8167195
Description
Flashcards by Henry Biddulph, updated more than 1 year ago
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Created by Ben Goetze
almost 11 years ago
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Copied by Henry Biddulph
about 8 years ago
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| Question | Answer |
| Community | A group of organisms of different species (populations) that interact in one area |
| Species | Organisms that can interbreed under natural conditions to produce fertile offspring |
| Population | A group of organisms of the same species living in one place/area |
| Ecosystem | Interactions between biotic and abiotic components of the environment |
| Detrivore | Eat the matter which is digested internally. Nutrients are then excreted into the soil. Eg. Earthworms, Dung Beetles |
| Food Web (what things must you consider when making them?) | -Arrows -Producers at bottom -Try to arrange in Trophic Levels |
| Photosynthesis | Carbon Dioxide+water-->Glucose+oxygen |
| Respiration | glucose+oxygen-->carbon+water+energy dioxide |
| Biotic factors affecting survival | Living actors e.g. predators, disease, competition, food availability |
| Abiotic factors affecting survival | Non-living factors e.g. rocks, soil, pH, temp, weather, climate, water availability |
| food chain (percentage passed through) | 1% into producer, 10% afterward. 99% lost through reflection and radiation (producer) 90% lost as heat, waste & movement |
| Biomass | The mass of dry biological material in a population or organism. Remove the water and what is left is biomass. |
| Carbon cycle | -The Layer in the atmosphere provides insulation (greenhouse effect) -Human activities increased Greenhouse effect (burning of fossil fuels, deforestation) |
| Carbon Cycle (Diagram) |
Image:
Carbon-cycle (image/png)
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| Mortality | Death Rate |
| Immigration | Moving In |
| Emigration | Moving out |
| Population change=? | Emigration, high birth rate, low/high mortality, more/less food, better/worse healthcare. |
| Environmental Resistance Factor | Decrease growth of a population by increasing mortality and emigration. E.g. Predators, food av, competition, disease, water av., shelter, light/soil (plants) |
| Quadrat Method | Best for non/slow moving organisms |
| Lincoln Index | Used to sample moving populations of organisms (tag, release, count) |
| Trophic Levels | Producer - 1st 1st order consumer - 2nd trophic level (herbivore) 2nd order consumer - 3rd trophic level (carnivore) 3rd order consumer - 4th trophic level (predator) |
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