It seems like there might be a typo in your question. If you're referring to "jetty," yes, jetties can have an impact on local ecosystems, including plant growth.
A jetty is a structure that projects from the land out into the water, often built to protect a harbor or shoreline. The construction of a jetty can alter water flow, sediment deposition, and light penetration, which can subsequently affect the types of vegetation that can grow nearby.
In some cases, jetties can create new habitats for certain types of plants, such as salt-tolerant species in coastal areas. However, they can also disrupt natural processes and lead to erosion or changes in sedimentation patterns that may negatively impact existing plant communities.
If you meant something other than "jetty," please clarify, and I'd be happy to help!