 Forest covers about 12 @.@ 6 % of the country , most of it designated for commercial production . Forested areas typically consist of monoculture plantations of non @-@ native species , which may result in habitats that are not suitable for supporting native species of invertebrates . Remnants of native forest can be found scattered around the island , in particular in the Killarney National Park . Natural areas require fencing to prevent over @-@ grazing by deer and sheep that roam over uncultivated areas . Grazing in this manner is one of the main factors preventing the natural regeneration of forests across many regions of the country . 
 Forest <a href='uninflect' title='1'><mark>covers</mark></a> about 12 @.@ 6 % of the country , most of it designated for commercial production . Forested areas typically consist of monoculture plantations of non @-@ native species , which may result in habitats <a href='null_relcl' title='2'><mark>that</mark></a><a href='negative_concord' title='3'><mark>are</mark></a> <a href='negative_concord' title='4'><mark>not</mark></a>suitable for supporting native species of invertebrates . Remnants of native forest can be found scattered around the island , in particular in the Killarney National Park . Natural areas require fencing to prevent over @-@ grazing by deer and sheep <a href='null_relcl' title='5'><mark>that</mark></a>roam over uncultivated areas . Grazing in this manner <a href='drop_aux' title='6'><mark>is</mark></a>one of the main factors preventing the natural regeneration of forests across many regions of the country . 
Forest cover about 12 @.@ 6 % of the country , most of it designated fa commercial production . Forested areas typically consist of monoculture plantations of non @-@ native species , which may result in habitats ain't suitable ffirsupporting native species of invertebrates . Remnants of native forest can b found scattered around the island , in particular in da Killarney National Park . Natural areas require fencing to prevent ova @-@ grazing by deer and sheep roam over uncultivated areas . Grazing in this manner one of the main factors preventing the natural regeneration of forests across many regions of tdacountry .