1. Little Lagoon Preservation Society
Water Quality Initiatives

2. What are we doing ?
Little Lagoon is a unique body of water that all of us enjoy in a variety of ways. Swimming, fishing and boating are just a few of the activities that we enjoy.
But we also have stewardship over a precious resource that needs to be preserved.
We have begun to work with the scientists from Dauphin Island Research Center, as well as some of the NOAA programs, to understand the challenges and create programs to keep Little Lagoon healthy.

3. How do we do this ?
We have begun to sample the water in four strategic locations.
The samples are processed and the data collected is shared with the scientific community.
There are two major areas of focus
Water Quality (Chemical and Bacteriological)
Phytoplankton and Microorganisms
Once we have baselines, we can clearly spot trends in the quality and make better decisions on preservation.

4. We have Help, and we need to thank some special people
Dr Hugh MacIntyre and the scientists at Dauphin Island Sea Lab. He and his team have provided expertise and equipment to make this successful.
Allison Sill, Program Coordinator, Phytoplankton Monitoring Network (PMN) who in addition to running an excellent class, found a way to get us a MIC-D a bit out of order !

5. And of course, our Volunteers!
Back to school for Training on Water Chemistry and Sampling
Training on Phytoplankton
Hours of collection and processing time

6. Building a base line, Watching for trends
The concept is simple; Create a baseline of chemical and biological information so we can assess the health
Samples collected every 2 weeks
Measurements are taken and recorded
Samples are filtered and packaged for Sea Lab
Phytoplankton are identified and counted
Once we have baselines, we can make better decisions

7. Water Quality Speakers Agenda
What are we discussing
Who Leads the Discussion
Time Allotted
Phytoplankton – Finding the Evil Princess or a Tootsie Roll
Lucie Novoveska 15
Mapping Water Quality in Little Lagoon
Kirstin Hartzell
Hidden Neighbors - Life under the surface of the Lagoon
Bill Dickenson 10
An Update from Dr Hugh MacIntyre
Dr Hugh MacIntyre
Red Clay : A Pox on our Snow White Beaches
Dennis Hatfield
Upcoming Activities
Valerie Dickenson 5

8. Phytoplankton – Finding the Evil Princess or a Tootsie Roll Lucie Novoveska

9. What are phytoplankton ?
Phytoplankton are microscopic plants that live in the ocean. There are many species of phytoplankton, each of which has a unique shape.
Phytoplankton grow abundantly in oceans around the world and are the foundation of the marine food chain.
Phytoplankton depend upon certain conditions for growth and they are a good indicator of change in their environment.
For these reasons, and because they also exert a global-scale influence on climate, phytoplankton are of primary interest to oceanographers and Earth scientists around the world.

10. Moving up the Food Chain
Problems at the bottom of the food chain, affect the top, but magnified by 10
Knowing the condition of the Phytoplankton will help us identify a change

11. Red Tide Fish Kill Caused by Karenia brevis
Toxin: Brevetoxin

12. Human Illness Associated with Harmful Algae
Neurotoxic Shellfish Poisoning (NSP) Brevetoxin Karenia brevis
Amnesic Shellfish Poisoning (ASP) Domoic acid Pseudo-nitzschia sp.
Ciguatera Fish Poisoning (CFP) Ciguatoxin/Maitotoxin Gambierdiscus toxicus
Diarrhetic Shellfish Poisoning (DSP) Okadaic acid Dinophysis sp.
Paralytic Shellfish Poisoning (PSP) Saxitoxins Alexandrium sp.

13. Mahogany Tide: Hypoxia Caused by Prorocentrum Bloom
Density: 1.4 billion cells/liter 13

14. What causes these blooms?
Light
Temperature
Nutrients
Eutrophication- increasing nutrients in a system
Pollution
Agricultural runoff- high nitrogen containing fertilizers
The increased input of nutrients leads to an
enrichment of nitrogen and phosphorus relative
to silica. This decreases the Si/N ratio favoring
Pseudo nitzschia blooms (Bates et al, 1998) 14

15. ASP-Domoic Acid Poisoning
Toxin produced by diatom Pseudo-nitzschia
Both gastrointestinal and neurological disorder
In humans symptoms include nausea, vomiting, abdominal cramps,
diarrhea and dizziness, headache, seizures, disorientation, short-term
memory loss, respiratory difficulty, coma, and death
In seal lions, birds, and dolphins- vomiting, diarrhea, confusion,
disorientation, scratching, seizures, coma, and death 15

