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Backyard Food
Suggested Grades: 2nd - 5th BACKYARD FOOD WEB Wildlife Champions at Home Science Experiment 2-LS4-1: Make observations of plants and animals to compare the diversity of life in different habitats. What is a food web? All living things on earth are either producers, consumers or decomposers. Producers are organisms that create their own food through the process of photosynthesis. Photosynthesis is when a living thing uses sunlight, water and nutrients from the soil to create its food. Most plants are producers. Consumers get their energy by eating other living things. Consumers can be either herbivores (eat only plants – like deer), carnivores (eat only meat – like wolves) or omnivores (eat both plants and meat - like humans!) Decomposers are organisms that get their energy by eating dead plants or animals. After a living thing dies, decomposers will break down the body and turn it into nutritious soil for plants to use. Mushrooms, worms and bacteria are all examples of decomposers. A food web is a picture that shows how energy (food) passes through an ecosystem. The easiest way to build a food web is by starting with the producers. Every ecosystem has plants that make their own food through photosynthesis. These plants are eaten by herbivorous consumers. These herbivores are then hunted by carnivorous consumers. Eventually, these carnivores die of illness or old age and become food for decomposers. As decomposers break down the carnivore’s body, they create delicious nutrients in the soil which plants will use to live and grow! When drawing a food web, it is important to show the flow of energy (food) using arrows. -
Effects of Interactions Between the Green and Brown Food Webs on Ecosystem Functioning Kejun Zou
Effects of interactions between the green and brown food webs on ecosystem functioning Kejun Zou To cite this version: Kejun Zou. Effects of interactions between the green and brown food webs on ecosystem functioning. Ecosystems. Université Pierre et Marie Curie - Paris VI, 2016. English. NNT : 2016PA066266. tel-01445570 HAL Id: tel-01445570 https://tel.archives-ouvertes.fr/tel-01445570 Submitted on 1 Jun 2017 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Université Pierre et Marie Curie Ecole doctorale : 227 Science de la Nature et de l’Homme Laboratoire : Institut d’Ecologie et des Sciences de l’Environnement de Paris Effects of interactions between the green and brown food webs on ecosystem functioning Effets des interactions entre les réseaux vert et brun sur le fonctionnement des ecosystèmes Par Kejun ZOU Thèse de doctorat d’Ecologie Dirigée par Dr. Sébastien BAROT et Dr. Elisa THEBAULT Présentée et soutenue publiquement le 26 septembre 2016 Devant un jury composé de : M. Sebastian Diehl Rapporteur M. José Montoya Rapporteur Mme. Emmanuelle Porcher Examinatrice M. Eric Edeline Examinateur M. Simon Bousocq Examinateur M. Sébastien Barot Directeur de thèse Mme. Elisa Thébault Directrice de thèse 2 Acknowledgements At the end of my thesis I would like to thank all those people who made this thesis possible and an unforgettable experience for me. -
Trophic Levels
Trophic Levels Douglas Wilkin, Ph.D. Jean Brainard, Ph.D. Say Thanks to the Authors Click http://www.ck12.org/saythanks (No sign in required) AUTHORS Douglas Wilkin, Ph.D. To access a customizable version of this book, as well as other Jean Brainard, Ph.D. interactive content, visit www.ck12.org CK-12 Foundation is a non-profit organization with a mission to reduce the cost of textbook materials for the K-12 market both in the U.S. and worldwide. Using an open-content, web-based collaborative model termed the FlexBook®, CK-12 intends to pioneer the generation and distribution of high-quality educational content that will serve both as core text as well as provide an adaptive environment for learning, powered through the FlexBook Platform®. Copyright © 2015 CK-12 Foundation, www.ck12.org The names “CK-12” and “CK12” and associated logos and the terms “FlexBook®” and “FlexBook Platform®” (collectively “CK-12 Marks”) are trademarks and service marks of CK-12 Foundation and are protected by federal, state, and international laws. Any form of reproduction of this book in any format or medium, in whole or in sections must include the referral attribution link http://www.ck12.org/saythanks (placed in a visible location) in addition to the following terms. Except as otherwise noted, all CK-12 Content (including CK-12 Curriculum Material) is made available to Users in accordance with the Creative Commons Attribution-Non-Commercial 3.0 Unported (CC BY-NC 3.0) License (http://creativecommons.org/ licenses/by-nc/3.0/), as amended and updated by Creative Com- mons from time to time (the “CC License”), which is incorporated herein by this reference. -
