Assessing the Chesapeake Bay Forage Base: Existing Data and Research Priorities. Scientific and Technical Advisory Committee Workshop.
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1 Assessing the Chesapeake Bay Forage Base: Existing Data and Research Priorities Scientific and Technical Advisory Committee Workshop Solomons, MD November 2014
2 What Managed Predators Should Be Our Focus? What Forage Species Are Most Vital to Consider / Manage? The Existing Data Chris Bonzek, VIMS Field and Lab Staffs for ChesMMAP, CHESFIMS, VIMS Trawl Tom Ihde, NOAA
3 Surveys: Data Sources ChesMMAP: Chesapeake Bay Multispecies Monitoring and Assessment Program CHESFIMS: Chesapeake Bay Fishery Independent Monitoring Survey VIMS Trawl/CTILS: Chesapeake Trophic Interactions Laboratory Services
4 Data Sources ChesMMAP: 2002 Present (Ongoing) Bottom Trawl Survey Design: Random Stratified Targets Late-Juvenile-to-Adult Fishes Bay Main-Stem (Baltimore to Bay Mouth) Five Cruises per Year (Mar-May-Jul-Sep-Nov) ~80 Stations per Cruise Counts-Biomass-Lengths-Sex-Maturity-Age-Diets (Nearly all species encountered)
5 Data Sources CHESFIMS: Midwater Trawl Survey Design: Combination Random/ Fixed Primarily Juvenile Fishes Bay Main-Stem (Baltimore to Bay Mouth) Three Cruises per Year (Spring Summer - Fall) ~40 Stations per Cruise Counts-Biomass-Lengths-Sex-Maturity-Age-Diets (Selected Species)
6 VIMS Trawl / CTILS: Data Sources VIMS Trawl: 1955-Present CTILS: Bottom Trawl Survey Design: Random Stratified Primarily Juvenile Fishes Bay Main-Stem and Major Rivers CTILS Samples From the Rivers Only Twelve Cruises per Year ~110 Stations per Cruise Counts-Lengths
7 Representative Species / Summaries Species: Baywide Piscivores: Summer Flounder Striped Bass Baywide Benthic Feeder: Atlantic Croaker Upper Bay Species: White Perch Lower Bay Species: Clearnose Skate Analyses Presented: Length Frequencies & Catch Maps By Survey if Available Diets: All Data Pooled By Survey if Available Diets: Annual Variability ChesMMAP Only Diets: By Size/Age By Survey if Available Diets: Upper v. Lower Bay ChesMMAP Only Diets: Variability of Main Forage ChesMMAP Only
8 Summer Flounder ChesMMAP VIMS Trawl / CTILS
9 Summer Flounder All Years/Months/Regions/Sizes ChesMMAP VIMS Trawl / CTILS
10 Summer Flounder Annual Variability
11 Summer Flounder Annual Variability
12 Summer Flounder Size/Age Variability Small (~Age-0) ChesMMAP VIMS Trawl / CTILS
13 Summer Flounder Size/Age Variability Small (~Age-0) Large (~Age-1 and older) ChesMMAP ChesMMAP VIMS Trawl / CTILS VIMS Trawl / CTILS
14 Forage Groups that Compose > 5% of Summer Flounder Diet in any Sample (ChesMMAP only) Percentage of Diet Forage Groups
15 Forage Groups that Compose > 5% of Summer Flounder Diet in any Sample (ChesMMAP only) Percentage of Diet Bay anchovy Mysids Sand shrimp Weakfish Spot Mantis shrimp Spotted hake Atl. croaker
16 Striped Bass ChesMMAP CHESFIMS VIMS Trawl / CTILS
17 ChesMMAP Striped Bass All Years/Months/ Regions/Sizes CHESFIMS VIMS Trawl
18 ChesMMAP ChesMMAP (no cluster) Striped Bass All Years/Months/ Regions/Sizes CHESFIMS VIMS Trawl
19 Striped Bass Annual Variability (ChesMMAP Only)
20 Striped Bass Annual Variability (ChesMMAP Only)
21 Striped Bass By Size/Age These Surveys Do Not Lend Themselves to This Analysis for This Species
22 Striped Bass Upper Bay v. Lower Bay (Proxy for Salinity) ChesMMAP ChesMMAP
23 Forage Groups that Compose > 5% of Striped Bass Diet in any Sample (ChesMMAP only) Percentage of Diet Forage Groups
