Communities & Ecosystems Stephen Taylor

Slides:

Advertisements

Similar presentations

Topic 5: Ecology & Evolution Miss Friedman

Advertisements

Chapter 3: The Biosphere

Nutrient Circulation Waste is in the form of dead organisms: animals/ plants/ leaves faeces urine All can contain nutrients and/or energy If the nutrients.

5.1 Communities and Ecosystems. Assessment Statements Define species, habitat, population, community, ecosystem, and ecology Distinguish between autotroph.

IB Biology Chris McDermut.

Energy Transfer & Nutrient Cycling

5.1-communities and ecosystems

Energy in Ecosystems Nitrogen in ecosystems. Energy in Ecosystems Energy in ecosystems Re-cap How much energy is lost between each organism? What is the.

What is Ecology? Study of the relationship between organisms AND between organisms and their environment.

Topic 5 – Topic 5.1 Communities and ecosystems Ecology – the study of relationships in ecosystems – both between organisms and between organisms and their.

4.2 Energy Flow Ecosystems require a continuous supply of energy to fuel life processes and to replace energy lost as heat.

Energy Flow in Ecosystems and Biogeochemical Cycles.

5.2 Ecosystems and Communities

1 Habitat & Niche Habitat is the place a plant or animal lives Habitat is the place a plant or animal lives Niche is an organism’s total way of life Niche.

 Explain the role of producers, consumers, and decomposers in the ecosystem.  Describe photosynthesis and respiration in terms of inputs,

Communities and Ecosystems Topic 5.1. Assessment Statements Define species, habitat, population, community, ecosystem and ecology Distinguish.

Topic 5: Ecology and evolution

Ecosystems & Energy Flow ( ) IB Diploma Biology Photo: Wasp in Java, by Stephen Taylor ©Wasp in Java.

Energy in Ecosystems Nitrogen in ecosystems. Energy in Ecosystems Energy in ecosystems Re-cap How much energy is lost between each organism? What is the.

Circulation of Nutrients

Topic 5.1: Communities and Ecosystems. 5.1 Assessment Statements Define species, habitat, population, community, ecosystem and ecology Distinguish.

Topic 5: Ecology and Evolution 5.1 Communities and Ecosystems.

Communities and ecosystems Unit 2 Mr. Tamashiro Define species, habitats, populations, community, ecosystems and ecology. Species: a group of organisms.

4.2 Essential idea: Ecosystems require a continuous supply of energy to fuel life processes and to replace energy lost as heat.

Communities & Ecosystems IB Diploma Biology Stephen Taylor Photo: Wasp in Java, by Stephen Taylor ©Wasp in Java.

5.1: Communities Topic 5: Ecology & Evolution Miss Friedman.

Learning objectives Success criteria Decomposition and the nitrogen cycle Describe the role of decomposers in the decomposition of organic material Describe.

34-1 An ecosystem contains: Biotic (living) components and Abiotic (nonliving) components. The biotic components of ecosystems are the populations of organisms.

decomposition by bacteria & fungi

KEY CONCEPT INTERDENPENDENCE – all organisms interact with: other organisms in their surroundings the nonliving portion of their environment Their survival.

Principles of Ecology. Learning Targets Describe the different niches organisms occupy in food chains and diagram a model of a food web that includes.

2. Name two of the four biogeochemical cycles.

Biology Ecology Unit. Energy in Ecosystems  Consumers: get their energy by eating other living or once- living resources such as plants or animals 

F Ecosystems & Energy Flow By Ms Cullen.

What is Ecology? Study of the relationship between organisms AND between organisms and their environment.

AP Biology Ecosystems AP Biology biosphere ecosystem community population Studying organisms in their environment organism.

Nitrogen Cycle Describe the role of decomposers in the decomposition of organic material. Describe how microorganisms recycle nitrogen within ecosystems.

Energy Flow and Nutrient Cycles

Chapter 13: Principles of Ecology

Nutrient Recycling – The Nitrogen Cycle

KEY CONCEPT Life in an ecosystem requires a source of energy.

Topic 5: Ecology & Evolution Miss Friedman

STARTER: Write down EVERYTHING you know about nitrogen?

Nitrogen, Carbon, Phosphorus and Water Cycles

The flow of matter and energy through an ecosystem.

Communities & Ecosystems

April 26, 2017 Journal: How are photosynthesis and cellular respiration related to each other?

How Plants Get Their Energy

Food webs show all of the feeding relationships within a habitat. Read this research article and generate a food web. The state of the oceans,

Ecosystems & Energy Flow ( )

Communities & Ecosystems Stephen Taylor

Ecosystems & Energy Flow ( )

Topic 5: Ecology and evolution

We have studied how matter cycles through the 4 spheres, but how does energy cycle? Ecosystems.

