another form of water pollution

7/25/2019 Another Form of Water Pollution

1/14

ANOTHER FORM OF

WATER POLLUTION


2/14

PetroleumHeat

Radioactive Substance


3/14


4/14

The Efects o Petroleum onAquatic Ecosstems


5/14

&hen oil is spilled into an aquatic environment, it can harm

organisms that live on, around, and under the #ater

surface by both chemical to'icity and by coating and

smothering #ildlife. "his has both short(term and long(term

eects on all parts of the marine food #eb, including long(

term damage to breeding and migration habitats that

aects future generations of marine life. Short(term eects

vary #ith the type of environment, amount of oil, eect of

#aves and #eather, and type of oil) light, medium or

heavy.


6/14

"he loss of predators has a cascade eect on ecosystems,

and oshore, the most vulnerable species are those found

on the sea surface. Since most oils *oat, the creatures most

aected are surface predators, such as sea otters and

seabirds. Studies have found that oil destroys the #ater(

repelling abilities of fur and feathers and their ability to trap

#arm air #hen they become coated and matted. +s a

result, marine mammals and seabirds can lose their

buoyancy and die of hypothermia. If they ingest it, it can

Ofshore an! "oastal Waters


7/14

orals, sea stars, and sea grass all inhabit shallo#

inshore #aters, and can become coated and

smothered by an oil spill. Sea stars are covered by

tiny hair(like cilia #hich help transport #ater into

their vascular organs. &hen the cilia and internal

organs get coated #ith oil, it can lead to degraded

function and death of the sea star. It can reduce

photosynthesis, cause tissue damage and even

#hallo$ Inshore Waters


8/14

-ne of the marine habitats most vulnerable

to environmental change is the mangrove

forest. -il spills that coat the e'posed roots

of mangrove trees can plug up the air(

breathing pores, or lenticels, and suocate

the trees.

Man%ro&es'#alt Marshes


9/14

HEAT


10/14

"he most common physical assessment of #ater

quality is the measurement of temperature.

"emperature impacts both the chemical and

biological characteristics of surface #ater. It

aects the dissolved o'ygen level in the #ater,

photosynthesis of aquatic plants, metabolic rates

of aquatic organisms, and the sensitivity of these

organisms to pollution, parasites and disease.


11/14

"hermal pollution is the introduction of #ater that is #armer

than the body of #ater into #hich it *o#s. It generally occurs

near po#er plants. "hese industries discharge hot #ater that

has been used to cool equipment directly into streams. +nother

source of thermal pollution is urban runo. "his is #ater that has

been heated as it *o#ed over parking lots, streets and

side#alks. "he problem of lo# dissolved o'ygen levels is

magnied by the fact that the metabolic rates of aquatic plants

increase as #ater temperature rises, thus increasing their

biochemical o'ygen demand. $o# dissolved o'ygen levels leave

aquatic organisms in a #eakened physical state and more


12/14

RA(IOA"TI)E #U*#TAN"E


13/14

Radioactive #aste can vary greatly in its physical and

chemical form. It can be a solid, liquid, gas, or even

something in bet#een, such as sludge. +ny given

radioactive #aste can be primarily #ater, soil, paper,

plastic, metal, ash, glass, ceramic, or a mi'ture of many

dierent physical forms. "he chemical form of

radioactive #aste can vary as #ell. Radioactive #aste

can contain radionuclides of very light elements, such

as radioactive hydrogen tritium!, or of very heavy

elements, such as uranium. Radioactive #aste is


14/14

Studies from previous releases of nuclear material in

the Irish, /ara and 0arents Seas, as #ell as in the

Pacic -cean, sho# that such radioactive material

does travel #ith ocean currents, is deposited in

marine sediment, and does climb the marine food

#eb. 0ut #hat impact this radioactive contamination

has on marine life and humans is still unclear. "hat

may be because containment vessels around some of

the dumped reactors are preventing the escape of

radiation.

another form of water pollution

Documents