Predation- Is a biological interaction that takes place between one species that is decomposing and another plant uses the previous' plants resources to grow. This is a non symbolic relationship. An example of this is a wasp looking for a Douglas Fir caterpillar. Another example is the mushroom growing on dead wood. I believe the picture below is some kind of Mushroom:
Facilitation-the tree provides the moss with water and the mychorhizal fungus tree provides glucose. Nursing tree- is a place where lichens can grow as well as moss and other algae and fungus.
Pollination in another example of predation- as well as when aunts pollinate.
Disturbance- Douglas tree that fell and cleared an area, this now becomes an opening in the forest. This opening leads to pioneer species. The burnt out tree that we saw was another example of a disturbance from a fire.
competition- everything is competing for light and water!
An example of this is a Douglas fir that grows very quickly but cant grow in shade. While an example of a pioneering species is the Douglas fir, while a successional species is Hemlock which reproduces in a mature forest, and will eventually take over if there is enough time.
The picture below is a trillium: Trilliums have 3 white petals and grows in cool moist mixed woods. They flower in early spring and perennial.
The seeds of trilliums are spread by aunts!
Sea Anemone that is part of the water-dwelling predatory animals of the order of Actiniaria. One interesting fact I learned in class is the ability for Anemones to identify strange anemones if they are set within there specific communities. The Anemones then proceed to sting the foreigner to death. Although they have no nervous system they still can identify intruders!! I find that fascinating!
This is a Blood Sea Star Fish in the Echinoderms Family. They have closely set equal blue spins and are found at low tide zone to the water. It can absorb nutrients through its skin.
Purple Sea Urchin- Family: Echinoderms. They are usually around 4" wide and 1" high. They are a oval shape with spines, and a vivid purple color. I found these Urchins in the low tide zone, they were seemed to often be living in rounded depressions in the rocks- they actually slowly erode these rocks with their teeth and spines! The picture below is what is left behind from a sea urchin who died.
Chiton: Are apart of the Polyplacophores family and have a dorsal shell that is composed of eight seperate shell plates. The plates overlap and with these plates they have good protection especially from direct impacts from above. Chiton can also slowly curl up into a ball when it is dislodged from a surface.
No comments:
Post a Comment