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Looking at air temperature records can tell us about the climate of a certain location. Key words: Ecosystem, Food web, Lakes, Rivers Fig-1.1 INTRODUCTION Freshwater ecology is a specialized sub category of the overall study of organisms and the environment. … In the Indian River Lagoon System, many organisms compete for food. Vallisneria is a submersed (underwater) native species in the Hudson River. In this dataset, students can explore how air pollution has changed over time in the USA and in New York. Bacteria consume the DOM if they have the right tools to do so (the right enzymes). Alternatively, students can write a 1-2 page paper about the effects of the zebra mussel invasion on the Hudson River. Includes the major groups of living things in ponds, and a short discussion of eutrophication, along with the importance of detritus. This food web shows the role played by invertebrates (animals without backbones), such as mayflies and stoneflies, in freshwater ecosystems. Strayer, D.L, and L.C. Food webs relate directly to the Council’s Columbia River Basin Fish and Wildlife Program, which seeks to establish and maintain an ecosystem that sustains an abundant, productive and diverse community of fish and wildlife. 1. many different (and changing) microhabitats. The food web shows how interconnected all of the different organisms are. Science. The “Meet the Scientists” link brings you to the videos.). Food chains help us understand the connection between living things. Students will define and classify resources from the Chesapeake Bay watershed in order to describe how each of these organisms interacts. Students will know how temperature changes impact organisms and ecosystems and be able to discuss several climate change-related impacts on the Hudson River ecosystem. A food web (or food cycle) is the natural interconnection of food chains and a graphical representation (usually an image) of what-eats-what in an ecological community.Another name for food web is consumer-resource system.Ecologists can broadly lump all life forms into one of two categories called trophic levels: 1) the autotrophs, and 2) the heterotrophs. Students will know the spatial relationship of trees and seeds/seedlings of the same species in their woodland plot and be able to explain how the species came to be there. For example, the 1st level forms the base of the pyramid and is made up of producers. Students recommend who GROW should hire as a scientist after reviewing three job applications. Students will know the effects of deforestation on an ecosystem and be able to use data to explain ways that deforestation impacts a stream. This lesson introduces new and exciting research conducted on the Tar-Pamlico River while addressing essential terminology for understanding the interdependence of plants and animals with their ecosystems including food chain, food web, energy pyramid, adaptation, decomposers, producers and consumers. Caraco, and J.J. Cole. Therefore a food chain is not always an accurate description of how organisms in a habitat or an ecosystem interact with each other. Because the snails are fully aquatic, mercury cycled back into the river's detrital food web when they died. What eats it? How do populations change in the Hudson River ecosystem, and how do these changes affect the larger ecological community? Caraco, J.J. Cole, S. Findlay, and M. Pace. The lessons in this unit provide methods for students to carry out three investigations to ask questions about differences in the land cover types for three important dimensions of the schoolyard ecosystem: The unit culminates in a final lesson where students have the opportunity to pursue topics they identify themselves. 8 Oct '14 59Ecology & Ecosystem 59. Students will use HRECOS to generate graphs of Hudson River water temperature data from the month of July in the years 2010-2016, identify trends in the data, exceptions to the data, and make predictions about possible causes of the data trends. Ranking of 12 patch‐scale food webs in the River Tiber (Rome, Italy) across different species extinction scenarios (A‐D) in terms of vulnerability to biodiversity loss, as calculated from food web Robustness (indicated as V R) or Resistance (indicated as V RC). Students will know how a large storm affects the flow of water in streams and be able to create a graph that explains their answers to this question. Students will know how to answer the question, “Are fish more contaminated from different locations in the River?” and be able to provide evidence to support their answer. Part 1: “Introduction to the Hudson River Food Webs”. predicted no-effect concentrations (PNEC), for an entire ecosystem are based on the use of assessment factors to extrapolate from single-species toxicity data derived in the laboratory to community-level effects on ecosystems. 