Response of soil phosphorus fractions and bioavailability to native aquatic vegetation restoration in different types of degraded lakeside wetlands.
Yan Z, Wang Q, Li D, Huang J, Wang L
Native Plants
If you've ever tried to restore a weedy pond edge or replant a disturbed shoreline, this research explains why the same native plants can either rescue or further deplete your soil nutrients depending on what degraded it in the first place.
Scientists tested whether planting native water plants could fix the nutrient problems in two different types of damaged wetlands — one that was bare and depleted, and one taken over by an invasive weed. In the bare areas, native plants brought phosphorus — a key plant nutrient — back to life in the soil. But in the invaded areas, removing the invasive plant and replacing it with natives actually reduced available phosphorus, because the invader had been pumping out soil enzymes that released it. The key lesson: the same restoration action can have opposite effects depending on how the land was originally damaged.
Key Findings
Native plant restoration in barren degraded wetlands increased bioavailable soil phosphorus by 39.57%, driven by lower soil pH and higher acid phosphatase enzyme activity.
In wetlands invaded by parrot feather (Myriophyllum aquaticum), replacing the invader with native plants decreased bioavailable phosphorus by 31.96%, due to loss of microbial biomass and enzymes the invader sustained.
Labile inorganic phosphorus was the soil phosphorus fraction most significantly altered by restoration treatments across both wetland types.
chevron_right Technical Summary
A one-year wetland experiment found that replanting native aquatic plants in degraded lakeside areas boosted soil phosphorus availability by nearly 40% in barren zones, but reduced it by 32% in areas overrun by an invasive plant — showing that restoration outcomes depend heavily on what kind of damage was done first.
Abstract Preview
Phosphorus (P) fundamentally limits productivity and drives eutrophication in lakeside wetlands, yet these P-sensitive ecosystems are increasingly threatened by native vegetation degradation and ex...
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Myriophyllum aquaticum is a flowering plant, a vascular dicot, commonly called parrot's-feather and parrot feather watermilfoil.