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Holocene Extinction
The Holocene extinction, also referred to as the Anthropocene extinction or the sixth mass extinction, is an ongoing extinction event caused exclusively by human activities during the Holocene epoch. This extinction event spans numerous families of plants and animals, including mammals, birds, reptiles, amphibians, fish, and invertebrates, impacting both terrestrial and marine life, marine species. Widespread degradation of biodiversity hotspots such as coral reefs and rainforests has exacerbated the crisis. Many of these extinctions are undocumented, as the species are often undiscovered before their extinctions. Current extinction rates are estimated at 100 to 1,000 times higher than natural background extinction rates and are accelerating. Over the past 100–200 years, biodiversity loss has reached such alarming levels that some conservation biologists now believe humankind, human activities have triggered a mass extinction, or are on the cusp of doing so. As such, after the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pioneers In South Africa (1914) (14576727409)
Pioneer commonly refers to a person who is among the first at something that is new to a community. A pioneer as a settler is among the first settling at a place that is new to the settler community. A historic example are American pioneers, persons in American history who migrated westward to settle in what is now the Western and Midwestern United States. Pioneer, The Pioneer, or pioneering may also refer to: Companies and organizations *Pioneer Aerospace Corporation *Pioneer Chicken, an American fast-food restaurant chain *Pioneer Club Las Vegas, a casino in Las Vegas, Nevada, U.S. *Pioneer Corporation, a Japanese electronics manufacturer *Pioneer Energy, a Canadian gas station chain *Pioneer Entertainment, a Japanese anime company *Pioneer Fund, racist foundation, 1937 *Pioneer Hi-Bred, a U.S.-based agriculture company *Pioneer Hotel & Gambling Hall, Laughlin, Nevada, U.S. *Pioneer Instrument Company, an American aeronautical instrument manufacturer *Pioneer movement, a commu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Humankind
Humans (''Homo sapiens'') or modern humans are the most common and widespread species of primate, and the last surviving species of the genus ''Homo''. They are great apes characterized by their hairlessness, bipedalism, and high intelligence. Humans have large brains, enabling more advanced cognitive skills that facilitate successful adaptation to varied environments, development of sophisticated tools, and formation of complex social structures and civilizations. Humans are highly social, with individual humans tending to belong to a multi-layered network of distinct social groups — from families and peer groups to corporations and political states. As such, social interactions between humans have established a wide variety of values, social norms, languages, and traditions (collectively termed institutions), each of which bolsters human society. Humans are also highly curious: the desire to understand and influence phenomena has motivated humanity's development ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apex Predator
An apex predator, also known as a top predator or superpredator, is a predator at the top of a food chain, without natural predators of its own. Apex predators are usually defined in terms of trophic dynamics, meaning that they occupy the highest trophic levels. Food chains are often far shorter on land, usually limited to being secondary consumers – for example, Gray wolf, wolves prey mostly upon large herbivores (primary consumers), which eat plants (primary producers). The apex predator concept is applied in wildlife management, conservation biology, conservation, and ecotourism. Apex predators have a long evolutionary history, dating at least to the Cambrian period when animals such as ''Anomalocaris'' and ''Timorebestia'' dominated the seas. Humans have for many centuries interacted with other apex predators including the wolf, Bird of prey, birds of prey, and cormorants to hunt game animals, birds, and fish respectively. More recently, humans have started interacting ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Acceleration
The Great Acceleration is the dramatic, continuous and roughly simultaneous surge across a large range of measures of human activity, first recorded in the mid-20th century and continuing into the early 21st century. Within the concept of the proposed epoch of the Anthropocene, these measures are specifically those of humanity's impact on Earth's geology and its ecosystems. Within the Anthropocene epoch, the Great Acceleration can be variously classified as its only age to date, one of its many ages (depending on the epoch's proposed start date), or its defining feature that is thus not an age, as well as other classifications. Environmental historian J. R. McNeill has argued that the Great Acceleration is idiosyncratic of the current age and is set to halt in the near future; that it has never happened before and will never happen again. However, climate change scientist and chemist Will Steffen's team have found evidence to be inconclusive to either confirm or refute such a cl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habitat Destruction
Habitat destruction (also termed habitat loss or habitat reduction) occurs when a natural habitat is no longer able to support its native species. The organisms once living there have either moved elsewhere, or are dead, leading to a decrease in biodiversity and species numbers. Habitat destruction is in fact the leading cause of biodiversity loss and species extinction worldwide. Humans contribute to habitat destruction through the use of natural resources, agriculture, industrial production and urbanization (urban sprawl). Other activities include mining, logging and trawling. Environmental factors can contribute to habitat destruction more indirectly. Geological processes, climate change, introduction of invasive species, ecosystem nutrient depletion, water and noise pollution are some examples. Loss of habitat can be preceded by an initial habitat fragmentation. Fragmentation and loss of habitat have become one of the most important topics of research in ecology as the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Extinct Animals Of The Hawaiian Islands
