A) coastal upwelling zones B) coral reefs C) equatorial upwelling zones D) mangrove swamps E) All of the above tropical areas have relatively high primary productivity. What is the depth of the photic zone determined by? Satellite-Based Global Ocean Primary Productivity. Humans are the primary cause There is a phylum of bacteria that can photosynthesize? 276) ____ A) photosynthetic bacteria B) phytoplankton C) dinoflagellate D) primary E) zooplankton 277) Productivity is limited by _____ in polar regions and by _____ in the low-latitude tropics. Create. Thanks to primary productivity, we can measure how much sugar and oxygen are produced in water sources, especially in oceans and by terrestrial plants. https://quizlet.com/275652110/midterm-4-chapter-13-flash-cards Learn vocabulary, terms, and more with flashcards, games, and other study tools. ocean productivity are revealed by the following defi-nitions (Bender et al. Biomass is the dry weight of all the organic matter within organisms of the ecosystem. The poles (in the summer), since there is very cold water, so no thermocline, and light. Describe the causes of biotic disturbance in the Arctic. Describe how salps could take over from Antarctic krill at the base of the food web. - In polar oceans, nutrient concentrations are usually adequate and do NOT limit productivity. A combination of ice cover and reduced PAR (perhaps it was a cloudy day!) Total net primary production on Earth exceeds 100 billion tons of carbon per year, and it plays a profound role in the global carbon cycle. Primary productivity process will also require carbon dioxide besides oxygen during the night. Extra dissolved carbon dioxide in the ocean is the primary cause b. Sample Day #3: Primary Productivity again is much lower than on Sample Day #1. False What is TRUE about primary causes of ocean acidification? Primary production is the production of chemical energy in organic compounds by living organisms.The main source of this energy is sunlight but a minute fraction of primary production is driven by lithotrophic organisms using the chemical energy of inorganic molecules.. - In polar oceans, productivity is limited by the lack of sunlight in the winter.-Polar oceans typically display a strong, permanent thermocline. Figure 13.18, page 420 D. Regional Oceanic Productivity 1. 71) Productivity in polar oceans is: A) light-limited. C-Primary productivity in polar seas reaches high levels during the polar summer. macro. Consequently, primary production provides a key ecosystem service by providing energy to the entire food web in the oceans. Primary productivity in tropical oceans is limited by the amount of nutrients available. Primary production is the production of chemical energy in organic compounds by living organisms.The main source of this energy is sunlight but a minute fraction of primary production is driven by lithotrophic organisms using the chemical energy of inorganic molecules.. ocean productivity are revealed by the following defi-nitions (Bender et al. Primary Productivity Primary Productivity is the production of In the ocean, autotrophs which are responsible for primary production consist of phytoplankton, marine plants, and macroalgae since they all perform photosynthesis. primary. “Gross primary production” (GPP) refers to the total rate of organic carbon production by autotrophs, while “respiration” refers to the energy-yielding oxidation of organic car-bon back to carbon dioxide. Primary productivity is the rate at which energy is accumulated and converted through photosynthesis or chemosynthesis into organic substances. - In polar oceans, productivity is high year-round. Productivity in Polar Oceans The low availability of solar energy limits photosynthetic productivity in polar areas. C) oxygen-limited. They are cold with a weak thermocline (temp gradient) and a weak pycnocline (density gradient). Without the primary productivity process means there will be no food whether it is for the plants or the other living beings. Why is it beneficial for benthic invertebrates to have a planktonic larval stage? C) oxygen-limited. a cloud (condensed water) that touches the ground, When warm, moisture-laden air cools—>gas condenses into small liquid droplets, when deep, cold (usually nutrient-rich) water is pulled to the surface, -the net flow of a current is 90 degrees to the right of the path of the wind that drives it (Northern Hemisphere), Explain the weather in the Central Valley, -hot and humid air comes in from the Pacific, just above bottom of photic zone—light is at approx 1% of surface's intensity, organisms decompose organic matter and return phosphates and nitrates. -Antarctic macrobenthic diversity at least 6 times as high as Arctic. silica (makes many animals' shells), CO2 & H2O, Microscopic plants that are the dominant primary producers in the ocean (do 90-96% of primary production), coastal regions, because there is so much fertilizer with nitrogen and phosphorous, phytoplankton remove CO2 from the surface waters and store it in the deep ocean (they consume a lot of CO2 and bring it to the bottom with their bodies when they die). colleenmcf. Lecture 7 – Life in the Ocean – Primary Productivity and Respiration Life determines ocean chemistry and responds to it. What are some problems with ocean fertilization when considering it as a means to mitigate global warming? All the above tropical areas have relatively high primary productivity. Where is there the greatest phytoplankton bloom? Describe how productive Antarctic sea ice is. 42 terms. Primary production is the most basic building block for energy and the basis for food webs in all environments and ecosystems. Although the Arctic is still the world’s least explored ocean, new expe-ditions are about to give us much greater knowl-edge of the mysteries of this polar frontier. 31 233) Productivity in polar oceans is _____. Describe an example of pelagic exchange across the Arctic. 1987) (Figure 1). Choose from 156 different sets of productivity ocean flashcards on Quizlet. Describe the physical characteristics of the Antarctic continental shelf. animal plankton, heterotrophic, eat phytoplankton. “Net primary production” The year is split into periods of constant night and day. E) nutrient and oxygen-limited. 233) ____ 234) Productivity in tropical oceans is generally _____. The cold water at the bottom remains unaffected by heat, while the surface is heated, creating a great difference in density, leading to stratification. Productivity in the Ocean. In this lecture you have the opportunity to explore a number of examples of how ocean productivity varies. (select all that apply) a. The year is split into periods of constant night and day. excess nutrients causing a bloom that uses up oxygen and creates a dead zone, a microorganism, especially bacteria, that causes fermentation/ disease, only spend part of their lives suspended in water column. 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