Starting with the food chain in Chesapeake bay, the plants and algae play the basis role in food chain. They make their own food by sunlight. These plants and algae are bay grass and free floating algae. The plants and algae not only feeds all other organisms in the water but also gives homes and shelter for other organisms. Frogs lay their eggs on the bay grass, giving the tadpoles a home.
This had a huge effect on the planktons. Zooplanktons the eat phytoplankton. If there isn’t much phytoplankton for the zooplankton to eat, there numbers will decrease. The article “ The Short‐Term Impact of the Zebra Mussel Invasion,” “phytoplankton fell by 80 percent. Zooplankton (which eat phytoplankton) declined by half.
Watts Bar native fish are: spotted bass, smallmouth bass, largemouth bass, crappie, and black bass. Likewise to the lakes talked about above, this lake also contains harmful contaminants, one of them being lead. Many people eat catfish from all of these lakes, and catfish are bottom feeders. Lead sinks to the bottom of the lake because the atomic weight of lead is higher than that of water; lead is also denser than water allowing it to sink to the bottom.
Small mercury particles were often floating on the top of the water for miles past the mining sight. Mercury was the quick fix that settlers were looking for. However, this quick fix caused a life-time of destruction, mercury found its way not only contaminating the water supply and soil but through the food chain. More often found on the wildlife and vegetation, especially in the tissues of fish in the rivers, thus causing serious health issues to humans eating high amounts of fish. Overall, the California Gold Rush based on history did not have many contributions and positives to the environment.
After the prey is torn, they shred it into smaller pieces and eat it with a small beak that looks like a mouth. (Squid-World) “Octopuses creep toward its prey and then pounces, grabbing hold with its tentacles. Suckers on the tentacles hold the prey firmly while the octopus drags it to its mouth.”(Grid Club) Both creatures also use inject venom, that paralyzes the prey.
This includes increased concentrations of heavy metals such as Mercury (Hg) and Lead (Pb) found in the liver tissue and/or chemical toxins such as man-made Polychlorinated biphenyls (PCBs) and dichlorodiphenyltrichloroethane (e.g. DDTs) and these are found in the blubber tissue of cetaceans.(Pierce et al. 2008; Jepson et al. 1999): To investigate the high proportion of Harbour porpoises dying from infectious disease, chemical sampling was undertaken in the liver/blubber tissue of the strandings to research the effects of PCBs earlier mentioned as well as heavy metals like Mercury (Hb). The amounts of these chemicals were examined in those individuals killed by infectious disease and those that were healthy and died from physical trauma.
This beautiful looking fish packs a punch: The fish has venomous spines that deliver an extreme pain that can last for days. In extreme cases, the venom can even cause paralysis. The LIonfish is an apex predator on the reefs using its fins to coral small fish and anything it can fit into it’s mouth into a corner before it strikes quickly swallowing it whole. The lionfish feeds on an array of over 50 species including ecologically and economically important species. ("Lionfish Biology Fact
There multiple strains of the bacteria which cause different reactions. This bacteria was placed in local salad bars by the Rajneeshpuram members to infect the local population (Davisson 2003, 1) (Hilow, 1995). A similar event, on a larger scale could be used today to sicken or kill hundreds or even thousands of people in the United States. One possible way to accomplish this is to infect crops such as lettuce which have porous skins and easily carry biological agents.
Research on the use of toxicants involves efficiency, delivery systems and by-kill (Marks et al. 2006). Moseby & Hill (2011) undertook a large scale baiting trial with 1080, they found a major decline in cat activity after the first baiting event however. 1080 is not species-specific, Denny (2001) calculated that, at least 61 native vertebrate species were known to have consumed 1080 poison bait, and 24 of these natives were known to have been killed by 1080 poison. Eason et al. (2010) explored the use of Para aminopropiophenone, a poison used as an alternative to others, it’s said to provide gradual loss of consciousness and death without the pain and suffering that other compounds can
According to Fredrick Humber, a marine sciences professor at University of South Alabama, the ocean-bottom sampling reveled that migrating rays are eating all adult scallops which prompted the state to close bay scallop fishery in 2004. In addition, because of the dense population of cownose rays, scientists are worried the rays will begin targeting other species. (Peterson 2015). The information provided by the journal articles did contribute to the take home message.
Those pesticides interfered with the ability of the birds to produce viable eggs. Another reason is loss of nesting and wintering areas due to development along rivers. Indiscriminate shooting was responsible also for keeping the population down until the passage of the Bald Eagle Act of 1940. With that bald eagles have made a strong
Ocean acidification is killing off the oyster population, which is also affecting the jobs in Washington. Initially, ocean acidification is when acidic gases are emitted into the air and absorbed into the ocean. According to the video Ocean Acidification by NOAA, ¼ of all the carbon dioxide release into the air is absorbed into the oceans. Some major contributors to carbon emissions are automobile gas and factory emissions. This is a problem in the Pacific Northwest because acid sinks to the bottom, but Pacific winds bring acidic water up from the bottom near the shore by the shellfish.
Chapter five of Garbology begins with Mary Crowley and her ship, the Kaisei. Using the Kaisei, Crowley and a couple of her friends developed a nonprofit research named Project Kaisei. Once all the big pieces of trash was cleaned out and the water looked ‘normal’ they discovered something very troublesome. The team scooped the water with a mesh net and brought up thousands of tiny pieces of plastic that had soaked up all the nasty dangerous chemicals that had been dumped into the water. These tiny particles are being eaten by small fish who are fairly close to the bottom of the food chain; once they eat these particles they’re passed down through the food chain.
Perception divides people or things into what can be perceived either as good or bad. Although the authors are unknown, the pieces were written two years apart. The two passages are contrasting because the first passage is an encyclopedic genre and the second passage, hyperbolic. The Okefenokee Swamp appears beautiful and inviting in the first passage in order to make the swamp appealing and bring the imagery to life. The swamps tone changes in passage two and evokes a dark and eerie feeling in an effort to keep visitors