Have you noticed reports in the media about climate change and loss of species diversity?Have you ever encountered a special location which has a unique set of organisms that one doesn’t see anywhere else?Have you ever wondered why within a very short distance, the types of animal and plant communities can change entirely, whereas in other areas, one can go for hundred of kilometers without a change of species composition?Have you ever tried to make a plant grow where you want it to grow but find out it keeps dieing?We are slowly becoming aware that in order to preserve a species , we have to be sure the ecosystem of which it is a part is preserved intact..This project will enable students to contribute to a project which may help to shed some light on the questions above. We hope it becomes something that anyone can do long after they get the introduction through this exercise.
|2. Wind Speed and Direction, are very significant factors in this kind of Coastal Ecosystem. Linked from the wind page, you will find a page on correlations of barometric pressure and wind speed. Use the graphs that have been added to the correlations page and decide whether you can see a correlation between season of the year and the wind direction. Offer an explanation for the variation that you might find..Looking at the barometer record currently for Race Rocks, and the linked page with correlations, provide with quantified references, an argument for or against the idea that the barometer is a useful predictive device for the weather. Be sure to look for influence of other variables as well.|
|3, Barometric Pressure and the Effect on Organisms: There is some question as to whether organisms can sense changing barometric pressure. Click on this file about barometric pressure and evaluate the evidence that scientists use to show that some organisms do have the ability to detect changing barometric pressures. What is the adaptive advantage of this ability? You may, with careful observation of animal behavior, come up with some evidence either supporting or rejecting this ability. On the racerocks.com weather station, track the weather at Race Rocks for a week. Within that time note the behaviour of animals when the barometer graph is peaking and then dropping . Can you establish a correlation between activity and impending storms?
Hint: to quantify, select a number of times from the graph when the wind is at it’s peak, and the barometer is at a low. Is there always a time lag, if so how much?.
4. Lightning as an Abiotic Factor:
Some of the factors are much more important than others. For example: Lightning is of minor importance most of the time at Race Rocks, or for that matter, anywhere in the local Strait of Juan de Fuca area, compared to wind speed and direction.
Use the link on the lightning page to find out where lightning is presently occurring in North America. Calculate the frequency of lightning strikes and the area which is affected for any one viewing session. Find out from the reference about the abiotic effects of Lightning, about one of the important effects of Lightning related to Nutrient Cycles . There are obviously other abiotic effects of lightning. List two that you can come up with here.
If you can take a screen shot in the summer of this map showing lightning in the Strait of Juan de Fuca, enter it as an observation on the OceanQuest GIS sighting record.5. Change Through Time:
The records of Salinity and Temperature have been collected by the lightkeepers at Race Rocks up to 1977 and by the Marine Protected Area Guardians from that time to the present. These records provide an valuable insight into how factors can remain stable or change over time.
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