Most Unwanted: Non native deer species
Non native deer species
Habitat: Terrestrial
Threat: Threatens native ecosystems and species
Status: Potential
Currently there are three species of deer known to occur in a wild state on the island of Ireland. The Red Deer Cervus elaphus constitute Irelands only living native wild deer species while Fallow Dama dama and Sika Cervus nippon deer were both introduced as either a food source or hunting and ornamental purposes. Historically, a number of deer species have been introduced to many parts of the world. Problems arise when the herd populations begin to damage the native habitats and economic activities of the region. Of particular concern at present are species of deer present in Britain but not yet known present in Ireland. This includes Muntjac deer Muntiacus reevesi, and the Roe deer Capreolus capreolus.
Impact
Deer tend to be large mammals with significant impact on the countryside in particular sites of conservation concern (e.g. woodlands) and forestry sites. These animals can destroy the understory of forests by overgrazing; propagate other non native species such as Rhododendron; act as a reservoir for diseases (bovine TB) and parasites for domestic livestock; strip bark from trees and trampling of vegetation which in turn may lead to increased soil erosion.
How can it get here
Importing these species is the only viable pathway of introduction. Importation of both species maybe allowed under licence but illegal smuggling is also a very real possibility.
How can they spread
These animals tend to be very mobile so are capable of moving freely throughout the country side. However, long distance movement by individuals remains a possibility. This activity is currently prohibited in both jurisdictions and therefore an individual undertaking movement of deer species is committing an offence.
What you can do to prevent its arrival
If you suspect or know of any of these species of deer in your local area please report this.
Report all sightings.
Additional reading
Habitas Invasive Alien Species in Northern Ireland
