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Depauperate Ecosystem
A depauperate ecosystem is an ecosystem which is lacking in numbers or variety of species, often because it lacks enough stored chemical elements and resources required for life. Thus, depauperate ecosystems often cannot support rapid growth of flora and fauna, high biomass density, and high biological diversity."Environmental Science: Earth as a Living Planet", Daniel B. Botkin, Edward A. Keller, Fifth Edition, p. 186, An urchin barren is an example of a depauperate ecosystem. As it is a biological community of interacting organisms and their physical environment, when such ecosystem is depauperate, it means that the area is poor in ecological resources, both in quantity and diversity. An example of a depauperate environment is Muirfield Seamount The Muirfield Seamount is a submarine mountain located in the Indian Ocean approximately 130 kilometres (70 nautical miles) southwest of the Cocos (Keeling) Islands. The Cocos Islands are an Australian territory, and therefore the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ecosystem
An ecosystem (or ecological system) consists of all the organisms and the physical environment with which they interact. These biotic and abiotic components are linked together through nutrient cycles and energy flows. Energy enters the system through photosynthesis and is incorporated into plant tissue. By feeding on plants and on one another, animals play an important role in the movement of matter and energy through the system. They also influence the quantity of plant and microbial biomass present. By breaking down dead organic matter, decomposers release carbon back to the atmosphere and facilitate nutrient cycling by converting nutrients stored in dead biomass back to a form that can be readily used by plants and microbes. Ecosystems are controlled by external and internal factors. External factors such as climate, parent material which forms the soil and topography, control the overall structure of an ecosystem but are not themselves influenced by the ecosystem. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biomass
Biomass is plant-based material used as a fuel for heat or electricity production. It can be in the form of wood, wood residues, energy crops, agricultural residues, and waste from industry, farms, and households. Some people use the terms biomass and biofuel interchangeably, while others consider biofuel to be a ''liquid'' or ''gaseous'' fuel used for transportation, as defined by government authorities in the US and EU. The European Union's Joint Research Centre defines solid biofuel as raw or processed organic matter of biological origin used for energy, such as firewood, wood chips, and wood pellets. In 2019, biomass was used to produce 57 EJ (exajoules) of energy, compared to 190 EJ from crude oil, 168 EJ from coal, 144 EJ from natural gas, 30 EJ from nuclear, 15 EJ from hydro and 13 EJ from wind, solar and geothermal combined. Approximately 86% of modern bioenergy is used for heating applications, with 9% used for transport and 5% for electricity. Most of the global b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biological Diversity
Biodiversity or biological diversity is the variety and variability of life on Earth. Biodiversity is a measure of variation at the genetic (''genetic variability''), species (''species diversity''), and ecosystem (''ecosystem diversity'') level. Biodiversity is not distributed evenly on Earth; it is usually greater in the tropics as a result of the warm climate and high primary productivity in the region near the equator. Tropical forest ecosystems cover less than 10% of earth's surface and contain about 90% of the world's species. Marine biodiversity is usually higher along coasts in the Western Pacific, where sea surface temperature is highest, and in the mid-latitudinal band in all oceans. There are latitudinal gradients in species diversity. Biodiversity generally tends to cluster in hotspots, and has been increasing through time, but will be likely to slow in the future as a primary result of deforestation. It encompasses the evolutionary, ecological, and cultural proces ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Urchin Barren
An urchin barren is an area of the shallow part of the ocean where the population growth of sea urchins has gone unchecked, causing destructive grazing of kelp forests. Process Sea urchins eat kelp holdfasts. This can be caused by a lack of sea otters or other predators in the area, which makes it extremely important to protect the ecological balance in a kelp forest. Keystone species such as the sea otter help maintain healthy kelp communities; however, likely because of increased killer whale predation, their numbers are in decline in areas of Western Alaska. Off the California coast, storm runoff, erosion and polluted water allow less light to penetrate, weakening the kelp. Sea urchins then can move in and settle. Despite their name, urchin barrens are usually abundant with marine invertebrate life, echinoderms in particular. Species such as the sunflower starfishes, brittle stars, and the purple sea urchin are common. Although macrofauna such as these are aplenty, there is l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muirfield Seamount
The Muirfield Seamount is a submarine mountain located in the Indian Ocean approximately 130 kilometres (70 nautical miles) southwest of the Cocos (Keeling) Islands. The Cocos Islands are an Australian territory, and therefore the Muirfield Seamount is within Australia's Exclusive Economic Zone (EEZ). The Muirfield Seamount is a submerged archipelago, approximately in diameter and below the surface of the sea. A 1999 biological survey of the seamount performed by the Australian Commonwealth Scientific and Industrial Research Organisation (CSIRO) revealed that the area is depauperate. The Muirfield Seamount was discovered accidentally in 1973 when the cargo ship MV ''Muirfield'' (a merchant vessel named after Muirfield, Scotland) was underway in waters charted at a depth of greater than , when she suddenly struck an unknown object, resulting in extensive damage to her keel.Calder, Nigel. ''How to Read a Navigational Chart: A Complete Guide to the Symbols, Abbreviations, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karen B
Karen may refer to: * Karen (name), a given name and surname * Karen (slang), a term and meme for a demanding woman displaying certain behaviors People * Karen people, an ethnic group in Myanmar and Thailand ** Karen languages or Karenic languages * House of Karen, a historical feudal family of Tabaristan, Iran * Karen (singer), Danish R&B singer Places * Karen, Kenya, a suburb of Nairobi * Karen City or Hualien City, Taiwan * Karen Hills or Karen Hills, Myanmar * Karen State, a state in Myanmar Film and television * ''Karen'' (1964 TV series), an American sitcom * ''Karen'' (1975 TV series), an American sitcom * ''Karen'' (film), a 2021 American crime thriller Other uses * Karen (orangutan), the first to have open heart surgery * AS-10 Karen or Kh-25, a Soviet air-to-ground missile * Kiwi Advanced Research and Education Network * Tropical Storm Karen (other) See also * Karren (name) * Karyn (given name) * Keren, Eritrea a city * Caren (disambigu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ecosystems
An ecosystem (or ecological system) consists of all the organisms and the physical environment with which they interact. These biotic and abiotic components are linked together through nutrient cycles and energy flows. Energy enters the system through photosynthesis and is incorporated into plant tissue. By feeding on plants and on one another, animals play an important role in the movement of matter and energy through the system. They also influence the quantity of plant and microbial biomass present. By breaking down dead organic matter, decomposers release carbon back to the atmosphere and facilitate nutrient cycling by converting nutrients stored in dead biomass back to a form that can be readily used by plants and microbes. Ecosystems are controlled by external and internal factors. External factors such as climate, parent material which forms the soil and topography, control the overall structure of an ecosystem but are not themselves influenced by the ecosystem. Interna ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ecology Terminology
Ecology () is the study of the relationships between living organisms, including humans, and their physical environment. Ecology considers organisms at the individual, population, community, ecosystem, and biosphere level. Ecology overlaps with the closely related sciences of biogeography, evolutionary biology, genetics, ethology, and natural history. Ecology is a branch of biology, and it is not synonymous with environmentalism. Among other things, ecology is the study of: * The abundance, biomass, and distribution of organisms in the context of the environment * Life processes, antifragility, interactions, and adaptations * The movement of materials and energy through living communities * The successional development of ecosystems * Cooperation, competition, and predation within and between species * Patterns of biodiversity and its effect on ecosystem processes Ecology has practical applications in conservation biology, wetland management, natural resource management (ag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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