16. Episodes of human, marine mammal, and sea bird mortality events
1987- human poisoning event, Prince Edward Island, 107 people ill and four dead
1988- toxin traced to Pseudo-nitzschia
1991 and bird kills, Pelicans and Cormorants in Monterey Bay
1991 and contamination of Washington razor clams and Dungeness crab in California
1998- Sea lion deaths in central California
2002- Santa Catalina Island- Sea Lion deaths 16

17. April 29, 2005
September 16, 2005
Warning species, cooccurence, community changes, one site water quality? 17

18. Southeast Phytoplankton Monitoring Network
Northern Gulf of Mexico Region
SEPMN is an outreach program with the ultimate goal of linking laboratory scientists to the general public. Traditionally scientists rarely interacted with the public they serve.
To monitor area along the coast throughout the year
To identify general trends, such as time and area, where blooms occur
To promote increased awareness and education to the public
To create a working relationship between volunteers and researchers
SEPMN web site:

19. LLPS Volunteers Efforts
LLPS monitors 4 sites bi-weekly
water quality
E.coli counts
phytoplankton counts
Evil Princess and Tootsie Roll
Dinoflagellate- Dinophysis sp,
Diatom- Ditylum 19

20. Phytoplankton in Little Lagoon
Pleurosigma
Pseudo-nitzschia
Nitzschia
Chaetoceros
Prorocentrum
Pyrophacus
Guinardia
Protoperidinium

21. Water Quality Mapping of Little Lagoon, Alabama
Kirstin Hartzell
REU Dauphin Island Sea Lab
Baylor University

22. Purpose To determine spatial characteristics of water quality
Physical characteristics: Temperature, Salinity
Chemical characteristics: Nitrogen, Phosphorus
Biological characteristics: Chlorophyll
Infer possible sources of nutrients to the lagoon
To better understand what is going on in the lagoon

23. Methods 25 transects were taken zig-zagging down the lagoon
3 sampling trips were completed
50 discrete points were taken and analyzed
Nutrients
Total Nitrogen
Chlorophyll
Total Phosphorus

24. Methods
Continuous data was gathered using a flow- through instrumentation (physical and optical)
GPS data was gathered during the entire cruise
All data was then imported into ArcGIS and mapped

25. Temperature & Salinity, 6/27/07

26. Total Nitrogen, 6/27/07
Nitrogen is being highest in the ends of the lagoon
Low values near pass indicate dilution and flushing
Nitrogen is high compared to Mobile Bay and nearshore Gulf of Mexico: vs mM

27. Total Nitrogen vs Salinity, 6/27/07
Distinct pattern in TN vs S indicates distinct water-masses within the lagoon
This indicates poor mixing and flushing

28. Chlorophyll reflects nitrogen levels

29. High nitrogen translates to an accumulation of microalgae
This can only happen in a poorly-flushed system
Where the nitrogen levels are high, so are the chlorophyll levels

30. Summary (preliminary…)
Little Lagoon was poorly flushed
Nutrients (nitrogen and phosphorus) were highest at the ends of the lagoon
Algal biomass was highest in areas where nutrients were highest

31. Microalgal populations in Little Lagoon and adjacent waters
Hugh MacIntyre
Dauphin Island Sea Lab

32. High diversity in Little Lagoon indicates low mixing/flushing
Contiguous shaded areas: similar at 60% by cluster analysis. Same color shaded areas: similar at 40% by cluster analysis.

33. Minor exchange through the pass
Contiguous shaded areas: similar at 60% by cluster analysis. Same color shaded areas: similar at 40% by cluster analysis.

34. …and E-W differences in populations within the lagoon
Contiguous shaded areas: similar at 60% by cluster analysis. Same color shaded areas: similar at 40% by cluster analysis.

35. Nutrient levels in the lagoon are high for saline waters

36. This may be cause of high Pseudo-nitzschia numbers at Little Lagoon Pass
Data: DISL, ADPH & ADEM

37. Hidden Neighbors – Life Under the Surface of the Lagoon
Bill Dickenson

38. Looking at Life Under the Surface
3 Guests today
Schoolmaster
Pin Fish
Brown Shrimp
We will discover what they eat.
Simple Rules : “You can tell what they eat, by their fins and their Teeth”

