Glossary: H

Filter by category

Term Definition French
Habitat The environment in which a population or individual lives; includes not only the place where a species is found, but also the particular characteristics of the place (for example, climate or the availability of suitable food and shelter) that make it especially well suited to meet the life cycle needs of that species. Habitat
Haltere Small knobbed structure representing the hind wings in dipterans. Haltère
Hamuli Series of small hooks found in some insects that anchor the hind wings to the fore wings during flight. Hamule
Hand weeding Removing the undesirable species inhibiting the growth of valued species manually. Désherbage manuel
Hard seed Seed having coats that resist cracking or breaking and may be more or less impermeable to water. Graine dure
Hard snag A snag composed primarily of sound wood, generally merchantable. Chicot dur
Hardening off Preparing seedlings or rooted cuttings for planting by gradually reducing water, nutrients, or day length, or by increasing light intensity and thus inducing changes in shoots that make them more resistant to exposure to full sunlight. Endurcissement
Hardwood(s) (broad-leaved trees) Trees whose leaves are not persistent and fall off at the end of a defined growing season or during a period of temperature or moisture stress. This is the predominant tree type in deciduous forests. Also refers to the wood produced by these trees. Feuillus (arbres à feuilles caduques)
Header A short beam over a structural opening such as a door or window. Linteau
Heeling in Temporary storage of seedlings by burial of root systems in a trench. Mise en jauge
Hematophagous Feeding on blood. Hématophage
Hemicellulose-based One of the main components of wood, hemicellulose is a sugar that can be used as fuel or converted into other bioproducts, including sweeteners. Produits à base d’hémicellulose
Hemimetabolism Incomplete metamorphosis in which there is no pupal stage. The larvae, also called nymphs, are inactive and resemble the adults. Hémimétabole
Herbicide Any chemical preparation used to kill or inhibit the growth of forbs, grasses, woody plants, and their seeds. Herbicide
Herbicide tolerant Capable of surviving and recovering from the application of herbicides. Tolérant aux herbicides
Heritability That portion of the character variance due to hereditary factors as distinct from factors of environment. Heritability is described in one of two ways, depending on the type of investigation. Héritabilité
Heritage forest A forest managed to harvest forest products and to sustain the natural system, including its bioproductivity, biotic and abiotic diversity. Modern technology, equipment and methods may be used to harvest, restock and tend the forest, with an emphasis on natural restocking, supplemented with artificial restocking of appropriate endemic species. Forêt patrimoniale
Heteroconophagous Feeding occasionally on seeds and cones, but usually lives and feeds on stems and needles. Hétéroconophage
Hibernaculum A place or material in which young insect larvae hide during the winter. Hibernacle
Hibernation Sleeplike stage in which an organism's metabolism is reduced to its lowest level. Hibernation
High forest Crops and stands of trees, generally of seedling origin, that normally develop a high closed canopy. A term originally used to differentiate the natural, essentially seedling forest of long rotation from the artificial. Futaie
High grading A partial harvest removing only the most valuable species, or trees of desirable size and quality, without regard for the condition of the residual stand. Écrémage
High-forest systems Silvicultural systems in which the crops are normally of seedling origin, natural and/or artificial, and the rotation is, traditionally at least, long. Régime de la futaie
High-forest-with-reserves system An accessory system in which selected trees of the old crop, scattered or in groups, are retained after regeneration is completed, for the whole or a part of the next rotation. Futaie avec sur-réserves
Hogging Reducing wood to coarse chips, for fuel or the manufacture of wood pulp and wood chipboard. Déchiquetage
Hole planting Setting plants in loosened soil replaced in or brought to a dug hole or pit. Roots separated on either side of a wedge or saddle of earth left in situ when the hole was dug is termed saddle planting. Plantation sur potets
Holistic approach Broad brush approach based on a theory according to which a whole cannot be analyzed without considering the sum of its parts or reduced to discrete elements. Approche globale
Holometabolism Complete metamorphosis in which a pupal stage occurs between the larval stage and the adult form. The pupa is inactive and looks very different from the adult. Holométabole
Home range The area in which an animal lives, hunts, and mates throughout its life. Domaine vital
Host Organism harbouring a parasite. Hôte
Household and sanitary paper Made for various uses around the home and for industrial and commercial purposes. Household papers include facial tissues, toilet paper, hand towels and napkins. Sanitary papers include products like baby diapers, adult incontinence products and sanitary napkins. Papier à usage domestique et sanitaire
Humicolous Living in or on humus or leaf litter. Humicole
Humus A general term for the more or less decomposed (plant and animal) residues in the soil, litter therefore being excluded. Humus
Hybrid Plant obtained by crossing two genetically dissimilar parent plants. Hybride
Hybrid The offspring of genetically different parents (usually refers to crosses between two species). Hybride
Hybridization Sexual reproduction using genetically distinct parents, that is, belonging to different populations, varieties, or species. Hybridation
Hyperparasite Parasitic organism that lives off of another parasite. Hyperparasite
Hyperparasitoid Organism that attacks and lives on another parasitoid. Hyperparasitoïde
Hypha One of many filaments that make up the mycelium or body of a fungus. Hyphe
Hypovirulence Reduced virulence in a micro-organism caused by genetic mutation or the presence of a virus. Hypovirulence
Date modified: