Potential food resources in the Suwannee River Estuary for juveniles of the threatened Gulf Sturgeon, Acipenser oxyrinchus desotoi. Allen Brooks Ken Sulak.

Slides:

Advertisements

Similar presentations

Liège 2008 Multi-scale spatial variability of amphipod assemblages from the foliar stratum of the Posidonia oceanica (L.) Delile meadow Nicolas Sturaro.

Advertisements

Long-Term Studies in Port Valdez, Alaska Long-Term Studies in Port Valdez, Alaska A. L. Blanchard, Howard. M. Feder, Carrie Parris and Hilary Nichols Institute.

NASSCO and Southwest Marine Sediment Investigation Preliminary Results Thomas Ginn, Ph.D. Dreas Nielsen June 18, 2002.

U.S. Department of the Interior U.S. Geological Survey Amphipod Density as a Biological Indicator of Wetland Quality in the Prairie Pothole Region of North.

Fishing down marine food webs: an index of fisheries impact on ecosystems by Daniel Pauly Fisheries Centre, University of British Columbia Vancouver, Canada.

Status of macrobenthic communities in the Manifa-Tanajib Bay System (Saudi Arabia), fifteen years after the 1991 oil spill T.V. Joydas 1*, Mohammed Qurban.

Riparian Management and Fish Productivity Peggy Wilzbach and Ken Cummins USGS CA Cooperative Fish Research Unit Humboldt State University.

Preliminary observation of environmental factors around offshore cage system in Jeju island 18 th July 2005 Won Chan Lee, Rae Hong Jung, Hyun Taik Oh.

Estuaries and Fish Ecology Tim Essington School of Aquatic and Fishery Sciences.

Horseshoe crab (Limulus polyphemus) larvae abundance and distribution: patterns in a small estuary Jaymie Frederick 1, Ken Able 2, Rosemarie Petrecca 2.

Interactions of Top Down and Bottom Up Forces and Habitat Complexity in Experimental Oyster Reef Microcosms William S. Rodney, Lisa Kellogg & Kennedy T.

Abstract Organismal lipid content has been used as an indicator of habitat quality and has potential for use in the development of oyster reef restoration.

Karen Kesler, Vincent Politano, Kennedy Paynter Differentiating the impact of the physical and biotic components of the eastern oyster, Crassostea virginica,

(1) Assess benthic faunal colonization on banks (2) Assess trophic status of restored salt marshes Levin Lab Benthic Studies Goal: Develop metrics for.

Potential Approaches Empirical downscaling: Ecosystem indicators for stock projection models are projected from IPCC global climate model simulations.

Seagrass Ecology Estuarine seagrass ecosystems in North Carolina and Florida.

“Meso-Marine Ecosystems”: Management Units for the North Pacific? W. Sydeman 1, S. Batten 2, D. Hyrenbach 1, M. Henry 1, C. Rintoul 1, D. Welch 3, K. Morgan.

Zooplankton processes Puget Sound Oceanography Jan. 28, 2011.

Flower Garden Banks – A Refuge in the Gulf of Mexico? Emma L. Hickerson, George P. Schmahl, Michelle A. Johnston, Marissa F. Nuttall, John A. Embesi, and.

Benthic Analysis: Mr. Ingle’s Pond X Group Tarah Johnson McClure Tosch Stephen Wells Lance Keller.

Predicting the occurrence of bluefin tuna (Thunnus thynnus) larvae in the Gulf of Mexico.

Habitat Use and Substrate Preference of Eastern Sand Darters in Vermont Shannon O’Brien and Douglas E. Facey Department of Biology, Saint Michael’s College.

Blue Lake R.V. Resort Samuel Torp, Simon Peterson, and Suzette Frazier Photo by Steve Johnson.

Suwannee River Basin and Estuary-- Integrated Science Workshop  SR originates in the Okeefenokee Swamp, changing dramatically as it moves downstream,

Utilization of Benthic Invertebrates as Salinity Indicators in South Florida Rivers, Lessons from the Peace and Alafia Rivers Utilization of Benthic Invertebrates.

Spatial and temporal variation in stock abundance of queen conch, Strombus gigas, in the US Virgin Islands Research conducted by Gordon & Tobias Department.

