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| Boating There are six improved and several unimproved boat launching facilities located on the Refuge. Improved facilities are those with pad-ed parking and concrete launch ramps. Unimproved facilities are those with dirt or graveled small parking areas and dirt or gravel launch ramps. Improved Ramps Arrowhead Landing: Located in Limestone County on the west central portion of Limestone Bay. Triana: Located south of the town of Triana in Madison County, where Indian Creek flows into the Tennessee River. This is the easternmost boat ramp. Hickory Hills: Located in Morgan County on the northern portion of Flint Creek. Bluff City: Located in Morgan County on the southern bank of the Tennessee River, approximately nine miles upstream from the U. S. Highway 31 bridges. Sharp’s Ford/Cotaco Creek: Located in Morgan County on the western bank of Cotaco Creek at Sharp’s Ford Road. Tallulah/Sunnyside Landing: Located in Morgan County on the southern bank of the Tennessee River, approximately twelve miles upstream from the U. S. Highway 31 bridges. Unimproved Ramps Arrowhead Landing:# 1 & #2 Located in Limestone County on the west central portion of Limestone Bay. Rockhouse: Located in Limestone County on the north bank of the Tennessee River, approximately six miles upstream from the U. S. Highway 31 bridges. Flint Creek: Located in Morgan County on Flint Creek near Alabama Highway 67. Duncan Hill: Located in Morgan County at the Flint Creek/Garth Slough confluence. Susie Hole: Located in Morgan County on the south side of Garth Slough. Cave Springs Mussel Camp: Located in Morgan County on the south bank of the Tennessee River, approximately five miles upstream from the U. S. Highway 31 bridges. Madden Branch: Located in Morgan County at the Madden Branch/Cataco Creek confluences S. Fish and Wildlife Service Hunting Wheeler National Wildlife Refuge is one of over 500 national wildlife refugees. The primary objective of a national wildlife refuge is to provide a habitat for the conservation and protection of all species of wildlife. Carefully managed hunts are one tool used to manage wildlife populations. Small and large game hunting with bows and flintlocks provides high-quality recreation for many people. Wheeler NWR offers public hunting on approximately 18,000 acres, and hunting regulations are published each year in the WNWR hunting permit brochure. Hunters are allowed to hunt white-tailed deer, feral hogs, squirrels, rabbits, raccoons, opossums, and quail. Waterfowl hunting is not permitted on the refuge. 500+ acres between HGH Road and the Tennessee River are designated as a special access hunting area for disabled hunters. Special access permits are available at Refuge Headquarters. Fishing is a very popular activity at Wheeler NWR, with an estimated 274,000 anglers trying their luck each year in the 18,000 acres of refuge waters. Many creeks and sloughs adjoin the main channel of the Tennessee River throughout the refuge. Old river channels, open blackwater embayments, and miles of tree-lined creeks and streams provide excellent fishing opportunities for largemouth, smallmouth, spotted, stripped, and hybrid bass, bluegill and redear sunfish, crappie, sauger, several species of catfish, and a few yellow perch. A universally accessible fishing pier is available on Flint Creek across Highway 67 from the Visitor Center. A three-acre catfish pond is available for organized events. Each year, groups ranging from special needs children and adults to summer day campers and cub scouts enjoy fishing at the pond. U. S. Fish and Wildlife Service Water Level Management Wheeler NWR staff manages impoundment water levels on the refuge to provide habitat for wintering waterfowl. Impoundments are enclosed bodies of water such as a reservoir. The management of these areas creates moist soil and flooded cropland conditions that produce natural, desirable vegetation and high-calorie food for waterfowl. Impoundments last benefit colonial water birds, marsh birds, and shorebirds. To grow moist soil plants, water levels in the impoundments must be lowered in the spring for the germination of wetland plants. The areas are then flooded in the fall just before waterfowl begin to arrive. A lack of water management limits food and plant options for the birds. This management objective is difficult to accomplish when TVA raises and lowers Wheeler Reservoir with a schedule that is opposite to what is needed for sustaining waterfowl. Farming 3.500 - 4,000 acres are cooperatively farmed on the refuge. Cooperative farming is a mutually beneficial arrangement where the farmer is allowed to farm refuge land under certain guidelines and restrictions, including that a certain share of the crop (18-20%) be left for waterfowl and wildlife. It provides food, browses, cover, and nesting areas for waterfowl and other wildlife species. Crops grown include soybeans, corn, winter wheat, milo, and millet. Various waterfowl, such as Canada geese, Snow Geese, Sandhill Cranes, and Mallards, feed in the fields during fall and winter. Deer enjoy feeding on corn, soybeans, and winter wheat, while raccoons and squirrels drag ears of corn into the woods and feed on it there. Various species of songbirds feed on these crops also. |
Monday, February 12, 2018
Wheeler Wildlife Refuge Complex
Wheeler National Wildlife Refuge at Flint Creek
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| National Wildlife Refuge Wheeler How Can You Help? 1. Dispose of fishing lines, hooks, and trash in the bins and containers provided. 2. Pick up any trash you see. 3. If you pack it in, you can pack it out. 4. Volunteer with the Wildlife Refuge for clean-up events. Reminder: artifact collecting is not permitted. Contact Information Refuge Headquarters 256-353-7243 Visitor Center - 256-350-6639 In case of an emergency, call 911 Wheeler National Wildlife Refuge U. S. Fish and Wildlife Service Refuge Lands Within Redstone Arsenal Highways Roads Refuge Boundary Visitor Center Wildlife Observation Boating Flint Creek Environmental Area & Universally Accessible Fishing PierU. S. Fish and Wildlife Service Our History 1838 Trail of Tears: The discovery of gold in Georgia and thirst for land expansion prompted the U.S. Government and white communities to force the Cherokee nation from their ancestral lands. During the summer and winter of 1838, the first three detachments driven west traveled by water on the Tennessee River from Ross's Landing near present-day Chattanooga. They followed the river through Alabama and West Tennessee before merging with other rivers and eventually arriving in Oklahoma. 1933 TVA ACT: In May of 1933, President Franklin Delano Roosevelt signed the Tennessee Valley Authority Act creating the TVA. The Tennessee Valley Authority was designed to modernize the region, using experts and electricity to combat problems in the area. A primary part of the plan was to produce electricity and provide flood relief by constructing a series of dams along the Tennessee River and its tributaries. 1934 TVA COMES TO Town TVA acquired land in the middle third of the valley in 1934-35 to serve as a bed for and buffer around Wheeler Reservoir. Interested individuals and organizations urged that the government take advantage of the newly constructed reservoir to replace the waterfowl habitat. 1938 AN EXPERIMENT: On July 7, 1938, President Franklin Roosevelt set aside the middle third of the new reservoir as an experimental national wildlife refuge to see if multi-purpose reservoirs could be made attractive to waterfowl. The reservoir and new refuge were named for General Joseph Wheeler, who lived near Decatur. 1950 POLLUTION: Rachel Carson's 1962 classic, Silent Spring, documented the serious environmental problems caused by pesticide pollution, including those in the Flint Creek Watershed. In the late summer of 1950, farmers experiencing a very wet season reapplied pesticides to their crops multiple times because they kept washing off in the frequent rains. These high volumes of pesticides washed into Flint Creek, killing most of the fish. Present HERE AND NOW, Impacted greatly by its controversial history, this section of the Tennessee River and Flint Creek is vastly different from what they were over 170 years ago when the Cherokee traveled west. Industries have sprung up, dams have been built, commercial water traffic is considerable, and recreational boating facilities have developed. Wheeler National Wildlife Refuge is one of the few areas remaining along the river that is dedicated to conserving the character of our wild and natural heritage. U. S. Fish and Wildlife Service Flint Creek Flint Creek is a slow-flowing, meandering stream influenced by the fluctuating water levels of Wheeler Reservoir. The creek and its tributaries are comprised of 150 miles of streams that drain over 291,000 acres of land in Morgan, Lawrence, and Cullman counties. Its headwaters are in northern Cullman County, and the creek flows into Morgan County, where it converges with West Flint Creek near US Highway 31. As it confluence with the Tennessee River at mile 308.5 Fishing and Land the Flint Creek shoreline offers a wide variety of hardwoods, bluffs, farms, and wildlife, while the stream itself is home to crappie, bream, bass, catfish, and a few yellow perch. Much of the land surrounding the creek is within the TVA Reservation and Wheeler National Wildlife Refuge, making it accessible to the public. Improved boat launching areas are available at Hickory Hills and Hwy 31 South. There is an improved launch area suitable for small boats and canoes located south of US Highway 67. This universally accessible pier was built so everyone can enjoy what the watershed has to offer. Watershed Project The Flint Creek Watershed Project is a multiagency cooperative led by local leaders and watershed residents. In 1996, a Watershed Conservatory District was established, and plans were developed with the assistance of two federal agencies, five Alabama state agencies, and three local soil and water conservation districts. A variety of projects, including agricultural demonstrations, well sampling programs, on-site wastewater demonstrations, and riparian zone management efforts, have been implemented by this project. Public outreach activities include household hazardous waste days and pesticides. |
Seagrass, Soup of the Sea and Migratory Birds
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Soup of the Sea
Plankton are organisms that drift with currents. Plankton can be plant-like phytoplankton or animal-like zooplankton. Most plankton are small, but even larger organisms are considered plankton if they live their lives drifting with currents. Plankton is found in freshwater and saltwater all over the earth, and it is very important to humans.
Thank your plankton
Imagine your favorite seafood - shrimp - crab, oysters, fish ... thanks to phytoplankton, we can enjoy this mouthwatering cuisine from the sea. Phytoplankton provides two things that are essential for animals (including us) to live. One is food. Like plants on land, they use sunlight and nutrients to produce food. They're the base of the food chain in the ocean. Many tiny animals eat phytoplankton and, in turn, get eaten by larger animals up the food chain. Without plankton, we would not have seafood.
Now, take a deep breath. The second essential ingredient produced by phytoplankton is oxygen. Estimates vary, but most scientists agree that phytoplankton makes up a significant portion of the air on Earth.
There's a zoo out there.
Zooplankton eat. Many eat phytoplankton, and many eat smaller zooplankton. They are an important part of the food chain. A shark may never eat plankton and has no idea it exists, but it depends on plankton for all of its food.
Many zooplankters go through a metamorphosis. Some of them are plankton for part of their lives and then grow large enough to swim against currents or settle to the bottom. Those are called meroplankton. Holoplankton are plankton their whole lives.
You might recognize the adult forms of many meroplankters. See if you can match the adult forms with their planktonic forms below.
Broth of the Bay
Look up at Mobile Bay. These are some of the planktonic organisms that are common in the bay.
Plankton is collected with special nets like this one. The nets have tiny holes and are pulled along the water's surface.
Crabs go through metamorphosis, much like butterflies or frogs. The megalops is one larval stage for crabs.
Bristle worms get their name from their many bristles that are used for movement. They are related to earthworms.
Dinoflagellates are phytoplankton. Some of them can glow like fireflies. Some make toxins that can be harmful to humans when there are lots of dinoflagellates in the water.
Diatoms are phytoplankton. They produce glass-like skeletons that are used in a variety of products. The grit in your toothpaste might come from diatoms.
This is a nauplius, a larval form that is common to many different crustaceans, including barnacles.
Copepods are thought to be the most abundant animals on earth.
They are found in salt and fresh water and even in damp soil.
They are incredibly strong for their size.
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Saving and Restoring our Seagrasses
Threats to Seagrass
Nearly 80% of all seagrasses in coastal Alabama have been lost since the 1950s.
A constant threat to seagrass beds is scarring created by boats' propellers and anchors. When boaters navigate across shallow areas or anchors. In seagrass beds, deep scars are created that can take years to recover, leading to erosion and further loss of seagrass. Poor water quality is also a major factor that poses a serious threat to the health of seagrass. For example, excessive sediments in the water limit the light perpetration necessary for plant survival.
How can we protect our seagrasses?
What are we Doing?
To help propeller scars heal and protect seagrass beds from further scarring, local partners are implementing protection and restoration projects throughout lower Perdido Bay, including Little Lagoon, the island near Perdido Pass and Ole River.
No motor and sensitive seagrass area signs will identify seagrass beds to help boaters navigate through or around shallow water sites containing seagrass.
