AP Environmental Science: Chapter 5 1. Explain how southern sea otters act as a keystone species in kelp beds. The otters help to keep sea urchins and other kelp-eating species from depleting highly productive and rapidly growing kelp forests, which provide habitats for a number of species in offshore coastal waters. Without southern sea otters, sea urchins would probably destroy the kelp forests and much of the rich biodiversity associated with them.
In the Faroe Islands, there is an old saying which states: “Eat whale meat and blubber, then you will grow tall and strong”. A pro of whaling is that these mammals contain many valuable nutrients. For example, the Pilot whale is not only high in iron, Vitamins A and B, and carnitine, it also contains 25% protein. Doctors have even recommended eating Pilot whale meat to fight against cardiovascular disease due to its unsaturated fatty acids (Source 2). Countries who commonly practice whaling include Iceland and Norway, which like the Faroe Islands, have climates where vitamins from both the sun and vegetables are in short supply (Source 7).
I believe that the more water you can cover the more fish you can catch. Lures are made to attract fish. Lures can be built to make noise, create reflections or just imitate the movements of a bass’s natural prey. There are also different types of lures. These are topwater, mid- depth and deep water lures.
On the other hand, the importance of Daphnia in the food chain is significant as Daphnia is preyed upon by several aquatic organisms such as tadpoles, salamanders, aquatic insects, and many of small fish species. Ultimately, and by the end of the chain, food fish for human consumption could be affected as a result of the negative changes in Daphnia
The first reason why I think should not be in captivity is of what happens in their tank. The first piece of evidence from the PETA practical “Aquariums and Marine Parks” is that since the tanks for the orcas are usually small for them, they get insane because of the echolocation they use. This makes me think that since their fin sometimes curves, that they would get injured while swimming. In addition, this might make the whale die faster than what they are supposed to live to. Other people might say it might non’t affect it
Commercial fishing is defined as the harvesting of wild fish and other seafood for commercial profit, and provides a large quantity of food to many people around the world. In comparison to commercial fishing, aquaculture, also known as aquafarming, is the farming of aquatic organisms and populating them in controlled environments. The aquaculture industry in the United States is primarily dominated by freshwater catfish farming producing more than 1 billion dollars. Although aquaculture seems beneficial, it has many negative impacts on the environment that are threatening the marine ecosystem. Marine aquaculture is the farming of seafood species that are indigenous to the ocean.
We can save them by going Scuba diving. We can also save Loggerhead Turtles from reckless drivers by Scuba diving because of the debris. My final way that we can save Loggerhead Turtles is by making them endangered. That is my ways of how to save Loggerhead
Feeding techniques and Social Learning: Bubble net feeding has been identified as tool-using behavior and a possible sign of culture. The process of bubble-net feeding is like a game of football, where members specialize in an specific factor of the hunting process. From the evolutionary perspective, humpback whales could have develop cultural transmission in order to communicate about the location of the their prey. Their prey, schools of fish, are spread in aggregated manners throughout the ocean.
The Georgia Aquarium has asked for permission to bring 18 more belugas into the U.S. The whales were captured off the coast of Russia.” I am starting to wonder, why do they want to bring more whales and capture more? They already have a bunch!
Most of the time, these winds drive a lot of food sources in the water so that the crappies will feed there. To conclude, the best spawn area is one which shallow and has the windward shore. Keep in mind that it is not the spot where you will catch the prey. It is only the initiation of your fishing location. Based on crappie spawning nature, they will use the passage (drop offs) to find natural covers such as brush piles, stumps, deep channels, etc.
In today 's modern world as we expand, we are taking away habitats from animals and other diverse ecosystems. By doing this we are causes animals to become endangered and extinct. One animal that is harmed by the expansion of humans is the manatee. The manatee lives in warm shallow water next the the shore because that is where the animals have access to food and other resources.
Pollutants from factories, cars, boats, and litter are all the things humans use to pollute the bay. The bay contains a high amount of phosphorus and nitrogen. Phosphorus and nitrogen are needed for organisms and plants to be able to survive. However, an excess amount of phosphorus and nitrogen degrade the quality of Chesapeake bays water. Phosphorus and nitrogen feed algae blooms that block sunlight to the underwater bay grass and leaving a low supply of oxygen in the water.
The overpopulation of Pollock is creating an environment with no sustainable food source for the sea lions. Commercial fishing would also provide an opportunity to fish in a way that is co-beneficial to the environment, rather than carelessly overfishing. In order for this plan to be successful, close numbers of Pollock, herring, and Western stock sea lions will have to be observed and recorded. If immediate action is taken, the sea lion population could rebound within a few generations.
Loggerhead turtles are species generalists. Loggerheads compete with other carnivorous predators whose diets overlaps with theirs. For example, juvenile loggerheads and Kemp’s ridleys in waters around Long Island have substantial diet overlap. Interspecific competition also occurs for nest sites for beaches shared with other sea turtles species; however, this problem was likely greater in the past before modern turtle population declines. The diet of loggerheads includes many species that are harvested by humans and consequently decreases in food resources can result in sublethal effects in the form of decreased growth rates and reproductive output (Bjorndal 2003).
In the other hand, the speaker contends this by explaining that whales were declined because of the human hunting , orcas changed their diet to survive and because just of the sea mammals were available, human started to hunt sea mammals and cause the decline. Third, the author asserts that scientist believed that the pollution hypothesis could also the uneven pattern of otters decline. However, the professor opposes this pint by explaining that the uneven pattern is better explained by orcas predation theory. she added that it depends on whether the location is accessible by orcas or not, so because orcas are large, they can 't access the shallow region where sea otters have not