There are specific problems associated with the decrease in the number of bass in the Tri-lakes. There have been many records and data telling us that the population of the fish has been decreasing since 1988 to current day. These three main limiting factors are considered overfishing, the interactions among the bass and the organisms that live in the lake, and an increase in temperature that may be too hot for some organisms to handle. The interaction between the yellow perch and the bass has been competition, the bass population began to increase while the yellow perch population began to decrease. This might have been because they were fighting each other, or fighting for the food source. The next interaction in the lake is between the Daphnia and the bass population. This is predator-prey because the Bass eat the Daphnia because the Daphnia is the food source for the bass. It is important for us to use other people from our groups data so that we can really figure out the main factors causing the bass population to decrease. Without my groups data I would have only been able to find evidence of overfishing, but with the data I received from the others I was able to find the bridge to the temperature issue. …show more content…
Overfishing is a big problem because each year, starting in 1988, about 3,800 fish were caught, but after that, the amount of fish began to fluctuate.. The second main problem is the temperature change in the lake, the water is becoming too warm in which some organisms in the lake may not be able to handle. An organism like Daphnia thrive at a temperature 20°C, but recently the temperature has been 21°to 24°C, this is too warm for the Daphnia which could be why many organisms in the lake are having a hard time
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Students started off with a population of ten Skittlefish (skittles) on an orange reef (construction paper). The skittles had varying colors, and the adaptive trait being examined was the ability to blend in with the reef so the predators would not find them. The hypothesis that was thought up was that individuals’ survival was based on their location and coloring. The first year began with two of each color, and 5 Skittlefish were eaten that “year”. The ones eaten were two green, two purple, and one red.
The algae washes up on shores and destroy the beautiful of the beaches. This also has a side effect on the economy. A nuclear power plant had to be shut down from the algae problem which has cost them hundreds of thousands of dollars per day.
Daphnia are very abundant organisms in freshwater lakes. They tend to live in the upper algae rich portion of the water, feeding on phytoplankton, bacteria and decaying organic matter. Daphnia and bosmina both serve an essential role in he food chain in most lakes, serving as a resource for numerous predators. Trout tend to feed on small crustaceans like daphnia and dosmina. Trout are visual predators and therefore feed on the larger daphnia thus providing bosmina a competitive
The Asian Carp Response in the Midwest states: “The presence of Asian carp in the Great Lakes could cause declines in abundances of native fish species. Asian carp will compete with native fish for food—native fish like cisco's, bloaters, and yellow perch, which in turn are fed upon by predator species including lake trout and walleye” (np). Another consequence is the poor quality of water that carp cause when they enter into new waters. They are known to be responsible for the unpredictable and disastrous results in habitats. As stated by Hansen, M. “Asian carp are like zebra mussels, which also prey on the base of aquatic food webs, and can thereby reorganize nutrient and energy flow with unpredictable consequences on native species” (np).
Identify the problem: In a vast array of Michigan lakes, a crusty brown algae is spoiling the waters it comes into contact with. (Some lakes include Torch Lake, Elk Lake, and Lake Charlevoix). Pinpoint Causes of the Problem: From an undetermined source, groundwater nutrients nutrients like nitrogen and phosphorus are penetrating the lake at abnormal levels. However, a few leads have been suspected. These culprits include invasive mussels, heavy ice cover the last two years, residential and agricultural runoff, and outdated septic systems.
Imagine a world without any fish in our ocean, nothing for the next generation no ahis mahi mahis ,marlins and many more fish we won’t have if over fish our oceans. I feel that overfishing in Hawaii is a major problem for 3 reasons such as people are taking fish that are under the size limit on the fish, another example is people are taking the fish that are the big breeders and they don’t give them a chance to repopulate and for the last example is people are taking more than they need and it could be a waste because it just sits in the freezer. The first reason I think overfishing is a major problem in Hawaii is because people are taking fish that are small and under the size limit that they should be taking.
Daelyn Sagert January 30, 2018 Comp. 2 4th hour Compare and Contrast Essay Freshwater Fishing vs. Sea Fishing Saltwater fishing and freshwater fishing both have their own unique, and sometimes annoying qualities. Neither of them are really better than the other one that can be proven as such. Everyone has their own opinion over the “which is better” topic, and to just bluntly answer that question come, neither of them are better than the other (K, Jay n.p.). The biggest dependency of which one you like more is where you live.
When we are children we grow up watching movies that transport us to another world. Take Disney movies, typically Disney movies transport you to a faraway land with interesting individuals that tend to on adventures; take Disney’s motion animated picture The Little Mermaid, within this movie we are given the opportunity to see how living underwater is “better”. That if you living on land there are many problems you generally would not find under the sea. Although this is an animated motion picture utilized to promote happiness in younger generations something interesting to note is that not everything under the water is better.
It is asserted that this increase in the number of salmon is due to a bottom-up effect, which increases resources salmon need, benefitting the species and allowing a population increase. An increase in water temperature has been shown to increase zooplankton populations, and this gives salmon fry a higher rate of survival. As temperatures have increased, salmon also develop faster and stay sheltered longer, evading predators more. When the water is at a cooler temperature, there are less zooplankton, slower fry development, and an increased vulnerability to predators. This observed increase in pink salmon populations has lead this species to have a top-down effect on other salmon species.
The largemouth bass have the ability to hide from their prey and provide protection against their predators through the process of abundant vegetation. Their surroundings is usually made up of clears waters so that they can use their vision to identify their prey. The range size in most environments is usually no greater than three meters. (Hannon, 1996; Iguchi and Matsuura, 2004) The largemouth bass is dioeciously, meaning they have separate sexes in reproduction, male and female.
If a lake is cut from the ocean and has no large fish as predators (only dragonflies), then the sticklebacks will have a better chance at surviving and reproducing because the sticklebacks will be better adapted to the environment (presence/absence of a pelvic bone) and have little to no predators. The hypothesis was supported. Before the experiment started, background knowledge was collected to better the knowledge of the lakes. Bear Paw Lake is an enclosed lake, meaning no predators could get into the lake.
1. 90-100 million tons are killed and wiped off the planet each year. Consisting of some of the most beautiful creatures on the planet. Fish are a primary food source to 3.5 billion people worldwide and the depletion of the species is leaving millions of people hungry. Over fishing is a huge problem that needs to be stopped.
According to world wildlife organisation, overfishing occurs when more fish are caught than the population can replace through natural reproduction. Gathering as many fish as possible may seem like a profitable practice, but overfishing has serious consequences. The results may not only affect the balance of life in the oceans, but also the social and economic well-being of the coastal communities who depend on fish for their way of life. According to the research world wildlife organisation, 1.6% of the world’s oceans have been declared as marine protected areas (MPAS), and 90% of existing MPAS are open to fishing.
This image is a picture of a man fishing in Micronesia and fits into the category of the 3 pronged map, specifically the land use. The phrase I use for this picture is, ”all we’ve got.” What this phrase means is that in Micronesia they do not enough space to farm and grow plants. Micronesia is only 702 sq km and have 0 sq km of irrigated land! Farming and browning crops is something that these islands can’t do, but what they can do is fish.