Ch.50 Ecology Review Key Concepts: Dispersal and Distribution, Biotic Factors, and Abiotic Factors By Christopher Choe, Paul Bergin, Mario Gagliardo, Michael.

Slides:



Advertisements
Similar presentations
Chapter 3 Section 3 OBJECTIVES:
Advertisements

Ecology & the Environment
Bottom-up control: Resource supply determines trophic structure. Bottom-up control is the influence of producers on the sizes of the trophic levels above.
Chapter 50: An Introduction to Ecology and the Biosphere
The Biosphere.
Chapter 3 Communities, Biomes and Ecosystems
What are the main factors that determine Earth’s climate?
CHAPTER 54 ECOSYSTEMS Copyright © 2002 Pearson Education, Inc., publishing as Benjamin Cummings Section E: Human Impact on Ecosystems and the Biosphere.
Natural Habitats. Outline Populations and Communities Ecosystems Biotic and Abiotic Factors Biomes Biomes of the World Wetlands Natural Environmental.
An Introduction to Ecology and the Biosphere
Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings PowerPoint ® Lecture Presentations for Biology Eighth Edition Neil Campbell.
CHAPTER 6 HUMANS IN THE BIOSPHERE
Global Environmental Issues
How do we influence the environment?
Ecosystems and Communities
Unit 3 What shapes an Ecosystem?
Ecosystems and Communities Chapter 20. The role of Climate  What is climate? –Temperature, precipitation, other environmental factors combine to produce.
Unit 4 Human Impact on the Environment. Population Three factors that affect population: –Number of births –Number of deaths –Number of individuals that.
U NIT 8: E COLOGY KEYSTONE REVIEW. U NIT 8: E COLOGY Describe the levels of ecological organization (from small to big) Organism: A form of life; an animal,
Climates April 25, 2013 Mr. Alvarez. What is Climate?  Weather- The day-to-day conditions of Earth’s atmosphere at a particular time and place  Climate-
Environmental Glossary Vocabulary terms. Acid Rain Acid rain is rain or snow with a pH below 5.6 (it is acidic) Kills plants and can change the pH of.
Video Introduction. Lesson Essential Questions What are the major biomes in the world? What factors are used to classify biomes? How does an organism’s.
What is Human Impact?.
National 5 Biology Course Notes Unit 3 : Life on Earth Part 1 : Biodiversity and distribution of life.
Ecology Part II Some of 3-3, mostly Ch. 4. Water Cycle.
Chapters 3-5 Biology – Miller • Levine
Ecosystems Chapter 54. Ecosystem involves all abiotic and biotic factors in area. Trophic levels - groups in which organisms are placed according to eating.
Biology Unit - Ecology 4.1 Notes.
Review Ecology Chapters 3,4,5, & 6.  What is Ecology?  What is an ecosystem?  The study of interactions between organisms and their environment. The.
4-2 What Shapes an Ecosystem?
Human Impact on Ecosystems

