Report invasive species & other threats
Invasive Non-Native Species (INNS) are those that have been transported outside of their natural range, by human activities or naturally, and can damage our environment, the economy, our health and the way we live. The spread of INNS can outgrow, kill, or out compete our local species which can impact food chains and biodiversity. They can lead to financial costs for fisheries, aquaculture, commercial and leisure marine sectors too.
Non native invasive species shape the Manx Countryside. European gorse is the most common shrub and Sycamore the most common broadleaf tree; neither occur naturally on the Island. They do however support a significant amount of wildlife and are very much a part of our treasured landscape and culture. The rate at which new species have colonised the Island has grown over the past 150 years, with most species being first introduced to gardens before escaping to the wild. In many ways this is making the Island more diverse than it has ever been with our wildflower count going from about 500 ‘native species’ to over 2000 with all the introductions. A few of these newer species do pose a threat by pushing out other wildflowers as they encroach into natural habitats. Some species like New-Zealand pigmy-weed have escaped and we can do nothing about it, others like Japanese Knotweed could be eradicated if resources become available. The next century of the Isle of Man will see the rise of many new invasive species such as Griselinia a favourite hedging plant that is seeding into nearly every native habitat on the Island and with a warming climate other species will come too.
Biosecurity in the Isle of Man
The Isle of Man Government is taking steps, through a marine biosecurity plan, to make sure that good practices are in place to reduce the risk of introduction and spread of invasive non-native species in Manx territorial waters.