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# Unit 3: Biology
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# Unit 3: Biology
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## Terms
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- `Habitat`: Placce where organisms live
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- `Biotic`: Living components (their remains AND features)
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- Bears, insects, micro-organisms, nests
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- `Abiotic`: Non-living components
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- Physical/chemical components
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- Temperature, wind, humidity, precipitation, minerals, air pressure
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- `Sustainability`: **The ability to maintain natural ecological conditions without interruption, weakening, or loss of value.**
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- `Community`: Individual from all of the DIFFERENT populations (communities of different species)
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- `Ecosystem`: Term given to the community and its interactions with the abiotic environment
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- `Sustainable Ecosystem`: An ecosystem that is maintained through natural processes
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- `Ecological niche`: Every species interacts with other species and with its environment in a unique way. This is its role in an ecosystem (e.g. what it eats, what eats it, how it behaves, etc.)
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- `Biodiversity`: The variety of life in a particular ecosystem, also known as biological diversity.
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- Canada is home to about 140 000 to 200 000 species of plants and animals. Only 71 000 have been identified.
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- `Species Richness`: the number of species in an area.
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- Diverse ecosystem = high species richness.
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- Higher close to the equator.
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- Ex. Amazon rainforest home to more than 200 species of hummingbirds, Ontario only has a single species.
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- `Population`: A group of organisms of one species that interbreed and live in the same place and time.
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- Population often change due to both **natural and artifical** factors (human activity).
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- `Carry Capcity`: The maximum population size of a **particular species** that a given ecosystem can sustain.
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- `Pollution`: harmful comtaminants released into the enviornment.
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- `Bioremediation`: the use of micro-organisms to consume and break down environmental pollutants.
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- `Photosynthesis`: The process in which the Sun’s energy (LIGHT) is converted (put together with) into chemical energy AS GLUCOSE (sugar).
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- `Succession`: The gradual and usually predictable changes in the composition of a community and the abiotic condtions following a disturbance.
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- `Producer`: Organism that makes its own energy-rich food using the Sun’s energy.
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- `Consumer`: Organism that obtains its energy from consuming other organisms.
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- `Eutrophication`: Overfertilzation of staganat bodies of water with nutrients
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- `Heterotrophs` Organisms that feed on others
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- `Bioaccumulation`: The process by which **toxins accumulate in the bodies** of animals. (Eg, DDT). **They cannot be easily excreted from the body.**
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- `Bioamplification`: The **increase in concentration of a substance** such as a pesticide as we move up trophic level within a food web. **It happens because of bioaccumulation**. (Sometimes called `biomagnification`).
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- `Oligotrophic` Bodies of water that are **low** in nutrients. (clear water, opposite to `eutrophic`).
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- `Watershed` (drainage basin): Area of land where **ALL WATER** drains to a single river or lake.
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- `Invasive Species`: A non-native species whose intentional or accidental introduction negatively impacts the natural environment.
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## The Spheres of Earth
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## The Spheres of Earth
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### Atmosphere
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### Atmosphere
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- The layer of `gases` above Earth's surface, extending upward for hundreds of kilometers.
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- The layer of `gases` above Earth's surface, extending upward for hundreds of kilometers.
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@ -349,44 +383,12 @@
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- Consists of:
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- Consists of:
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- **Rocks and minerals that make up mountains, ocean floors, and Earth's solid landscape**
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- **Rocks and minerals that make up mountains, ocean floors, and Earth's solid landscape**
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-Thickness: **50 - 150km**.
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-Thickness: **50 - 150km**.
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### Terms
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- `Biotic`: Living components (their remains AND features)
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- Bears, insects, micro-organisms, nests
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- `Abiotic`: Non-living components
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- Physical/chemical components
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- Temperature, wind, humidity, precipitation, minerals, air pressure
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- `Sustainability`: **The ability to maintain natural
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ecological conditions without interruption,
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weakening, or loss of value.**
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- `Community`
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- Individual from all of the DIFFERENT populations (communities of different species)
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- `Ecosystem`
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- Term given to the community and its interactions with the abiotic environment
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- `Sustainable Ecosystem`
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## Energy Flow
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- An ecosystem that is maintained through natural processes
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- `Law of Conservation of Energy`: Energy **can not** be **created** or **destroyed**. It can only be transformed or transfeered.