Ecology Organisms. Niche It is an organisms role in the community. It includes: –what it eats –What eats it –What and how much resources it uses Can you.
Pesticides. What ARE They? Pesticides Pesticides are chemicals that kill unwanted organisms, usually those that attack crops. Therefore, they are intended.
Ch. 18- Ecology - The Biosphere. What is Ecology? It is the scientific study of interaction among organisms and between organisms and their environment.
Ecosystems and Communities Chapter The Role of Climate What is climate? –Weather is temperature, precipitation, other environmental factors –It.
Ecosystems and Communities Chapter 4. 4–1 The Role of Climate.
Climate Effects on Species
Ecology and the Biosphere. Ecology is the study of interactions between organisms and the environment. Ecology and the Biosphere.
Principles of Ecology Section 1: Organisms and Their Relationships Section 2: Flow of Energy in an Ecosystem Section 3: Cycling of Matter.
Ecology Chapter 4 : Climate and Communities Chapter 4.
Warm Up 2/10 & 2/11 1.In which trophic level would you place an herbivore? 2.How much energy is transferred from one trophic level to the next? 3.In which.
Ecosystems and Communities. What is Climate? Weather is the day-to-day condition of Earth’s atmosphere at a particular time and place Weather is the day-to-day.
Intro to Ecology. Ecology scientific study of the interactions between organisms and the environment interactions determine distribution of organisms.
Ecology.
Ch. 50 ECOLOGY “Organisms are open systems that interact continuously with their environments” Ecology => the scientific study of the interactions between.
Global Issues Biology CH 6.
An Introduction to Ecology and the Biosphere By: Caitie, Alex, Kara, and Garris.
Intro to Ecology & the Biosphere Chapter 52. Ecology scientific study of the interactions between organisms and the environment an organism’s environment.
1.2 Ecosystems By studying ecosystems now, and in the past, we can better understand what may happen in the future. –Historical ecology is the study of.
An ecosystem is all the living things and nonliving things in a given area.ecosystem An ecosystem can be a pond, a desert, an ocean, a forest, or your.
Chapter 4 Ecosystems and Communities. Copyright Pearson Prentice Hall 4-1 The Role of Climate.
Ecology & Ecosystems Ecology is the study of the interactions between organisms (biotic factors) and their environment (abiotic factors) Abiotic Factors:
A review of information for part 1 and part two… with an introduction to part 3.
The Biosphere By: Ali Ball, Alex Wampler, Holly Rhoden, & Ada Tolliver.
Ecology. Scientific study of the interactions between __________ and their environment.
The Biosphere Chapter 3. What is Ecology? Ecology The study of the interactions among organisms and between organisms their environment.
Ecology Notes. Ecology Ecology is the study of interactions between organisms and their environment.
Ecology & the Environment. Study of the interactions that take place among organisms and their environment. Chapter 20.
Ecology The study of interactions between organisms and the environment (biotic and abiotic factors)
Ecology is These interactions are two-way: organisms are affected by their environment, and by their presence and activities, change their environment.
An Introduction to Ecology and the Biosphere
POLLUTION.
Species Transplants – Abiotic Factors Pages 1084 – 1087 Abbey Burke
CH 4 Ecosystems and Communities
Ecosystems.
AIR BIOLOGY REVIEW Ecology.
Ecosystems and Communities
List everything that could impact the growth of this flower
Keystone Species A species on which in an ecosystem largely depend upon, such that if it were removed, the ecosystem would change drastically. Ex) Beavers-
Presentation transcript:

Ch.50 Ecology Review Key Concepts: Dispersal and Distribution, Biotic Factors, and Abiotic Factors By Christopher Choe, Paul Bergin, Mario Gagliardo, Michael Goglia Dispersal and Distribution, Biotic Factors, and Abiotic Factors By Christopher Choe, Paul Bergin, Mario Gagliardo, Michael Goglia

Dispersal and Distribution  Dispersal is the movement of individuals away from centers of high population density, and results in broad patterns of geographic distribution.  Natural range expansions of organisms demonstrates the influence of dispersal on distribution-  Organisms move into areas where they did not previously exist.  Dispersal-a key factor in limiting distribution (depends on whether or not species transplants are successful or not)  Dispersal is the movement of individuals away from centers of high population density, and results in broad patterns of geographic distribution.  Natural range expansions of organisms demonstrates the influence of dispersal on distribution-  Organisms move into areas where they did not previously exist.  Dispersal-a key factor in limiting distribution (depends on whether or not species transplants are successful or not)

Effects of DDT and other pesticides  Dispersal and distribution are greatly affected by herbicides, pesticides and other chemical products.  Dispersal and distribution normally depend upon the climate and ecosystem; the usual limiting factors are prey and predators.  Poisonous pesticides, if not immediately devastating an ecosystem, will generally pass through it by cycling.  One of their many effects include destroying food sources. This prevents the distribution of new offspring in polluted areas and causes species to move elsewhere. In addition, the areas that would ideally be used for relocation could be poisoned as well, preventing dispersal of organisms.  Dispersal and distribution are greatly affected by herbicides, pesticides and other chemical products.  Dispersal and distribution normally depend upon the climate and ecosystem; the usual limiting factors are prey and predators.  Poisonous pesticides, if not immediately devastating an ecosystem, will generally pass through it by cycling.  One of their many effects include destroying food sources. This prevents the distribution of new offspring in polluted areas and causes species to move elsewhere. In addition, the areas that would ideally be used for relocation could be poisoned as well, preventing dispersal of organisms.

