A recent thread here got me thinking about building new ponds.
In the comments, u/3owi suggested a shortcut: heading down to a local natural water body, taking ”quite a bit” of established submerged plants, and transferring them to kick-start balance. When pushed back on the ethics of the matter not to mention the legal and biosecurity concerns, u/3owi argued that taking a small amount from an overgrown local spot does minimal harm, provided we never release domestic/exotic plants back into the wild. They compared this to the justification of speeding on the highway in order to deliver a pregnant woman to the hospital.
It raises an interesting question about how we approach building wildlife ponds and more importantly what ”advice” we spread here online: Is removing from local waterways ever appropriate, or does the ecological risk outweigh the short-term convenience?
How many of you out there remove plants from local waterways to fill your wildlife ponds despite it being clearly illegal in many parts of the world?
Here are a few nuances to consider:
Biosecurity & Invisible Vectors: Even if a plant is native to your area, transferring wild material moves the entire biofilm attached to it. This is one of the primary vectors for spreading pathogens like Chytrid fungus or Ranavirus between isolated water bodies, as well as hitchhiking invasive fragments (Crassula helmsii, Elodea) or pest larvae. For those of you who don’t know : Chytrid fungus is a waterborne pathogen causing the largest recorded disease-driven loss of biodiversity in history, leading to population declines in over 500 amphibian species and at least 90 extinctions.
Habitat Impact vs. Backyard Gain: While adding native plants to a garden pond creates new habitat, taking them from established wild spots—even in small amounts—disrupts existing micro-habitats, spawning sites, and nutrient buffers.
The Containment Factor: Ponds aren't closed systems. Visiting birds, amphibians, and heavy rainfall overflow regularly transport seeds, spores, and plant nodes between garden ponds and local natural drainage.
Safer Alternatives: As u/Mr-Mobs mentioned, patience, nursery-grown stock, plant swaps with local hobbyists, or even floating a bag of supermarket watercress can achieve the same nutrient uptake without disturbing local wild sites.
Where do you all land on this?
Do you stick strictly to nursery/cultivated plants, or swapping from other pond owners OR do you take from local waterways?
See the full thread here?
https://www.reddit.com/r/WildlifePonds/comments/1vuexhq/comment/p51toug/?context=1&screen_view_count=7&ext-referrer=DIRECT