2006. A wastewater travel log, Who Eats What Exhibition- Performance Assessment, Wildlife Distribution & Abundance in Managed Ecosystems, Worms, Water, and People on the Schoolyard, MST 1 - Mathematical analysis, scientific inquiry, and engineering design, MST 2- Informational Systems/ Information Technology, MST 4- Physical setting, living environment and nature of science, MST 5- Engineering and computer technology to satisfy societal needs, MST 6- Interconnectedness of mathematics, science, and technology (modeling, systems, scale, change, equilibrium, optimization), MST 7- Problem solving using mathematics, science, and technology (working effectively, process and analyze information, presenting results), Student Worksheets for Hudson River Food Webs. The American Museum of Natural History’s “River Ecology” program has excellent supplemental videos and readings focused specifically on the zebra mussel invasion. In this module students learn about microbes as decomposers, develop experimental design skills, and apply their knowledge to a variety of everyday situations. Students will know how to recognize variability in hydrofracking data, and will be able to make an appropriate graph of a selected variable in Excel or by hand. Which soil and leaf litter-dwelling organisms live here? Lower level students may need help understanding how bacteria, detritus, and phytoplankton are involved in the food web. How big is it? If so, what processes are involved that may influence the amount of rainfall, or throughfall, that reaches the ground? Scientists measure the amount of carbon as a proxy for phytoplankton production. Students will understand how the invasive water chestnut plant impacts the Hudson River differently from the native water celery plant and be able to explain these impacts based on a series of graphs. Students will know how turbidity and hydrofracking are connected, and will be able to explain the impact of hydrofracking with respect to ecosystem health using data. These ecosystems support vast food webs. Fernald, S.H., N.F. Invertebrates feed on living and dead plant matter, and on each other. The food web in the ocean ecosystem is subject to tidal zones, coral reefs, river mouths, estuaries and reefs where saltwater is predominant. Students will hypothesize how a storm event might change the physical and chemical characteristics of a local stream and be able to collect data to support or negate their hypotheses and communicate these results to others. Estuary. Using data from the Hudson River Environmental Conditions Observation System (HRECOS) you can track the storm and its effect on the river. During Part 2 students will be split into six teams. Invertebrates feed on living and dead plant matter, and on each other. This food web shows the role played by invertebrates (animals without backbones), such as mayflies and stoneflies, in freshwater ecosystems. Students will know that mud worms at Foundry Cove evolved cadmium resistance and be able to explain how the scientists verified that cadmium-resistance is an inherited trait. Lower level students will focus on predator-prey relationships, or one-step relationships, such as the fact that if a new mussel is introduced, there will be fewer phytoplankton in the river. Students will know at what level of salt concentration aquatic organisms are affected, and be able to explain the results of an experiment to determine these levels. In an ecosystem, plants and animals all rely on each other to live. Ongoing work is investigating food-webs in floodplain lakes which support modified biotic communities through the proliferation of introduced fish. The accuracy of the map can be improved through the knowledge gained by field checking. Students will know how the climate of the Hudson Valley has changed over the last 400 years and be able to explain these changes. Students make food webs of their study site, then trace how a change in one population could affect other populations within the web. A food web consists of all the food chains in a single ecosystem.Each living thing in an ecosystem is part of multiple food chains. Food Chains / Food Webs The interrelationship between species in the river, wetland, grassland, and woodland habitats of the Platte River prairie ecosystem is a complex, dynamic food system. At 34,375 square miles, it is one of the largest nearly intact temperate-zone ecosystems on Earth. A graphical overview of the carbon cycle, both prior to human burning of fossil fuels and after. This provides redundancy in food options and so makes the food web more resilient to a decrease in abundance of a group of organisms should conditions become unfavourable. Students will know how the pollution in the Hudson River has changed over time, and be able to explain the consequences of these changes. Engage: Formative Assessment: How did zebra mussels affect the dissolved oxygen and water transparency of the Hudson River? These lessons and investigations will support you in your efforts to get students outside, studying their own backyard using simple methods and materials. They will also know that the Hudson River food web is changing in response to the zebra mussel invasion, and will be able to make predictions about how native organisms will be affected by this invasion. Zebra Mussel (Dreissena polymorpha). If there are differences in rates of evaporation, what could be some possible causes or factors affecting these differences? Optional, “Journey down the Hudson” PowerPoint is a good introduction to the Hudson River if your students need additional background. This dataset shows the stream depth, conductivity, discharge, and temperature of the Wappinger Creek. Students will be able to discuss the life cycles of common macroinvertebrates and use data to compare macroinvertebrate larval abundance to adult numbers and make inferences. The central investigation of this unit helps students answer the question "Where does the stuff living things are made of go after those organisms die?" Students will know how the application of road salt impacts water quality and be able to discover the different sources of salt as well as the amount of time that salt stays in the aquatic ecosystem. Students will know how the hydrofracking fluid affected the health of the trees and soil in the forest, and