Exposing the structure of an arctic food web helena k. Tiny animals, including crustaceans, feed on phytoplankton. Gracie ankcorn leopard seal harp seal 22,220 kcals polar bear krill snowy owl caribou cotton grass phytoplankton arctic cod arctic fox arctic hare arctic wolf arctic willow arctic azalea orca polar bear caribou moss lichen lemmings apex predator key. Sunlight provides energy for microscopic algae to grow. Several methods have been proposed to combine assessments, ranging from.
Lesson 7 a quick introduction to food chains followed by expanding it to food webs. A food chain goes up in trophic levels depending on what the specific organism consumes. Even creatures living many metres below the arctic oceans surface rely on algae that grow in sea ice and so, like those living near the surface, may feel the. Then students watch a video about plankton and why they are so important. Hamback 3, elisabeth weingartner3, claus rasmussen4, jeroen reneerkens5,6, niels m. The annual production of algae, the base of the food web, increased an estimated 47 percent between 1997 and 2015, and the arctic ocean is greening up earlier each year. Perhaps one of the most famous arctic mammals is the polar bear, whose range lies primarily within the arctic circle. Snowy owl lemming plants snowy owl arctic hare plants snowy owl ground squirrel plants ask students if. The traditional view of polar ocean food webs, based largely on qualitative analyses, is of. Dramatic reductions in arctic sea ice and changes in its timing and composition affect the entire food web, including many inupiaq communities that continue to rely heavily on subsistence hunting and fishing.
Understanding the structure and functioning of polar pelagic. When food chains connect or overlap, it is called a food web. Strong seasonality in arctic estuarine microbial food webs. The canada arctic is a region that covers 40% of the canadian landmass, and the population of 100,000 canadian habit there. Tell them to keep reading the cards and adding more organisms on to their paper. Arctic food chain lesson plan for 3rd 6th grade lesson. This arctic food web activity is a great example when youre teaching ecology. Canadian arctic food web bruce qins science 7 portfolio. Species of arctic fox and arctic hare, for example, are snowy white in winter but molt and grow a brownish or greyish fur coat during the summer months. Microbial communities in the coastal arctic ocean experience. Producers are highlighted in green, primary consumers in yellow, and secondary consumers in red. Arctic smorgasbord activity arctic food web cards photo.
Arctic food web free lessons teacher created resources. Plankton are at the mercy of the currents and movement of the water. If you come across a polar bear during your arctic cruise youll be looking at the worlds largest species of bear and the largest land predator. Polar bears prefer seals, but will also eat fish, baby. It has many predators such as arctic voles, lemmings and shrews. Conceptual diagram of the planktonic food web, indicating the.
Uarctic thematic network on northern food security. There is a large difference in size between male and female polar bears with the male weighing anything from 350 to. A food web is a system of interlocking food chains, or, a system of interlocking hierarchical sets of organisms that are dependent on each other for food. We would like to show you a description here but the site wont allow us. The arctic ocean is in danger due to global warming. In the second of a twopart report marking the 40th anniversary of the wilderness act, we profile the gates of the arctic national park, north of the arctic circle in the brooks range of alaska. Polar bears and orca whales dominate the arctic ocean food web and eat seals, whales and fish. Report of task group 4 food webs of marine strategy framework.
Researchers brave icy waters to study arctic food web. Status and trends in the structure of arctic benthic food webs. These form an important food supply for larger zooplankton species, which in turn feed birds, fish and some mammals. Over the coming weeks, photographer matthieu paley will be sharing his visual food diaries with proof as he travels the globe in search of our ancestral ties to the food we eat. Arctic foods, founded in 1957, promises you quality meat products second to none. The organisms on the very bottom are the producers who convert sunlight into usable energy through photosynthesis. The top predators in the arctic food web are the orca whale and the polar bear. Now study the arctic food web illustration below online or by printing out the high resolution pdf. In the arctic ocean, sea ice melt is the crux of the food web.
Pdf on dec 8, 2011, lena seuthe and others published planktonic food webs. Lesson 7 antarctic and arctic food webs and the global. A food web shows a more accurate picture as in reality it is rare for anything to just eat one kind of food. So, why not use it to your advantage and find science activities that get them up and working together.
Arctic, food web, climate change, seaice retreat, trophic transfer. Build a food weba complex model that shows how various food chains in an ecosystem are connectedusing this interactive game adapted from the bigelow laboratory for ocean sciences. Even fluffy white baby seals will ultimately grow up to a dark brownbetter to blend in with the dark arctic ocean waters. From an applied perspective, our description of an arctic web suggests new avenues for understanding how arctic food webs are built and function and. Arctic food web example this can be used as an answer key but you do not have to stick strictly to this design. This arctic food chain lesson plan is suitable for 3rd 6th grade. Study reveals how arctic food webs affect mercury in polar.
