This website makes extensive use of JavaScript. For a richer experience please enable JavaScript in your browser.

High contrast version - your agreement to receive cookies is required

To view a high contrast version of our website we will need to give your computer two cookies. These are functional cookies - they do not collect any of your personal data, but simply remember that you agree to receiving the colour scheme cookies and that you want this website to have a high contrast colour scheme.

If you would like to turn on the high contrast function and receive the cookies, click on the 'accept' button. You will be able to delete the cookies at any time from your machine. If you do not want these cookies or no longer want the site to appear in high contrast colours, click the 'cancel' button. If you do not accept the cookie this function will not work.

We are asking your permission to place these cookies on your machine as part of the European e-Privacy Directive which applies to all sites in the UK. You can find out more about the Directive, the cookies we use on our website and how you can control cookies at www.yorkshiredales.org.uk/privacypolicy.htm#cookies.

Resizing the text size - your agreement to receive cookies is required

To change the size of the text on our website we will need to give your computer two cookies. These are functional cookies. One remembers that you have agreed to receiving the text size cookie while the other one remembers what size of text you have chosen to view the site with. Neither of the cookies collect any of your personal data.

If you would like to change the text size and receive the cookies, click on the 'accept' button. You will be able to delete the cookies at any time from your machine. If you do not want the cookies or no longer want the site to appear with different sized text, click the 'cancel' button. If you do not accept the cookies this function will not work.

We are asking your permission to place these cookies on your machine as part of the European e-Privacy Directive which applies to all sites in the UK. You can find out more about the Directive, the cookies we use on our website and how you can control cookies at www.yorkshiredales.org.uk/privacypolicy.htm#cookies.

Cookies on this website

We use cookies to ensure you have the best experience on our website and we do not collect your personal information. If you continue without changing your computer settings, we'll assume that you are happy to receive our cookies and we will not show you this notice again. You can change your cookie settings at any time so that your computer rejects our cookies.

Find out more about cookies and changing your settings

Chalara ash dieback (Chalara fraxinea)

The landscape of the Yorkshire Dales National Park is characterised by important ancient semi-natural ash woodlands. These woodlands also contain rare and endangered plants and insects. At the moment ash trees are threatened by a disease called Chalara ash dieback which has recently been found in the wild in East Anglia and in recently planted new native woodlands.

A healthy ash in the Yorkshire Dales National Park Healthy ash

Chalara ash dieback is a serious disease of ash trees which is caused by a fungus called Chalara fraxinea (C. fraxinea). The disease causes leaf loss and crown dieback in affected trees, and it can lead to tree death. Ash woodlands contain a number of tree species including ash, rowan, hazel, hawthorn and holly. The Yorkshire Dales National Park Authority (YDNPA) considers that the ash woods are a priority habitat and will continue to do so. We will monitor the progress of the disease and will endeavour to ensure that these habitats continue to be safeguarded.

National Park Authority involvement

YDNPA staff are working closely with colleagues at the Forestry Commission. A Trees and Woodlands Officer has been seconded, part time, to the Forestry Commission and has recently completed surveys of ash woodlands within the National Park in order to help to establish whether C. fraxinea exists here. As of 13 November 2012, no cases have been confirmed. The National Park Authority is now waiting for the Government to publish the action plan for tackling the outbreak following the National Survey and the recent national summit on C.fraxinea

The monitoring and maintenance that is carried out by Dales Volunteers has been stopped pending information about the distribution of C. fraxinea within the National Park.

More information

The most up-to-date information and the Government's response to the crisis is available from the Department for the Environment, Food & Rural Affair's website at www.defra.gov.uk/news/2012/11/09/wms-ash/.

The Forestry Commission's website, www.forestry.gov.uk/chalara, provides first hand information and a more practical interpretation about the disease, how to recognise it, the current distribution and what the current status is can be found on the Forestry Commission website at www.forestry.gov.uk/chalara.

Details of the situation locally were issued in a press release by YDNPA on 2 November 2012.

Like this page? Share it: