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16 Cards in this Set
- Front
- Back
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List the Genera:
-open inflorescence -round cross-sectional culm -hard tepals |
Juncus
(rushes are round) |
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List the Genera
-triangular cross-sectional culm -mostly basal leaves (bottom) -cylindrical inflorescence |
Carex
(sedges have edges) |
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List the Genera
-Inflorescence has single spikelet at top/end -usually leafless culms |
Eleocharis
(spinerushes) |
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List the Genera
-culms: mostly round, leafless - some long bristles are present around floret |
Schoenoplectus |
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What are some ecological advantages that invasive species have over native plant species? |
-Early growth cycle -Fast growth rate -Access to deeper H2O (w/taproots) -Prolific seed producers -NO natural enemies -Allelopathic: use chemicals to reduce germination of other species and herbivory |
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What's a downside of this noxious weed control method?
PREVENTION |
costly
(resources such as money and time) |
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What's a downside of this noxious weed control method?
CHEMICAL |
(possibility of evolved) resistance |
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What's a downside of this noxious weed control method?
BIOLOGICAL |
complex, no short-term results |
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What's a downside of this noxious weed control method?
CULTURAL |
demand exceeds supply (sheep) |
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What's a downside of this noxious weed control method?
PHYSICAL/MECHANICAL |
ineffective for large-scale |
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What are 3 characteristics of wetlands? |
hydrology (anaerobic during growing season)
anaerobic soil
vegetation requires or survives anaerobic conditions |
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How have plants adapted to anaerobic conditions (low oxygen)?
(please list a few adaptations) |
(morphological): aerenchyma cells, adventitious roots, rapid stem elongation
(physiological): decreased growth rate, energy reserves, anaerobic respiration
(life cycle timing): buoyancy, dormancy, seed timing |
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What are the 4 wetland indicator statuses (WIS)?
(Please list from least occurring in wetlands to most likely.) |
FACU: facultative upland (1-32%)
FAC: facultative (33-65%)
FACW: facultative wetland (66-99%)
OBL: obligate (>99%) |
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Define: weed |
A plant which is growing where people do not want it |
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Define: noxious weed |
A plant which is designated by an official agency due to its negative economic and/or ecological effects |
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Are biological control approaches to noxious weed management designed primarily to eradicate target species?
(Yes or No) |
No
(mainly to control/contain or reduce their spread) |
