-A body of water that contains a mixture of fresh water and salt water that serves as a nursery ground.

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Presentation transcript:

-A body of water that contains a mixture of fresh water and salt water that serves as a nursery ground

Mobile Bay Estuary

Image Credit: Geological Survey of Alabama & Alabama Aware Program of the Alabama Game & Fish Division; Funding by Federal Sport Fish Restoration Program Drainage Basin Index Map T e n n e s s e e F l o r i d a G e o r g i a M i s s i s s i p pi ESCATAWPA MOBILE DELTA CHATTAHOOCHEE PERDIDO MOBILE BAY BLACKWATER YELLOW CHIPOLA CHOCTAWHATCHEE

Smooth Cordgrass

Black Needle rush

Benthic Algae

Benthic Algae Producing Oxygen

Hydric Soil and Detritus

Ecological Functions of Salt Marshes Nursery habitat for juvenile fishery species Habitat for coastal birds Habitat for adult benthic organisms (worms, clams, oysters) and mammals (Nutria) Habitat for permanent residents: –Marsh Periwinkle snail –Olive Nerite snail –Fiddler Crab –Ribbed Mussel Traps sediments and impurities in run-off Production of detritus Supports a complex food web

Nursery habitat for juvenile fishery species

Habitat for coastal birds

Oysters and mussels Nutria Habitat for adult benthic organisms and mammals

Saltmarsh Periwinkle Habitat for permanent residents

Olive Nerite snail

Fiddler Crab

Ribbed Mussels

The word plankton comes from the greek word planktos which means “wanderer.” Plankton are Drifters

Mola mola can reach 8 ft. in length Photo Credit: National Oceanic & Atmospheric Administration / Dept. of Commerce

Mola mola washed up on Dauphin Island January, 2004

Groupings of Plankton 1) Phytoplankton - primary producers 2) Zooplankton - consumers

Groupings of Plankton 3) Holoplankton - zooplankton that spend their whole lives as plankton 4) Meroplankton - zooplankton that spend only part of their lives as plankton

Common Phytoplankton

Photo Credit: Dr. Neil Sullivan, University of Southern Calif. / National Oceanic & Atmospheric Administration / Dept. of Commerce Diatoms (Division Chrysophyta)

Diatom Frustules ©

Common Zooplankton

Copepod with Eggs Copepod

Copepod with Increased Surface Area ©

Photo Credit: OAR/National Undersea Research Program (NURP) Ctenophore

Krill

Photo Credit: OAR/National Undersea Research Program (NURP) Humpback Whales Feeding on Mostly Krill

Some Meroplankton….. Just to name a few

Photo Credit: M. Youngbluth; OAR/National Undersea Research Program (NURP); Harbor Branch Oceanographic Institution Jelly Feeding on Plankton within Watery Boundaries

Photo Credit: OAR/National Undersea Research Program (NURP) Collecting Larval Planktonic Fish off of California

Plankton Appreciation