
So my internship is about studying a plant that isn’t natural to the refuge. Its called the mile-a-minute weed, rightly so due to its growth rate. My job is to study the effects of a bug called a weevil on the growth rate of the weed. This plant is called an invasive species because it an import from a different location that takes root in an environment and stunts and sometimes even stops the growth of native plants by occupying their land.
It was a while before I understood how damaging a plant could be. I mean if its green its good, it doesn’t really matter what kind of plant is growing, right? Wrong. Although the invasive plant is still capable of providing oxygen and reducing the amount of carbon dioxide in the environment by reducing the natural plants it reduces the natural habitat; this in turn makes it harder to inhabit for the creatures who live in that habitat.
These native plants are not just oxygen providers and air filters; they provide food, shelter, and sometimes even camouflage for the native creatures, so it is necessary that they be maintained and that invasive species be removed.
The use of the weevil is another very important aspect of the internship. Invasive plants are kept in check by various methods; herbicides, mowing, and controlled burnings are the most common ways to reduce invasive species growth. The problem with current methods is that they can be just as damaging to native plants and with controlled burning they can sometimes get out of control and become a hazard to near by neighborhoods. There was a controlled burn conducted in Georgia that got out of control and it left the city in a blanket of smoke for about two days. A mishap like this makes the development of biological controls important.
A biological control is an agent such as a bacteria, bug, animal, or any other natural agent used to control an invasive species. These controls can be the most beneficial way to stop invasive growth. They are chosen based on their ability to specifically target the invasive growth while doing minimal to no harm to native plants. The result is an environment that allows for the natural plants to regain control of their habitat. As well, the population of the control reduces with the reduction in invasive plant preventing the control from getting out of control. Biological controls do come with risks; if not properly researched biological controls can be the most dangerous. Most biological controls for foreign plants are foreign themselves. If the control is attracted to more than the invasive plant it could remove both invasive and native plants and in effect the biological control will become an invasive species with no source of control or containment. I will be researching the effectiveness of this biological control and moreover its effect on native species.