Woody shrubs

Invasive woody shrubs, like all invasive species, can crowd out all other species reducing biodiversity and therefore the health and resilience of an ecosystem. Himalayan blackberry (Rubus bifrons) for example will quickly become the only plant in an area. While it can support some bird nesting, it only fits one ecological niche, leaving birds, pollinators, and other creatures that rely on the plant diversity of an ecosystem without food or shelter.