This semester I'm teaching ecology lab for the first time since I've been at LSU. It is usually taken in conjunction with the fourth year ecology lecture course, taught by a number of professors (including my advisor, Jim). As a third or fourth year course, this lab is a bit of a step up in conceptual difficulty for the students, as well as requiring a fair amount of work for the minimal credit it is worth. The students have a high workload, with three full lab reports to write, three other assignments, and five quizzes during the semester (which makes a lot of marking for me to do). Still, it would have to be one of the most fun courses for both students and teachers at LSU, especially if you enjoy being outdoors.
The labs are three hours per week and each week has basically a similar structure with a short introductory lecture/discussion with the students before we head out to the field or work in the lab to collect data of some sort. Almost every week we aim to get out doing some sort of field work, as for most biologists (including myself) this is the best part of the job! So far we have been to cemeteries in Baton Rouge, gone fishing at streams on and off campus, been trekking through a swamp, and we will be measuring food web related data from lakes in Baton Rouge and sampling insects from various fields during the rest of the semester.
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| Seining for minnows at Foster Creek |
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| Golden Silk Spider, or Banana Spider (Nephila clavipes) |
So far we have been to a couple of really cool locations. For a lab on population growth we headed north to Port Hudson, an old civil war battle site now used for reenactments. There we sampled minnows in Foster Creek and used the mark-recapture technique to estimate population size. A really nice natural forest surrounded the creek and there was plenty of wildlife to be found. I saw an eastern diamondback rattlesnake, chipmunks, squirrels and a couple of large banana spiders (
Nephila clavipes), a species of orb-web spider, the largest spider family on the planet along with tarantulas. The females of these species are around the size of a human hand while the males are tiny in comparison.They look scary, but their bite is harmless - it's the small spiders you really have to watch out for!
The other sweet place we have headed to do field work is the Bluebonnet Swamp, a patch of land in the middle of Baton Rouge which has been retained as a swamp park for recreation, containing walking trails and an education center. During two labs there we helped remove the invasive plant species elephant ear (
Colocasia esculenta) from an area of the swamp where it is growing aggressively as part of a community service component of the course. The first week of this lab was made particularly interesting due to a downpour of rain making the swamp a lot more swampy than usual. Some students had more fun than others, with a couple falling into the water thanks to the muddy ground and hidden underwater branches and roots
In the process of passing this course the students get a good footing in a number of topics central to ecology, including population growth, measuring diversity, invasive species, food-web analysis, biogeography, scientific writing, and the all-important use of statistics. It is a really good course, and universities in New Zealand would certainly benefit from including advanced lab courses such as this in their programs, something which is generally lacking. I'm really enjoying the opportunity to teach it, and am looking forward to teaching it for the remainder of my time at LSU.
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| Students removing invasive elephant ear (Colocasia esculenta) in Bluebonnet Swamp |
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| One of my classes for the semester |