ECOLOGY Part 2 - Chapter 3.4 Cycles.

Food Webs and Ecosystem Ecology

What is Ecology? The study of how organisms interact with each other and their environment. Environmental conditions include: Biotic factors (living) Abiotic.

Food webs show all of the feeding relationships within a habitat. Read this research article and generate a food web. The state of the oceans,

Topic 5.1 Communities and Ecosystems.

Ecosystems & Energy Flow ( )

Ecology Biosphere.

Ecosystems & Energy Flow ( ) IB Diploma Biology By SreeramPavan Nemani.

Ecosystems & Energy Flow ( )

ECOLOGY Chapter 3.4 Cycles.

Presentation transcript:

Communities & Ecosystems Stephen Taylor IB Diploma Biology Stephen Taylor Photo: Wasp in Java, by Stephen Taylor ©

Assessment Statements Obj. 5.1.1 Define species, habitat, population, community, ecosystem & ecology. 1 5.1.2 Distinguish between autotroph and heterotroph. 2 5.1.3 Distinguish between consumers, detritivores and saprotrophs. 5.1.4 Describe what is meant by a food chain, giving three examples, each with at least four linkages. 5.1.5 Describe what is meant by a food web. 5.1.6 Define trophic level. 5.1.7 Deduce the trophic level of an organism in a food chain & food web. 3 5.1.8 Construct a food web containing up to 10 organisms, using appropriate information. 5.1.9 State that sunlight is the initial energy source for almost all communities. 5.1.10 Explain the energy flow in a food chain. 5.1.11 State that energy transfers are never 100% efficient. 5.1.12 Explain reasons for the shape of a pyramid of energy. 5.1.13 Explain that energy enters and leaves ecosystems, but nutrients must be recycled. 5.1.14 State that saprotrophic bacteria and fungi (decomposers) recycle nutrients. Command terms: http://i-biology.net/ibdpbio/command-terms/ Assessment statements from: Online IB Biology Subject Guide

Food webs show all of the feeding relationships within a habitat. Read this research article and generate a food web. The state of the oceans, part 2: Delving deeper into the sea's bounty. John Tibbetts This is a good thing.

Food webs show all of the feeding relationships within a habitat. Read this research article and generate a food web. The state of the oceans, part 2: Delving deeper into the sea's bounty. John Tibbetts This is a good thing.

Food webs show all of the feeding relationships within a habitat.

Food webs show all of the feeding relationships within a habitat.

Outline the roles of bacteria in the nitrogen cycle. (Total 6 marks)

Rhizobium / nitrogen-fixing bacteria lives in root nodules / symbiotic relationship with legumes; fixes nitrogen into ammonia; using energy from ATP; Azotobacter / nitrogen-fixing bacteria lives free in soil; fixes nitrogen into ammonia; Nitrosomonas / nitrifying bacteria converts ammonia to nitrite; Nitrobacter / nitrifying bacteria converts nitrite to nitrate; Nitrosomonas and Nitrobacter live in well aerated soil / require good supply of oxygen; Pseudomonas denitrificans / denitrifying bacteria converts nitrate to nitrogen; nitrate is used as terminal electron acceptor instead of oxygen; carries this out in low oxygen / badly aerated soil; 6 max Responses must include at least three types of bacteria to achieve full marks. Award [0] for responses with just the name of bacterium.

Explain how energy and nutrients enter, move through, and exit a food chain in an ecosystem. (Total 8 marks)

energy enters from (sun)light; chloroplasts / plants / producers / autotrophs capture (sun)light; energy flows through the trophic levels / stages in food chain; energy transfer is (approximately) 10% from one level to the next; heat energy is lost through (cell) respiration; energy loss due to material not consumed / assimilated / egested / excreted; labelled diagram of energy pyramid; energy passes to decomposers / detritivores / saprotrophs in dead organic matter; nutrient cycles within ecosystem / nutrients are recycled; example of nutrient cycle with three or more links; nutrients absorbed by producers / plants / roots; nutrients move through (food chain) by digestion of other organisms; nutrients recycled from decomposition of dead organisms; nutrients from weathering of rocks enter ecosystem; nutrients lost by leaching / sedimentation (eg shells sinking to sea bed); 8 max (Plus up to [2] for quality)

i-Biology.net Please consider a donation to charity via Biology4Good. Click here for more information about Biology4Good charity donations. @IBiologyStephen This is a Creative Commons presentation. It may be linked and embedded but not sold or re-hosted.