The scientist is using bird stakes to attract local waterfowl whose guano deposits will provide natural fertilizer to the propeller scars to promote the growth and expansion of surrounding seagrass.
What can you do?
Be aware of idle or raised motors and poles when navigating through shallow areas.
Set anchors in sandy areas, avoiding seagrass beds.
Obey No Motor Zone or Sensitive Seagrass areas signs: wade, troll, pole, or kayak when navigating through these areas to your favorite fishing or beach spot.
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Seagrasses Coastal Nursery Habitats
What are seagrasses
Seagrasses are flowering plants that live in the shallow waters of every continent except Antarctica.
Seagrass beds containing shoal grass and turtle grass are found in Alabama's calm and shallow coastal waters.
Why are seagrasses important?
Seagrass beds provide food and protection for juvenile fish and shellfish, including many economically important species such as speckled trout, redfish, blue crabs, and shrimp.
Many types of waterfowl feed on seagrasses, as do threatened and endangered species, such as manatees and green turtles.
Seagrasses help stabilize bottom sediment, filter runoff, and absorb nutrients from surrounding landscapes.
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Alabama's Coastal Connection
Migratory Birds
In search of food and shelter
Each fall, millions of birds leave North America and cross the Gulf of Mexico to spend the winter in South and Central America and the island of the Caribbean. In the spring, they make the return flight to their Northern American breeding grounds. Alabama's Gulf Coast provides an important rest stop for these travelers. Stopover areas are a key element in maintaining bird populations.
With increased development along the entire Gulf Coast, tracts of diverse, forested lands such as these are disappearing.
Migratory species, as well as resident birds, use this diverse landscape for foraging, resting, and evading predators. Birds must find enough food to provide energy for the long-distance flight to nesting sites far north. Migratory butterflies are dependent on food such as paw, paw, and passion flower larval growth. Songbirds feed on insects and berries, while shorebirds hunt for invertebrates in the mudflats.
The western end of the Fort Morgan peninsula is an important stopover site for migratory birds and has become a nationally known hotspot for birders. When adverse weather forces birds to the ground during a spring "fallout," the birding can be spectacular, although treacherous for the exhausted birds that must find a safe place to recover.
Bird species commonly seen during migration include vireos, warblers, flycatchers, buntings, and hummingbirds, The Monarch butterfly migration can also be breathtaking during fall when weather conditions are favorable.
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Alabama's Coastal Connection
Permeable Parking
A better way to go
Combined sewer systems are remnants of the country's early infrastructure, and so are typically found in older communities. Combined sewer systems are designed to collect rainwater runoff, domestic sewage, and industrial wastewater in the same pipe. Most of the time, combined sewer systems transport all of their wastewater to a sewage treatment plant, where it is treated and then discharged to a water body. Heavy rainfall adds stormwater so that the wastewater volume in a combined sewer system exceeds the capacity of the system.
Combined sewer systems are designed to overflow occasionally and discharge excess untreated wastewater directly to nearby streams, rivers, or other water bodies.
These combined sewer overflows also contain untreated human and industrial waste, toxic materials, and debris.
The expansion of impermeable surfaces associated with urban sprawl and automobiles has so increased the stormwater volumes that the combined systems are being separated at great expense. The result is that stormwater runoff that used to receive treatment at the plants is now being delivered to receiving streams and coastal estuaries like Mobile Bay.
Water running off of roads, bridges, and parking lots has been estimated to be the largest volume of untreated wastewater in this country. Even twenty years ago, the Federal Highway Administration estimated that 25 million tons of rubber wear off the nation's tires every week -50 tons/week in Alabama. Since rubber is biodegradable, the process of biodegradation consumes oxygen when it occurs in streams and estuaries. Also of concern are the heavy metals found in steel-belted radial tires, oil, antifreeze, or even transmission fluid.
The parking lot at the Estuarium allows all stormwater and associated contaminants to percolate down through the gravel, providing an enormous surface area for microbial treatment of the waste, returning it to the water and carbon dioxide. Any contaminated waste that remains cannot reach the shallow freshwater aquifers that lead either to the Bay or Dauphin Island community wells because an impermeable membrane four feet down traps it and sends it through a filter system that removes the hydrocarbon contaminants. The water and any overflows of the system then flow into a detention pond where the vegetation, including the common cane and other plants, remove any nutrients that contribute to low dissolved oxygen levels in the Bay.
