Adventure Ausrama Blog

Conservation: Overfishing is just as toxic as pollution. G+ We are already running out of food.  If carbon dioxide doesn't kill us diminishing fish stocks will.  Soon, the humble fish and chips will cost too much for most people.  When the crunch comes the decline will be sudden over a period of five years.  It will not be possible to increase fish stocks in the medium term and some fish species will disappear forever. People must eat and in Asia in particular daily fishing is part of everyday life.  There will be little chance of a freeze on fishing.  It they are allowed to keep fishing and Western countries stop they will export to the lucrative fishing markets and nothing will change. Manufacturers like Birds Eye are alreading putting "rubbish" fish in their food products rather than the old reliable species.  When you get a fishy taste that is the second rate fish formally called baitfish.  It is so bad that major predators have fallen by ...

Coral reefs may look okay but on closer examination they may be dying. Overfishing, particularly in the Indian Ocean, causes eight steps that lead to reef collapse. Each step is a stage toward the end of a reef. Keeping fish numbers up is important. When the level falls below 1000 kilograms of fish per hectare seaweed growth increases as well as urchin activity. This is a major indication of a problem. If fish density falls below 300 kilograms a crisis is reached. Until now, coral cover has been used as a measure of coral health. This research shows that coral cover is the last threshold: the reef is heading toward ecosystem collapse. It is during the first three stages that constructive change will save a reef. Fishing should be regulated. If a reef is in the final five stages, it is near impossible to save it. Only marine reserves have really healthy coral reefs because fishing is restricted. Unmonitored reefs fare the worst. A management system for each reef needs to be ...

Though it is not unusual for alien species to invade Australia, it is unusual for animals native to Australia to become pests in other countries. The Australian spotted jellyfish, phyllorhiza punctata , is stinging bathers on Spanish beaches. The jellyfish is not dangerous to humans, but it causes a painful sting. Though called the Australian spotted jellyfish it is also found in North Carolina and the Gulf of Mexico. Seven beaches were closed in Spain to protect people: Cala Cerrada, La Zenia, Cala Capitan, Punta Prima, La Mosca and Playa Flamenca. There are fears that the jellyfish will arrive on British beaches this summer. Climate change, pollution and overfishing are being blamed. http://www.adventure--australia.blogspot.com/ http://www.tysaustralia.blogspot.com/ http://www.feeds.feedburner.com/AdventureAustralia http://www.technorati.com/blogs/ http://adventure--australia.blogspot.com . . . . . . . . . . . . . . . . . . Climate