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During the Middle Holocene, western North America was drier than present, with wetter winters and drier summers. [86] After the end of the thermal maximum of the HCO around 4,500 BP, the East Greenland Current underwent strengthening. [87] A massive megadrought occurred from 2,800 to 1,850 BP in the Great Basin. [88]
The Holocene glacial retreat is a geographical phenomenon that involved the global retreat of glaciers (deglaciation) that previously had advanced during the Last Glacial Maximum. Ice sheet retreat initiated ca. 19,000 years ago and accelerated after ca. 15,000 years ago.
The Holocene extinction, also referred to as the Anthropocene extinction, [3] [4] is an ongoing extinction event caused by human activities during the Holocene epoch. This extinction event spans numerous families of plants [ 5 ] [ 6 ] [ 7 ] and animals, including mammals , birds, reptiles, amphibians , fish, and invertebrates , impacting both ...
A chronology of climatic events of importance for the Last Glacial Period, about the last 120,000 years The Last Glacial Period caused a much lower global sea level.. The Last Glacial Period (LGP), also known as the Last glacial cycle, occurred from the end of the Last Interglacial to the beginning of the Holocene, c. 115,000 – c. 11,700 years ago, and thus corresponds to most of the ...
Eastern North America 1880 [288] Hunting. It's been argued (based on genetic data) that most or all elk subspecies in North America are actually the same, which would be C. c. canadensis due to being named first. [289] [290] 1868 [291] Kawaihae hibiscadelphus: Hibiscadelphus bombycinus: Kawaihae, Hawaii, United States [292] 1998 (IUCN ...
Map of North America. 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.
Northwestern North America reached peak warmth first, from 11,000 to 9,000 years ago, but the Laurentide Ice Sheet still chilled eastern Canada. Northeastern North America experienced peak warming 4,000 years later. Along the Arctic Coastal Plain in Alaska, there are indications of summer temperatures 2–3 °C warmer than now. [11]
The last advance covered most of northern North America between c. 95,000 and c. 20,000 years before the present day and, ... near the end of the last ice age, ...