Common abiotic factors include temperature, light, moisture and pH. In a standard ecosystem, abiotic factors represent any non-living elements of that system. Therefore, determining abiotic factors is specific to the ecosystem in question.
Every ecosystem or habitat consists of both living (biotic) and non-living (abiotic) components which affect its living conditions. The direct impact of these factors on the environment define it and, therefore, how the living creatures within it are able to survive.
Because each ecosystem is different, there are different abiotic factors present in each situation. Common factors such as air temperature and temperature fluctuations, humidity or atmospheric moisture, pH balance and light exist in most natural habitats.
However, there are additional abiotic factors unique to certain environments and habitats. Among the most important for scientists to consider are abiotic factors affected by biotic factors, and specifically mankind. These include considerations such as air pollution and water and soil quality. While nature impacts these factors, additional input from mankind and its technology alters them in unpredictable ways that must be measured.
There are also nature-specific abiotic factors that affect some, but not all habitats. The availability of water, for example, is an abiotic factor in a desert environment, but not in an ocean or lake.