Introduction for NOAA lesson by Susan Kaiser, TAS 2012: One Fish, Two Fish

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This Power Point introduces the work of marine scientists working for FWC and NOAA as they study fish migration patterns and population off the Florida Keys near the Dry Tortugas. The original presentation was written by Danielle Morley and edited by Susan Kaiser Teacher at Sea, 2012 for use with the lesson she developed called One Fish, Two Fish. All of the resources are available at the NOAA TAS website.

Transcript of Introduction for NOAA lesson by Susan Kaiser, TAS 2012: One Fish, Two Fish

  • 1. Reef Fish Sampling in theReef Fish Sampling in the Florida KeysFlorida Keys by:by: Danielle MorleyDanielle Morley Edited for use at Pine Middle SchoolEdited for use at Pine Middle School by: Susan Kaiserby: Susan Kaiser NOAA Teacher at Sea 2012NOAA Teacher at Sea 2012 Florida Fish and Wildlife Conservation CommissionFlorida Fish and Wildlife Conservation Commission Fish and Wildlife Research InstituteFish and Wildlife Research Institute South Florida Regional LaboratorySouth Florida Regional Laboratory 2796 Overseas Hwy; Suite 119; Marathon, FL 330502796 Overseas Hwy; Suite 119; Marathon, FL 33050

2. Coral reef managers aroundCoral reef managers around the world have similarthe world have similar questions:questions: Are the coral reefs healthy?Are the coral reefs healthy? What are the threats impacting coral reefs?What are the threats impacting coral reefs? Are fish populations increasing orAre fish populations increasing or decreasing?decreasing? Are management actions successful?Are management actions successful? Is a marine protected area working?Is a marine protected area working? What is the level of satisfaction of theWhat is the level of satisfaction of the resource users?resource users? 3. This presentation gives a overview ofThis presentation gives a overview of some current research projects in thesome current research projects in the Keys. It also prepares you for aKeys. It also prepares you for a simulation activity in class.simulation activity in class. 4. FinfishFinfish ResearchResearch GroupGroup 5. Ocyurus chrysurus yellowtail snapper Commercially and RecreationallyCommercially and Recreationally Important SpeciesImportant Species Mycteroperca bonaci black grouper Lutjanus analis mutton snapper Lutjanus griseus gray snapper 6. Location, location, location!Location, location, location! Key West Dry Tortugas Florida Cuba Bahamas Key Largo 7. Overview of the Finfish ProgramOverview of the Finfish Program Several different programs study fish populationsSeveral different programs study fish populations throughout the entire Florida Keys reef track and coveringthroughout the entire Florida Keys reef track and covering various life stages.various life stages. SeiningSeining ProgramProgram Spawning AggregationSpawning Aggregation StudiesStudies Reef VisualReef Visual CensusCensus 8. Seine SurveySeine Survey 9. 21.3m offshore seine net with 3.2mm mesh Typical catch Mutton snapper Scientists count the fish found in shallow waterScientists count the fish found in shallow water 10. Reef VisualReef Visual Census (RVC)Census (RVC) Goal:Goal: Estimate population &Estimate population & community make upcommunity make up Method:Method: Stratified Random Sampling Data Collected:Data Collected: Showed >280 SpeciesShowed >280 Species Included all fish life stages & sizesIncluded all fish life stages & sizes 11. Methods: Stratified RandomMethods: Stratified Random 12. 15 m 5 minute count5 - 10 and >10 minute count Stationary Point CountsStationary Point Counts 7.5 m 13. Fish Spawning AggregationFish Spawning Aggregation (FSA) in the Dry Tortugas(FSA) in the Dry Tortugas Lutjanus analisLutjanus analis mutton snappermutton snapper Mycteroperca bonaciMycteroperca bonaci black grouperblack grouper Ocyurus chrysurusOcyurus chrysurus yellowtail snapperyellowtail snapper What are the population dynamics ofWhat are the population dynamics of those reef fishes in the Drythose reef fishes in the Dry Tortugas?Tortugas? Are there spawning migrationAre there spawning migration patterns?patterns? What type of fish movement occursWhat type of fish movement occurs between foraging grounds andbetween foraging grounds and spawning aggregation sitesspawning aggregation sites?? How do fish use habitats of the reefHow do fish use habitats of the reef environments and how long do reefenvironments and how long do reef fishes stay in the region?fishes stay in the region? 14. Since 2008: Yellowtail (18) Mutton snapper (56) Black grouper (36) Fish Surgery???Fish Surgery??? 15. Scientists must dive to service receivers a couple times a year. Sampling areas covered by the receivers included approximately 800km2 and are comprised of varying habitats. FSA Work in the Dry TortugasFSA Work in the Dry Tortugas 16. 83 05 83 00 82 55 82 50 244024352430 L. analisL. analis 69.2 cm 69.2 cm TNER TSER RNA DRTO May June July Spawning Corridor 17. No TakeNo Take No Take Home Range Estimate 18. Marine scientists will continue to collect data to better understand the fisheries in the Florida Keys National Marine Sanctuary. The new information they gather will help policy makers better manage these natural resources. In the next class meeting, YOU will simulate the process used by scientists in the spawning aggregation study to add to their data set and make future recommendations to resource managers. Future Research