Write about biogeographical classification of india

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Write about biogeographical classification of india

The concept of biogeography History Biogeography, the study of animal and plant distributions and known individually as zoogeography and phytogeographyrespectivelywas a subject that began to receive much attention in the 19th century.

One of the first modern delimitations of biogeographic regions was created in by the English ornithologist Philip L. Sclater, who based his division of the terrestrial world on the distributions of birds. In the s the biologist Adolf Engler devised a schema based on plant distributions. The phytogeographic work of Sir Joseph Dalton Hookera plant collector and systematist, and the zoogeographic work of Alfred Russel Wallace greatly influenced the work of Charles Darwin.

The Darwinian theory of evolutionaccordingly, was firmly rooted in the emerging biogeographic understanding of the era; in On the Origin of Species Darwin included two key chapters 12 and 13 on geographic distribution in which he referred to both Hooker and Wallace.

At high altitudes in the tropics Hooker had found plants that were normally restricted to temperate zones, and Darwin interpreted these observations as evidence of past climatic change.

Biogeography is the study of the biosphere and of human effects on plants and animals. According to a recent classification done by the Wild-Life Institute of India, the country has ten biogeographic zones: 1. Trans-Himalayan Region. The Himalayan ranges immediately north of the Great Himalayan range are called the Trans- Himalayas. India has different climate and topography in different parts and hence is termed as a mega diversity country. India occupies 10th place among plant rich countries of the world. It is essential to acquire knowledge about the distribution and environmental interaction of flora and fauna of India. Biogeographic classification of India is the division of India according to biogeographic characteristics. Biogeography is the study of the distribution of species, organisms, and ecosystems in geographic space and through geological time. There are ten biogeographic zones in India. Trans Himalayan zone.

Biotic distributions Geographic factors have played a significant role at every level of taxonomic division. Populations that become isolated by means of a geographic barrier will tend to diverge from their species.

Although these barriers—which include seaways, rivers, mountain ranges, deserts, and other hostile environments—appear minor, they nevertheless can put a wedge between taxaeventually causing related species, genera, families, and so on on up the taxonomic hierarchy to diverge.

write about biogeographical classification of india

An example of this mechanism is seen in the Gregory Rift Valley, the eastern branch of the East African Rift System; distinctive subspecies of wildebeest are represented on either side of the rift valley, with the subspecies Connochaetes taurinus albojubatus occurring on the east side and C.

Other mammals such as blue, or diadem, monkeys Cercopithecus mitis exhibit similar geographic variation. The broad Congo River in central Africa is a barrier between many congeneric species those that share the same genus of primates, such as the common chimpanzee Pan troglodytes found on the north side of the river and the pygmy chimpanzee P.

More significant biogeographic divisions occur between genera of the same family that live on different continents, as is the case with African elephants Loxodonta and Asian elephants Elephas.

Search form Biogeography is the study of the biosphere and of human effects on plants and animals.
Blog Archive The Trans-Himalayan region with its sparse vegetation has the richest wild sheep and goat community in the world. The snow leopard is found here, as is the migratory black-necked crane.
Biogeographic classification of India - Wikipedia India is one of the 12 mega biodiversity country of world. Most of these spots are located in the tropics:

Whole families or suborders may differ from one major biogeographic realm to another, as is seen in the primate divisions of Old World monkeys catarrhineswhich are found in Africa and Asia, and the New World monkeys platyrrhines from South America.

Page 1 of 5.Biogeography is the study of the biosphere and of human effects on plants and animals. According to a recent classification done by the Wild-Life Institute of India, the country has ten biogeographic zones: 1.

Trans-Himalayan Region. The Himalayan ranges immediately north of the Great Himalayan range are called the Trans- Himalayas. The classifications are based on vegetation and ecological criteria, including vegetation growth forms and structure, plant species (including the characteristic species combination of diagnostic, constant and dominant species), and ecological characteristics such as site, disturbance, bioclimate, and biogeography.

India has different climate and topography in different parts and hence is termed as a mega diversity country.

write about biogeographical classification of india

India occupies 10th place among plant rich countries of the world. It is essential to acquire knowledge about the distribution and environmental interaction of flora and fauna of India.

Geography of India India lies on the Indian Plate, the northern portion of the Indo-Australian Plate, whose continental crust forms the Indian subcontinent.

The country is situated north of the equator between 8°4' to 35°3' north latitude and 68°7' to 97°25' east longitude. [2]Area: Ranked 7th. Classification of Banks in India is done into four main plombier-nemours.com classes include commercial banks, savings banks, public sectorbanks and private sector banks.

Biogeographic classification of India is the division of India according to biogeographic characteristics. Biogeography is the study of the distribution of species, organisms, and ecosystems in geographic space and through geological time. There are ten biogeographic zones in India. Trans Himalayan zone.

Environmental Studies: Biogeographical classification of India