South Branch Preserve Update One - Invasive Species Removal

In New Jersey as well as the rest of the United States the influx of non-native plants & invasive non-native plants has significantly increased in the past two centuries. Non-native plants are plants that were not originally found in the United States but are now established here. Most of these plants arrived here by airborne pollen, machinery, animals, humans, or other means; often originating from Europe or Asia.

Of the hundreds of non-native plants there are close to 200 invasive non-native plants in New Jersey alone. These invasive non-native plants are very aggressive in their colonization and since they have no natural insect enemies will spread quickly and profusely. When ignored, these plants will aggressively spread throughout large areas and will dominate over the native species reducing their populations. Efforts have been made to help reduce the impact that these plants have on the native flora and fauna.

We have found many of these plants at our restoration site in Mount Olive. Due to the high diversity of native plant species at this site it is very important to reduce the invasive plant population. A thorough mapping of these non-native invasive plants was performed by plant expert Michael VanClef from Ecological Solutions, LLC.

On May 31st plans were made to start the eradication of some of these plants before they spread throughout the preserve. Mike VanClef, three Land Conservancy of NJ interns and Stewardship Manager Dennis Briede went to the site and selectively applied an herbicide designed to eliminate these plants. Since then they have eliminated two of the species, Japanese Aurelia & Chinese silvergrass & reduced the Japanese barberry, ailanthus, mugwort, winged euonymus & autumn olive from some of the areas.



Keep an eye out for invasive non-native plants in your yard:



Japanese barberry,

autumn olive,

multiflora rose,

phragmites,

Chinese silvergrass,

and Japanese Aurelia

These plants, along with many others have spread throughout many parts of New Jersey as well as other areas of the United States.

see the website below for more information, on how to identify them and their native look-alikes:
http://www.nybg.org/files/scientists/rnaczi/Mistaken_Identity_Final.pdf