11957167
Description
Flashcards by J yadonknow, updated more than 1 year ago
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Created by J yadonknow
almost 7 years ago
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| Question | Answer |
| What do Himalayan Balsam do? | Crowd out native species, including tansy |
| What do rhododendrons do? | Block light, spread diseases fatal to trees |
| What effect do minks have? | 94% decrease in water vole sites |
| What effects do signal crayfish have? | Drives white-clawed crayfish towards extinction Transmission of crayfish plague Burrow into riverbanks, increase erosion and flood risk |
| What are the characteristics of an invasive species? (8) | Fast growth Rapid reproduction High dispersal ability phenotype plasticity tolerance to a wide range of environmental conditions able to live off of a wide range of food sources Association with humans Prior successful invasion history |
| How does urban eutrophication occur? | When rain occurs in large cities it filters down pollutants such as CO2 onto the ground below. Chemicals wash directly into water bodies, damaging water quality and marine ecosystems. |
| What is one of the main effects of light pollution? | Changes predator-prey relationships Occurs around lakes and prevents zooplankton from eating surface algae, leading to toxic algal blooms |
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