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- `Ecological niche`:
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- Note that Photosynthesis and Cellular respiration are nearly **THE EXACT OPPOSITE**.
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- Every species interacts with other species and with its environment in a unique way. This is its role in an ecosystem (e.g. what it eats, what eats it, how it behaves, etc.)
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### Types of Energy
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- `Biodiversity`: The variety of life in a particular ecosystem, also known as biological diversity.
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- Canada is home to about 140 000 to 200 000 species of plants and animals. Only 71 000 have been identified.
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- `Species Richness`: the number of species in an area.
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- Diverse ecosystem = high species richness.
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- Higher close to the equator.
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- Ex. Amazon rainforest home to more than 200 species of hummingbirds, Ontario only has a single species.
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- `Population`: A group of organisms of one species that interbreed and live in the same place and time.
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- Population often change due to both **natural and artifical** factors (human activity).
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- `Carry Capcity`: The maximum population size of a **particular species** that a given ecosystem can sustain.
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- `Pollution`: harmful comtaminants released into the enviornment.
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- `Bioremediation`: the use of micro-organisms to consume and break down environmental pollutants.
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- `Photosynthesis`: The process in which the Sun’s energy (LIGHT) is converted (put together with) into chemical energy AS GLUCOSE (sugar).
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- `Succession`: The gradual and usually predictable changes in the composition of a community and the abiotic condtions following a disturbance.
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- `Producer`: Organism that makes its own energy-rich food using the Sun’s energy.
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- `Consumer`: Organism that obtains its energy from consuming other organisms.
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- `Eutrophication`: Overfertilzation of staganat bodies of water with nutrients
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## Types of Energy
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- #### Radiant Energy
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- #### Radiant Energy
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- Energy that travels through EMPTY SPACE
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- Energy that travels through EMPTY SPACE
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- #### Thermal Energy
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- #### Thermal Energy
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@ -400,28 +402,14 @@ weakening, or loss of value.**
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- Used by living organisms to perform functions (growth, reproduction, etc.)
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- Used by living organisms to perform functions (growth, reproduction, etc.)
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- MUST be replaced as it is used
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- MUST be replaced as it is used
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## It starts with the sun …
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### Photosynthesis
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- Energy radiates from the sun (UV)
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- Plants use the sun to make energy in the form of glucose or sugar.
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- Earth is hit with the UV or light energy
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- 70% of radiant energy is absorbed by `Hydrosphere` & `Lithosphere`
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- Converted into **thermal** energy
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- Warms the atmosphere, evaporates water & produces winds
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- What happens with the rest?
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- Approx. `30%` is reflected back into space
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- `0.023%` absorbed by living organisms through photosynthesis
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## Why is Photosynthesis important?
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- Animals cannot make their own food (glucose, energy)
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- Animals cannot make their own food (glucose, energy)
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- Must get our food from plants.
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- Must get our food from plants.
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- Plants are the first step in the food chain
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- Plants are the first step in the food chain
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- Oxygen released during photosynthesis is necessary for all living things
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- Oxygen released during photosynthesis is necessary for all living things
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### Cellular Respiration
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## Cellular Respiration
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- Process of converting sugar into carbon dioxide, water and energy
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- Process of converting sugar into carbon dioxide, water and energy
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- Makes stored energy available for use
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- Makes stored energy available for use
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- Takes place in the mitochondria
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- Takes place in the mitochondria
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@ -434,39 +422,37 @@ weakening, or loss of value.**
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- ALL humans are consumers (unless you’re the hulk)
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- ALL humans are consumers (unless you’re the hulk)
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#### Steps in Cellular Respiration
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## Steps in Cellular Respiration
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- Mitochondria takes in nutrients
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- Mitochondria takes in nutrients
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- Glucose and Oxygen
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- Glucose and Oxygen
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- Breaks both nutrients down
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- Breaks both nutrients down
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- Creates energy for the cell
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- Creates energy for the cell
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- #### REVERSE of Photosynthesis
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- #### REVERSE of Photosynthesis
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- Sugar breaks down into **CARBON DIOXIDE** and **WATER**
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- Sugar breaks down into **CARBON DIOXIDE** and **WATER**
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- Release of energy when this happens
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- Release of energy when this happens
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## Feeding Relationship
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## Feeding Relationships
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- Energy flow through an ecosystem in one direction, from the sun or inorganic compounds to autotrophs (producers) and then to various hetrotrophs (consumers).
