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Johnson, Pieter TJ Professor

Positions

Research Areas research areas

Research

research overview

  • Dr. Johnson’s research focuses on two pervasive and inter-related forms of biological change: disease emergence and species invasions. Both have important consequences for individuals, populations, and for entire ecological communities and ecosystem processes. Invasions and disease also have costly economic and health repercussions for human societies. Dr. Johnson’s lab focuses on developing a dynamic, ecological understanding of disease emergence as a prerequisite for intervention. Recent publications by his group have highlighted how losses of biodiversity can enhance parasite transmission and how nutrient runoff can indirectly drive disease through changes in ecological food webs. These same patterns are evident for both human and wildlife diseases. Currently his research program is directed at three focal areas: (i) the community ecology of disease, (ii) biodiversity loss and infectious disease, (iii) and interactions between invasions and habitat alteration.

keywords

  • disease ecology, invasion biology, community ecology, global change biology, aquatic biology

Publications

selected publications

Teaching

courses taught

  • EBIO 1220 - General Biology 2
    Primary Instructor - Spring 2018 / Spring 2019
    Provides a concentrated introduction to organisms, homeostasis, development, behavior, and ecology. Emphasizes fundamental principles, concepts, facts,and questions. Intended for science majors. Recommended prerequisite: EBIO 1210 (minimum grade C-).
  • EBIO 3010 - Teaching Biology
    Primary Instructor - Spring 2018 / Spring 2019
    Provides an opportunity to assist in teaching of specific lecture or laboratory section in EBIO under direct faculty supervision. Students must first make arrangements with the appropriate faculty member and turn in a form to the EBIO office. May be repeated up to 3 total credit hours.
  • EBIO 4090 - Coral Reef Ecology
    Primary Instructor - Fall 2018 / Fall 2019
    Combines classroom-based instruction in the Fall semester with an international, field-based SCUBA diving expedition to learn about the incredible coral reef ecosystems of the Caribbean (in early January). Students learn about and observe a variety of organisms that make the reef their home. The course covers threats to coral reefs worldwide as well as ongoing efforts aimed at conservation. Recommended prerequisite: any ecology course is a highly recommended. Scuba certification required.
  • EBIO 4410 - Biological Statistics
    Primary Instructor - Fall 2018 / Fall 2019
    Lect. and lab. Offers a demanding, problems-oriented methods course in statistical inference procedures, assumptions, limitations, and applications emphasizing techniques appropriate to realistic biological problems. Includes data file management using interactive computing techniques. Recommended prerequisites: EBIO 1210 and EBIO 1220 and EBIO 1230 and EBIO 1240 (minimum grade C-). Same as EBIO 5410.
  • EBIO 5410 - Biological Statistics
    Primary Instructor - Fall 2018 / Fall 2019
    Lect. and lab. Offers a demanding, problems-oriented methods course in statistical inference procedures, assumptions, limitations, and applications emphasizing techniques appropriate to realistic biological problems. Includes data file management using interactive computing techniques. Same as EBIO 4410.
  • EBIO 5460 - Special Topics
    Primary Instructor - Fall 2018
    Familiarizes students with specialized areas of biology. May be repeated up to 9 total credit hours. Same as EBIO 4460.

Background

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