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    2006-Shigui_Ruan-Delay differential equations in single species dynamics
    In this survey, we shall review various delay differential equations models arising from studying single species dynamics.

    Keywords: allee_effectdelayed biological systemsfood limitperiodiciityrecruitment modelRegulation of Haematopoiesis

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    A Lesson on Matter and Energy at the Organismal Scale: Linking Patterns and Processes Across Diverse Taxa
    Pathways and transformations of energy and matter (PTEM) are a conceptually challenging but essential component of biological literacy. Curricular gaps about PTEM nevertheless remain; although...

    Keywords: plantsenergyAnimalsfungimatterorganismal scale

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    1-005-NavigatingNumericalMethods-TechniqueNarrative
    This technique narrative is a discovery-based approach to learning the basics of numerical methods for first order differential equations, by following the graphical and analytical perspectives of...

    Keywords: Euler's methodTaylor's Methodsearch and rescueCoaast Guardlost at sealongitudelatitudelimit definition

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    Parasites -- They're what's for dinner: Investigating the role of parasites in aquatic food webs
    Use a well-resolved food web database from a freshwater wetland ecosystem in central California to explore how parasites influence community properties and learn how food webs are constructed and...

    Keywords: Resources @ ESA - TIEEparasitismDisease ecologyfmnDIGfood web ecologywetland communitiescomplex life cyclesnetwork modelingintroductory ecology

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    6-068-VisualizingPredator-PreyCycles
    In this modeling scenario, we propose a gentle introduction to limit cycles using nullcline analysis and a spreadsheet graphical approach via the fourth-order Runge-Kutta method. We will be...

    Keywords: nullclinespredator-preyGeometrypredatorRunge-Kuttapreylimit cycle

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    The Challenge of Food
    How will we feed the estimated 9 billion people that will be on the planet by 2050? How can food be distributed equally? We’ll hear about making more nutritious food via genetic engineering and...

    Keywords: videosScience ForwardfoodGMOs

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    Optimal Foraging Theory
    This module introduces the optimal foraging strategy in the context of understanding competition and coexistence among species. It is intended for an introductory biology audience.

    Keywords: ecologyforagingoptimal foragingInequalities

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    javaFOODWEB
    More than 100 food web matrices (multiple predators/prey Excel worksheets) are included with the javaFOODWEB tool.

    Keywords: niche spacesCommunity Ecologyfood webspredator-prey interactionsMatricestrophic chain

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    Two-Species Model
    These two Excel worksheets simulate the population growth of two interacting species. In isolation, each species grows logistically, but interaction effects between species may limit or enhance...

    Keywords: population growthcompetition modelsLotka-Volterra

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    Bioinformatics: Food Detective – a Practical Guide
    This Practical Guide in the Bringing Bioinformatics into the Classroom series introduces the idea of computers as tools to help understand aspects of biology.
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    Type I Functional Response
    This module introduces the type I functional response in the context of understanding the relationship between an individual's rate of consumption and food density. It is intended for an...

    Keywords: ecologylinear equationsfood density

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    Food Chain Dynamics In A Simple Ecosystem
    In this lab, students will work with a simple algae/brine shrimp environment to learn about food chains and population dynamics.

    Keywords: ecologyecosystemsfood chainalgae

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    Food Chain Dynamics In A Simple Ecosystem
    In this lab, students will work with a simple algae/brine shrimp environment to learn about food chains and population dynamics.

    Keywords: ecologyecosystemsfood chain

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    My Fish Tank: An Active Learning Activity for Bacterial Nitrogen Metabolism
    This active learning activity introduces students to the second part of the nitrogen cycle, nitrification. In terrestrial and aquatic environments, bacteria from the Nitrosomonas and Nitrobacter...

    Keywords: nitrogen cyclenitrificationnitrifying bacteria

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    3-004-VanderPol-ModelingScenario
    This paper presents an electronic spreadsheet model of the Van der Pol oscillator, a well-known nonlinear second-order ordinary differential equation.

    Keywords: phase planeVan der Pol oscillatorlimit cycleRunge-Kutta methodLienard equation

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    Transpiration
    In this lab, students will examine differences between varieties of tomato plants in their transpiration rates.

    Keywords: plant physiologybotanylaboratoryResource Typetranspirationtomatofood security

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    Exploring Detritus-Based Food Webs in Streams
    This two-part field lesson for mid- to upper-level undergraduates connects allochthonous inputs to the invertebrate consumers that depend on them. After preparing students with background...

    Keywords: aquatic macroinvertebratesfunctional feeding groupallochthonousorganic matterleaf packRiver Field Studies Network

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    Food Chain Dynamics In A Simple Ecosystem
    In this lab, students will work with a simple algae/brine shrimp environment to learn about food chains and population dynamics. It was implemented with limited alteration for an Introductory...

    Keywords: ecologyecosystemsfood chain

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    Food Chain Dynamics In A Simple Ecosystem
    In this lab, students will construct simple experiments with algae and brine shrimp to learn about food chains and population dynamics.

    Keywords: ecologyecosystemsfood chainalgaebrine shrimp

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    Nature’s Flying Machines: The Evolutionary Relationship of Avian Form & Function
    In this series of activities, birds will be used as the model organism. The modules examine the connections between body form and function over time by investigating the relationship between avian...

    Keywords: evolutionary ecologyCommunity Ecology

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