Environment & Ecology Notes 3 - PRELIMS
Biome and ecosystem: • A large naturally occurring community of flora and fauna occupying a major habitat. E.g., forest or tundra. Ecosystem refers to the interaction of biotic and abiotic components. • An ecosystem is smaller in comparison to a biome as a biome can be widely distributed all through the earth. • Unlike an ecosystem, a biome is strongly influenced by its physical factors such as climatic conditions such as snow, temperature, rainfall etc. A biome has multiple ecosystems. • An ecosystem is not influenced by the latitude whereas a biome is influenced. • In an ecosystem, all animals interact in trophic interactions of food webs and chains whereas, in a biome, animals do not necessarily interact. • Desert, grasslands, tundra, and tropical rainforests are some examples of biomes. An ecosystem includes ponds, coral reefs, etc. Why humus content in tropical rainforest soils is poor? • Humus content of soil is a function of how fast organic matter is produced and how fast it decays. o Humus i…
