The depletion of fishing stocks, caused by extensive overfishing, negatively effects marine ecosystems and threatens the livelihood of many South Africans who depend on the fishing industry. Overfishing is the practice of removing more fish from an ecosystem than can be replenish through natural reproduction. Overfishing – a rising threat to our planet (Basson, 2011) emphasises that fish stocks, both locally and globally, are seriously depleted and it is the consumers responsibility to support seafood
Matthew Flinders and Captain James Cook are the reason we know the great barrier reef exists. Captain James Cook was the first person to record the existence of a reef as he sailed up the eastern coast. He first noticed shoals in the area of the Great Keppel Island. Matthew Flinders was an English navigator and cartographer who was the first to explore the entire Australian coastline and named the Extensive Barrier Reef, today known as The Great Barrier Reef. The name is unique because it describes
Millions of people around the world depend on fish as a living. Fisheries provide a source of income, recreation, food and employment throught the world, therefore it is very important that everyone who is involved in fishing helps to manage and conserve these World fisheries. To be able to manage and conserve these fisheries more than 170 members of the FOOD AND AGRICULTURE ORGANISATION OF THE UNITED NATIONS (FAO) in 1995 have adopted a Code of Conduct for responsible fisheries which is aimed for
b. The graph from Table 1 is showing an exponential type of graph because due to the quantity in the population increasing at a fixed percentage per unit for time at 2% per year. Exponential graphs start off slowly however; it leads to the quantity to double each time. One can see that in the exponential growth graph the rate levels off although, the population continues to grow. c. One possible cause of the exponential growth trend graphed in part a. could be the increase in both technology and
Public goods A public good is a good that individuals can use without reducing its availability to others and that is openly available to everyone. An example are the dikes in the Netherlands. Once a dike has been created, no one can be excluded from enjoying its benefits as it protects everyone and no one can reduce its availability to others. Market failure Is when the allocation of goods and services is suboptimal which means that the quantity provided does not meet the quantity that is in demand
thinning of the ozone layer, changes of annual precipitation, and an overall increase in variability and intensity of seasons, climate and weather patterns. The southern African region is undergoing the same climate changes. These changes will have an effect on the marine ecosystem and its marine fish stocks, however, only probable scenarios and predictions have been presented
thinning of the ozone layer, changes of annual precipitation, and an overall increase in variability and intensity of seasons, climate and weather patterns. The southern African region is undergoing the same climate changes. These changes will have an effect on the marine ecosystem and its marine fish stocks, however, only probable scenarios and predictions have been presented
What could possibly be wrong with taking your child to an aquarium? It seems like an innocent enough pleasure. Most children love watching exotic fish swimming behind glass, seahorses, sharks, rays, jellyfish, and turtles. A visit to the aquarium is a mixture of entertainment and education, and seems much less morally dubious than going to a zoo to gorillas, and probably much better than playing point-and-shoot video games. True, recent publicity about the US theme park chain SeaWorld and the treatment
Sea urchin Introduction: The name "urchin" is an old word for hedgehog, which sea urchins resemble. Sea urchins are small and spiny animals that are members of the phylum Echinodermata, which also includes sea stars, sea cucumbers, brittle stars, and crinoids. There are nearly 200 different species of identified sea urchin with various shapes, sizes and living in different environments. As some sea urchin living 200 years or more, they are considered the longest living animals on earth. Sea urchins
The rapid acceleration in population growth subsequently had a domino effect on the environment. This increase in number leads to the gradual destruction of habitats, and in places where species are not capable of adapting elsewhere, human intervention leads to the mass extinction of endemic species. When areas that are abundant