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- Energy flow through an ecosystem in one direction, from the sun or inorganic compounds to autotrophs (producers) and then to various hetrotrophs (consumers).
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- Food are a series of steps in which organisms transfers energy by eating or eaten (pg. 43).
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- Food are a series of steps in which organisms transfers energy by eating or eaten (pg. 43).
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- Food webs show the complex interactions within an ecosystem (pg. 44).
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- Food webs show the complex interactions within an ecosystem (pg. 44).
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- Each step in a food chain or web is called a `trophic` level. Producers make up the first step, consumers make up the higher levels. E.g. first trophic level are producers, second trophic level are primary consumers, etc.
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- Each step in a food chain or web is called a `trophic` level. Producers make up the first step, consumers make up the higher levels. E.g. first trophic level are producers, second trophic level are primary consumers, etc.
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- Detrivores + scavengers are off to side (with all arrows pointing on it.
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- **First Trophic Level**: `Plants`.
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- `10% rule`, Only 10% of energy is stored in each organism, 90% of energy is lost (heat consumption).
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## ECOLOGICAL PYRAMIDS
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## Ecological Pyramids
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- Food chains and food webs do not give any information about the numbers of organisms involved.
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- Food chains and food webs do not give any information about the numbers of organisms involved.
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- This information can be shown through ecological pyramids.
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- This information can be shown through ecological pyramids.
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- An ecological pyramid is a diagram that shows the amount of energy or matter contained within each trophic level in a food web or food chain.
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- An ecological pyramid is a diagram that shows the amount of energy or matter contained within each trophic level in a food web or food chain.
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<img src="https://www.tutorialspoint.com/environmental_studies/images/upright_pyramid.jpg" width="300">
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<img src="https://www.tutorialspoint.com/environmental_studies/images/upright_pyramid.jpg" width="300">
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|Pyramid|Description|Picture|
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|Pyramid|Description|Picture|
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|:------|:----------|:------|
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|:------|:----------|:------|
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|Pyramid of Biomass|Show the **total** amout of `living tissue` available at each `trophic` level. This shows the amount of tissue available for the next `trophic` level. <br> <br> Biomass is preferred to the use of numbers of organisms because individual organisms can vary in size. It is the `total mass` **(not the size)** that is important. Sometimes it’s inverted. <br> <br> Pyramid of biomass records the total dry organic matter of organisms at each trophic level in a given area of an ecosystem.|<img src="http://earth.rice.edu/mtpe/bio/biosphere/topics/energy/biomass_pyramid.gif" width="800">
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|Pyramid of Biomass|Show the **total** amout of `living tissue` available at each `trophic` level. This shows the amount of tissue available for the next `trophic` level. <br> <br> Biomass is preferred to the use of numbers of organisms because individual organisms can vary in size. It is the `total mass` **(not the size)** that is important. Sometimes it’s inverted. <br> <br> Pyramid of biomass records the total dry organic matter of organisms at each trophic level in a given area of an ecosystem.|<img src="http://earth.rice.edu/mtpe/bio/biosphere/topics/energy/biomass_pyramid.gif" width="800">
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|Numbers Pyramids|Shows the number of organisms at each trophic level per unit area of an ecosystem. <br> <br> Because each trophic level harvests only about `one tenth` of the energy from the level below, it can support only about one `10th` the amount of living tissue. <br> <br> **`Can be inverted`**: 1 large tree supports thousands of organisms living on it <br> <br> Pyramid of numbers displays the number of individuals|<img src="https://d321jvp1es5c6w.cloudfront.net/sites/default/files/imce-user-gen/pyramidnumbers2.png" width="400">|
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|Numbers Pyramids|Shows the number of organisms at each trophic level per unit area of an ecosystem. <br> <br> Because each trophic level harvests only about `one tenth` of the energy from the level below, it can support only about one `10th` the amount of living tissue. <br> <br> **`Can be inverted`**: 1 large tree supports thousands of organisms living on it <br> <br> Pyramid of numbers displays the number of individuals annualy.|<img src="https://d321jvp1es5c6w.cloudfront.net/sites/default/files/imce-user-gen/pyramidnumbers2.png" width="400">|
