Wednesday, December 1, 2010
Grasslands, by Maggie and Becky
At first glance,
looks pretty desolate. There’s just grass with a few areas of trees. But when you venture into the park you start to notice that this blank canvas is actually a masterpiece in disguise. Within this protected park, there are 3 very distinct biomes: Pond, Nosehill Park Forest, and Grassland. The last one was studied by Becky T. and Maggie H. of Dr. Pike’s and Ms. ’s Biology 20 period 4 class. Wilson
We were going on this field trip in order to answer a research question. Our group’s research question is “what are the symbiotic relationships seen in
?” Nosehill Park
Grasslands are characterized as areas dominated by grasses rather than large shrubs or trees. The determination of which species of grass grows better in a particular grassland ecosystem, the factors greatly include temperature, precipitation, and soil conditions.
What you expect to be a field of grass is really a composition of various species of not only grasses but wild thistle and other wild grasses and flowers (as well as a berried plant shown on the right). There are numerous examples of symbiotic relationships.
What is a symbiotic relationship?
A symbiotic relationship (or symbiosis) can be defined as an interaction between different species.
These interactions can further be classified as mutualism, commensalism, or parasitism.
First off, mutualism is any relationship between individuals of different species where both individuals benefit. An example of mutualism in Nosehill is between the pocket gophers and plants. These organisms benefit from each other because when gophers build their tunnels underground, it allows more oxygen and other nutrients to enter the soil, making the soil healthier and more fitting for plants to thrive.
Secondly, commensalism, which describes a relationship between two organisms where one benefits and the other, is not harmed nor does it benefit from this interaction. Commensalism in Nosehill can be found between the thistle and spiders. This is an example of commensalism because the spider benefits because it’s a place for the spider to capture prey while the thistle neither benefits nor harmed.Lastly, parasitism, which is a relationship between two organisms in which one organism benefits while the other, is harmed. In