Zooplankton in Ships Entering Puget Sound

Secondary Production of Infaunal Benthic Communities in Chesapeake Bay in Comparison to Restored Oyster Reefs Amanda Lawless and Dr. Rochelle Seitz Virginia.

Role of Tidal Saltwater Habitats for Juvenile Salmonids (Myths vs Reality in the Columbia River Estuary) Ed Casillas NWFSC, Seattle, WA (Contributors –

Influence of Salinity and Freshwater Inflow on the Recruitment of Commensal Decapod Crustaceans to Oyster Reefs in Estero Bay, Florida Bethany M. Bachelor.

Option G: Ecology and Conservation Chpt. 18: pages

Gulf Sturgeon – The Central Role of an Iconic Species in the Suwannee River Initiative Gulf Sturgeon – The Central Role of an Iconic Species in the Suwannee.

By E.I. See Montgomery County Public Schools, Maryland Grade 4 Integrated Curriculum 2012.

The feeding ecology and physiology of vagrant Chaetodon species on temperate New South Wales reefs Marcus A Gregson Dept Environmental Sciences Institute.

Benthic Community Assessment Tool Development Ananda Ranasinghe (Ana) Southern California Coastal Water Research Project (SCCWRP) Sediment.

Impacts of hypoxia on key benthic infauna and their predators in Chesapeake Bay Rochelle D. Seitz & W. Chris Long Virginia Institute of Marine Science,

Assessing Linkages between Nearshore Habitat and Estuarine Fish Communities in the Chesapeake Bay Donna Marie Bilkovic*, Carl H. Hershner, Kirk J. Havens,

A GLOBAL PERSPECTIVE ON THE LINKAGE BETWEEN EUTROPHICATION AND HYPOXIA Robert Diaz College of William and Mary Virginia Institute of Marine Science

By Dr. Estee Yong Siek Ting

Jennifer M. Marsh M.S. Fisheries Student School of Fisheries and Ocean Sciences University of Alaska Fairbanks.

Christopher Ballew 1, Patricia Ramey 2 1 Department of Biology, Central College, 812 E University, Pella, IA Institute of Marine and Coastal Sciences,

Development of Sediment Quality Objectives for California Bays and Estuaries Project Update Steven Bay Southern California Coastal Water Research Project.

Indirect Effects of Current Velocity on Algal Abundance Through Interactions with Ceratopsyche Larvae Sarina Rutter with faculty mentor Todd Wellnitz Department.

Background to Foraging. C.S. Buzz Holling aka "the man" Functional response was developed based on a 1959 paper These eating These.

VocabularyAppearanceHabitatFeedingRecovery.

Ecosystem Structure Pg

Ecological Characteristics and Forcing Functions of the Suwannee River Estuary Randy E. Edwards 1 and Ellen A. Raabe 2 1 – University of South Florida,

Coastal America Foundation Buzzards Bay, MA Climate Change Benchmarking.

Janet Garcia Ayesha Burdett

DRV/RH/Ecohal The influence of climate change on commercial flatfish populations in the Bay of Biscay O. Le Pape, D. Guérault and Y. Désaunay Bergen ICES.

OMSAP Public Meeting September 1999 Nearfield Hard-bottom Benthic Communities Barbara Hecker Hecker Environmental September 23, 1999.

Introduction Many species of fish use Great Lake Coastal Wetlands (GLCW) at some point during their lives. Shorebirds use GLCW as stopover points during.

Polsko-Norweski Fundusz Badań Naukowych / Polish-Norwegian Research Fund Paweł Prus Inland Fisheries Institute BENTHIC MACROINVERTEBRATES IN LAKES: PROFUNDAL.

Diets. Why are diets important? What information do they tell us? What questions do they answer? Fish’s view –Source of energy (bioen) Managers view –Stocking.

Great Lakes Environmental Research Laboratory Review – Ann Arbor, MI November 15-18, Click to edit Master text styles –Second level Third level.

Bart Christiaen Jaime Miller. Outline  Background Information  Survey Sites  Questions + Methods  Results  Inferences  Conclusions.

