This document discusses threats to agro-biodiversity from climatic change, population growth, cultural changes, environmental pollution, deforestation, and natural disasters. Climatic change affects food security, availability, access, and absorption and is projected to decrease rice and wheat yields by 6-10% by 2030. Population growth in India, the second most populous country, also threatens resources. Cultural changes from urbanization can influence farmer attitudes. Environmental pollution from pesticides, fertilizers, and other sources contaminates soil and water. Deforestation for agriculture and other uses damages habitats and is a driver of climate change. Natural disasters destroy lives, crops, infrastructure and supply systems.

1. THREATS TO
AGRO-BIODIVERSITY
Presented by,
Raihanathus Sahdhiyya A
I M.Sc. Microbiology,
TBAK college

2. AGROBIODIVERSITY??

4. DIMENSIONS
Genetic
resources
Components
of biodiversity
Abiotic factors
Socio
economic

5. THREATS

6. Climatic Change
Affects all the three aspects of food security
Availability
Access
Absorption
Global warming
Rain fall
Rise in sea level
Extreme weather events
Indian summer monsoon

7. 4-9 % impact on agriculture/year
Agriculture contributes 15% to India’s GDP
Climate change- about 1.5% loss in GDP.
By 2030, rice and wheat
about 6-10 %decrease in yields
1°C rise in temperature results in
loss of 4 metric tonnes (MT) of
wheat. Similarly, legumes are going
to be benefitted because of
elevated level of atmospheric CO2.

8. Population Growth
Overpopulation does not depend only on the size or density of the
population, but on the ratio of population to available sustainable
resources. It also depends on the way resources are used and
distributed amongst the population.
India – 2nd in highest population next to China

9. Cultural change
URBAN – INDUSTRIALIZATION culture
Farmers' attitudes and desires are influenced by their society's culture.

10. CULTURAL CHANGES:
Field appliances
Introduction of new crops
BARRIERS:
Respect for tradition
Belief in one’s own culture
Responsibilities and Social obligations
Traditional ceremonies

11. Environmental pollution

12. OTHER SIDE OF A COIN……………..
PESTICIDES
SOIL EROSION & SEDIMENTATION
FERTILIZERS
Cadmium
Fluoride
Radioactive elements
Heavy metals
LEACHING
RUNOFF
EUTROPHICATION
Nitrogen and
Phosphorous

13. Deforestation

14. clearing the Earth's forests on a large scale worldwide and resulting in
many land damages
One of the causes of deforestation is to clear land for pasture or crops
5%  CATTLE RANCHING,
19%  over-heavy LOGGING,
22%  PALM OIL plantations,
54%  SLASH & BURN farming
Loss of habitat for millions of species
A driver of climate change.
Deforestation

15. Natural Disaster
Earthquakes
Landslides
Flood
Drought
Fires
hailstorms

16. LOSSES…….
Human and animal life
Field crops,
Stored seeds,
Agricultural equipment/materials,
Their supply systems (e.g.
infrastructure)