Term
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Definition
| crown is damaged yield shoots coming out of lower trunk/bark |
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Term
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Definition
| study of the ID of woody plants |
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Term
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Definition
| mostly single stemmed, woody plant with mature height of at least 20-25 feet being relatively long lived and relatively deep rooted |
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Term
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Definition
| male & female on one plant |
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Term
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Definition
| male and female plants seperate |
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Term
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Definition
| needle bundle (coniferous species) |
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Term
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Definition
| habitat, stream protection, CO2->O2, wood, recreation |
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Term
| how much of the world is forested |
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Definition
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Term
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Definition
| an area at least 1 acre with at least 10% tree cover |
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Term
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Definition
| forested area with 5-10% tree cover |
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Term
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Definition
| forested area capable of growing 20 cubic feet of wood per year (1/4 of a cord), commercial |
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Term
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Definition
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Term
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Definition
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Term
| important aspects of a forest |
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Definition
| age structure, specie diversity, density (forest & individual species), wildlife |
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Term
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Definition
| a group of trees that exert an influence on ecology on its area, forests create a microclimate @ the forest floor |
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Term
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Definition
| a landscape where the environment leads to characteristic vegetation |
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Term
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Definition
| interactions among species in an area |
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Term
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Definition
| interactions between the earth and biosphere in an area (biotic & abiotic) |
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Term
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Definition
| boundary between two communites/ecosystems |
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Term
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Definition
| an environment associated with a river |
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Term
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Definition
| associated with mountains and topography |
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Term
| red light (red part of spectrum) |
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Definition
| can penetrate forest canopies, not useful for photosyntheses, too much can cook plants |
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Term
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Definition
| trees and associated living organisms in an urban area |
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Term
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Definition
| 57% private, 43% public; 74% or eastern forestland is PRIVATE, 78% of western forestland is PUBLIC |
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Term
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Definition
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Term
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Definition
| harvesting less than is grown |
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Term
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Definition
| all leaves lost on periodic basis, without leaves for a portion of the year |
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Term
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Definition
| tree always remains green, leaves live more than one year (2-15+), portion of leaves die each year |
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Term
| advantages of confer needles |
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Definition
| longer retention allows lower nutrient demand and they can survive a shorter growing season; structure reduces water use (can survive summer drought) |
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Term
| key threats to US forests |
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Definition
| insects & disease (foreign), non-native invasive plant species, wildland fire, development, climate change |
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Term
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Definition
| form/height as a perennial woody plant at maturity greater than 20 ft tall with a single main trunk having an elevated crown and an extensive root system |
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Term
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Definition
| light, seed distribution, escape damage from animals & abrasion from other plants, improved pollenation |
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Term
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Definition
| needs extra support, greater transport requirements (water & nutes up against gravity, sugars from leaves down to roots expends energy) |
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Term
| main functions of central core of wood |
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Definition
| transport (vascular system i.e. xylem conducts water and nutes) & support (thickened walls provide extra support for height growth) |
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Term
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Definition
| where the tree lives and what it does |
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Term
| Gaussian competitive exlusion rule |
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Definition
| no two organisms share the same niche |
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Term
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Definition
| results from a combination of grow in different dimensions |
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Term
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Definition
| lengthening of stems (UP) |
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Term
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Definition
| thickening of stems (width) |
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Term
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Definition
| regions of the tree where cell division(tree growth) occurs |
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Term
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Definition
| located at the ends of branches |
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Term
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Definition
| level at which leaf carbon balance is zero, PS=respiration |
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Term
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Definition
| PS no longer increases with increased light |
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