latitudinal zonation

Mira otros diccionarios:

• Dinosaur paleobiogeography — is the study of dinosaur geographic distribution, based on evidence in the fossil record. Late Cretaceous North America Centrosaurus apertus. Thomas M. Lehman, in a study of Late Cretaceous dinosaur distribution, concluded that they were… …   Wikipedia

• biogeographic region — Introduction       area of animal and plant distribution having similar or shared characteristics throughout.       It is a matter of general experience that the plants and animals of the land and inland waters differ to a greater or lesser… …   Universalium

• Bakker , Robert — (1945–) American paleontologist The son of an electrical engineer, Bakker was born in Ridgewood, New Jersey, and educated at Yale and at Harvard, where he completed his PhD in 1976. After teaching for eight years at Johns Hopkins University,… …   Scientists

• Silurian Period — Interval of geologic time, 443–417 million years ago. The third period of the Paleozoic Era, the Silurian follows the Ordovician Period and precedes the Devonian. It marks the first appearance of land plants and jawed fishes. The continents were… …   Universalium

• Cambrian Period — Oldest time division of the Paleozoic Era. During the Cambrian, 543–490 million years ago, there were widespread seas and several scattered landmasses. The largest continent was Gondwana. The average climate was probably warmer than today, with… …   Universalium

• Species richness — is the number of species in a given area. It is represented in equation form as S.Typically, species richness is used in conservation studies to determine the sensitivity of ecosystems and their resident species. The actual number of species… …   Wikipedia

• Lentic ecosystems — are the ecosystems of lakes, ponds and swamps. Included in these environments are the biotic interactions (amongst plants, animals and micro organisms) together with the abiotic interactions (physical and chemical).cite book | last = Brown first …   Wikipedia

• List of Cumacea literature — Extensive literature list on Cumaceans. Contents: Top · 0–9 · A B C D E F G H I J K L M N O P Q R S T U V W X Y Z A …   Wikipedia

• North America — North American. the northern continent of the Western Hemisphere, extending from Central America to the Arctic Ocean. Highest point, Mt. McKinley, 20,300 ft. (6187 m); lowest, Death Valley, 276 ft. (84 m) below sea level. 400,000,000 including… …   Universalium

• plant — plantable, adj. plantless, adj. plantlike, adj. /plant, plahnt/, n. 1. any member of the kingdom Plantae, comprising multicellular organisms that typically produce their own food from inorganic matter by the process of photosynthesis and that… …   Universalium

• PALÉOCLIMATOLOGIE — La paléoclimatologie a pour but de reconstituer les conditions climatiques ayant régné à la surface de notre planète dans le passé et d’expliquer leur évolution. Elle relève donc au premier chef de la géologie pour la reconstitution des faits,… …   Encyclopédie Universelle