from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Of or designating the biogeographic region that includes the Arctic and Temperate areas of North America and Greenland.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- proper n. One of the major ecozones of the world, covering most of the North American continent.
from the GNU version of the Collaborative International Dictionary of English
- adj. Of or pertaining to a region of the earth's surface including all of temperate and arctic North America and Greenland. In the geographical distribution of animals, this region is marked off as the habitat certain species.
from The Century Dictionary and Cyclopedia
- In zoögeog., belonging to the northern part of the New World or western hemisphere: specifically applied to one of the six prime divisions of the earth's surface made by Sclater with reference to the geographical distribution of animals: distinguished from Neotropical in the New World and Palearctic in the Old.
There was also a big win for the Newmarket trainer Rae Guest as his filly Serious Attitude claimed the Grade One Nearctic Stakes.
Sierra de Manantlán (Jalisco and Colima): transition of the Nearctic and Neotropical biological realms; cloud forest and wild perennial corn (Zea diploperennis).
Also present are toucans (Ramphastos spp.), two guans (Pipile cujubi, Penelope pileata), many Nearctic migrants, parrots, and parakeets.
The Nearctic population of the red knot (C.c. islandica) and the curlew sandpiper (Calidris ferruginea) breeding on the Taymir Peninsula do not show such a correlation .
Winter visitors are comprised of the sandpipers (Calidris mauri and Micropalama himantopus), the blue-winged teal (Anas discors) and several Nearctic limicolaes.
Many Nearctic and Neotropical plants reach their southerly and northerly range limits, respectively, in this hotspot.
The biodiversity of Mesoamerica represents the confluence of flora and fauna from two biogeographic regions, the Nearctic of North America and the Neotropical of South and Central America and the Caribbean.
The temperate northern realms of the Nearctic and Palearctic are currently extensively cultivated and urbanized; however, the amount of land under cultivation and pasture seems to have stabilized in the Nearctic, with only small increases in the Palearctic in the last 40 years.
Many biogeographical studies, including a number of those cited in the MA, refer to eight terrestrial biogeographic realms — Australasian, Antarctic, Afrotropical, Indo-Malayan, Nearctic, Neotropical, Oceania, and Palearctic — and to biomes.
The forests of this ecoregion are also critical for migratory birds coming from Canada and the U.S. with 45% of the species, and 55% of the individuals present in the winter months in Jalisco listed as Nearctic migrants.