The Greenhouse Effect and Distribution of Species The greenhouse effect is the impact of heat being retained by gases in the atmosphere on the Earth’s climate. Climate change alters distribution in several ways:  Higher air temperatures increase fire risks for vegetation, and lower soil moisture.  Rising sea levels increase the amount of sea water into freshwater or wetland areas, also known as saline intrusion, which occurs mainly in estuaries.  They can also increase the frequency and size of storm surges, a type of disturbance in communities. *Only moderate disturbances can contribute positively to species.  Higher sea surface temperatures can change nutrient cycling within ecosystems. The greenhouse effect is the impact of heat being retained by gases in the atmosphere on the Earth’s climate. Climate change alters distribution in several ways:  Higher air temperatures increase fire risks for vegetation, and lower soil moisture.  Rising sea levels increase the amount of sea water into freshwater or wetland areas, also known as saline intrusion, which occurs mainly in estuaries.  They can also increase the frequency and size of storm surges, a type of disturbance in communities. *Only moderate disturbances can contribute positively to species.  Higher sea surface temperatures can change nutrient cycling within ecosystems.

Biotic Factors  Biotic factors are the living components or all the organisms that are part of an individuals environment.  Such factors may be responsible for the distribution of several species.  Species transplants, for example, can result in the species’ inability to complete a life cycle.This can be a direct result of negative interactions with other species through the form of predation, parasitism, disease, or competition, all biotic factors.  More often, predators and herbivores are the biotic factors involved in limiting distribution.  Biotic factors are the living components or all the organisms that are part of an individuals environment.  Such factors may be responsible for the distribution of several species.  Species transplants, for example, can result in the species’ inability to complete a life cycle.This can be a direct result of negative interactions with other species through the form of predation, parasitism, disease, or competition, all biotic factors.  More often, predators and herbivores are the biotic factors involved in limiting distribution.

Effects of DDT and other Pesticides The threat that DDT poses to living organisms involves biomagnification, and it begins with microorganisms.  While microorganisms are affected by DDT, many tend to keep it inside of them rather than dying. This causes a chain reaction, as they make up the bottom of the food chain.  Likewise, many small creatures on land (ex. Earthworms) can accumulate DDT in their systems, which is harmful to predators that eat them.  In birds, DDT causes the thinning of eggshells.  Humans can also accumulate DDT in their bodies, where it is stored in fatty organs and can be extremely harmful to bodily functions  Pesticides are used to kill unwanted living things, and their effects are not limited to what they are applied.  They can affect many processes of living organisms, including growth, reproduction, neurological development, and the immune system. The threat that DDT poses to living organisms involves biomagnification, and it begins with microorganisms.  While microorganisms are affected by DDT, many tend to keep it inside of them rather than dying. This causes a chain reaction, as they make up the bottom of the food chain.  Likewise, many small creatures on land (ex. Earthworms) can accumulate DDT in their systems, which is harmful to predators that eat them.  In birds, DDT causes the thinning of eggshells.  Humans can also accumulate DDT in their bodies, where it is stored in fatty organs and can be extremely harmful to bodily functions  Pesticides are used to kill unwanted living things, and their effects are not limited to what they are applied.  They can affect many processes of living organisms, including growth, reproduction, neurological development, and the immune system.