A Study of Differences in Vertical Phosphorus Profiles Within the Sediments of Selected Florida Lakes As Related to Trophic Dynamics
University of Central Florida STARS Retrospective Theses and Dissertations 1976 A Study of Differences in Vertical Phosphorus Profiles Within the Sediments of Selected Florida Lakes as Related to Trophic Dynamics Edgar Allen Stewart III University of Central Florida, [email protected] Part of the Engineering Commons Find similar works at: https://stars.library.ucf.edu/rtd University of Central Florida Libraries http://library.ucf.edu This Masters Thesis (Open Access) is brought to you for free and open access by STARS. It has been accepted for inclusion in Retrospective Theses and Dissertations by an authorized administrator of STARS. For more information, please contact [email protected]. STARS Citation Stewart, Edgar Allen III, "A Study of Differences in Vertical Phosphorus Profiles Within the Sediments of Selected Florida Lakes as Related to Trophic Dynamics" (1976). Retrospective Theses and Dissertations. 258. https://stars.library.ucf.edu/rtd/258 • A STUDY OF DIFFEREilCES IN VERTICAL PHOSPHORUS PRO FILES WliHIN THE SEDIMENTS OF SELECTED FLORIUA LAKES AS [{ELATED TO °fROPfiiC DYNArHCS BY EDGAR ALLE N STEHART III B.S., University of Florida, 1971 THESIS SubmHted o'n partial fulfiliment of the requirements for the degree of Mdster of Science °in the Graduate Studies Program of the Co 11 eye of Engi neer i ng of Florida Technological University , Or l ando, Florida 1976 • A STUDY OF DIFFERENCES IN VERTICAL PHOSPHOROUS PROFILES WITHIN THE SEDIMENTS OF SELECTED FLORIDA LAKES AS RELATED TO TROPHIC DYNAMICS BY E. ALLEIJ STEWART I II \ ABSTRACT Seve"a 1 Flori da 1akes with different docu'llcnted traphi c sta te indi ces were se lected for sediment analysis . -
Ecological Principles and Function of Natural Ecosystems by Professor Michel RICARD
Intensive Programme on Education for sustainable development in Protected Areas Amfissa, Greece, July 2014 ------------------------------------------------------------------------ Ecological principles and function of natural ecosystems By Professor Michel RICARD Summary 1. Hierarchy of living world 2. What is Ecology 3. The Biosphere - Lithosphere - Hydrosphere - Atmosphere 4. What is an ecosystem - Ecozone - Biome - Ecosystem - Ecological community - Habitat/biotope - Ecotone - Niche 5. Biological classification 6. Ecosystem processes - Radiation: heat, temperature and light - Primary production - Secondary production - Food web and trophic levels - Trophic cascade and ecology flow 7. Population ecology and population dynamics 8. Disturbance and resilience - Human impacts on resilience 9. Nutrient cycle, decomposition and mineralization - Nutrient cycle - Decomposition 10. Ecological amplitude 11. Ecology, environmental influences, biological interactions 12. Biodiversity 13. Environmental degradation - Water resources degradation - Climate change - Nutrient pollution - Eutrophication - Other examples of environmental degradation M. Ricard: Summer courses, Amfissa July 2014 1 1. Hierarchy of living world The larger objective of ecology is to understand the nature of environmental influences on individual organisms, populations, communities and ultimately at the level of the biosphere. If ecologists can achieve an understanding of these relationships, they will be well placed to contribute to the development of systems by which humans -
Food Chains in Woodland Habitats. All Animals Need to Eat Food to Survive