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|Energy Pyramid|Shows the amount of energy input to each trophic level in a given area of an ecosystem over an extended period.<br> <br> **CANNOT** be inverted, due to energy transfers<br> <br> **Only 10% of the energy available within one trophic level is transferred to organisms at the next trophic level**|<img src="https://upload.wikimedia.org/wikipedia/commons/thumb/3/3a/Ecological_Pyramid.svg/1200px-Ecological_Pyramid.svg.png" width="500">|
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|Energy Pyramid|Shows the amount of energy input to each trophic level in a given area of an ecosystem over an extended period.<br> <br> **CANNOT** be inverted, due to energy transfers<br> <br> **Only 10% of the energy available within one trophic level is transferred to organisms at the next trophic level.**|<img src="https://upload.wikimedia.org/wikipedia/commons/thumb/3/3a/Ecological_Pyramid.svg/1200px-Ecological_Pyramid.svg.png" width="500">|
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**NOTE FOR ENERGY PYRAMIDS**: In nature, ecological
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**NOTE FOR ENERGY PYRAMIDS**: In nature, ecological
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efficiency varies from `5%` to `20%` energy available between successive trophic levels (`95%` to `80%` loss). About 10% efficiency is a general rule. `Rule of 10’s` at each level.
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efficiency varies from `5%` to `20%` energy available between successive trophic levels (`95%` to `80%` loss). About 10% efficiency is a general rule. `Rule of 10’s` at each level.
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@ -484,23 +470,19 @@ efficiency varies from `5%` to `20%` energy available between successive trophic
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### Key Terms:
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### Key Terms:
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- Water moves from one reservoir to another (ocean to
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- Water moves from one reservoir to another (ocean to
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atmosphere, river to lake)
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atmosphere, river to lake)
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- Evaporation, Condensation, Precipitation, Percolation (Infiltration), Run-off
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- Evaporation, Condensation, Precipitation, Percolation (Infiltration, water seeping into ground), Run-off, transpiration (plants losing water to air)
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- Forms: Solid (ice), Liquid (water), Gas (vapour)
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- Forms: Solid (ice), Liquid (water), Gas (vapour)
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### STEPS/PROCESS:
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### STEPS/PROCESS:
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- Exchange of energy leads to:
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- Exchange of energy leads to:
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- Temperature Change, Climate
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- Temperature Change, Climate
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- Condenses 🡪 occurs during cooler temp
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- Condenses 🡪 occurs during cooler temp
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- Evaporation 🡪 happens during warmer temp
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- Evaporation 🡪 happens during warmer temp
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- **Evaporation**:
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- **Evaporation**:
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- purifies the water
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- purifies the water
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- New fresh water for the land
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- New fresh water for the land
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- **Flow of liquid water and ice**
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- **Flow of liquid water and ice**
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- Transports minerals across the globe
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- Transports minerals across the globe
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- **Reshaping the geological features of Earth**
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- **Reshaping the geological features of Earth**
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- Erosion and sedimentation
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- Erosion and sedimentation
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@ -515,9 +497,10 @@ atmosphere, river to lake)
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- Fourth most abundant element in universe
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- Fourth most abundant element in universe
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- Building block of all living things
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- Building block of all living things
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- Main Pathway – in and out of living matter
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- Main Pathway – in and out of living matter
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-
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### STEPS/PROCESSES
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### STEPS/PROCESSES
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- All living organisms contain carbon
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- All living organisms contain carbon.