Global Warming and Biotic Factors  Global warming is causing polar ice caps to melt, resulting in increased water levels.  Due to the lack of thermal and light energy because of the increasing depth of water in aquatic environments, marine organism populations may decrease.  Because mountain snow packs will melt earlier, probably in the spring, conditions will actually be drier when crops are most in need of the water, in midsummer.  Global warming is entailed by high rates of climate change. Many organisms, primarily plants, won’t be able to survive the changing conditions. This is because of the rapidity of the changing climate, giving populations little time to move into areas with more suitable conditions.  Global warming is causing polar ice caps to melt, resulting in increased water levels.  Due to the lack of thermal and light energy because of the increasing depth of water in aquatic environments, marine organism populations may decrease.  Because mountain snow packs will melt earlier, probably in the spring, conditions will actually be drier when crops are most in need of the water, in midsummer.  Global warming is entailed by high rates of climate change. Many organisms, primarily plants, won’t be able to survive the changing conditions. This is because of the rapidity of the changing climate, giving populations little time to move into areas with more suitable conditions.

Abiotic Factors Abiotic factors are essentially non-living components that effect the living organisms of the freshwater community.  Four abiotic factors are temperature; water, sunlight, and wind. They are the major components of climate, the prevailing weather conditions in an area.  Environmental temperature is an important factor in the distribution of organisms because of its effect on biological processes. An organism ʼ s internal temperature is affected by heat exchange with its environment, and most organisms cannot maintain tissue temperatures more than a few degrees above or below the ambient temperature.  The dramatic variation in water availability among habitats is another important factor in species distribution.  Sunlight provides the energy that drives nearly all ecosystems, although only plants and other photosynthetic organisms use this energy source directly.  Wind amplifies the effects of environmental temperature on organisms by increasing heat loss due to evaporation and convection.  Also, the physical structure, pH, and mineral composition of rocks and soil limit the distribution of plants. Abiotic factors are essentially non-living components that effect the living organisms of the freshwater community.  Four abiotic factors are temperature; water, sunlight, and wind. They are the major components of climate, the prevailing weather conditions in an area.  Environmental temperature is an important factor in the distribution of organisms because of its effect on biological processes. An organism ʼ s internal temperature is affected by heat exchange with its environment, and most organisms cannot maintain tissue temperatures more than a few degrees above or below the ambient temperature.  The dramatic variation in water availability among habitats is another important factor in species distribution.  Sunlight provides the energy that drives nearly all ecosystems, although only plants and other photosynthetic organisms use this energy source directly.  Wind amplifies the effects of environmental temperature on organisms by increasing heat loss due to evaporation and convection.  Also, the physical structure, pH, and mineral composition of rocks and soil limit the distribution of plants.

Effects of DDT and other Pesticides  The effect of DDT and generally all pesticides on abiotic factors in a habitat are similar to those of acid rain.  Once DDT enters a lake, stream, or river it pollutes it, as it is a poisonous substance. Therefore, it effects water availability.  DDT is also highly persistant in soil, having the ability to last up to 15 years.  The effect of DDT and generally all pesticides on abiotic factors in a habitat are similar to those of acid rain.  Once DDT enters a lake, stream, or river it pollutes it, as it is a poisonous substance. Therefore, it effects water availability.  DDT is also highly persistant in soil, having the ability to last up to 15 years.

Acid Rain and Abiotic Factors Acid rain is precipitation containing amounts of nitric and sulfuric acid above normal levels.  Acid rain effects abiotic factors in several different ways:  Because of certain components in acid rain, toxins are mobilized, which take away several vital nutrients and minerals in soil.  The resulting decline in plants dependant on the soil will in turn affect the chain of herbivores dependant on the plants.  Acid rain can directly affect the water availability of habitats, such as lakes.  Water in lakes that becomes acidified is not available for use; it cannot support he variety of life as healthy bodies of water can. Acid rain is precipitation containing amounts of nitric and sulfuric acid above normal levels.  Acid rain effects abiotic factors in several different ways:  Because of certain components in acid rain, toxins are mobilized, which take away several vital nutrients and minerals in soil.  The resulting decline in plants dependant on the soil will in turn affect the chain of herbivores dependant on the plants.  Acid rain can directly affect the water availability of habitats, such as lakes.  Water in lakes that becomes acidified is not available for use; it cannot support he variety of life as healthy bodies of water can.