Science Lesson Living Things and their Habitats- Food chains in woodland habitats. Key Learning • A food chain shows the links between different living things and where they get their energy from. • Living things can be classified as producers or consumers according to their place in the food chain. • A predator is an animal that feeds on other animals (its prey). • Animals can be described as carnivores, herbivores or omnivores. All animals need to eat food to survive. • Talk about what you already know about the kind of food different animals eat. • What is the name of an animal that only eats plants? • What is the name of an animal that only eats other animals? • What is the name of an animal that eats both plants and other animals? Watch this clip about birds. What kind of food do they eat? https://www.bbc.co.uk/bitesize/clips/z9nhfg8 Animals can be described as herbivores, carnivores or omnivores. Birds like robins, blue tits and house sparrows have a very varied diet! worms spiders slugs flies mealworms berries Robins, blue tits and house sparrows are omnivores because they eat plants and other animals. Describing a food chain. Watch this clip describing a food chain. https://www.bbc.co.uk/bitesize/clips/zjshfg8 Caterpillar cat magpie Think about these questions as you watch • Where does a food chain start? • Which animals are herbivores? • Which animals are carnivores? A food chain starts with energy from the Sun because plants need the Sun’s light energy to make their own food in their leaves. Plants are eaten by animals. -
BIO 313 ANIMAL ECOLOGY Corrected
NATIONAL OPEN UNIVERSITY OF NIGERIA SCHOOL OF SCIENCE AND TECHNOLOGY COURSE CODE: BIO 314 COURSE TITLE: ANIMAL ECOLOGY 1 BIO 314: ANIMAL ECOLOGY Team Writers: Dr O.A. Olajuyigbe Department of Biology Adeyemi Colledge of Education, P.M.B. 520, Ondo, Ondo State Nigeria. Miss F.C. Olakolu Nigerian Institute for Oceanography and Marine Research, No 3 Wilmot Point Road, Bar-beach Bus-stop, Victoria Island, Lagos, Nigeria. Mrs H.O. Omogoriola Nigerian Institute for Oceanography and Marine Research, No 3 Wilmot Point Road, Bar-beach Bus-stop, Victoria Island, Lagos, Nigeria. EDITOR: Mrs Ajetomobi School of Agricultural Sciences Lagos State Polytechnic Ikorodu, Lagos 2 BIO 313 COURSE GUIDE Introduction Animal Ecology (313) is a first semester course. It is a two credit unit elective course which all students offering Bachelor of Science (BSc) in Biology can take. Animal ecology is an important area of study for scientists. It is the study of animals and how they related to each other as well as their environment. It can also be defined as the scientific study of interactions that determine the distribution and abundance of organisms. Since this is a course in animal ecology, we will focus on animals, which we will define fairly generally as organisms that can move around during some stages of their life and that must feed on other organisms or their products. There are various forms of animal ecology. This includes: • Behavioral ecology, the study of the behavior of the animals with relation to their environment and others • Population ecology, the study of the effects on the population of these animals • Marine ecology is the scientific study of marine-life habitat, populations, and interactions among organisms and the surrounding environment including their abiotic (non-living physical and chemical factors that affect the ability of organisms to survive and reproduce) and biotic factors (living things or the materials that directly or indirectly affect an organism in its environment). -
Artificial Ecological Pyramid Model and Its Application in Autonomous Robot Strategy System
http://www.paper.edu.cn Artificial Ecological Pyramid Model and Its Application in Autonomous Robot Strategy System Xue Fangzheng, Fang Shuai, Xu Xinhe School of Information Science &Engineering Northeastern University Shenyang, PRC [email protected] Abstract—The Artificial ecological pyramid model is because its discovery is enlightened by ecological pyramid proposed to solve complex problems, which is a layered theory in biology. The most difference between AEPM and evolutionary multi-agent system model. The model has three traditional evolutionary and hybrid evolutionary methods is layers. The lowest layer is composed of “stimulation- that the AEPM considers the hierarchy of