Vertical Distribution of Larvae off the Coast of Assateague Island, Virginia Carlee Kaisen Department of Biological Sciences, York College of Pennsylvania.

Initial Assessment of Habitat Use by Stocked Lake Sturgeon in the Genesee River D. E. DITTMAN 1 and E. C. ZOLLWEG 2 1 Tunison Laboratory of Aquatic Science,

Climate Change Impacts on Estuarine Larval Fish Composition Jamie F. Caridad and Kenneth W. Able Institute of Marine and Coastal Sciences. Rutgers University.

HABITAT COMPLEXITY AND EDGES ON SEAGRASS EPIFAUNAL COMMUNITIES

William S. Rodney, Lisa Kellogg & Kennedy T. Paynter

Block Island, Horseshoe Crab Paradise?

Block Island, Horseshoe Crab Paradise?

Assessing oyster reef habitat value through naked goby

Estuarine seagrass ecosystems in North Carolina and Florida

Secondary Production of Infaunal Benthic Communities in Chesapeake Bay in Comparison to Restored Oyster Reefs Amanda Lawless and Dr. Rochelle Seitz Virginia.

Food and Feeding Habits of Shell Fishes in Indian Water

Food and Feeding Habits

Typology and classification of coastal waters in Estonia

Student Center A South: Inaccessible Element

Presentation transcript:

Potential food resources in the Suwannee River Estuary for juveniles of the threatened Gulf Sturgeon, Acipenser oxyrinchus desotoi. Allen Brooks Ken Sulak Coastal Ecology & Conservation Research Group U.S. Geological Survey

OBJECTIVES Discuss the spatial distribution and abundance of benthos in the Suwannee River Estuary. Discuss which areas within the estuary are potentially most important in providing food resources for juvenile Gulf Sturgeon.

Suwannee River Estuary

STUDY AREA EAST PASSWADLEY PASS WEST PASS NORTH SOUND SOUTH SOUND

Sample Site Selection A grid (100 m centers) was placed over the entire study area. 156 random sites were selected for sampling in June-July 2002

SAMPLING STATIONS June 2002

Sampling Methods Benthic Core –15 cm in diameter (0.018 m 2 ) and 15 cm deep –0.5 mm mesh sieve Laboratory Methods -Fauna abundance -Sample dry wt. ( hrs)

No Sig. Diff. *

Benthos Density (m 2 )

BIOMASS (g/m 2 )

64.7% 15.8% Percent Composition of Major Taxa 5.2% 3.3% 3.4% 7.6%

Amphipod Density (m 2 )

Polychaete Density (m 2 )

How Does the Suwannee Compare?

Objective 2: WHAT’S FOR DINNER?

Principal Foods for Juvenile Gulf Sturgeon Huff, Prefer non-tube building amphipods, isopods, insect larvae and mud shrimps Mason & Clugston, Prefer non-tube building crustaceans and insect larvae - Do not prefer organisms with a hard carapace or shell Heard et al., Prefer non-tube building amphipods

Food Categories based upon Gut Content Analysis Principal Foods: Free Living AmphipodsShrimp IsopodsOligochaetes Insect LarvaeBrachiopods Secondary Foods: Tube DwellingNemerteans Amphipods PolychaetesNematodes CumaceansAnthozoans Ostracods Minor Foods * : OphuiroidsGastropods BivalvesDecapods * No taxa were excluded from all categories.

Principal Food Density

Biased Density Biased Density = [(1.0*Principal Food/m 2 )+(0.66*Secondary Food/m 2 ) +(0.33*Minor Food/m 2 )]

Biased Density

Adjusted Biomass = Overall Biomass* Food Index Food Index = Biased Density / Total Density The goal is to include not only faunal density but an idea of energy as well.

Adjusted Biomass

Conclusions The density of benthic macrofauna in the Suwannee River Estuary is within the range of other estuaries around the Gulf of Mexico. The distribution of taxa is patchy within the estuary. The use of total density may not be the best method for predicting where juvenile sturgeon might be preferentially feeding.

Acknowledgements Ken Litzenberger, Refuge Manager Lower Swuannee National Wildlife Refuge, U.S. Fish and Wildlife Service Gerhard Pohle, Associate Director Atlantic Reference Centre