Option G continued. Outline the factors that affect the distribution of plant species, including temperature, water, light, soil pH, salinity and mineral nutrients. Question List four factors that affect the distribution of plant species (4) . pH of soil; water /humidity; light;
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Outline the factors that affect the distribution of plant species, including temperature, water, light, soil pH, salinity and mineral nutrients.
List four factors that affect the distribution of plant species (4)
Explain the factors that affect the distribution of animal species, including temperature, water, breeding sites, food supply and territory.
Explain the factors that affect the distribution of an animal species.
Explain what is meant by the niche concept, including an organism’s spatial habitat, its feeding activities and its interactions with other species.
One species totally outcompetes another species.
A garden overrun by weeds.
a niche is the place where an organism lives and the roles that it plays in its habitat;
Evaluate the use of indicator species in monitoring environmental changes. (6)
indicator species sensitive to/need specific environmental conditions to survive;
Limit this to edge effects, size and habitat corridors.
Large nature reserves usually promote conservation of biodiversity more effectively than small ones.
The ecology of the edges of ecosystems is different from the central areas due to edge effects. An example of an edge effect is the egg-laying habits of the cowbird of the western United States.
It feeds in open areas, but it lays its eggs in the nests of other birds near the edges of forests.
Fragmentation of forests has led to a considerable increase in cowbird populations because of the increase in forest edge. Wildlife corridors allow organisms to move between different parts of a fragmented habitat, for example, tunnels under busy roads.