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- CO<sub>2</sub> is a waste product of cellular respiration
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- CO<sub>2</sub> is a waste product of cellular respiration
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- Plants use carbon dioxide and water to form simple sugars (photosynthesis)
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- Plants use carbon dioxide and water to form simple sugars (photosynthesis)
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- Light Energy --> Chemical Energy
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- Light Energy --> Chemical Energy
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@ -547,8 +530,6 @@ atmosphere, river to lake)
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- Atmopspheric nitrogen = N<sub>2</sub>
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- Atmopspheric nitrogen = N<sub>2</sub>
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- Most living organisms are `unable` to use this form of nitrogen
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- Most living organisms are `unable` to use this form of nitrogen
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- Therefore, must be **converted** to a usable form!
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- Therefore, must be **converted** to a usable form!
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### STEPS/PROCESSES
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### STEPS/PROCESSES
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<img src="https://image.slidesharecdn.com/lab-11methodsforestimatingdenitrificationprocess-130414125752-phpapp01/95/lab11-methods-for-estimating-denitrification-process-4-638.jpg?cb=1365944316" witdh="100">
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<img src="https://image.slidesharecdn.com/lab-11methodsforestimatingdenitrificationprocess-130414125752-phpapp01/95/lab11-methods-for-estimating-denitrification-process-4-638.jpg?cb=1365944316" witdh="100">
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@ -597,7 +578,7 @@ atmosphere, river to lake)
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1. `Density dependent factors`
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1. `Density dependent factors`
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2. `Density independent factors`
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2. `Density independent factors`
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## Density Independent Factors
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### Density Independent Factors
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- DIF’s can affect a population no matter what its density is. The effect of the factor (such as weather) on the size of the population **does not** depend on the **original size** of the population.
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- DIF’s can affect a population no matter what its density is. The effect of the factor (such as weather) on the size of the population **does not** depend on the **original size** of the population.
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- Examples:
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- Examples:
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- unusual weather
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- unusual weather
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@ -605,7 +586,7 @@ atmosphere, river to lake)
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- seasonal cycles
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- seasonal cycles
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- certain human activities—such as damming rivers and clear-cutting forests
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- certain human activities—such as damming rivers and clear-cutting forests
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## Density Dependent Factors
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### Density Dependent Factors
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- DDF’s affect a population **ONLY** when it reaches a certain size. The effect of the factor (such as disease) on the size of the population depends on the **original size** of the population
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- DDF’s affect a population **ONLY** when it reaches a certain size. The effect of the factor (such as disease) on the size of the population depends on the **original size** of the population
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- Examples:
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- Examples:
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- Competition
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- Competition
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@ -617,49 +598,48 @@ atmosphere, river to lake)
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1. **Symbiosis**
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1. **Symbiosis**
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- Two different organisms associate with each other in a close way.
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- Two different organisms associate with each other in a close way.
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- Is the interaction between members of `two different species` that live together in a close association.
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- Is the interaction between members of `two different species` that live together in a close association.
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- Types
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- **Mutualism (+/+)**
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- **Mutualism (+/+)**
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- Both species benefit from the relationship.
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- Both species benefit from the relationship.
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- (eg. human intestine and good bacteria, bees and flowers, clownfish and sea anemone, cattle egret and cow).
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- (eg. human intestine and good bacteria, bees and flowers, clownfish and sea anemone, cattle egret and cow).
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- **Commensalism (+/0)**
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- **Commensalism (+/0)**
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- one species benefits, the other is **unaffected**.
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- one species benefits, the other is **unaffected**.
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- (eg. beaver cutting down trees, whales and barancles).
