What are the biotic and abiotic factors in a tropical savanna?

What they mean

Abiotic factors are chemical and physical factors of the environment like climate and soil type - 'non biology'

• Solar energy input is affected by season, cloud cover and changes in the Earth's orbit.
• Light is important for plants for photosynthesis, for seed germination and for the behaviour of animals like reproduction time
• Climate are rainfall, wind and high temperature
• Topography are the surface of the land like height of mountains, the positions of the slopes that affect drainage and the behaviour of organism
• Oxygen availability
• Edaphic is connected with the soil like the pH of the soil, mineral salt of soil, the soil texture for example sandy soils are well drained and dry out quickly in hot weather but are never water logged in wet weather. Clay soils don't drain and restrain water in hot weather but are waterlogged in wet weather. The edaphic factors affect the plant distribution
• Pollution in the air, water land
• Catastrophes are like earth quakes that disrupt the conditions

Biotic factors are things done by organisms like predation and competition - 'living'

• Competition like for food, habitat and mates can be either interspecific (between species) or intraspefic (within species)
• Mutualism is the relation between partners
• Grazing, predation, parasitism is the relationship between 2 species where one benefit from the other

Biotic factors are density dependent which describes the factors that affect the size of the population relative to the area of the land. The bigger the population the greater the competition for food, habitat due to less land.

Example- poor weather can reduce the number of animals that can have a nock on affect for predators. If the pH on the soil fails then it can affect the bacteria living there and the rate of decomposition will change

First answer by ID1190245659. Last edit by 02wnilud. Contributor trust: 1 [recommend contributor]. Question popularity: 61 [recommend question]