Archive for the ‘Pond’ Category

To Much Algae


Pentucket Pond


As I was walking around the pond yesterday I saw a frog leap in to the water. As the ripples from the frogs leap disturbed the surface of the water I saw a few fish. Seeing the fish was weird because previously I thought this algae infested body of water was able to sustain no life except the insects which floated on its surface along with the green and brown algae. Seeing this got me to wondering what if their was no algae on the surface? With that question on my mind I went off to find out what was the purpose of algae. I found that the purpose of algae was to oxygenate the pond. If the algae were for some reason to disappear I found that there would be no other plant to oxygenate the water which would cause the fish living in the water to die. I also thought what if the insects floating on the surface were to some reason disappear and I found that the fish would lose their food source and begin to die which would cause the algae to increase and over run the pond and then die. When algae dies it takes all of the oxygen with it which would kill the pond and make it uninhabitable. From my research I found that it is difficult to tell if something starts to die if it will die off completely or it is just being reduced to maintain homeostasis.    

                                                                                                                                Jeffrey H.    



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pond walk

On Thursday May 6th I went on a nature walk around a small pond. When on this walk I encountered many types of plant and animal life. For animals there were frogs and turtles. Some of the plants there were are milkweed, grass and dandelions. There were multiple frogs of various sizes. It was interesting to see them interact in there natural environment. The snapping turtle just kind of sat in the middle of the pond on a sandbar. One example of a plant there was was the skunk cabbage. Skunk Cabbage is an invasive species and when it reproduces it reproduces quickly. We also threw a walk into the pond and saw fish move around. There was bubbles floating up from the bottom of the pond and we knew that meant there were fish.

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Leopard Frog

On thursday as we were walking on a nature walk around the pond we saw some pretty interesting things.  One of the main organisms that we saw were the frogs.  We saw alot of frogs.  Their were probably at least a couple hundred frogs in the one pond outside the highschool.  The frogs were in all different sises.  The bull frog we saw was about 3 inches long, and the other normal frogs were about 2 inches long.  The normal frogs were more interesting because they did not move when you got close to them.  The bull frog moved when we were not even five feet from it.  Some of the frogs also seem like they were eating the bugs in the water.  This is what frogs eat.  Overall my walk with the frogs was a very interesting and fun experience.

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How do organisms affect one another’s survival?

Organisms can be separated into two main groups according to what they eat, autotrophs and heterotrophs.  An autotroph is a producer that makes its own food.  Heterotrophs are consumers and can be either carnivores (eat animals) or omnivores (eat both animals  & plants).

On the class trip outside I observed many things that support these facts about the food chain and ecology.  For example birds eating insects.  I also observed fish and their nests around the pond.  In addition, there were many different plants that help animals to survive by providing food for them,  the plants also help filter the water and provide oxygen.

An example of this in nature is that worms and other insects are eaten by birds and other animals to provide nutrients for the animal that eats them.  Also another example of this in nature is that plants provide energy for herbivores and omnivores.

If all of the plants died then so would all of the herbivores and the animals that feed on the  herbivores.  It would eventually lead to an entire disaster because all organisms would starve and die.

If one organism dies it does not have as much of an impact on the ecosystem than if an entire species because there would still bee food/energy to provide for all of the other organisms.

It is difficult to make accurate predictions about changes in communities of organisms.  This is because you never know if the organisms could make adaptations and still survive.  We would never really know until the situation actually happens.

Amanda C.

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Several organisms were just outside of Pentucket by the pond. Turtles, fish, and a large amount of insects; some of which I’ve never seen before. Several insects used plants to survive, by hiding in or on them. There was a turtle in the middle of the pond on a large mud pile. I thought it was a rock when I first saw it but everyone else said they saw it’s head move. When I leaned a little bit closer, I saw it’s eyes. It was frozen, trying to escape any danger that could come from us being there. The plants all help the turtle survive; giving it something to consume for energy. The fish, I would expect, eat the insects and algae that is in the pond. If the plants were to die in the pond, I would expect the turtle to die. If the plants and the fish were to die, the turtle would die and there would be a lot more insects around the pond, since there wouldn’t be any consumers of the insects. It’s difficult to make predictions about changes of the community of organisms because they could either die out, or adapt to their environment. But it is impossible to know unless it were to happen. Scientists could probably analyze the organisms around the pond and make a scientific prediction on if the turtle or whichever organisms are close to evolving or adapting.


Devin McFadden – Class A

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     Walking outside for a short 10-15 minutes was enough time for me to realize how much life is hiding out there. In the pond, there were many fish, frogs, bugs, et cetera, and I was surprised to even see a turtle. The amount of life found within such a small pond was exciting to of witnessed. I had no idea there was an entire world of living creatures just outside the school building. The producers being the many plants found around the pond, and the consumers being the many animals found within, I was very taken in by the ecosystem and happy to see so much life in what I thought was an empty pond.

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Nature Walk at PRHS

During our nature walk, I observed many different things.  One thing, that I observed for the very first time, was that there are actually fish in the pond in front of the high school.  I was amazed that fish could actually survive in that water.  Another thing that I had observed was that there was a lot of other organisms in the pond, from algae to turtles.  The algae was throughout the pond in various places and as the “fountain water” hit the pond water, the algae cleared.  Most of the turtles that we found were in the muddy, shallow parts of the pond.  There were also many different types of plants surrounding the pond.  The plants included skunk cabbage (eewww), and cat tails.  The skunk cabbage was stinky when picked.  I think that it smelled bad because when you pick it, you crack and expose the stem which expels a displeasing odor.  (But, I’m not sure.)  The cat tails looked like cotton on the top.  I made many observations during the nature walk.

All of these organisms interact with each other.  The algae in the water directly relates to the organisms living in it.  if there is too much algae in the water, the organisms, such as fish, will die.  Too much algae will cause the fish to have difficulty getting oxygen through their gills.  The plants around the pond also interact with their environment.  If their environment suddenly changed, the plants would die.  For example, if there was a sudden cold front or drought, the plants would die.  The organisms and their environment have to cooperate in an ecosystem.  All organisms and plants in an ecosystem interact and must work as a team in order to survive.

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