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- (eg. beaver cutting down trees, whales and barancles).
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- **Parasitism (-/+)**
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- **Parasitism (-/+)**
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- one species is harmed, the other **benefits**.
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||||||
- one species is harmed, the other **benefits**.
|
- (eg. lice and humans, mosquito and humans).
|
||||||
- (eg. lice and humans, mosquito and humans).
|
- **Competition (-/-)**
|
||||||
- **Competition (-/-)**
|
- neither species benefits. Can be harmed. (-/-).
|
||||||
- neither species benefits. Can be harmed. (-/-).
|
- **Neutralism (0/0)**
|
||||||
- **Neutralism (0/0)**
|
- both species are unaffected (unlikely).
|
||||||
- both species are unaffected (unlikely).
|
- True neutralism is extremely unlikely or even impossible to prove. One cannot assert positively that there is absolutely no competition between or benefit to either species.
|
||||||
- True neutralism is extremely unlikely or even impossible to prove. One cannot assert positively that there is absolutely no competition between or benefit to either species.
|
- Example: fish and dandelion
|
||||||
- Example: fish and dandelion
|
|
||||||
|
<table class="table" style="max-width:80%">
|
||||||
<table class="table" style="max-width:80%">
|
<tr>
|
||||||
<tr>
|
<th><b>+</b></th>
|
||||||
<th><b>+</b></th>
|
<td><b>Parasitism and Predation</b></td>
|
||||||
<td><b>Parasitism and Predation</b></td>
|
<td><b>Commensalism</b></td>
|
||||||
<td><b>Commensalism</b></td>
|
<td><b>Mutalism</b></td>
|
||||||
<td><b>Mutalism</b></td>
|
</tr>
|
||||||
</tr>
|
<tr>
|
||||||
<tr>
|
<th><b>0</b></th>
|
||||||
<th><b>0</b></th>
|
<td></td>
|
||||||
<td></td>
|
<td><b>Neutralism</b></td>
|
||||||
<td><b>Neutralism</b></td>
|
<td><b>Commensalism</b></td>
|
||||||
<td><b>Commensalism</b></td>
|
</tr>
|
||||||
</tr>
|
<tr>
|
||||||
<tr>
|
<th><b>-</b></th>
|
||||||
<th><b>-</b></th>
|
<td><b>Competition</b></td>
|
||||||
<td><b>Competition</b></td>
|
<td></td>
|
||||||
<td></td>
|
<td><b>Parasitism and Predation</b></td>
|
||||||
<td><b>Parasitism and Predation</b></td>
|
</tr>
|
||||||
</tr>
|
<tr>
|
||||||
<tr>
|
<th></th>
|
||||||
<th></th>
|
<th><b>-</b></th>
|
||||||
<th><b>-</b></th>
|
<th><b>0</b></th>
|
||||||
<th><b>0</b></th>
|
<th><b>+</b></th>
|
||||||
<th><b>+</b></th>
|
</tr>
|
||||||
</tr>
|
</table>
|
||||||
</table>
|
|
||||||
|
|
||||||
2. **Competition**
|
2. **Competition**
|
||||||
- Individuals compete for limited resources
|
- Individuals compete for limited resources
|
||||||
@ -682,7 +662,42 @@ atmosphere, river to lake)
|
|||||||
## Candian Biomes
|
## Candian Biomes
|
||||||
<img src="https://slideplayer.com/slide/12708159/76/images/41/Canada%E2%80%99s+Biomes+Mountain+Forest+Tundra+Boreal+Forest+Grassland.jpg" width="800">
|
<img src="https://slideplayer.com/slide/12708159/76/images/41/Canada%E2%80%99s+Biomes+Mountain+Forest+Tundra+Boreal+Forest+Grassland.jpg" width="800">
|
||||||
|
|
||||||
## Ecosystem Services
|
### Tundra
|
||||||
|
* Most **NORTHERN** biome of Canada.
|
||||||
|
* Low temperatures + lots of **PERMAFROST**
|
||||||
|
* Low decomposition rate.
