Ballast water discharge and the environment | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-05-15

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Ballast_water_discharge_and_the_environment


00:01:19 1 Problematic species
00:02:36 2 Ballast water issues by country
00:02:48 2.1 New Zealand
00:03:15 2.2 Peru
00:03:40 2.3 United States
00:05:38 2.4 Singapore
00:06:15 3 IMO convention
00:08:20 4 See also



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SUMMARY
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Ballast water discharges by ships can have a negative impact on the marine environment. The discharge of ballast water and sediments by ships is governed globally under the Ballast Water Management Convention, since its entry into force in September 2017. It is also controlled through national regulations, which may be separate from the Convention, such as in the United States.
Cruise ships, large tankers, and bulk cargo carriers use a huge amount of ballast water, which is often taken on in the coastal waters in one region after ships discharge wastewater or unload cargo, and discharged at the next port of call, wherever more cargo is loaded. Ballast water discharge typically contains a variety of biological materials, including plants, animals, viruses, and bacteria. These materials often include non-native, nuisance, exotic species that can cause extensive ecological and economic damage to aquatic ecosystems, along with serious human health issues including death.