It enables the population to adapt to its environment and respond to natural selection. Biodiversity is the variety and variability of life on Earth.Biodiversity is typically a measure of variation at the genetic, species, and ecosystem level. Home; Explore; Successfully reported this slideshow. There are approximately 391,000 different species of plant on the planet, although some are at risk of becoming extinct and many have not yet been discovered. New Zealand is known for its unique biodiversity, caused by its remarkable geography and geologic history. Species – The differences between species. The major habitat types from which all other smaller ecosystems derive are called terrestrial, marine and aquatic ecosystems. Ecosystem diversity: It include all the species and all abiotic factors characteristic of a region. Biodiversity Definition 'Biological diversity' means the variability among living organisms from all sources including, inter alia, terrestrial, marine and other aquatic ecosystems and the ecological complexes of which they are a part; this includes diversity within species, between species and of ecosystems. When considering only the number of different species within an ecosystem we then talk of species richness. Extinction is when a group of organisms fail to adapt to the environment and therefore cannot survive. A common measure of this variety, called species richness, is the count of species in an area. (2019, May 31). Biodiversity is a term which describes every living organism within a single ecosystem or habitat, including numbers and diversity of species and all environmental aspects such as temperature, oxygen and carbon dioxide levels and climate. Species can have instrumental or intrinsic (inherent) value. The lesson is designed to showcase the value of indigenous cultural perspectives and knowledge of the world around us. Total number of different species. This means that an ecosystem must contain at least 1,500 species of plants found nowhere else on earth (endemic” species) but have also lost at least 70% of its primary native vegetation. Without biodiversity, ecosystems would produce less. SlideShare Explore Search You. Plant life is not enough to support large populations of herbivores and in this unnatural ecosystem are in a group of their own. Should something drastic happen to affect the health of this bacteria and it becomes extinct, there is no other organism to take advantage of this inhospitable environment. Alternatively, fishers remove too many fish of a wide range of species, not immediately upsetting the balance of fish species but causing a drop in population and lower reproduction rates that allows certain types of plankton or algae to take over. Today, the fine dust from car exhausts largely replaces coal. From the ground up, or from the ocean floor up, biodiversity increases soil formation, nutrient storage, energy storage, recycling, and the breaking down of toxins and pollutants. Instead of having a group of producers (plants) feeding primary consumers (herbivores) who feed secondary, tertiary and quaternary consumers (omnivores and carnivores), it is often human food waste that becomes the urban producer. damaging to the well-being of humans and other organisms and steps are being taken to eradicate These tropical forest ecosystems cover less than 10 … Biodiversity is not distributed evenly on Earth, and is richer in the tropics. The latter can cover large areas of fresh or salt water and remove the oxygen, causing a dead zone where nothing except anaerobic bacteria can survive.
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