This section should give knowledge
regarding the different threats of
ballast water marine species are being
carried around the world in ships
ballast water when discharged into new
environments they may become invasive
and severely disrupt the native ecology
impact economic activities such as
fisheries and cause disease and even
death in humans unlike an oil spill
which can be cleaned up the effects of
marine species introductions are usually
irreversible zestimate did the more than
7,000 different species are carried
around the world in ships ballast each
day every nine weeks a marine species
invades a new environment somewhere in
the world the following species have
already hitchhiked with ballast water
around the world and created damage to
the environment North American comb
jelly North Pacific sea star zebra
mussel asian kelp european green crap
round goby toxic algae mitten crap
producer on water flea collar click on
the icons for more information
North American comb jelly name opsys
Ligeia native to eastern seaboard of the
americas introduced to black as off and
Caspian Seas impacts reproduces rapidly
self fertilizing hermaphrodite under
favorable conditions
excessively on zooplankton deplete
zooplankton stocks altering food web and
ecosystem function contributed
significantly to collapse of black and
as off sea fisheries in nineteen
nineties with massive economic and
social impact now threaten similar
impact in Caspian Sea north pacific
seastar asterias amaranthus native to
northern pacific introduced to southern
Australia impacts reproduces in large
numbers region play proportions rapidly
invaded environments feeds on shellfish
including commercially valuable scallop
oyster and clam species zebra mussel
dress sena polymorpha native to eastern
europe Black Sea introduced to western
and northern Europe including islands
and Baltic Sea eastern half of North
America impacts fouls all available hard
surfaces in mass numbers displaces
native aquatic life alters habitat
ecosystem and food web causes severe
fouling problems on infrastructure and
vessels blocks water intake pipes
sluices and irrigation ditches economic
costs to USA alone around 750 million
u.s. dollars to 1 billion US dollars
between 1989 and 2000
should help you Doria peanut feeder
native to northern Asia introduced to
southern Australia New Zealand west
coast of USA Europe and Argentina
impacts grows and spreads rapidly both
vegetatively and through dispersal of
sports displaces native algae and marine
life alters habitat ecosystem and food
web may affect commercial shellfish
stocks through space competition and
alteration of habitat european green
crap cosiness minus native to European
atlantic coast introduced to southern
Australia South Africa USA and Japan
impacts highly adaptable and invasive
resistant to predation do two hardshell
competes with and displaces native crabs
and becomes a dominant species invaded
areas consumes and depletes a wide range
of prey species alters intertidal rocky
shore ecosystem round goby near gobis
melon askis native to black as of and
Caspian Seas introduced to baltic sea
and North America impacts highly
adaptable and invasive increases in
numbers and spreads quickly competes for
food and habitat with native fishes
including commercially important species
and praise on the eggs and young spawns
multiple times per season and survives
in poor water quality
toxic algae red brown green tides native
to various species with broad ranges
introduced to several species have been
transferred to new areas in ships
ballast water impacts may form harmful
algal blooms depending on the species
can cause massive kills and marine life
through oxygen depletion release of
toxins and the mucus control beaches and
impact on tourism and Recreation some
species may contaminate filter-feeding
shellfish and cause fisheries to be
closed consumption of contaminated
shellfish by humans may cause severe
illness and death mitten crap i owe care
census native to northern Asia
introduced to Western Europe Baltic Sea
and west coast north america impacts
undergoes mass migrations for
Reproductive purposes burrows into
riverbanks and dykes causing erosion and
siltation praise on native fish and
invertebrate species causing local
extinctions join population outbreaks
interferes with fishing activities
producer and water flea copegus pen
going native to Black and Caspian Seas
introduced to baltic sea impacts
reproduces to form very large
populations that dominate the
zooplankton community and clock fishing
nets and trolls with associated economic
impacts
cholera video caller I various strains
native to various strains with broad
ranges introduced to South America Gulf
of Mexico and other areas impacts some
cholera epidemics appear to be directly
associated with ballast water
one example is an epidemic that began
simultaneously at three separate ports
in peru in 1991 sweeping across south
america affecting more than a million
people and killing more than 10,000 by
1994 this strain had previously been
reported only in bangladesh when Fisher
is coastal industry and other commercial
activities and resources are disrupted
by the invading species it is estimated
that the cost of all invasive species is
in the vicinity of 183 billion US
dollars per year in the USA alone when
toxic organisms diseases and pathogens
introduced through ballast water causing
illness and even death humans