intelligence. response” agents called base agents. The second layer is Large numbers of agents with different intelligent level composed of combined agents that are combinations of base collect together to form an agent pyramid like an ecological agents. The top layer is composed of advanced agents that pyramid. The elements of traditional evolutionary methods have reasoning capabilities. Agents in all layers must be up are genes that indicate some information. These genes have against the test of environment. Agents on the lowest layer the simplest intelligence, which are on the lowest layer of can only improve their fitness evaluations by evolutional methods, and agents on upper layers can also improve their the pyramid, so traditional evolutionary method can not fitness evaluations by “eating” agents on lower layers. We have advanced intelligence. The evolutionary neural also construct a strategy system based on artificial ecological network system is equal to an intelligent system composed pyramid model to solve the problem of rivalry between of a neural network agent that has some advance autonomous robots. -
The Soil Food Web
THE SOIL FOOD WEB HEALTHY SOIL HEALTHY ENVIRONMENT The Soil Food Web Alan Sundermeier Extension Educator and Program Leader, Wood County Extension, The Ohio State University. Vinayak Shedekar Postdoctural Researcher, The Ohio State University. A healthy soil depends on the interaction of many organisms that make up the soil food web. These organisms live all or part of their life cycle in the soil and are respon- sible for converting energy as one organism consumes another. Source: Soil Biology Primer The phospholipid fatty acid (PLFA) test can be used to measure the activity of the soil food web. The following chart shows that mi-crobial activity peaks in early summer when soil is warm and moisture is adequate. Soil sampling for detecting soil microbes should follow this timetable to better capture soil microbe activity. The soil food web begins with the ener- gy from the sun, which triggers photo- synthesis in plants. Photosynthesis re- sults in plants using the sun’s energy to fix carbon dioxide from the atmosphere. This process creates the carbon and organic compounds contained in plant material. This is the first trophic level. Then begins building of soil organic matter, which contains both long-last- ing humus, and active organic matter. Active organic matter contains readily available energy, which can be used by simple soil organisms in the second trophic level of the soil food web. Source: Soil Biology Primer SOILHEALTH.OSU.EDU THE SOIL FOOD WEB - PAGE 2 The second trophic level contains simple soil organisms, which Agriculture can enhance the soil food web to create more decompose plant material. -
Can More K-Selected Species Be Better Invaders?
Diversity and Distributions, (Diversity Distrib.) (2007) 13, 535–543 Blackwell Publishing Ltd BIODIVERSITY Can more K-selected species be better RESEARCH invaders? A case study of fruit flies in La Réunion Pierre-François Duyck1*, Patrice David2 and Serge Quilici1 1UMR 53 Ӷ Peuplements Végétaux et ABSTRACT Bio-agresseurs en Milieu Tropical ӷ CIRAD Invasive species are often said to be r-selected. However, invaders must sometimes Pôle de Protection des Plantes (3P), 7 chemin de l’IRAT, 97410 St Pierre, La Réunion, France, compete with related resident species. In this case invaders should present combina- 2UMR 5175, CNRS Centre d’Ecologie tions of life-history traits that give them higher competitive ability than residents, Fonctionnelle et Evolutive (CEFE), 1919 route de even at the expense of lower colonization ability. We test this prediction by compar- Mende, 34293 Montpellier Cedex, France ing life-history traits among four fruit fly species, one endemic and three successive invaders, in La Réunion Island. Recent invaders tend to produce fewer, but larger, juveniles, delay the onset but increase the duration of reproduction, survive longer, and senesce more slowly than earlier ones. These traits are associated with higher ranks in a competitive hierarchy established in a previous study. However, the endemic species, now nearly extinct in the island, is inferior to the other three with respect to both competition and colonization traits, violating the trade-off assumption. Our results overall suggest that the key traits for invasion in this system were those that *Correspondence: Pierre-François Duyck, favoured competition rather than colonization. CIRAD 3P, 7, chemin de l’IRAT, 97410, Keywords St Pierre, La Réunion Island, France. -
