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Land Based Invasive Species

Below are some common invasive species present or nearby the Reservation. To obtain a comprehensive list of terrestrial invasive species present, or inquiries about a specific location, please contact Resource Management or Kelsey Taylor. Please report any suspected invasive species to Kelsey Taylor at kelseytaylor@fdlrez.com

Species of Concern on the FDL Reservation:

PESTS:

Emerald Ash Borer: Emerald Ash Borer (EAB) is in invasive forest pest which causes the death of ash trees after several years of infestation through interrupting the transport of water and nutrients throughout the tree. EAB is spreading rapidly throughout the United States, with the closest detection to FDL being in Cloquet, MN in 2021. Thus far, no detections have been confirmed within Reservation boundaries, and the invasive species program continues to survey and monitor for potential EAB infestation. While EAB invasion is not preventable, we have developed mitigation strategies to try to lessen the impact and preserve ash. These strategies are in progress of being recorded in an official Ash management plan, which will be made available when completed, but are also available in summary in the document below.For more information about EAB, including identification information, please follow this link: Emerald Ash Borer Program | Minnesota Department of Agriculture (state.mn.us)

EAB Federal Deregulation/FDL Response:In November of 2018 USDA/ APHIS announced plans to deregulate emerald ash borer (EAB) at a federal level which would result in federal quarantines no longer being enforced. Instead federal funding efforts would shift to a focus on education and the release of biocontrol wasps. Fond du Lac submitted a response to APHIS opposing the quarantine removal, and has continued work with the MDA to uphold quarantines in MN, even if it is not regulated at the federal level.  In January 2021, the federal quarantines were officially removed.
EAB Deregulation Response

Spongy (formerly Gypsy) Moth: Spongy moth is a defoliator insect, which feeds on more than 300 species of tree. Adults have been currently documented within the FDL Reservation boundaries, but no mating populations have been discovered. FDL invasive species program partners with, and conducts our own, monitoring for spongy moth populations. Once mating populations are confirmed within the Reservation, we will be able to move forward with a mating disruptor treatment. Unfortunately, since this is a winged pest, there is little that can be done to prevent or control spongy moth once it is in an area. For information regarding the mating disruption treatment, or other potential treatments, please contact Kelsey Taylor. For more information about spongy moth, including identification information, please visit the Minnesota Department of Agriculture’s website: Spongy Moth Brochure (state.mn.us)


PLANTS:

Wild Parsnip: Wild parsnip is one of the most prevalent invasive species within the Reservation. It poses a risk to human health as it can result in chemical burns when the sap gets on skin and is exposed to the sun. It is important if you feel you have come into contact with wild parsnip to wash with soap and water as soon as possible and stay out of the sun. If severe burns develop seek medical attention. Never burn wild parsnip as the vapors if inhaled can cause severe internal burns. Wild parsnip on the FDL Reservation is mainly found in right-of-way’s and on roadsides. It is a tall plant with an upward facing clump of yellow flowers. If you are ever unsure of identification, it is best to avoid unknown plants. If harvested in its first year, the wild parsnip tap root is edible. For information on how to identify wild parsnip, please visit the Minnesota Department of Agriculture’s website: Wild Parsnip | Minnesota Department of Agriculture (state.mn.us)

Common Tansy: Common tansy is very common on the Reservation and also has a yellow flower and is a tall plant. Though it can be a skin irritant, it will not cause burns like the wild parsnip. Tansy can be detrimental to the environment through its persistence and tendency to overtake areas. Women who are pregnant should take care to avoid common tansy as it is an abortive. Tansy, if ingested in large amounts, including as a tincture or tea, can be toxic. For more information, including identification, please visit the Minnesota Department of Agriculture’s website: Common Tansy | Minnesota Department of Agriculture (state.mn.us)

Spotted Knapweed: Spotted Knapweed is an herbaceous invasive plant that has purple flowers. It can be a skin irritant, and moves into sandy disturbed soils, such as gravel pits or construction areas, very quickly. It can easily overtake native pollinator species in these types of areas. For more information, including identification, please visit the Minnesota Department of Agriculture’s website: Spotted Knapweed | Minnesota Department of Agriculture (state.mn.us)

Japanese Knotweed: Japanese knotweed is a woody species that is extremely difficult to control once in an area. The stems of this plant look similar to bamboo. This plant has the potential to break through home foundations, making it extremely hazardous in populated areas. Its root system can reach up to 50 feet underground, and it is resistant to most types of management, making it extremely important to detect and control this plant early. For more information, including identification, please visit the Minnesota Department of Agriculture’s website: Japanese Knotweed | Minnesota Department of Agriculture (state.mn.us)


PREVENT THE SPREAD:

The best way to manage invasive species is to prevent their spread. Below are some helpful sites and tips to decontaminate yourself and equipment when participating in outside activities.

Play, Clean, Go: Play Clean Go is an initiative to help stop the spread of terrestrial invasive species. It focuses on REMOVE, CLEAN, STAY, and USE CERTIFIED ideals to prevent the spread of invasive species.

  • REMOVE plants, animals and mud from boots, gear, pets, and vehicle.
  • CLEAN your gear before entering and leaving the recreation site.
  • STAY on designated roads and trails.
  • USE CERTIFIED or local firewood and hay.

For more information on Play, Clean, Go and/ or to get helpful materials to prevent the spread of invasive species, visit their website at: PlayCleanGo

Decon 101: Below is a snapshot version of what you can do to decontaminate your terrestrial (and aquatic) equipment and prevent the spread of invasive species.
Decon 101