This is a list of Hawaiian animal species extinct in the Holocene that covers extinctions from the Holocene epoch, a geologic epoch that began about 11,650 years before present (about 9700 BCE) and continues to the present day. The Hawaiian Islands include the eight major islands (the Windward Islands) and the small islands and atolls of the Northwestern Hawaiian Islands. They are all part of the U.S. state of Hawaii, except Midway Atoll, which is a separate U.S. territory. The islands of East Polynesia (including New Zealand, Hawaii, and Easter Island) were among the last habitable places on earth colonized by humans. Estimates for the timing of Polynesian settlement in Hawaii have been uncertain, but a 2010 study based on radiocarbon dates of more reliable samples suggests that Hawaii was first settled by humans roughly between 1219 and 1266 CE. In 1778, British explorer James Cook became the first recorded European to arrive in Hawaii. An influx of European and Ameri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Madagascar And Indian Ocean Island Animals Extinct In The Holocene
This is a list of Madagascar and Indian Ocean Island animals extinct in the Holocene that covers extinctions from the Holocene epoch, a Geologic time scale, geologic epoch that began about 11,650 years Before Present, before present (about 9700 Common Era, BCE) and continues to the present day. The Madagascar, Republic of Madagascar is a large island country in the Indian Ocean, off the coast of East Africa. Other Indian Ocean islands near Madagascar include the Mascarene Islands (split between the Mauritius, Republic of Mauritius and the French department of Réunion), the Seychelles, Republic of Seychelles, and the Comoro Islands (split between the Comoros, Union of Comoros and the French department of Mayotte). Madagascar and the Indian Ocean islands are a biodiversity hotspot. The wildlife of Madagascar evolved in isolation and is distinct from the Fauna of Africa, wildlife of Africa and other continents. Approximately 90 percent of all plant and animal species found in Mada ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Extinct Animals Of New Zealand
This is a list of New Zealand species extinct in the Holocene that covers extinctions from the Holocene epoch, a geologic epoch that began about 11,650 years Before Present (about 9700 BCE) and continues to the present day. This epoch equates with the latter third of the Haweran Stage of the Wanganui epoch in the New Zealand geologic time scale. The North Island and South Island are the two largest islands of New Zealand. Stewart Island is the largest of the smaller islands. New Zealand proper also includes outlying islands such as the Chatham Islands, Kermadec Islands, and New Zealand Subantarctic Islands. Only New Zealand proper is represented on this list, not the Realm of New Zealand. For extinctions in the Cook Islands, Niue, or Tokelau, see the List of Oceanian animals extinct in the Holocene. The islands of East Polynesia (including New Zealand, Hawaii, and Easter Island) were among the last habitable places on Earth colonised by humans. The first settlers of New ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diversity And Distributions
Diversity, diversify, or diverse may refer to: Business * Diversity (business), the inclusion of people of different identities (ethnicity, gender, age) in the workforce * Diversity marketing, marketing communication targeting diverse customers * Supplier diversity, the use of diverse suppliers * Team diversity Politics * Diversity (politics), the political and social policy of encouraging tolerance for people of different cultural and racial backgrounds * Diversity Immigrant Visa or Green Card Lottery, a United States immigration program * Diversity jurisdiction, a concept under which U.S. federal courts can hear suits between parties from different states * Diversity training, the process of educating people to function in a diverse environment * Cultural diversity, the respect of different cultures and interculturality * Functional diversity (disability), a term for special needs, disability, impairment and handicap * Gerodiversity, a multicultural approach to issues o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Megaherbivore
Megaherbivores (Greek :wiktionary:μέγας, μέγας megas "large" and Latin ''herbivora'' "herbivore") are large herbivores that can exceed in weight. The earliest herbivores to reach such sizes like the Pareiasauria, pareiasaurs appeared in the Permian period. During most of the Mesozoic, the megaherbivore niche was largely dominated by Dinosaur, dinosaurs up until their extinction during the Cretaceous–Paleogene extinction event. After this period, small mammalian species evolved into large herbivores in the Paleogene. As part of the Late Pleistocene megafauna extinctions, 80% of megaherbivore species became extinct, with megaherbivores becoming entirely extinct in Europe, Australia and the Americas. Recent megaherbivores include elephants, Rhinoceros, rhinos, Hippopotamus, hippos, and giraffes. There are nine extant species of terrestrial megaherbivores living in Africa and Asia. The African bush elephant is the largest extant species. Extant megaherbivores are keyst ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Late Pleistocene Megafauna Extinctions
The Late Pleistocene to the beginning of the Holocene saw the extinction of the majority of the world's megafauna, typically defined as animal species having body masses over , which resulted in a collapse in faunal density and diversity across the globe. The extinctions during the Late Pleistocene are differentiated from previous extinctions by their extreme size bias towards large animals (with small animals being largely unaffected), and widespread absence of ecological succession to replace these extinct megafaunal species, and the regime shift of previously established faunal relationships and habitats as a consequence. The timing and severity of the extinctions varied by region and are generally thought to have been driven by humans, climatic change, or a combination of both. Human impact on megafauna populations is thought to have been driven by hunting ("overkill"), as well as possibly environmental alteration. The relative importance of human vs climatic factors in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Newsweek
''Newsweek'' is an American weekly news magazine based in New York City. Founded as a weekly print magazine in 1933, it was widely distributed during the 20th century and has had many notable editors-in-chief. It is currently co-owned by Dev Pragad, the president and chief executive officer (CEO), and Johnathan Davis, who sits on the board; each owns 50% of the company. In August 2010, revenue decline prompted Graham Holdings, the Washington Post Company to sell ''Newsweek'' to the audio pioneer Sidney Harman for one US dollar and an assumption of the magazine's liabilities. Later that year, ''Newsweek'' merged with the news and opinion website ''The Daily Beast'', forming The Newsweek Daily Beast Company, later called ''NewsBeast''. ''Newsweek'' was jointly owned by the estate of Harman and the company IAC (company), IAC. ''Newsweek'' continued to experience financial difficulties, leading to the suspension of print publication at the end of 2012. In 2013, IBT Media acquired ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
