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    Leslie/Lefkovitch Matrix Models for Age or Stage-structured Populations
    This Excel workbook uses the Leslie matrix model for population projection of age-class structured populations, and also allows Lefkovitch matrix models for stage-class structured populations.

    Keywords: survivalpopulation ecologyfecundityLeslie matrixeigenvalueseigenvectorsLefkovitch matrixage-class structured populationsstage-class structured populationsreproductive value

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    Using Structured Decision Making to Explore Complex Environmental Issues
    Environmental issues are inherently complex, often requiring multiple interested parties to come together before agreeing on a solution. Structured decision making is a tool used by federal and...

    Keywords: interdisciplinarysocio-ecological systemsscience policystakeholderstructured decision making

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    2006-Cooke-Elderkin-Huang-Predator-Prey interactions with delays due to juvenile maturation
    This paper focuses on predator-prey models with juvenile/mature class structure for each of the predator and prey populations in turn, further classified by whether juvenile or mature individuals...

    Keywords: predator-preyhost-parasitebifurcationage structrematuration delay

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    Population Ecology of the Northern Spotted Owl
    The mathematical modeling of populations utilizing field-collected demographic data is an important component of lab curricula in a variety of undergraduate biology lab courses. During the global...

    Keywords: demographyCommunity Ecologypopulation ecologyconservation biologylife tables

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    Structuring Courses for Equity
    As instructors, we continually look for new ways to create equitable learning environments and support learning for all students in our courses. Recently, we have explored ways that we can increase...

    Keywords: Equitymetacognitioninclusivitycourse structure

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    2001-Noymer-The transmission and Persistence of Urban Legends-Sociological Application of Age-Structures Epidemic Models
    This paper describes two related epidemic models of rumor transmission in an age-structured population. Rumors share with communicable disease certain basic aspects, which means that formal models...

    Keywords: age structurerumorspersistenceUrban Legends

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    Evaluating Local Adaptation and Conservation with Life Tables
    This module contains a sequence of activities designed for an undergraduate ecology lesson on stage-structured population models or life tables that use published data. Two versions are provided:...

    Keywords: ecologypopulation modelmatrix modelsclimate changelife cyclessensitivity analysispopulation ecologylife tablestage-structured modelsnet reproductive rateconservation planning

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    A first lesson in mathematical modeling for biologists: Rocs
    Using a fictitious population of Rocs, a mythical species of giant raptor, students accomplish two broad objectives: 1) they undertake the process of building a first mathematical model of a...

    Keywords: population ecologypopulation modelingdiscrete generationpopulation management

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    Squirrels in Space: Using Radio Telemetry to Explore the Space Use and Movement of Sciurid Rodents
    Biotelemetry is used by researchers to track the interactions of animals with each other and the environment. While advancing technology has led to the development of numerous biotelemetry tools,...

    Keywords: DispersalHabitat selectionHome rangeSquirrel-Net

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    Evaluating Representation in Science Through a Peer-Reviewed Research Study
    The demographic representation of scientists featured in biology curricular materials do not match that of the undergraduate biology student population or of the U.S. population. In this lesson, we...

    Keywords: societyRepresentationSTEM equity

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    Investigating the Ecology of West Nile Virus in the United States
    TIEE Module- How do biotic and abiotic environmental factors explain the historic, present, and future prevalence and range of West Nile Virus (WNV) in the US?
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    Authentic Ecological Inquiries Using BearCam Archives
    Learning through authentic scientific inquiries is essential for understanding the nature and process of science and for developing critical thinking and communication skills. It is logistically...

    Keywords: behaviorinterspecific interactionsPeer reviewauthentic inquiryintra-specific interactions

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    What is Speciation, How Does It Occur, and Why Is It Important for Conservation?
    Speciation provides a framework for classifying biodiversity on Earth and is a central concept in evolutionary biology. To help undergraduate students learn about speciation, we designed a...

    Keywords: EvolutionconservationGenetic DriftSpeciationNatural SelectionBiological species conceptgene flowMorphological species conceptPhylogenetic species concept

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    Where Does Elsie's Hair Color Come From? A "De-Simplified" Pedigree Lesson
    Pedigree analysis is part of most Genetics curricula, but the examples traditionally used in genetics courses present phenotypes as if they were entirely and inexorably defined by genotype. This...

    Keywords: pedigreeMultifactorialphenotypic variationpenetranceexpressivityquantitative variation

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    2013-Gonzalez_Parra-Arenas-Mathematical Model for Social Security Systems with Dynamical Systems
    In this paper it is proposed a mathematical approach based on dynamic systems to study the effect of the increase in the Social Security normal retirement age on the worker and on the dynamics of...

    Keywords: dynamical systemsretirement modelSocial Security

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    Allele and Phenotype Frequencies in Rock Pocket Mouse Populations
    A lesson that uses real rock pocket mouse data collected by Dr. Michael Nachman and his colleagues to illustrate the Hardy-Weinberg principle.

    Keywords: EvolutionResources @ HHMI - BioInteractiveNatural SelectionScientific ProcessStatistics and Mathevolution of populations

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    Statistics with epidemiology of COVID-19
    Introduction into heat maps, non-parametric t-test and GIF (optional) in R using an original dataset on COVID-19 infections from different counties of New Jersey, USA. Suitable for students who...

    Keywords: Rundergraduate educationheat mapsCOVID19coronavirusSARS-CoV-2GIF

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    Visits to the writing center and office hours provide students structured reflection and low-stakes feedback on scientific writing in an Introductory Biology course
    Effective written communication of scientific concepts is a critical, but difficult skill for undergraduate STEM majors to acquire. Oftentimes, the grades of lab reports are negatively impacted by...

    Keywords: scientific writingwater qualityanalysis of results

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    An introduction to population matrix models: a swirl lesson
    Students will learn how to set up a population matrix model in R and use it for demographic analysis of a population, including projecting population growth, determining lambda and the stable age...

    Keywords: population dynamicsRpopulation growthonlinedemographypopulation projection modelquantitative biologypopulation modelmatrix modelspopulation ecologyage structurepopulation biologypopulation modelingSwirlDemographic processespopulationLeslie matrix

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    1-136-MarriageAge-ModelingScenario
    Students will build and analyze a model of the fraction of people who are married (for the first time) by a certain age. Students are asked to set up and solve these differential equations. They...

    Keywords: messagesmarriageusing social sciences in forecastingdirected

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