sustainablity issue in fisheries.

1. Presented by-
Abhishek gautam
Gaurav Kumar

2.  Ghost fishing
 Overfishing
 Damming of river
 IUU fishing
 Interlinking of river
 Pollution
 Bycatch and discard
 Interlinking of river climate change

3.  “Ghost fishing” is a part of the
global marine debris issue that
impacts marine organisms and the
environment. Lost or discarded
fishing gear.
 Causing damage to underwater
habitats such as coral reefs and
benthic fauna; and contributing to
marine pollution.

4. Catching so many fish at a time can result in an immediate payoff for
fishers.
 Recruitment Overfishing
 Growth Overfishing
 Ecosystem Overfishing

5. Growth overfishing –It is a level of fishing in which young ones are
caught before they grow and an optimum marketable size.
Recruitment overfishing- A level of fishing in which the parent stock
is caught to the extent that no recruitment and in sufficient recruitment
would be taken place to maintain the population.

8. Negative impacts on fishes Migratory fish and their life cycle
which are-
 Reproduction
 Production of juveniles
 Growth and sexual maturation
 The life cycle of diadromous species takes place partly in fresh water
and partly in sea water.

9. Illegal, unreported and unregulated (IUU) fishing is a broad term
that groups distinct types of fishing activities undermining sustainable
management
Illegal fishing
 It includes fishing in a country's waters without permission or against
its laws.

10. Unreported fishing .
 Involves non-reporting or misreporting of information on
fishing operations and their catches to the relevant national or
RFMO (Regional Fisheries Management Organisations)
authorities.

11. Unregulated fishing
 includes activities in RFMO areas conducted by vessels
without nationality,
 It also covers fishing in the high seas outside RFMO
responsibility, including fishing of species for which no RFMO
measures apply

12.  The idea of interlinking rivers was first mooted by the Chief Engineer
of the Madras Presidency in 1919, Sir Arthur Cotton
 River linking might have positive as well as negative impacts on
aquatic ecosystems, such as -
 Water quality changes
 Loss of habitat
 Alteration in spawning and breeding grounds,
 Effect on fish migration
 Changes in land-ocean interactions
 Effect on fish ecology and biodiversity,
 Impact of inland navigation and/or effect on fish production.

13.  Pollution has been defined as ‘any man made alternation
of physical, chemical or biological quality of the water
which results in unacceptable depreciation of the utility of
the environmental value of water.

14.  Agricultural wastes
 Industrial organic and inorganic wastes
 Domestic sewage
 Acid rain

15. Bycatch-
 Including all non-target animal and non-living material which
are caught during fishing
 Species that are caught accidently.
 FAO estimated; 7.3 million tonnes of fish is discarded every
year
 Hundreds of thousand of sea turtles and marine mammals,
including dolphins die as bycatch.

17.  The FAO defines discard as the portion of the catch that is
thrown back into the sea either dead or alive

18. Interlinking of river change the climate such as-
Physical changes
 Temperature
 Dissolve oxygen
Chemically change
 pH
 Alkalinity
 Total hardness

19. Sarda Yamuna
 Temperature – 18 – 42.5°C
 DO - 5.6 - 6.12mg/L
 pH- 6.8-8.4
 Alkalinity - 18.99-54.8mg/L
 Total hardness-154-180mg/L
 Length - 350 km
(Mitra et al., 2005)
 Temperature – 15 – 36.3°C
 DO- 5 - 7.5mg/L
 pH- 7.5-11.8
 Alkalinity - 180-250mg/L
 Total hardness- 200-250mg/L
 Length- 1,376km
(Malik et al., 2014)