Giant salvinia,Salvinia molesta. A serious exotic,invasive pest species now widespread throughout the warmer regions of the US. It is a rootless,floating fern that can block sunlight and reduce dissolved oxygen levels. The roots are in reality modified leaves. Listed as a Federal Noxious Weed under the Plant Protection Act,which makes it illegal in the U.S. to import or transport between states without a permit. Photo Caddo Lake,TX | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Nature's Images, |
Bildgröße: | 4146 px × 2775 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
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