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This collection contains recordings of the course Zoology and Environmental Studies 315: Limnology–Conservation of Natural Resources from the Fall 1999 Semester, taught by John Magnuson and Tom Frost.
| Title | Description | Creator | Date | Length | Type |
| Introductory Lecture | John Magnuson, Professor of Zoology and Director of the Center for Limnology, introduces the course and the topic of Limnology in general, giving several definitions of the field. Demonstrates the webpage for the course and goes over the structure of the course having multiple lecturers. Gives a general history of the study of limnology and its development, with a focus on limnology in Wisconsin. Talks about human impact on bodies of water including agriculture, dams, and invasive species. | Hanson, Paul | 1999-09-02 | 0:49:21 | Video |
| Origin and Morphometry: Lakes and Drainages | John Magnuson gives a lecture on the processes of how lakes are formed and change over time. Particular focus is given to glacial lakes. Goes over lake morphometry, or the physical description of lakes, and introduces the idea of this being related to lake physics, chemistry, and biology. | Hanson, Paul | 1999-09-07 | 0:45:27 | Video |
| Light, Heat, Water Color | John Magnuson begins lecture by going more into the water budget concept introduced at the end of the previous class. The main body of the lecture is the effect of heat and light on aquatic ecosystems. Includes some discussion of the physics of light. Goes on to discuss water color and the heat and light physics of that as well. | Hanson, Paul | 1999-09-09 | 0:49:42 | Video |
| Lake Stratification and Mixing | Tom Frost, Associate Director of the Center for Limnology and in charge of Trout Lake Station, gives his first lecture of the course. The lecture begins with some of the math on how light diminishes by depth in a lake. Then moves into a discussion of lake temperature as related to depth and how temperature stratifies and mixes in lakes, and how they sometimes don’t. | Hanson, Paul | 1999-09-14 | 0:49:58 | Video |
| Overview on Lake Chemistry | Tom Frost gives a lecture on lake chemistry. Begins with an overview of relevant units and solubility. Moves into discussions of limiting elements, oligotrophic vs eutrophic lakes, methods of measuring amounts of compounds in water, effect of salinity on number of species, the most common ions that are found in bodies of water and their distribution in different parts of the world | Hanson, Paul | 1999-09-16 | 0:49:49 | Video |
| Water Movement and Water Budget | John Magnuson lectures on the movement of water in lakes. Begins with talking about different kinds of waves, both on and underneath the surface. Recording ends before lecture is over. | Hanson, Paul | 1999-09-21 | 0:32:28 | Video |
| Oxygen | Tom Frost lectures on oxygen in lakes, where it comes from, and its effect on lake ecology. Discusses factors that impact the solubility of oxygen in water, the distribution of oxygen by depth and how it can change, the effect of organic material. | Hanson, Paul | 1999-09-23 | 0:49:59 | Video |
| Phosphorus | John Magnuson begins class with some housekeeping before posing an exam-type question comparing two lakes that the students then spend the next several minutes discussing amongst themselves. Magnuson then moves on to discussing phosphorus and their effect on lake ecology and discusses “chemical budget,” similar to the water budget idea introduced earlier with various inflows and outflows. Discusses phosphorus interactions with other chemcials such as sulfur and iron oxides. Recording ends with 10 minutes of static. | Hanson, Paul | 1999-09-28 | 1:00:00 | Video |
| Nitrogen/Respiration Seston | Begins class with a question again, this time on the recent development of algae on Lake Mendota. John Magnuson lectures on nitrogen and its effect on lakes and their ecology. Discusses the nitrogen cycle and different processes that form it. Looks at the vertical distribution of nitrogen in lakes and how it can change over time and between oligotrophic and eutrophic lakes, as well as hypoxia in bodies of water. | Hanson, Paul | 1999-09-30 | 0:50:23 | Video |
| pH and Acid Neutralizing Capacity | Tom Frost lectures on water pH and how it is calculated. Also discusses various way that water in lakes becomes more or less acidic from various environmental factors, including some human-caused ones. | Hanson, Paul | 1999-10-05 | 0:48:43 | Video |
| Phytoplankton | Tom Frost lectures on phytoplankton. He goes over different types of phytoplankton, mainly those found in lakes, and discusses their traits and behavior. Also talks about how they interact with and are affected by water chemistry. | Hanson, Paul | 1999-10-12 | 0:49:56 | Video |
| Benthos | Tom Frost lectures on benthos, or life found on the floor of bodies of water. Begins with a brief overview of food web categories: primary producers, primary consumers, secondary consumers, decomposers. Moves into a discussion of the role that benthos play in aquatic ecosystems. | Hanson, Paul | 1999-10-19 | 0:46:17 | Video |
| Zooplankton | Tom Frost lectures on zooplankton. Discusses predator versus herbivore zooplankton, the typical zooplankton lifecycle, and several different common types of zooplankton and their distinctive traits. Dsicusses the different types of environments that different types of zooplankton are found in. | Hanson, Paul | 1999-10-21 | 0:52:42 | Video |
| Fishes | John Magnuson lectures on fishes, major taxonomical classes and orders of fishes, the typical lifecycle of fishes, fish migration, the intersection of fishes with the study of limnology, reproductive guilds (or different egg-laying strategies), and human interaction with fish. | Hanson, Paul | 1999-10-26 | 0:49:08 | Video |
