Have you ever wondered if plankton are really that important to us? Before this lab, I never even thought about plankton, or how they even contribute to us. Phytoplankton are able to convert carbon dioxide into carbohydrates and oxygen used for life (through photosynthesis), and they account for about 95% of the ocean’s primary productivity, while providing about half on Earth.
Phytoplankton is a primary food source to zooplankton and the rest of food web in the ocean. The marine food web is really important to understand as it has many levels as we do ourselves and on land. The larger animals eat the smaller animals and it continues to the smallest organisms that are found in the ocean. Phytoplankton, are able to produce their own food and photosynthesize which not all marine organisms can do. Without them the entire food web would be displaced. These small organisms are so tiny, you would not be able to see them without a microscope, but they are such an important role in the food web by being able to produce their own food. They primarily use the sunlight to photosynthesize whi...
According to a scientists in the video, if all of the carbon that sits at the bottom of the ocean were released back into the atmosphere, the amount of carbon currently in our atmosphere would double1. The scientists in the video explains that they know carbon exists down at the ocean’s depths because marine life that dies will sink to the bottoms of the ocean to decay producing this organic carbon1. This is important to know because it is such an important system, that without these phytoplankton at the start of the process that brings carbon to the ocean floor, then the atmosphere would contain two times its carbon
They also look after the quality of coastal waters by watering down, sifting, and settling deposits, left-over nutrients and contaminants. They are highly productive ecosystems and provide habitats and act as nurseries for all manner of life.
The reduction in photosynthesising biomass led to an increased reliance on the Worlds other carbon sink, Oceans. Between 26-44% of CO2 in the atmosphere is absorbed by oceans by photosynthesising organisms, mainly phytoplankton (Archer, D. and Pierrehumbert, R., 2011), seawater chemically reacts with aqueous Carbon Dioxide, one of the end products is Hydrogen ions (H+) (NOAA, 2013). The increased concentration of H+ results in the ocean becoming more acidic, since pH is determined by concentration of Hydrogen ions.
Once that step is determined, scientists will assign that group of species to a trophic level; to either the primary producers, primary consumers, secondary consumers, or the tertiary consumers. The bottom of the chain and the trophic level that depends upon by all others is the primary producers. These primary producers consist of autotrophs, which are capable of deriving their food and energy source without consuming organisms or substances taken from other organisms. In the Arctic lake of Alaska, one of it’s primary producers consists of aquatic plants and algae. These aquatic and algae contain chlorophyll, which means that they can use light energy from the sun to synthesize glucose and other organic compounds, that they can use for cellular respiration and building material for growth.
With carbon dioxide levels continuing to rise over the past few decades (fig. 1) and now into the future, concern has been brought to what is happening to the carbonate chemistry of the oceans. Because of these changes in chemistry, the ocean is becoming more acidic. Along with climate change, ocean acidification may be one of the greatest threats to our planet. The higher the ocean’s acidity level goes, the lower the calcium carbonate levels will drop. Even though this is a big scale issue, my goal is to focus on and underline what these changes will mean for the marine life that depend on the calcium carbonate in seawater. I will go in depth with specific regards to a study regarding pteropods or sea butterflies.
In absence of calcium carbonate, coral and shellfish can’t survive. The ecosystem of ocean depends on these organisms because they offer a large source of food at the bottom of the food chain. They need to be abundant in order t...
Some studies have found “that atmospheric CO2 concentration is approximately 383 parts per million by volume (ppmv), a level not seen in at least 650,000 years, and it is projected to increase by 0.5% per year throughout the 21st century.” (Guinotte) “This is because…the ocean absorbs about a third of fossil fuel emissions, but this amount is likely to increase to 90% in the future.” (Bralower) As a result, “the chemistry of the world's oceans is changing at a rate not seen for 65 million years, with far-reaching implications for marine biodiversity and food security, according to a new United Nations study...” (Knight) “…This change is cause for serious concern [for] many marine organisms…, [because they] may not be able to adapt quickly enough to survive these changes.” (Guinotte)
According to NOAA phytoplankton are microscopic organisms that continuously convert sunlight and nutrients into living tissue. Phytoplankton can be harmful to the bay because they at an uncontrollable rate causing harmful algae blooms when there is an abundance of nutrients. Phytoplankton also serve as the main food source for a larger but still microscopic organism named Zooplankton. Marine Bio.org did a study on zooplnkton revealing that they are very weak swimmers making them an easy food source for any larger organsim. Zooplanktons’ main purpose serves as the main food source for small fish and
Coral reefs are limited to where they live. Most live in the narrow band of the equator, as they need light, the shallow near shore areas is where most coral reefs can be found. Their biological riches, though, hold value far beyond their beauty. After tropical rain forests, coral reefs may be the most biologically diverse ecosystem, holding a substantial portion of the basics of life on the planet. They form what is thought to be the most species rich ecosystem in the oceans, the crucible of life some 3,000,000,000 years ago. Covering just 0.17% of the ocean floor, an area the size of Texas, coral reefs are home to perhaps one –quarter of all marine species, earning them the title “the tropical rain forests of the Oceans.”
In the coral reef habitat, food consumption is based on sunlight. The sunlight gives food to the plants, bacteria and algae, which is eaten by the plant eaters or herbivores, such as parrotfishes. The bigger carnivores, such as the Whitetip Reef Shark, in the ecosystem then eat those fishes along with the bacteria and plankton in the water. On the other hand, the deep sea is based on dead animal bodies or waste, shown in the fake whale carcass in the deep sea exhibit. Organisms of the deep sea feed on waste because sunlight does not have the ability to reach that deep in the ocean. Nektons are the fishes that feed on the waste produced by the epipelagic zone.
Shrimp can be very intelligent animals and have very amazing things such as being clear, this may seem weird but yes, they are clear. Shrimp live in the ocean and come in contact with many different plants animals. The most common plant that the shrimp comes in contact the most with and use for protection is seaweed, coral, and algae. Shrimp use the for protection to hide from the other animals they depend on shrimp for their diet, most of these animals are sharks, whales and sometimes crabs are included. The change of having no eyes helps the shrimp hide from these and keeps the population at a good rate and this has also helped overfishing with not having contact with other animals and causing lots of movement to the other animals and fisherman.
Roach, John “Source of Half’s Earths oxygen Gets little Credit” National Geographic. 28 October 2010. 16 April 2014 http://news.nationalgeographic.com/news/2004/06/0607_040607_phytoplankton_2.hyml
Thesis: Sharks should be conserved because they are an important part of the ocean, attacks are often incidental, and human behavior influences the behavior of sharks.
These results agree with the hypothesis that our “untouched and super-productive world” is affecting marine life ecosystems (Vannela, 2012). All of these results combined confirm the overall hypothesis that pollution is getting worse in the ocean and more marine life ecosystems are being affected, but there
Seagrass is not just a food source for micro species, but also macro species such as manatees, turtles, dolphins and dugongs (Yamada and Kumagai 2012). These marine organisms are all supported directly and indirectly by seagrasses, with some entirely dependent on it. Seagrass is often underestimated in its significance as the vast role that it plays in the oceans ecosystem is not fully understood. ...