Exposing the structure of an arctic food web article pdf available in ecology and evolution 517. Note the different species and where they fit into the food web trophic levels decribed above. How climate change is upending the arctic food web. As the ice melts away the sunlight hits the water giving energy to microscopic algae to grow. Players must position the names of producers and consumers in the correct places in a diagram. Explore the food chains that support arctic ecosystems. Help students analyze the flow of matter and energy through trophic levels by constructing various arctic food web. Global warming alters arctic food chain, scientists say. Stay connected to your students with prezi video, now in microsoft teams. Although the polar bear lives on land, its an avid swimmer. Algae are eaten by zooplankton, which in turn are eaten by fish, birds and whales. Status and trends in the structure of arctic benthic food webs taylor. A food web is different individual food chains that all from the same ecosystem connected together to show the travel of energy through an ecosystem. If one part of the food web becomes extinct, the entire web may be affected, causing drastic consequences.
The arctic willow is an autotrophic plant and a producer. Thus, our findings call for similar explorations of link structure across multiple guilds in both arctic and other webs. Arctic moss is a decomposer that breaks down consumers 2. Objectives on successful completion of this lesson, students will be able to. Polar bears are the top of the arctic s landbased food chain. Many arctic animals even change their coloration seasonally. Arctic moss is an autotrophic plant and is a producer. As the sea ice begins to melt every spring, sunlight is able to hit the water. Status and trends in the structure of arctic benthic food webs epic. This year, as the sea ice extent continues to decline and scientists race to understand climate change across the arctic, brown and his canadian colleagues will be tracking how ice algae energy is transferred throughout an entire ecosystems food chain in foxe basin, north of hudson bay, by measuring the same chemical marker in sediments, plankton, fish, and various marine mammals. It is a graphical description of feeding relationships among species in an ecological community. Polar bears prefer to eat ringed and bearded seals, but will also eat arctic fox, walrus and beluga whales. If a consumer eats more than one type of organism, there should be an arrow to each organism it consumes. Local food procurement strategies for combating food insecurity, angel chen and david natcher.
The biggest human impact on the canadian arctic is global warming, both the glaciers and the ice sheets are melting, and the animals are losing habitats. When the sea ice begins to melt every spring this is the signal for life to explode into action. This algae becomes food for the tiny armies of zooplankton which become food for fish, birds and whales. In the arc c ocean, photosynthe c pro sts known as phytoplankton form the base of a food web. Producers in the arctic are mostly small shrubs and lichen, like. Polar bears are the top of the arctics landbased food chain. Both copepods and humpback whales ac vely feed on phytoplankton. Food security governance in the arcticbarents region 2018, hossain, kamrul, raheem, dele, cormier, shaun eds.
P4686 and our customer service department can be reached toll free at 800. An arctic food web includes the following organisms. Sep 29, 2014 we all know that students love any excuse to talk and move about the classroom being the social creatures they are. The completed diagram reveals how energy flows through an antarctic ecosystem and the relationships between. Question 3 an arctic food web includes the following organisms. Copepods are eaten by arc c char, amphipods, humpback whales, and arc c cod. Copepods and other invertebrates animals without a backbone feed on microscopic algae. Print and fill out the arctic food web trophic level data sheet pdf below you can also use these two food web graphic organizers 1. In the arctic, food chains have the potential to be drastically affected by climate change. I hav a project and i need 10 animals i already have my 10 animals which is a. The arctic cod boreogadus saida is a small fish that plays a crucial role in this sea ice food web. Arctic food web an interactive ecology lesson ecology. Polar bears eat seals usually ringed and bearded seals.
The arctic is the northernmost region of the earth. Food web structure of a coastal arctic marine ecosystem. Sandra zicus algae convert solar energy into chemical energy. The network has published a book on indigenous youth, climate change and food culture. Researchers brave icy waters to study arctic food web 2011, january 10.
These subsidies likely enter food webs via heterotrophic bacterial and protistan. Foodweb structure is a key ecosystem characteristic, describing energy flow, ecological interactions, and strength of linkages within the community peterson and fry, 1987. This is a food web i created for the arctic tundra. This provides details about plankton being at the bottom of the food chain and their link to food supplies, oxygen supplies and fossil fuels.
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