biodiversity a level biology definition


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The industrial revolution of the mid-eighteenth to mid-nineteenth century in Europe turned skies black with smoke and poisoned rivers and plant life, killing consumers, too. Consider the American gray squirrel decimating red squirrel populations in England and the introduction of the Colorado beetle in Europe which caused countless potato crops to fail, for example. 1. The diversity of plant and animal life in a particular habitat (or in the world as a whole); a high level of biodiversity is desirable.Pertaining to the diversity and frequency of organisms in a given area. In other regions, the higher temperatures cause destruction. Extinction. As our population grows together with our need for food, water, industry, transportation, and home comforts, it takes over natural ecosystems and replaces them with unnatural ones. Match. This A-Level Biology section of Revision Science explains biodiversity classification including examples. Biodiversity is not only necessary for survival, but it is also extremely beautiful. 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. From size to color, to diet, to function, and everything in between. 2. In other terrestrial, aquatic or marine environments, a lack of biodiversity of plant life (producers) means the numbers of consumers are limited. Learn why long periods of geographical isolation have led to a large number of endemic species - native species that are not found anywhere else... Meet some of New Zealand's unique fauna, including endemic insects, frogs, reptiles, birds, and mammals, and investigate why many have such distinctive features. Biodiversity. 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. Breaking away from the supercontinent Gondwana about 80 million years ago, it has developed a distinct flora and fauna as a result of long geological isolation. New Zealand is known for its unique biodiversity, caused by its remarkable geography and geologic history. We are the same species but have genetic variations which make us diverse. In the soil, the greatest biomass is composed of micro­organisms, where fungi are by far the most common. Mangrove trees – a diverse group of around eighty different species – have diversified to successfully survive and reproduce in salt water. One might also look at the biodiversity of the human gut, or of a teaspoon of soil. Upload; Login; Signup; Submit Search. Biodiversity is distributed into different components based on the level of differences. Biologydictionary.net Editors. Biodiversity, or Biological Diversity, is the sum of all the different species of plants, animals, fungi and microbial organisms that live on Earth, including the various ecosystems in which they live on.Biodiversity also includes the genetic information that these organisms contain. 3. 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. These three examples of ecosystem diversity contain further examples as subgroups. Threats to biodiversity have adverse effects on the ecosystem. Which of these is the most biodiverse terrestrial ecosystem? Biodiversity is a compound word derived from ‘biological … Fox populations are large, feeding on rats, mice, and garbage. PLAY. A Level Biology - Biodiversity. By removing too many of one species of fish, fishers allow other species to take over, perhaps upsetting the delicate balance between producer and consumer. Terms in this set (11) Species richness. Species diversity: It refers to the variety of species within a region. Watch: Biodiversity – a video that explains biodiversity, created by The Society for Experimental Biology (SEB). Biodiversity refers to the variety of species found in an ecosystem. Total number of different species. In the context of biodiversity, it therefore has: 5. If one species of plant type produces one type of flower for one species bee, who produces honey for one species of honey badger who provides food for one cheetah, the balance is much too delicate. A healthy ecosystem has a rich level of biodiversity. Ecological biodiversity is measured by looking at its three levels of genetic, species and ecosystem diversity. damaging to the well-being of humans and other organisms and steps are being taken to eradicate And with fewer herbivores, one can expect reduced populations of omnivores and carnivores. This lesson uses the Toheroa Abundance Project as an example of how Mātauranga Māori is influencing ecological outcomes. Deforestation also leads to soil erosion where other species of plant suffer, with the forming of desert-like areas as a result. There are different meanings of biodiversity, and it can be a measure of the range of habitats, from a small local habitat to the Earth. Deforestation removes trees responsible for the conversion of carbon dioxide into oxygen.

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