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Sunday, February 11, 2018
Alabama Coastal Connection, Wetland Birds, Dunes, Barrier Islands & Butterflies
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Wetland Birds
The tidal marshes of Alabama feed a rich bird community. The newly created salt marsh is a prime feeding habitat for herons, egrets, pelicans, terns, sandpipers, and blackbirds. As the arch matures, the diversity and abundance of birds will increase.
At least Sandpiper (Calidris minutilla)
The marsh at low tide brings sandpipers moving in unison across the wet sand areas.
Snowy Egret (Egretta thula), American Egret (Casmerodius albus), Great Blue Heron (Ardea Herodias)
The Snowy Egret, American Egret, and Great Blue Heron feed on fish and invertebrates from the marsh.
Least Tern (Sterna antillarum)
The open sand dune area provides primary nesting sites for the Least Tern, which have been threatened with habitat loss.
Brown Pelican (Pelecanus occidentalis)
Old pilings in the water provide a resting site for Southern Brown Pelicans, which once were near extinction in this area.
Ruddy Turnstone(Arenaria interpres)
Cruising along the rock is the Ruddy Turnstone. This bird turns over oysters and clam shells in search of food.
Black Skimmer (Rynchops niger)
Gifted with a graceful wing beat and beautiful coloration, the Black Skimmer grazes along the surface of the water in search of fish.
The large (Phragmites) to the East of the marsh are utilized for nesting by Red-Winged Blackbirds and Boat-tailed Grackles.
Boat-tailed Grackle (Quiscalus major) Red-winged Blackbird (Agelaius phoeniceus)
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Barrier Islands
Shaped by Wind and Water
Sea levels began rising 18-20,000 years ago, moving sandbars toward the mainland. The rate of rise slowed 6,000 years ago, allowing the sandbar to emerge as the present barrier islands.
The dune land plants stabilize the wind-blown sands, building ridges and mounds called dunes in the highest areas of the beach, dunes are very important because as a storm attacks a beach, water and gravity roll the sand downhill away from the dunes.
This builds up an offshore sandbar, absorbing energy from the waves of the storm and protecting what is left of the beaches and dune lands.
After the storm, the offshore bar provides sand for rebuilding the beach.
Barrier islands perform two functions:
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Alabama Coastal Connection
Dune Plants survive in a harsh environment.
Adaptation allows plants to survive salt and freshwater flooding, extreme high and low temperatures, and hurricane-force winds.
These plants reproduce from cuttings created by storms and wave action. They all rebuild the beach and dune system by trapping wind-b town sand.
Sea Rocket (Cakile constricts)
A common succulent found just above the high tide line, Sea Rocket has thick fleshy leaves to help conserve water.
Large leaf Pennywort (Hydrocotyle bonariensis)
A creeping perennial that spreads by far-reaching underground stems, Pennywort grows to about 6 inches tall and has clusters of tiny white or pale-green flowers on a 3-inch stem.
Coastal Panicgrass (Panicum amarulum)
A dense, upright perennial bunchgrass, Panicgrass helps anchor the shifting sands with deeply buried root systems.
Sea Oats (Uniola paniculata)
As the most important and widespread grass on southern coastal dunes, the Sea Oats' recovery following storm impact is the first step in dune rebuilding.
Morning Glory (Ipomoea stolonifera)
This vine, with trumpet-shaped, white flowers, grows low to the ground, escaping the killing effects of salt spray. The stems may extend over the sand surface for 30 to 50 feet.
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| Butterflies of Dauphin Island |
Dauphin Island Marsh and Wetlands
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Whether the Weather
Look for the weather station seen in the photo below. It is maintained by the Dauphin Island Sea Lab, along with several others in and around Mobile Bay.
What does this Station Measure?
Atmospheric measurements:
>air temperature
>relative humidity
> Wind direction and speed
>air pressure
>solar radiation
>precipitation
Underwater measurements:
>water temperature
>water level
>salinity
>dissolved oxygen
>chlorophyll
>turbidity
How is the Data Used?