| Aquatic Macrophytes | Karen A. Wilson, TA for the course and a graduate student working on phd in the department of Zoology researching at Trout Lake Station, lectures on aquatic systems and their interaction with the landscape around them. Dsicusses different aquatic plants, including floating plants, different reproductive strategies of aquatic plants, dispersal methods, ecosystem effects, particularly on water clarity and the effect of lake plant cover on fish populations. | Hanson, Paul | 1999-10-28 | 0:48:58 | Video |
| Primary Production | Tom Frost lectures on primary production. Discusses the organisms involved in primary production in lakes and differences in how the process works in different lakes due to factors like water chemistry and the species present. | Hanson, Paul | 1999-11-02 | 0:49:59 | Video |
| Bacteria, Bacterial Processes, and Biogeochemistry | Tom Frost lectures on bacteria and their roles in aquatic ecosystems and water chemistry. Discussion focuses on the role bacteria plays in water chemistry in different in environments. Includes discussion of a whole lake experiment done in Canada on acidic sulfur and phosphrous in lakes and how microorganisms can reduce levels of those chemcials via chemosynthesis. | Hanson, Paul | 1999-11-04 | 0:50:05 | Video |
| Paleolimnology | Tom Frost lectures on paleolimnology. Begins by discussing bog lakes and how they can create good conditions for preserving biological material. Goes on to discuss various paleolimnology techniques, including for determining ages of remains and how many species were present in a certain time range. Class ends with a period for students to ask questions on coursework and content from the course. | Hanson, Paul | 1999-11-09 | 0:49:55 | Video |
| Landscape View of Aquatic Systems | John Magnuson lectures on aquatic systems and how they interact with their broader environement. Begins discussion talking about Lake Wingra and how it is affected by its urban environment. Moves on to talking about lake district lakes, landscape position and its effect on hydrology, primarily using Vilas County lakes for examples. Discusses how people relate to various lake characteristics, the concept of coherence in how lakes behave, and external and internal drivers of lake dynamics | Hanson, Paul | 1999-11-11 | 0:48:50 | Video |
| Landscape View of Aquatic Systems 2 | Roughly the first 23 minutes are John Magnuson continuing his lecture from the previous class on taking a landscape view of aquatic ecosystems. Spends the rest of class going over an assignment on collecting data from various points around Lake Wingra. | Hanson, Paul | 1999-11-16 | 0:52:06 | Video |
| Invasive Species | John Magnuson lectures on invasive species in lakes. Discusses the various impacts of invasive species, including how they impact their new environments and the impact they have on existing species, and how invasions happen. Goes over a couple examples of specific invasive species, zebra mussels and rusty crayfish. | Hanson, Paul | 1999-11-18 | 0:50:32 | Video |
| Lake Wingra Data Collection Assignment | Video does not cover the entire class period. In the part in the video, John Magnuson discusses the results of the Lake Wingra data-collecting assignment, particularly the differences between spring water and storm-drain water. | Hanson, Paul | 1999-11-23 | 0:36:34 | Video |
| Eutrophication and the Management of Lakes within their Watersheds | Video does not cover the entire class period. Guest lecturer Richard (Dick) Lathrop of the Wisconsin Department of Natural Resources and a recent UW-Madison CFL PhD student talks about eutrophication and watersheds, and the impact of agricultural role on eutrophication. Video ends a couple of mintues into his lecture. | Hanson, Paul | 1999-11-30 | 0:50:18 | Video |
| Persistent Toxic Chemicals | Guest speaker Jeff Schell, a graduate student with the CFL, lectures on persistent toxic chemcials. Begins by discussing naturally occurring toxic chemicals. Briefly discusses a few common toxic chemcials and their sources, Goes over definitions of toxicity, the concept of innate toxicity, and what makes a chemical persistent. Does a demonstration of a chemical’s partition coefficient, or how much a toxic chemical will accumulate or not over time. Discusses Mercury, its effects on animals, and how it enters and interacts with the environment. Final ten minutes of the video are blank. | Hanson, Paul | 1999-12-02 | 1:00:00 | Video |
| Acid Rain | Tom Frost lectures on acid rain. Goes over what acid rain means. Discussses sulfuric and nitric acids, their sources, and how those chemicals create acid rain, as well as the impact on lakes in Wisconsin. Talks about the Little Rock Lake acidification experiment meant to model the long-term effects of acid rain on a lake in a sped-up timeline. | Hanson, Paul | 1999-12-07 | 0:50:00 | Video |
| Global Geography of Lakes | Tom Frost begins class by finishing the discussion of the Little Rock Lake experiment from the previous class. Goes on to lecture about taking a more global view of lakes. Discusses the worldwide distribution of lakes and the different ways of forming them, the vast majority being formed by glacial processes, and some of the notable “lake districts” of the world | Hanson, Paul | 1999-12-09 | 0:48:56 | Video |
| Global Change and the Future: Goals and Policy | John Magnuson talks about global warming, the effects it has on lakes, like reduction in the longevity of ice cover, increased unpredictability in the behavior of freshwater systems, migration of species, loss of water supply and lowering of water levels, increased light penetration, and changes in fish habitats. | Hanson, Paul | 1999-12-14 | 0:54:05 | Video |