Keeping woodlands in Wales and Ireland healthy

Glossary H


A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Habitat:An area with specific environmental conditions in which an organism lives and reproduces.
Hacking (stump):The taking off manually of the bark around a stump which has been left after felling or harvesting.
HadCM3:Hadley Centre Global Climate Model-3 developed at the UK Met Office Hadley Centre.
Haemolymph:Insect blood.
Hand lens:A small device used by an entomologist to make it easier to see features of insects or other invertebrates.
HAP:Habitat Action Plan.
HEG:Historic Environment Group: established in 2004 to advise the Welsh Government on action to benefit and promote the historic environment of Wales. It specifically identifies strategic issues and priorities for action. With CADW as chair and secretariat, members include the Civic Trust for Wales, NRW and the WLGA.
Hemimetabalous:A type of metamorphosis in which an insect hatches from an egg and then goes through several similar nymphal stages before reaching adulthood.
Hemipterous pests:Belonging or pertaining to the Hemiptera, an order of insects having forewings that are thickened and leathery at the base and membranous at the apex, comprising the true bugs.
Hibernation:A period of winter dormancy.
HIMS: Hylobius Integrated Management System quantifies the effects of factors known to reduce Hylobius populations and damage and combines them in a practical way to produce compound beneficial effects. The programme investigates the potential of IFM to minimise the current emphasis on insecticide applications to protect transplants from feeding damage by Hylobius abietis the principle forestry restocking pest.
HMSS:A decision support system to help foresters predict and reduce damage and costs due to the large pine weevil, Hylobius abietis
Holometabalous:A type of metamorphosis in which an insect goes through four distinct stages: egg, larva, pupa, imago (the adult insect).
Holotype:In Entomological Terms – a single specimen designated or indicated the type specimen by the original author at the time of publication of the original description.
Homonym:In Entomological Terms – each of two or more identical but independently proposed names for the same or different taxa.
Host:The organism, plant or animal, that is attacked by a parasite.
HOV:Heads of the Valleys programme: a 15 year regeneration strategy developed in partnership with five local authorities (Rhondda Cynon Taf, Merthyr Tydfil, Caerphilly, Blaenau Gwent and Torfaen) and other local stakeholders to tackle the root causes of economic inactivity and other key issues in the area, within the context of the Wales Spatial Plan[bold:
HSG:Hylobius Stakeholder Group – set up to specifically consider how research and practice can best be integrated in developing new IPM strategies for this highly damaging pest.
Hylobius abietis:Large Pine Weevil feeds on the living bark of most woody shrubs and trees.
Hymenopterous pests:Of, relating to, or belonging to the Hymenoptera, an order of insects, including bees, wasps, ants, and sawflies, having two pairs of membranous wings and an ovipositor specialized for stinging, sawing, or piercing.
Using nature's weapons to battle current and future threats

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