Energy And Ecosystems Flashcards

1
Q

What is an ecosystem

A

They are dynamic, the abundance and distribution of organisms are controlled by biotic and abiotic factors

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2
Q

What are abiotic factors

A

Non living such as temperature, rainfall ,sunlight

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3
Q

What are biotic factors

A

Living factors such as predators, competition

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4
Q

Population

A

All the organisms of on species in a habitat

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5
Q

Community

A

All the organisms of all the species in a habitat

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6
Q

Habitat

A

Where an organism loves

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7
Q

Niche

A

The specific role an organism plays in an ecosystem

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8
Q

Throphic level

A

The different levels in a food chain

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9
Q

Intraspecific competition

A

Competition within the same species

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10
Q

Interspecific competition

A

Competition between different species for the same resources

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11
Q

Gross primary production

A

Total amount of energy made by producers

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12
Q

How do you work out net production

A

N=I-(R+F)

N=biomass, I= energy ingested,F= waste

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13
Q

Describe the nitrogen cycle

A

Ammonium ions, nitrate 1, nitrate 2, nitrogen gas in atmosphere, plants + animals, decomposes, amonification–ammonium ions

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14
Q

Saprobiontic nutrition

A

Digestion or break down of organic matter by extracellular enzymes

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15
Q

Saprobions

A

A type of decomposed that digests their food by saprobiontic nutrition

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16
Q

Saprobiontic nutrition

A

Digestion or the break down or organic matter by extracellular enzymes

17
Q

Natural fertilisers

A

Donation nitrogen and phosphorus in organic matter e.g. Manure or compost

18
Q

Artificial fertilisers

A

Inorganic chemical compounds that contain n+p

19
Q

Leaching

A

When soluble compounds are washed off by the rain

20
Q

Eutrophication

A
  1. N+P leach into pond water 2. Algae blooms 3. Blocks out light 4. Plants can’t photosynthesis 5. Saprobionts break down dead plant 6. Respire aerobically 7. Fish die
21
Q

Briosphere

A

Simple plants that have no stem and grow close to the ground

22
Q

Seral stage

A

Plant life changing so does the fauna

23
Q

Climax community

A

When ecosystems have reached their carrying capacity of an environment

24
Q

Autograph

A

An organism that produces its own energy

25
What are the common changes during succession
Increased biomass, increase size of organisms, increased biodiversity, more complex food webs, increase gross productivity
26
Succession
A directional change in plant and animal communities with time
27
Secondary succession
Occurs on site where some changes has happened to an existing community, this is faster than primary succession
28
What are the 6 stages of succession
1. Migration 2. Colonisation 3. Establishment 4. Competition 5. Stabilisation 6. Climax
29
What is the rhyme to remember the stages of succession
Mud, can, easily, cover, solid, concrete
30
Biodiversity
The variability among living organisms from all sources and the ecological systems of which they are a part of
31
Biodiversity hotspot
Aide conservation is deciding what sites need the most conserving
32
Conservation
Managing succession and balancing the ethical and commercial interests, done by changing practises or tweaking the land