will be able to explain the drawbacks of flowback water with respect to ecosystem health. Youngsters try to explain differences based on environmental conditions they can observe - soil conditions, ground cover and local physical conditions. This dataset contains information on the number of European honey bee colonies, the use of pesticides, and the acres of Bt Corn planted in the USA since 1939. Students will understand the process of hydrofracking and will be able to use a short article to explain the benefits and drawbacks. Have you ever thought about the animals and plants that live in and around a river and how they depend on each other for food? Students will know the products and reactants of photosynthesis and be able to explain how the process of photosynthesis affects leaf structure. Students will know that aquatic communities change composition based on vegetation types and be able to explain the differences. The rest is lost as waste, movement energy, heat energy and so on. Students will draw what they see. Complete the chart by using the slides in the PowerPoint. School sites are habitat for creatures other than humans. Does the total number of tree species differ in different parts of a forest stand? Field checking is the process of verifying a land use map by physically checking the schoolyard. Students explore the effects of hydrofracking using secondary data and first-hand investigations designed to help them understand how salt pollution impacts ecosystems function. In the ecosystem of rivers, the food chain is short e.g. Students will know where nitrogen exists and in which forms, and will be able to draw a diagram showing the movement of nitrogen in ecosystems. a state of continuous physical change. Oecolgia, 165:1063-1072. Macroinvertebrate data collected from the East Branch of the Wappinger Creek. Students will understand the effect of "nature preserve" size on the diversity and abundance of organisms protected within the preserve. Project Methods The overarching approach is to use food web variation produced by large-scale experimental riparian manipulations and differences in land use both to generate insight into important processes controlling river ecosystem function and to gain information on how human activity affects river food webs. Students learn about both the biotic and physical history of the Hudson River ecosystem, including its geology, tides, and watershed. Kahnle. For example, when predators consume herbivores, the plants that the herbivores would … Once they have drawn their food webs, students can view and critique other food webs. Have students complete the student packet. Producers are usually green plants and are essential for the survival of the community. Which group of organisms is missing from the food web above? The River Ecology program focuses their research on; providing information on the overall structure and function of aquatic ecosystems; providing specific information on available resources; and evaluating various management, consveration, and restoration practices, to determine how such practices affect aquatic ecosystems. This unit is unique in that it focuses on collecting long term data about the changes in the populations of macroinvertebrates. Obtaining and utilizing these resources will have a direct affect on the quality of the environment in a given area. Show the first portion of the “Hudson River Food Webs” PowerPoint, including the slide entitled: Zebra Mussels arrived in the Hudson River in 1992 to introduce students to zebra mussels. They will make comparisons among the data and predict the preparedness of NYC to withstand sea level rise. A school site consists of both living and non-living things. Food Web Example 8 Oct '14 60Ecology & Ecosystem 60. Students will know how much water enters and exits their school building, creating a water budget and be able to understand how land cover affects the water that enters the school campus. %PDF-1.5
Students will know how dissolved oxygen enters water and be able to explain at least two variables that affect the amount of dissolved oxygen in water. Students will know the functions of wetlands and will be able to explain at least one function performed by wetlands. Freshwater Ecosystems by Bivalves. Students will see scientists collect and analyze information about the early years of the zebra mussel invasion in the Hudson River. Students will learn how to design a good investigation and the concept of a fair test. In addition to providing units that include secondary data, these materials also highlight the ecological nature of science by providing lessons that focus on key habits of mind to help students think like an ecologist. Students will know how an invasive species has changed the Hudson River food web and be able to explain the impact of the zebra mussel on the food web over time. Researchers at the Cary Institute set up sample plots on the Cary Institute grounds in Millbrook, NY. 4. • The more chains the more stable the ecosystem. In 2016, a select number of sites began to classify and count each piece of trash they pick up. Using data from the Hudson River Environmental Conditions Observation System (HRECOS) you can look at how primary productivity changes daily and over the growing season. Organisms in food webs are commonly divided into trophic levels. In this module students will learn how land use has changed in the Hudson River watershed, both in geologic history and in more recent times in response to human pressures. Student will compare macroinvertebrate diversity and abiotic conditions in stream riffles