
Latham`s Snipe - Planet of Birds
Latham`s Snipe - Planet of Birds

... Nechaev, 1994), and eastern Australia. Commonly recorded through the wetter parts of eastern Australia, including throughout Tasmania and the Bass Strait Islands. Occasional records further west on Australian mainland, as well as Norfolk I., Lord Howe I. and, possibly, Macquarie I. (Higgins and Davi ...
Chapter 4 Notes
Chapter 4 Notes

... b. Commensalism – one member benefits and the other is neither helped nor harmed. i. Ex. Whales and barnacles c. Parasitism – one organism lives inside or on another organism and harms it. i. Ex. Dog and heartworms ...
Carrying Capacity
Carrying Capacity

... Carrying Capacity Notes Population Density is the measurement of a population per unit area. Populations are often measured in organisms per mile or organisms per acre. For example, deer populations might be 250 deer/mile. Healthy populations must maintain a certain population density. Too low of a ...
Principles of evolution
Principles of evolution

... • The number of individuals that a given area can support • Mankind has been very effective in increasing the carrying capacity of the earth. ...
Title of Unit: Ecology Course and Grade Level: 9th Grade Biology
Title of Unit: Ecology Course and Grade Level: 9th Grade Biology

... Interdependence of life: ecosystems Each organism on Earth depends on other living and nonliving things in its environment. ...
Living Things in Their Environment
Living Things in Their Environment

... the two terms. Stress that a niche is much like an occupation, or the organism’s role, while the habitat is its home. Describe an Animal’s Habitat and Niche (7-12 minutes) Hand out several Natural History magazines. Ask students to quickly pick out any organism from the magazine. (It can be a plant, ...
Unit 5
Unit 5

... 2.- Biosphere is an environmental mosaic in which several abiotic factors affect the distribution and abundance of organism of organism: Temperature, water quality and availability, light intensity, wind, soil, characteristics, and less predictable disturbances such as fire. a) Major Terrestrial Bio ...
ch04_sec1
ch04_sec1

... types of species they have. ...
Populations
Populations

... species that can mate and produce fertile offspring. • It is important to study populations (and population sizes) for many reasons: – To monitor endangered species – To monitor environmental health – To estimate demands for natural resources – To monitor change in areas over time – To make informed ...
summary notes the biosphere
summary notes the biosphere

... food or water, disease, build up of toxic wastes and lack of space. Competition occurs when 2 or more individuals need a resource (like food or shelter) that is in short supply. When 2 species compete for a resource the result will be a reduction in the population size of the poorer competitor. Nutr ...
Population Biology
Population Biology

... DD limiting factors are more often biological rather than physical.  Predation and food: Often hard to determine what effect predation has on a population.  Predation as a DD factor: we will work on an activity with this.  Is predation beneficial? ...
File
File

... The largest population that an area can support A process where individuals that are better adapted to their environment are more likely to survive than others A behavior or physical characteristic that allows an organism to survive or reproduce in its environment ...
Brown Thornbill (King Island) - Australia`s Threatened Birds
Brown Thornbill (King Island) - Australia`s Threatened Birds

... The principal threat is currently loss of remaining habitat, primarily from fire but also from clearing. Any remain- ...
Population
Population

... All populations have the ability to grow rapidly over time Populations tend to remain about the same size ...
Habitat Control (1)
Habitat Control (1)

... •Habitat is the area or natural environment in which an organism or population normally lives. A habitat is made up of physical factors such as soil, moisture, range of temperature, and availability of light as well as biotic factors such as the availability of food. •A habitats quality is directly ...
Document
Document

... a. An organism’s niche is only the part of its habitat that it eats. b. An organism’s habitat is a location. c. Habitat and niche are the same thing. d. An organism’s niche is outside its habitat. _____ 7. Which of the following is part of an American bison’s niche? a. grasslands c. water b. gray wo ...
Unit 6 Ecology Organizer
Unit 6 Ecology Organizer

... *I can use characteristics of ecosystems to determine what organisms would be most suited for life in each of them. _______ *I can explain how competition limits population growth. _______ *I can describe how organisms obtain energy for life. _______ *I can explain how organisms interact. _______ *I ...
< 1 ... 105 106 107 108 109 110 111 112 113 ... 129 >

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.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report