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Predation and competition with introduced largemouth bass, water level fall after the 1976 Guatemala earthquake, and degradation of breeding sites due to reed-cutting and tourism development. [ 603 ] 1984. Green blossom. Epioblasma torulosa gubernaculum.
Mass extinctions are characterized by the loss of at least 75% of species within a geologically short period of time (i.e., less than 2 million years). [18] [51] The Holocene extinction is also known as the "sixth extinction", as it is possibly the sixth mass extinction event, after the Ordovician–Silurian extinction events, the Late Devonian extinction, the Permian–Triassic extinction ...
The Holocene (/ ˈhɒl.əsiːn, - oʊ -, ˈhoʊ.lə -, - loʊ -/) [ 2 ][ 3 ] is the current geological epoch, beginning approximately 11,700 years ago. [ 4 ] It follows the Last Glacial Period, which concluded with the Holocene glacial retreat. [ 4 ] The Holocene and the preceding Pleistocene [ 5 ] together form the Quaternary period.
This is a list of North American animals 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) [A] and continues to the present day. [1] Recently extinct animals in the West Indies and Hawaii are in their own respective lists.
This is a list of European 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) A and continues to the present day. 1. This list includes the European continent and its surrounding islands. All large islands in the Mediterranean Sea are ...
The Holocene extinction event is currently under way. [12] Factors in mass extinctions include continental drift, changes in atmospheric and marine chemistry, volcanism and other aspects of mountain formation, changes in glaciation, changes in sea level, and impact events. [10]
Map of Asia. This is a list of Asian animals 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) [ a ] and continues to the present day. [ 1 ] This list includes the Asian continent and its surrounding islands, including Cyprus.
Holocene climatic optimum. The Holocene Climate Optimum (HCO) was a warm period in the first half of the Holocene epoch, that occurred in the interval roughly 9,500 to 5,500 years BP, [ 1 ] with a thermal maximum around 8000 years BP. It has also been known by many other names, such as Altithermal, Climatic Optimum, Holocene Megathermal ...