Aquatic botany
1 / 17

Aquatic Botany - PowerPoint PPT Presentation

  • Updated On :

Aquatic Botany. Angiosperms. Hydrophytes. Plants growing in water or on a substrate that is at least periodically deficient in oxygen as a result of excessive water content. Categorizing Wetland Plants for Delineation Purposes (p. 755 of Mitsch).

Related searches for Aquatic Botany

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
Download Presentation

PowerPoint Slideshow about 'Aquatic Botany' - sandra_john

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Aquatic botany l.jpg

Aquatic Botany


Hydrophytes l.jpg


Plants growing in water or on a substrate that is at least periodically deficient in oxygen as a result of excessive water content.

Categorizing wetland plants for delineation purposes p 755 of mitsch l.jpg
Categorizing Wetland Plants for Delineation Purposes(p. 755 of Mitsch)

  • Obligate Wetland (OBL)-occur almost always (>99%) in wetlands; E.g., Typha latifolia, Cattail

  • Facultative Wetland (FACW)-occur usually (67-99%) in wetlands, but also occur in non-wetlands (1-33%); E.g., Onoclea sensibilis, Sensitive Fern

  • Facultative (FAC)-similar likelihood of occurring in wetlands and non-wetlands (33-67%); E.g., Euthamia graminifolia, Grass-leaved Goldenrod

  • Facultative Upland (FACU)-occur sometimes in wetlands (1-33%) but more often in non wetlands; E.g., Quercus rubra, Red Oak

  • Obligate Upland (UPL)-occur rarely (<1%) in wetlands; e.g., Dennsteadtia punctilobula, Hay-scented Fern

    (+/- may be appended)

Categorizing wetland plants by growth form l.jpg
Categorizing Wetland Plants by Growth Form

  • Emergent-with leaves that extend above the water surface; e.g., Northern Blue Flag, Iris versicolor

  • Free-floating-float freely on the water surface; e.g., Duckweed, Lemna minor

  • Floating-leaved-leaves float on water surface; e.g., Spatterdock, Nuphar variegata

  • Submersed-most of leaves growing under water surface; e.g., Curly-leaf Pondweed, Potomogeton crispus

Emergents l.jpg

Blue Flag Iris

Cattail, Typha sp.

Emergents6 l.jpg

  • tolerate fluctuating water levels

  • may dampen shoreline wave erosion; stabilize sediments with interlocking rootbed of rhizomes

  • usually with protective waxy cuticle

  • leaves with aerenchymous tissue making them buoyant, useful for waterfowl nests

  • may reproduce aerially (flowers) or vegetatively by rhizomes

Slide8 l.jpg

Purple Loosestrife

American Burreed, Sparganium americanum

Floating leaved plants l.jpg
Floating-leaved Plants

Water Meal, Wolfia sp.

Giant Duckweed, Spirodelia

Floating leaved plant community l.jpg
Floating-Leaved Plant Community

  • cirucular/eliptical leaves with smooth margins resist tearing

  • leathery; thick cuticle (waterproofing)

  • stomata on surface

  • aerenchyma

  • often long petioles; often covered with mucilage

  • may reproduce from flowers or by extensive rhizomes

  • free-floating plants produce turions to overwinter

Submersed plant community l.jpg
Submersed Plant Community

  • leaves flexible, often finely divided; provide structure for invertebrates

  • no cuticle; often limp-the water provides support

  • heterophylly is common

  • stems photosynthesize

  • some reproduce from seed, others by turion, rhizomes, or tuber

Submersed plants l.jpg
Submersed Plants

Naiad, Najas sp.

Slide15 l.jpg

Pondweeds, Potomogeton sp.

Carex l.jpg

Bristly Sedge, C. comosa

Tussock Sedge, Carex stricta

Juncus l.jpg

Soft Rush, Juncuseffusus