Distribution in the global pattern of biodiversity by Pooja Nishad

1. A
Presentation
on
Distribution in Global Pattern of Biodiversity
Submitted by Submitted to
Pooja Nishad 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. 1. 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