|
||||||
|
* Plants grow slower due to cold
|
||||||
|
* `Species`: Polar bears, Caribou, Arctic foxes.
|
||||||
|
|
||||||
|
### Boreal Forest
|
||||||
|
* **Largest** biome in Canada.
|
||||||
|
* Warmer weather+plenty rainfall.
|
||||||
|
* Acidic Soil - Limits variety of plants + slows down decomposition.
|
||||||
|
* `Species` Grey wolves, conifers, moss, black bears.
|
||||||
|
|
||||||
|
### Grassland
|
||||||
|
* Moderate rainfall (supports grass not trees).
|
||||||
|
* Dry $`\rightarrow`$ Fire $`\rightarrow`$ Fire prevents larges trees from growing.
|
||||||
|
* Very **Fertile** black soil (high decomposition rate)
|
||||||
|
* Large portions of this biome are replaced by farms in Canada.
|
||||||
|
* `Species`: Bison, Snakes, fescue grasses, voles.
|
||||||
|
|
||||||
|
### Temperate Deciduous Forest
|
||||||
|
* Layers of canopy trees, understorey trees, shrubs, ground vegetation.
|
||||||
|
* Variety oof plants + species.
|
||||||
|
* Fast decomposition rate (warm temperatures).
|
||||||
|
* Large portions of this biome used by humans for cities.
|
||||||
|
* `Species`: Shrews, decidious trees, deer, black bears.
|
||||||
|
|
||||||
|
### Mountain Forest
|
||||||
|
* Temperatures vary with elevation
|
||||||
|
* Windy + cool summers
|
||||||
|
* Heavy precipitation on leeward side of mountains
|
||||||
|
* `Species` Elk, cougar, large coniferous trees, ferns.
|
||||||
|
|
||||||
|
## Introducing Ecosystems
|
||||||
|
- Most ecosystems are **SUSTAINABLE**.
|
||||||
|
### Ecosystem Services
|
||||||
- **Cultural Services**
|
- **Cultural Services**
|
||||||
- Benefits relating to our enjoyment of the environment.
|
- Benefits relating to our enjoyment of the environment.
|
||||||
- Ex. Recreational, aesthetic and spiritual experiences when we interact with natural surroundings.
|
- Ex. Recreational, aesthetic and spiritual experiences when we interact with natural surroundings.
|
||||||
@ -703,7 +718,7 @@ atmosphere, river to lake)
|
|||||||
- Protect land from storms along coasts where wave damage erodes the shoreline.
|
- Protect land from storms along coasts where wave damage erodes the shoreline.
|
||||||
- Mangroves
|
- Mangroves
|
||||||
|
|
||||||
### Monetary Value of Ecosystem Services
|
#### Monetary Value of Ecosystem Services
|
||||||
|
|
||||||
- Very difficult to put a dollar value to it.
|
- Very difficult to put a dollar value to it.
|
||||||
- Dollar value of cleaning the air/water, moderating climate and providing paper fibre, medicines and other products is HIGH.
|
- Dollar value of cleaning the air/water, moderating climate and providing paper fibre, medicines and other products is HIGH.
|
||||||
@ -711,7 +726,7 @@ atmosphere, river to lake)
|
|||||||
- Provides valuable services that are free and renewable.
|
- Provides valuable services that are free and renewable.
|
||||||
|
|
||||||
|
|
||||||
## Successions
|
### Successions
|
||||||
- Natural ecosystems are in a state of equilibrium (their biotic and abiotic features remain relatively constant over time).
|
- Natural ecosystems are in a state of equilibrium (their biotic and abiotic features remain relatively constant over time).
|
||||||
- Equilibrium is established when abiotic conditions are stable.
|
- Equilibrium is established when abiotic conditions are stable.
|
||||||
- Photosynthesis and cellular respiration are balanced.
|
- Photosynthesis and cellular respiration are balanced.
