Water thieves are afoot. They sneak in from foreign lands while our heads are turned, multiply their numbers to create trouble-making gangs, and refuse to leave. Who are these villains? Invasive plants – out of place, out of control, and gobbling up resources, including our most precious one, water.
By definition, an invasive species is “a species that is non-native to the ecosystem under consideration and whose introduction causes or is likely to cause economic or environmental harm or harm to human health.” (U.S. Department of the Interior, Federal Invasive Species Advisory Committee) Invasives lack the natural controls that exist in their own native habitat. As a result, they’re usually fast-growing and rapid reproducers. These bad guys alter the forest in a variety of ways including sucking up A LOT of water.
Because of their heavy water consumption and their prevalence, many are concerned that might actually dry out our forests. Is the problem really that bad? According to the 2005 Millennium Ecosystem Assessment Report, “invasive species are altering large portions of the earth’s terrestrial surface and are considered one of the ‘most important drivers of change in ecosystems.'” Although billions of dollars are being spent to battle invasives in the U.S., the report also predicted rapidly increasing negative effects in the future such as loss of soil health as these water thieves drain up to 250% more moisture than our native vegetation.
That battle against invasives is fought locally as The Woodlands Township crews and contractors spend about 200 days a year on vine and invasives removal and control. And for the past three years, volunteer invasives removal task force has joined the fray, with much success. During 2020 alone, nearly 100 volunteers spent 1020 hours removing three dump-truck loads of invasive vines, shrubs, and trees from along our pathways. Their participation freed up the Township’s contractors to work on larger areas of infestation.
Some of the worst crimes of bad guy invasives?
Disrupting ecosystem interactions and functions
Displacing native species and destroying habitat
Using 50% to more than 250% more water than natives
Let’s turn the tables and gang up on these water thieves invading our forest! To start, each of us can examine our own landscapes and kick out the bad guys, replacing them with natives that better serve us. Then help restore the health of forest soils by volunteering to remove invasives from our pathways and green spaces. If you’re ready to join the Task Force, sign up HERE.
For more information, contact Environmental Services at firstname.lastname@example.org or call 281-210-2058.
Learn more about invasives from these past articles: