Lecture 5 - Aquatic Plants Flashcards
1
Q
Emergents Plants:
A
- Can survive flooding: air to roots
- aerial roots
- Xeromorphic leaves
1
Q
Plants in a Swamp:
A
- Trees
- Floating mats
- Sedges
- Rushes
- Grass vs. Restionaceae
2
Q
Aquatic Plants - What Do They Do (8)?
A
- Microhabitats
- Spawning, egg laying, and nursery sites
- Cover from predators
- Sources of labile organic matter (OM)
- Entangle organic matter
- Stabilize and accumulate fine sediments (density increases which leads to lower velocity)
- Remove NO3 and PO4 via uptake
- Community remove NO3 via denitrification and anammox in deoxygenated soft sediments
3
Q
Ecology of Arctic Plants:
A
Filamentous/thalloid algae
4
Q
Ecology of Temperate Plants:
A
Lots of vascular (submergents), algae and mosses
5
Q
Ecology of Tropical Plants:
A
Diverse vascular
6
Q
Characteristics of Submerged Plants:
A
- Strap-shaped, dissected/lobed and thin leaves (without hairs) with chloroplasts in epidermis
- Reduced/absent cuticle
- Absent/non-functional stomata
- Absord CO2 or HCO3 through epidermis
- Lacunae or large air spaces
- May exhibit heterophylly (different leaves under/on/above)
- Fibers/woody tissue absent
- Reduced root system
- Heavy reliance on vegetative reproduction via stolons, rhizomes, tubers and turions