and pools. Pace, M.L., D.L. A food chain describes how different organisms eat each other, starting out with a plant and ending with an animal. Abiotic components play an equal role in the food web of an ecosystem along with biotic components. Air pollution from traffic can be a major problem in many parts of the world. Preparing live slides takes some time, although students can help if you have dissecting and compound microscopes. Pollutants biomagnified through the food webs in all catchments studied, in some cases reaching levels sufficient for biological effects on invertebrates, fish and river birds such as … A series of pictures and descriptions identifying common invertebrates found in litter packs. Pace, M.L. This allowed submerged aquatic vegetation to grow at greater depths, become more plentiful, and increase in biomass. The speed of water also varies and is subject to chaotic turbulence. Before they learn the details, have students reassemble their teams and examine the final graph (2005-2009) in the series and answer the first question in Part 3 in their packets. This ecosystem has producers, first-level consumers, second-level consumers, and third-level consumers. A short reading about pollution that causes a change in pH of aquatic systems. Cary Institute of Ecosystem Studies Summary Students participate in a series of activities to learn how an invasive species has changed the Hudson River food web and be able to explain the impact of the introduction of the zebra mussel on the food web. Simplified food-web structure in the Waikato River ecosystem. Invertebrates are an important link in the food web as they convert the energy in plant and other organic matter into protein (their own bodies). Food web studies in the Murray–Darling Basin The riverine-floodplain system Food webs can be considered to be the flow of energy, or carbon, through ecosystems. As a whole class, student teams share information about organism populations, and then use information from classmates, discussion, and a PowerPoint to chart changes in biotic and abiotic factors resulting from the zebra mussel invasion. What organisms seem to specialize in one or two habitats? Does decomposition vary in different places? Fish migrations inject nutrients into Great Lakes tributaries, helping to fertilize river food webs. Lake ecosystem Food Web Angler Legend TC (carnivore) Heron TC (carnivore) Perch SC Tertary Consumer = tc Coot (omnivore) TC (carnivore) Secondary Consumer = sc Minnow SC (carnivore) Primary Consumer = pc Mayfly Laura PC (herbivore) Producer = P Dragonfly nymph SC (carnivore) 1210. The series of lessons that comprise this unit are intended to take students from direct observations of their schoolyard to interpretation of air photographs of their schoolyard. You may want to view the animations students will be viewing during Part 1. Students will know the difference between a pulse and a press event with regards to eutrophication and be able to graph the growth of algae over time. Researchers searched the following substrates within the plots: live trees, dead trees, leaf litter, and rocks. Do large soil organisms (e.g., worms) speed up decomposition? For example in the river a biotic factor can be small frogs, plants, fish anything living in the river. Students will know how to design an experiment to test how a pond ecosystem changes over time due to an invasive mollusk and be able to develop a testable hypothesis, create the experimental set-up, collect data, and carry out the experiment. Explain: Discuss what students have discovered. The nutrients then fertilize the river, providing food for the salmon fry when they emerge. Rankings range from 1 (most vulnerable) to 12 (least vulnerable). A food web describes a number of overlapping food chains and is usually a more accurate description of feeding patterns in an ecosystem. They will learn how differences in land cover type may lead to difference in ecosystem (biological, physical and social) features, and how biological, physical and/or social features of an ecosystem can be inter-related. When people think of ecology, they usually imagine studies out in the country. Microbial productivity was measured for both bacteria and fungi. In this dataset, students can explore how the prevalence of Lyme disease has changed over time in the Northeast. Students will use data to create a scatter plot by hand and be able to understand the importance of replication and the intrinsic link between variability and the conclusions that can be drawn from data. Understanding how human activity influences the Hudson is a prime concern for the maintenance of the river, especially as the human population grows. Through soil testing and map reading, they learn that soil composition varies from site to site depending on the underlying rock type, overlying vegetation, time, topography, climate, and chemicals carried by water percolating through the soil. Students will know how to answer the question, “Are some fish less harmful to eat from the Hudson River than others?” and be able to provide evidence to support their answer. Students gain skills in field work and identification of these critters and have the opportunity to explore and interpret trends in their data as well as data collected by others. The author, Dr. Dave Strayer, is one of the key scientists involved ingoing zebra mussel research. Are these changes permanent, and how will the ecosystem respond? Students brainstorm and share what they already know about wetlands, and sketch a simple tidal marsh diagram with vegetation zones and appropriate organisms. Students evaluate the environmental, political and economic consequences of their actions, and grapple with the difficult nature of making environmentally sound choices. Do different tree species occur along the edge versus the interior of a forest? 303 0 obj