|
||||||
@ -727,7 +742,7 @@ atmosphere, river to lake)
|
|||||||
- Results in gradual changes as plants, animals, fungi and micro organisms become established in an area.
|
- Results in gradual changes as plants, animals, fungi and micro organisms become established in an area.
|
||||||
- In both terrestrial and aquatic ecosystems.
|
- In both terrestrial and aquatic ecosystems.
|
||||||
|
|
||||||
### Benefits of Succession
|
#### Benefits of Succession
|
||||||
- Provides a mechanism by which ecosystems maintain their long term sustainability.
|
- Provides a mechanism by which ecosystems maintain their long term sustainability.
|
||||||
- Allows ecosystems to recover from natural or human caused disturbances.
|
- Allows ecosystems to recover from natural or human caused disturbances.
|
||||||
- Offers hope (New Orleans, New Jersey, Florida, Puerto Rico).
|
- Offers hope (New Orleans, New Jersey, Florida, Puerto Rico).
|
||||||
@ -737,7 +752,16 @@ atmosphere, river to lake)
|
|||||||
- Disturbances can be repaired through human actions that support the natural processes of succession.
|
- Disturbances can be repaired through human actions that support the natural processes of succession.
|
||||||
|
|
||||||
|
|
||||||
## Species at Risk
|
### Human Impacts To Species
|
||||||
|
- Increase rate of **EXTINCT** species.
|
||||||
|
- HIPPO
|
||||||
|
- Habitat destruction + fragmentation (divide lands into pieces)
|
||||||
|
- Invasive species.
|
||||||
|
- Pollution + pesticides.
|
||||||
|
- Over Population
|
||||||
|
- Overexploitation (overfishing, overhunting etc).
|
||||||
|
|
||||||
|
#### Status of Endangered Life in Canda
|
||||||
- Do not have to be driven to extinction for there to be ecological consequences.
|
- Do not have to be driven to extinction for there to be ecological consequences.
|
||||||
- Population falls below critical level = ecological niche can no longer be filled.
|
- Population falls below critical level = ecological niche can no longer be filled.
|
||||||
- Consequences for abiotic and biotic features.
|
- Consequences for abiotic and biotic features.
|
||||||
@ -745,3 +769,27 @@ atmosphere, river to lake)
|
|||||||
- **Endangered**: facing imminent extirpation or extinction.
|
- **Endangered**: facing imminent extirpation or extinction.
|
||||||
- **Threatened**: likely to become endangered if factors reducing its survival are not changed.
|
- **Threatened**: likely to become endangered if factors reducing its survival are not changed.
|
||||||
- **Special Concern**: may become threatened or endangered because of a combination of factors.
|
- **Special Concern**: may become threatened or endangered because of a combination of factors.
|
||||||
|
|
||||||
|
### Eutrophication
|
||||||
|
#### The Problem
|
||||||
|
- Lack or no dissolved oxygen, produces toxic algae, ugly.
|
||||||
|
- Colour, smell, and water treatment problems.
|
||||||
|
- Animal waste = nutrients.
|
||||||
|
- Examples
|
||||||
|
- Parks in china.
|
||||||
|
- Hanoi, vietnam.
|
||||||
|
|
||||||
|
#### Solutions
|
||||||
|
- Water cycling, through the use of watermills or waterfalls.
|
||||||
|
- People removing decomposing plants, collecting waste/garabage.
|
||||||
|
- Aerator.
|
||||||
|
|
||||||
|
### Resource Management
|
||||||
|
#### Forestry Practices
|
||||||
|
- Canadian economy rely heavily on forests.
|
||||||
|
- Difficult to find a balance between commerical demands and ecological integrity.
|
||||||
|
- Forest certifications are given to people that use safe practices
|
||||||
|
### Wildlife Management
|
||||||
|
- **`Stewardship`** (sustainable harvesting) must always be remembered!
|
||||||
|
- Inuit people had small populations and knew how their enviornments worked, European settlers changed all of that!
|
||||||
|
|
||||||
|
Loading…
Reference in New Issue
Block a user