39. School Master – Growing up in Little Lagoon
Description: Olive gray on upper sides with yellow tinge, sometimes with reddish tinge around head; long triangular snout; eight pale vertical bars on the side of the body; yellow fins; blue stripe below eye, becoming interrupted in adults; no dark lateral spot.
Where found: juveniles in grassy flats; adults nearshore, especially around Elkhorn coral reefs; large adults sometimes found on continental shelf.
Size: usually less than 1 pound.
Conclusion : A hunter who needs to turn quickly !
Favorite food: feeds on Shrimp, Crabs other crustaceans, small fishes.
So what do you think
they eat ?
Hint:
Mouth: Bottom with distinct teeth
Fins: Big fins on sides and bottom

40. Conclusion : Eat everything I can !
Pin Fish – Stealing Bait is my Favorite thing ! (Being bait is not my favorite thing)
Description: small mouth with incisor-like teeth; distinctive black spot behind the gill cover; body bluish-silver with blue and orange-yellow horizontal stripes, yellow fins.. Where found: seagrass beds, bridges, piers, marker pilings, and around natural and artificial reefs; spawn offshore.
Size: usually less than 8 inches.
So what do you think
they eat ?
Conclusion : Eat everything I can !
Favorite food: Whatever is available. I can eat live food, scavenge and even plants.
Hint:
Mouth: Smaller mouth but still on the bottom with lots of small teeth.
Fins: Smaller fins on sides and bottom

41. Brown Shrimp – From the Lagoon to the World !
So what do you think
they eat ?
Description: Burrowing shrimp, common in Florida waters. Antennae are significantly longer than body length. Normally brown to olive-green appearance, though both red and green specimens of this species have been found. Brown shrimp are commonly found in estuaries along coasts. Primary habitats for these shrimp are muddy bottom areas from the intertidal zone. They have 3 pairs of legs for eating, 5 pair for walking and 5 pair for swimming (swimmerts)
Conclusion : Dig, Eat and runaway fast !
Favorite food: An opportunistic omnivore that eats some algae as well as small invertebrates, leftover fish, whatever it can find
Hint:
Mouth: Small “pincers” that tear small pieces.
Fins (well; Feet actually): On the bottom, lots of them and a big tail “flipper”

42. Red Clay: A Pox on our Snow White Beaches!
Dennis Hatfield, President LLPS

43. How did our beaches get so white?
Our beaches are special! % snow white, pure quartz sand, with no natural clay, and a very small (.03%) percentage of dark iron and titanium rich heavy minerals
The source materials for the “Miracle Strip” are quartz and feldspar rich granites from the Appalachians
The quartz sand rich Miracle Strip is a “mature” product of numerous repeated episodes of erosion, and deposition. Physical transport and chemical weathering have removed all less resistant minerals and left only the quartz
Microscopic examination of individual sand grains tells a story. The sand is well sorted, and each grain is almost perfectly rounded, frosted, polished, and pitted

44. A “River of Sand” brings us our Sand From Apalachicola
Mobile Bay delivers a tremendous volume of distinctly different sediment to our coast compared to “Miracle Strip” sediments derived from Fla
A “river of sand” flows from Apalachicola to the mouth of Mobile Bay
The Fort Morgan Peninsula forms a barrier which effectively separates Mobile Bay sediments from “Miracle Strip” sediments

45. Red Clay on the Miracle Strip is like a “Road Alligator”
If we want Lagoon waters to remain relatively clear, and lagoon and beach sand to remain unique/special/white we have to say no to importing any and all red/yellow materials onto Pleasure Island
Clay is both a textural and mineralogical term-clay minerals and sized particles are 1/256 MM and smaller
Sediments turn yellow or red because the iron contained in them is “oxidized”
Oxidized clay sized sediment is very mobile-easily transported by water and wind
A small amount of oxidized iron rich material can stain a large amount of pure white sand for a long time, and once it is in our special pure white quartz sand environment, it can do damage over and over again

46. Red Clay is Illegal along the Fort Morgan Road
Uses:
Inexpensive (short term) road bed and house pad material
Inexpensive (short term) fill and grade material
Gulf Shores recently passed ordinance prohibiting colored materials for use south and in large areas north of the Fort Morgan Hwy
Code enforcement is currently lacking, numerous examples exist of code violations since new code passed
We (LLPS) can help by educating/understanding code, reporting code violations and following up to see that code is enforced, and violations punished

47. Future Plans – And what you can do to help !
Valerie Dickenson

48. Future Initiatives We can always use more volunteers
We can teach you what you need to
No special skills except a willingness to follow a process to the end
Three volunteer activities
Collecting water samples
Filtering water
Identifying plankton
Other ways to help
Expand our Membership! We need more people involved and interested to help preserve Little Lagoon!
Educate your neighbors!