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Cary Institute of Ecosystem Studies Summary Students participate in a series of activities to learn how an invasive species has changed the Hudson River food web and be able to explain the impact of the introduction of the zebra mussel on the food web. Students will know how to map puddles on their school property and investigate what lives in the puddles. When scientists do a 'budget' of a water source, it helps to think of a bank account. Much of my past research has focused on river-floodplain ecosystems in the Pacific Northwest and the importance of these floodplains for fish. Does the amount of precipitation that reaches the ground differ between open field areas and forested areas? Relationships between zebra mussels and unionid clams This will provide information and review about the food webs you will discuss with students. Students will understand variability in the abundance of American eels (Anguilla rostrata) in tributaries of the Hudson River by comparing data from different locations over time. Different student groups become experts on different parts of the dataset. This slide asks students to consider: How do you think this affected other organisms? Food Web In any ecosystem there are many food chains and, generally, most plants and animals are part of several chains. This can also be done while students are rotating through the microscope stations. What factors determine preferences for different seed types? The Food Web in the Hudson. Students will know how to estimate flow in a river or stream, and be able to explain how how Hudson River flow is expected to change as predicted by global climate change models. These resources may be utilized in many ways based on human needs. complex food web Dead salmon aren't so much at the bottom of the food chain as at the center of a complex food web that extends from river bottoms to forests far … The Stream Ecology Unit (YES-Net) enlists students as scientists as they collect data on the numbers and kinds of aquatic insects found in local streams. Students complete their work for GROW by working in groups to create advertisements that teach the public about nutrient cycling, and GROW's research and products. Place orders for prepared slides or live animals in advance. Students collect data about the "seed rain" in the their schoolyard, while also learning to identify trees and seeds in their schoolyard. Students will know how an aquatic ecosystem works and be able to collect representative organisms, identify the organism and its trophic level, and create a food web of a local aquatic ecosystem. River ecosystems are part of larger watershed networks or catchments, where smaller headwater streams drain into mid-size streams, which progressively drain into larger river networks. Data was collected near Kingston, NY. Students learn that soil is a complex mixture of rock, organic material, and water, along with air spaces. Activities, extensions tasks, and a mobile app are Living and nonliving elements of a schoolyard affect each other. 2007. Students will know how the climate of the Hudson Valley has changed over the last glaciation and be able to explain these changes. Review or introduce the term ‘trend’ which is used on the data sheet. Effects of an invasive bivalve on fish in the 325 0 obj
3. Students will learn how and why invasive species have such large ecosystem impacts and how they have changed the Hudson River. Explore: Introduce four habitats that are subsets of the larger Hudson River habitat: marsh, brackish channel, freshwater channel, and fresh water shallows. Food webs illustrate the interconnectedness of organisms within an ecosystem. Is there any correlation between temperature increase and cellular respiration/photosynthesis processes? Extend: Show the video clip “Results” from the American Museum of Natural History. Trophic Groups Of the trophic groups that R. W. Merritt and K. W. Cummins (1978) have identified for aquatic insects, only 5 are likely to be found in a stream using typical collection and sorting methods. Students will know how a stream changes during and after a storm and be able to create and/or interpret graphs demonstrating these changes. The food web structure of the mountain ecosystem involves different components, whether it is biotic or abiotic components. 274 0 obj
Dec 14, 2016 - Explore adam sumner's board "aquatic ecosystem" on Pinterest. Students will know how soil compaction affects water infiltration and will be able to design and carry out a simple experiment to test their ideas. Strayer, D. Fischer, and H.M. Malcolm. Students will analyze historic sea level data, sea level projections, climate projections, coastal flooding projections, and NYC action plans. the Tar-Pamlico River while addressing essential terminology for understanding the interdependence of plants and animals with their ecosystems including food chain, food web, energy pyramid, adaptation, decomposers, producers and consumers. River ecosystems are flowing waters that drain the landscape, and include the biotic interactions amongst plants, animals and micro-organisms, as well as abiotic physical and chemical interactions of its many parts. 2004. A fun outdoor activity demonstrates to the students concepts Each living and non-living part affects others in an ecosystem.