Determination of Trophic Relationships Within a High Arctic Marine Food Web Using 613C and 615~ Analysis *
MARINE ECOLOGY PROGRESS SERIES Published July 23 Mar. Ecol. Prog. Ser. Determination of trophic relationships within a high Arctic marine food web using 613c and 615~ analysis * Keith A. ~obson'.2, Harold E. welch2 ' Department of Biology. University of Saskatchewan, Saskatoon, Saskatchewan. Canada S7N OWO Department of Fisheries and Oceans, Freshwater Institute, 501 University Crescent, Winnipeg, Manitoba, Canada R3T 2N6 ABSTRACT: We measured stable-carbon (13C/12~)and/or nitrogen (l5N/l4N)isotope ratios in 322 tissue samples (minus lipids) representing 43 species from primary producers through polar bears Ursus maritimus in the Barrow Strait-Lancaster Sound marine food web during July-August, 1988 to 1990. 613C ranged from -21.6 f 0.3%0for particulate organic matter (POM) to -15.0 f 0.7%0for the predatory amphipod Stegocephalus inflatus. 615~was least enriched for POM (5.4 +. O.8%0), most enriched for polar bears (21.1 f 0.6%0), and showed a step-wise enrichment with trophic level of +3.8%0.We used this enrichment value to construct a simple isotopic food-web model to establish trophic relationships within thls marine ecosystem. This model confirms a food web consisting primanly of 5 trophic levels. b13C showed no discernible pattern of enrichment after the first 2 trophic levels, an effect that could not be attributed to differential lipid concentrations in food-web components. Although Arctic cod Boreogadus saida is an important link between primary producers and higher trophic-level vertebrates during late summer, our isotopic model generally predicts closer links between lower trophic-level invertebrates and several species of seabirds and marine mammals than previously established. -
To What Degree Are Philosophy and the Ecological Niche Concept Necessary in the Ecological Theory and Conservation?
EUROPEAN JOURNAL OF ECOLOGY EJE 2017, 3(1): 42-54, doi: 10.1515/eje-2017-0005 To what degree are philosophy and the ecological niche concept necessary in the ecological theory and conservation? Universidade Federal Rogério Parentoni Martins* do Ceará, Programa de Pós-Graduação em Ecologia e Recursos Naturais, Departamento ABSTRACT de Biologia, Centro de Ecology as a field produces philosophical anxiety, largely because it differs in scientific structure from classical Ciências, Brazil physics. The hypothetical deductive models of classical physics are simple and predictive; general ecological *Corresponding author, models are predictably limited, as they refer to complex, multi-causal processes. Inattention to the conceptual E-mail: rpmartins917@ structure of ecology usually imposes difficulties for the application of ecological models. Imprecise descrip- gmail.com tions of ecological niche have obstructed the development of collective definitions, causing confusion in the literature and complicating communication between theoretical ecologists, conservationists and decision and policy-makers. Intense, unprecedented erosion of biodiversity is typical of the Anthropocene, and knowledge of ecology may provide solutions to lessen the intensification of species losses. Concerned philosophers and ecolo- gists have characterised ecological niche theory as less useful in practice; however, some theorists maintain that is has relevant applications for conservation. Species niche modelling, for instance, has gained traction in the literature; however, there are few examples of its successful application. Philosophical analysis of the structure, precision and constraints upon the definition of a ‘niche’ may minimise the anxiety surrounding ecology, poten- tially facilitating communication between policy-makers and scientists within the various ecological subcultures. The results may enhance the success of conservation applications at both small and large scales.