These data can be used in many different ways. Here are just a few examples: Researchers at Dauphin Island Sea Lab might use them to better understand phenomena such as low-oxygen events that result in fish kills in Mobile Bay. Climate scientists might input the data into a model that will predict sea level rise. It might be used to analyze hurricane strength as the storm passes the station.
Who is NOAA?
“NOAA” stands for National Oceanic and Atmospheric Administration. The U. S. Government formed this scientific agency in 1970. It has many responsibilities, including research into Earth’s weather, climate, and oceans, issuing daily weather forecasts and severe storm warnings, and providing citizens, planners, emergency managers, and policymakers with reliable information when they need it. Some NOAA offices that you may be familiar with include the National Weather Service, the National Marine Fisheries Service, and the National Ocean Service.
What is a Computer Model?
You might be familiar with weather or storm prediction models that are used by the forecasters on your local news stations. Computer models are algorithms that use the measured data to make simulations of systems. The simulations might make predictions or illustrate predictions that have already happened.
The speed at which computers can process numbers has made the use of models possible on a practical level. Accuracy depends on the quality of understanding of natural processes in different systems, and algorithms of simulating systems are all improved. The more data that goes into a model, the more precise it can be.
The image below left shows a computer model’s prediction of storm surge from Hurricane Ivan.
This kind of prediction is used to issue warnings to residents of areas that are expected to flood.
The image below the middle shows the measured track of Hurricane Ivan. Its landfall was 30 miles east of what was predicted. One major limitation forecasters have to work with is incomplete data coverage, especially over the oceans. Much of the needed data is only collected by data boys at a few points on the surface of the ocean.
The image below right was created with measured data, not to make a prediction but to illustrate the actual storm flooding from Hurricane Ivan.
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Invertebrate Trail
The invertebrate trail is an action based on the award-winning Public Broadcasting system series “The Shape of Life.”
These plaques represent 8 different Phyla, or groups of invertebrate animals with specific body plans, from simple to complex. Each phylum appeared in the oceans during the Cambrian Period, about 530 million years ago. These plaques are designed so that students can make a rubbing of each one to study in the classroom.
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The Living Marsh
Dedicated to the Memory of Beth Ladner; 1974-1991
“ A Teacher’s Friend” Discovery Hall Student 1985, 1989, 1990
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Research on March Restoration at Dauphin Island Sea Lab
Salt marshes are among the most productive ecosystems on earth.
They provide food, refuge, and user habitats for many animals, filter runoff that drains into our coastal waters, and buffer our coastlines from damaging storm surges. Salt marshes are declining at an alarming rate due to coastal development and erosion brought on by environmental stress.
The devices installed in the Living Marsh are called flume traps. They are part of a study designed to determine how closely the ecology of this created marsh mirrors that of a natural marsh also located on Dauphin Island (above). The flume traps sample animals that enter the vegetation to forage and hide from predators.
Flume traps allow the animals to enter the marsh vegetation as the tide rises (A, Above center). The trap is closed at high tide (B), and as the tide goes out, fish, crabs, shrimp, and other animals are collected in the net.
We then identify and count the animals we catch in the created marsh and compare them to the animals caught in the reference marsh.
We also compare the animals that live in the mud and among the roots of the marsh grass by taking cores from the marsh bottom (below). These small animals, many of which require a microscope to see, including worms and small shrimp, burrow into the sediment.
We also compare how the animals interact with each other in the retired and natural marshes. We are particularly interested in how intensely blue crabs feed on marsh periwinkles (see below) We teeter snails to the bases if marsh-grass shoots at each marsh and allow crabs to attack and eat the bait during a set period. We also compare the number of repaired shell cracks (signs of failed attacks by crabs) in the snail populations at each site. This allows us to compare how intensively crabs are using resources in the marsh.
We hope this research will help us understand how new marshes develop over time and what we can do to help newly created marshes provide all of the benefits of natural salt marsh habitats.
Above: Periwinkles climbing on marsh grass
Upper Right: Blue crab
Right: Snail tethered to marsh grass and (inset) shell scar inflicted by the blue crab. Marked by the arrow.
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