Distribution in global pattern of biodiversity

Distribution in the global pattern of biodiversity by Pooja Nishad

1. A Presentation on Distribution in Global P attern of Biodiversity S ubmitted by Submitted to P ooja N ishad Mr . Sachin Kumar Das M.Sc (Botany) Asst. Professor MATS University, Raipur (C.G)

2. Introduction Biodiversity is degree of veriation of life these can refer to genetic Veriation . Species veriation . Or Ecosystem veriation Within an area . Biome or planet

3. Biodiversity varise With chenges in latitude and altitude.

4. Pattern of Biodiversity Biodiversity is not uniform thought the world. There are latitudinal and altitudinal gradient besides of number of other. Georophical topographical And humidity gradient. Out of there latitudinal and altitudinal gradient are also called master gradient.

5. Latitudinal gradient:- Biodiversity is minimum arctic region, moderat in temperate region and maximum in tropic region ( latitudinal region of 23.5N to 23.5S) Colambia localed near the equator has nearly 1400 species of birds while.newyork (41.N) has 105 species and Greenland (71.N) has only 56 species of birds .

6. India has most than 1200 species of birds because most of is land area in tropical Latitude. Tropical rain forest of Amazon in South America has maximum biodiversity on earth. It has mor than 40000 app of plant 3000 fishes ,1300 of birds, 427 of mammals,427 of amphibians,387 of reptiles and of more tham 1,25000 invertebrates.

7. There might be up to two million insect species Yet to be discovered and name In these forest. The latitudinal Gradient Is produced due gradient of most adverse -adverse -Favorable climate for growth and Speciation.

8. In arctic area the growing priod restricted to a few weeks,few months In temprates region At other time of the year climate is severe with low temperature and little availability of water. In tropical region water availability and Temperature, Light is abundant Throughout the year.

9. 2.Altitudinal gradient:- It is observed when one ascends mountai biodiversity Is maximum at base decrease with the increase in altitude Rise in altitude also decrease mean temperature, a fall of 6.5*c for every 1000m increase In altitude. Lower temperature and greater seasonal variability reduces diversity.

10. Thankyou