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|Delivery||Online & Correspondence|
GET STARTED ON YOUR MARINE BIOLOGY CAREER!
Start a business or get a job
600 hour course
Broad based, solid foundation in Marine Science & Commerce
For people working or wishing to work in marine conservation, eco tourism, research or commerce
This course covers topics such as marine studies I & II, Earth Science and allows the student to investigate areas of special interest to them via research projects.
|Core Modules||These modules provide foundation knowledge for the Certificate in Marine Studies.|
|Marine Studies I BEN103|
|Earth Science BEN204|
|Marine Studies II BEN203|
|Elective Modules||In addition to the core modules, students study any 3 of the following 8 modules.|
|Aquarium Management BEN105|
|Research Project I BGN102|
|Workshop I BGN103|
|Mariculture - Marine Aquaculture BAG220|
|Research Project II BGN201|
|Workshop II BGN203|
|Ecotourism Tour Guide Course BTR301|
|Environmental Assessment BEN301|
Note that each module in the Certificate in Marine Studies is a short course in its own right, and may be studied separately.
What's covered by the Core Modules?
MARINE STUDIES I
This module has 9 lessons as follows:
MARINE STUDIES II
There are 10 lessons as follows:
There are 9 lessons as follows:
Complement Your Studies and Increase Employability
We suggest that our Marine Studies students who are looking for employment gain additional qualifications such as an Open Water Divers Licence and a Coxswains (or similar boating) Licence, as they willl then be better positioned to gain employment in this competetive field.
Marine Environments Need Management
A marine ecosystem is based on the same principles that apply to any ecosystem. Water quality is as important as air quality as this is the abiotic component by which most marine organisms (apart from marine mammals) obtain oxygen. In some respects a marine environment is more fragile because of this very factor. However, large marine systems have the ability to dilute impurities such as toxic chemicals or suspended solids. The smaller the marine system (i.e. tidal pools or estuaries), the more susceptible it is to disturbance.
Marine ecosystems are often complex and dynamic environments in which many organisms are involved in many intricate and often totally unobvious relationships. It is due to this complex web and fragility that marine ecosystems can be subject to sudden and dramatic consequences as a result of changing environmental conditions. A prime example of this is the collapse of certain fishing industries due to a lack of efficient control over the fishing quota and practices. Overfishing of a certain species can be expected to produce this result, however there are instances of seemingly totally unrelated species being affected by the exploitation of another species.
Fishing communities who are reliant on the productivity of these environments can also be adversely affected by the depletion of stocks. The economies of countries such as Peru and Newfoundland have been reliant on the income generated from their coastal fisheries. Overexploitation of these systems in response to the growing demand for fish stocks, places huge pressures on the sustainability of these systems to endure such demands.
Another example (and putting coral reefs at very high risk of being destroyed in the 21st Century) is the consistent rise of global warming and its known effects on coral bleaching. Over the past one hundred years, the temperature of sea water in many tropical areas has been rising. Rising water temperatures block the photosynthetic reaction that converts carbon dioxide into sugar (a process carried out by the zooxanthellae – the microscopic algae that reside within the corals). The result is a build-up of products that poison the zooxanthellae. To save itself, the coral expels the zooxanthellae and some of its own tissue, leaving the coral a bleached white. The bleached coral can recover, but only if cooler water temperatures return and the algae are able to grow again. This is an incredibly slow process however, and the rate of destruction of the reefs is far quicker than the recovery rate.
The limitations that marine environments present to humans have made the progression of knowledge and insight through research a slow process. Our knowledge of marine ecology is still quite limited; there are places within the ocean that have never been visited by humans due to our own technical limitations. However, there has been a marked increase in research and discoveries in the last century due to technological advancement. It is, apart from space, the last frontier.
Physical Characteristics of Water
The surface temperature of the oceans is constantly variable. Water in the tropical oceans may have a temperature of 28 degrees Celsius, or higher at the height of summer. In the Polar Regions, sea temperatures of -2 degrees Celsius are common. Unlike freshwater that freezes at 0 degrees Celsius, seawater freezes at an even lower temperature, dependent upon the salt content of the water.
The average salinity of sea water is approximately 3.5%, or 35 parts per thousand. In the open ocean, away from major rivers, melting ice and areas such as the bottom of the Red Sea, salinities will be higher than coastal areas (and especially so compared to river mouths).
Salinity is tested by measuring the electrical conductivity of a sample at known temperatures. Oceanographers often use instruments known as CTD's (Conductivity/Temperature/Depth probes). These instruments can obtain accurate profiles or continuous records of temperatures and salinity through the column of water from the surface to the sea bottom.
There are a few reasons for variations in the salinity of sea water.
The density at the sea surface is normally 1,025 grams per cubic centimetre. The lighter water floats on the denser water, or, density increases with depth.
It is normal for cold water to be denser than warm water. In hot water, the molecules are bouncing off each other more vigorously, and need more space than in cold water - the result is that you have fewer molecules per unit volume in something hot than in something cold. In the sea, temperature decreases with depth (due to high pressures and the lack of sun penetration).
Fresh water reaches its maximum density at 4 degrees Celsius, but sea water is most dense just before it reaches its freezing point at -2 degrees Celsius.
The reason for measuring the temperature of the sea is because most life forms are physiologically adapted to living within specific temperature ranges. The measuring of salinity is less clear, but is related to the density of seawater being dependent upon salinity levels, temperature and pressure.
The measure of density distribution is important to the oceanographer. It is from density distribution that direction and speed of horizontal fluid movement and the position of the atmospheric pressure required by the meteorologists can be determined. They can then monitor and predict the movement of atmospheric pressure and fronts. Except surface water where the temperature and salinity can vary within a wide range, most oceans have a close relationship between temperature and salinity.
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