Knowledge and Policy Gaps in Coastal Invasive Species Management

New research published recently in Estuaries and Coastal Science indicates that current policy and knowledge of invasive species in coastal and estuarine areas is seriously lacking.

Shipping may introduce invasive non-native species (INNS) through the emptying of ballast water in estuarine areas, or through species attached to the hull, often these may have originated thousands of miles from where they are released. Fish farming and aquariums are also significant potential INNS sources.

The authors of the paper call for further research by scientists and greater attention from policy-makers and stakeholders. The researchers suggest that prevention and early detection are the most effective methods of dealing with INNS. Further, screening using historically invasive-traits and matching previous habitats with potential new habitats, could help predict the likelihood of future invasions into alien environments.

This is of particular relevance given that the draft Marine Bill presently does not provide any reference to the introduction of INNS into the marine environment, nor any legislative preventative measures. The CBD and the Codes of Practice on the Introductions and transfers of Marine Organisms set by the International Council for Exploration of the Seas are not binding and carry no fixed penalties, therefore unless the Marine Bill addresses these issues in its final iteration, a great opportunity will have been missed.

Do readers of the blog agree that the Marine Bill should address the introduction of invasive non-native species into the marine environment?


Read the BES's Parliamentary Office of Science & Technology (POST) fellow's POSTnote.

Further information on the British Ecological Society's POST fellowship can be found on the website.

GB Invasive Non-Native Species Strategy Launched

Defra yesterday launched the Great Britain Invasive Non-Native Species Framework Strategy, aiming to coordinate existing programmes to tackle non-native invasive species in England, Scotland and Wales and to introduce means to spot threats posed by invaders much earlier. It is estimated that there are now more than 3,000 non-native species wild in Britain, with climate change expected to bring more foreign species to Britain's shores. Invasive non-native species, such as Japanese Knotweed, cost the British economy upwards of £2bn a year.

The strategy is built around the three-stage approach agreed by the Parties to the Convention on Biological Diversity in 2002, to:

• to help prevent introductions in the first place by raising awareness of the risks and increasing understanding of the impacts;
• to better enable early detection and rapid response to introductions before they become major problems; and,
• to develop longer-term control programmes based on sound science.

Key points from the GB strategy include:

• Measures to educate the public on the risks posed to native habitats and wildlife by non-native invasive species, and on how to prevent introducing these species.
• The development of a web-based, shared central directory showing types of invasive non-native species in particular areas and how they have spread.
• Developing a clear framework for rapid responses when invasive non-native species are detected in Britain.

In addition, the GB Strategy also contains measures to improve the effectiveness of legislation, to improve integration of activities and programmes and to better focus research effort.

New Database Shows Extent of Threat to Marine Environment from Non-Native Invasive Species

New research published in Frontiers in Ecology and the Environment reveals the extent of the threat posted to the marine environment from non-native invasive species.

Researchers created a database of invasive species worldwide, examining 329 non- native invasive species and scoring each on a 1-4 scale, on the basis of their ecological impact, geographical extent, invasive potential and management difficulty. The database allows the identification of global patterns. The researchers conclude that interception and removal of the routes used for colonisation by the invasive species is the most effective strategy for reducing their future impacts.

This presents a real challenge however, given the range of routes by which species can colonise: shipping was found to be the most common, through transportation in ballast water or through hull-fouling.

The database could be used to inform conservation policy decisions and, through allowing a comparison between invasive species in similar habitats, can allow prediction of species likely to become invasive in a particular area.

The global map produced as a result of the study shows that the Mediterranean and North Seas are the marine areas most affected by non-native invasive species.

Access the database of Invasive Species (contributions to the database are welcome)

Link to POSTnote on Non-Native Invasive Species: produced April 2008 by the BES POST Fellow, Fay Collier. Find out more about the BES POST Fellowship

Control of Invasive Non-Native Species

The Department for Environment, Food and Rural Affairs is consulting on proposed revisions to Schedule 9 of the Wildlife and Countryside Act and ban on the sale of certain non-native species. Defra has proposals to both add and remove species from Schedule 9, which aims to control the release of invasive non-native species into the wild. The consultation also proposes that a number of non-native species should not be allowed to be sold in the UK, because of the economic and environmental damage they cause. Defra would like to have comments on the list of species recommended for inclusion/exclusion on the relevant lists. The consultation closes on 31 January 2008.

GB Strategy for Invasive Non-Native Species

A draft of the GB Invasive Non-native Species Framework Strategy is out for consultation until 23 May 2007. The draft strategy's vision is to protect against the adverse consequences of invasive non-native species by increasing awareness, improving co-ordination amongst a range of parties and a providing framework for action at all levels. It also looks to encourage research to be more effective at informing policy and action. The consultation asks a range of questions, which the BES will be responding to.