24 Forage Groups that Compose > 5% of Striped Bass Diet in any Sample (ChesMMAP only) Percentage of Diet Bay anchovy Mysids Nereis spp. Menhaden Polychaetes Amphipods & isopods Weakfish Spot
25 Atlantic Croaker ChesMMAP CHESFIMS VIMS Trawl / CTILS
26 ChesMMAP Atlantic Croaker All Years/Months/ Regions/Sizes CHESFIMS VIMS Trawl
27 Atlantic Croaker Annual Variability (ChesMMAP Only)
28 Atlantic Croaker Annual Variability (ChesMMAP Only)
29 Atlantic Croaker By Size/Age Small (~Age-0) CHESFIMS VIMS Trawl / CTILS CMMAP
30 Atlantic Croaker By Size/Age Small (~Age-0) Large (~Age-1 and older)
31 Atlantic Croaker Upper Bay v. Lower Bay (Proxy for Salinity) ChesMMAP ChesMMAP
32 Forage Groups that Compose > 5% of Atlantic Croaker Diet in any Sample (ChesMMAP only) Percentage of Diet Forage Groups
33 Forage Groups that Compose > 5% of Atlantic Croaker Diet in any Sample (ChesMMAP only) Percentage of Diet Polychaetes Trumpet worm Mysids Nereis spp. Bloodworms Mantis shrimp Razor clams Amphipods Bay anchovy
34 White Perch ChesMMAP CHESFIMS
35 White Perch All Years/Months/Regions/Sizes ChesMMAP CHESFIMS
36 White Perch ChesMMAP - Annual Variability
37 White Perch ChesMMAP - Annual Variability
38 White Perch By Size/Age CHESFIMS
39 Forage Groups that Compose > 5% of White Perch Diet in any Sample (ChesMMAP only) Percentage of Diet Forage Groups
40 Forage Groups that Compose > 5% of White Perch Diet in any Sample (ChesMMAP only) Percentage of Diet Amphipods Polychaetes Nereis spp. Macoma spp. Isopods & copepods Mud crabs Bay anchovy
41 Clearnose Skate ChesMMAP Only
42 Clearnose Skate ChesMMAP All Years/Months/Regions/Sizes
43 Clearnose Skate ChesMMAP - Annual Variability
44 Clearnose Skate ChesMMAP - Annual Variability
45 Forage Groups that Compose > 5% of Clearnosed Skate Diet in any Sample (ChesMMAP only) Percentage of Diet Forage Groups
46 Forage Groups that Compose > 5% of Clearnosed Skate Diet in any Sample (ChesMMAP only) Lady crab Mantis shrimp Sand shrimp Percentage of Diet Atl. Croaker Atl. Rock crab Razor clams Tagelus clams Blackcheek tonguefish Alt. Jackknife clam Spot Weakfish Kingfish Flounder
47 Sooooo..What s Important?
48 Representative Species / Summaries (ChesMMap) Species: Baywide Piscivores: Summer Flounder Striped Bass Baywide Benthic Feeder: Atlantic Croaker Upper Bay Species: White Perch Lower Bay Species: Clearnose Skate Summer Flounder: * Bay anchovy * Weakfish * Spotted hake * Mysids * Spot * Atl. croaker * Sand shrimp * Mantis shrimp Striped Bass: * Bay anchovy * Nereis spp. * Weakfish * Mysids * Menhaden * Spot * Polychaetes * Amphipods & isopods Atlantic Croaker: * Polychaetes * Nereis spp. * Razor clams * Trumpet worm * Bloodworms * Amphipods * Mysids * Mantis shrimp * Bay anchovy White Perch: * Amphipods * Macoma spp. * Bay anchovy * Polychaetes * Isopods & copepods * Nereis spp. * Mud crabs Clearnose Skate: * Lady crab * Atl. Croaker * Blackcheek * Atl. Rock crab tonguefish * Mantis shrimp * Razor clams * Alt. Jackknife * Sand shrimp * Tagelus clams clam * Spot * Weakfish * Kingfish * Flounder
49 Representative Species / Summaries (ChesMMap) Species: Baywide Piscivores: Summer Flounder Striped Bass Baywide Benthic Feeder: Atlantic Croaker Upper Bay Species: White Perch Lower Bay Species: Clearnose Skate Summer Flounder: * Bay anchovy * Weakfish * Spotted hake * Mysids * Spot * Atl. croaker * Sand shrimp * Mantis shrimp Striped Bass: * Bay anchovy * Nereis spp. * Weakfish * Mysids * Menhaden * Spot * Polychaetes * Amphipods & isopods Atlantic Croaker: * Polychaetes * Nereis spp. * Razor clams * Trumpet worm * Bloodworms * Amphipods * Mysids * Mantis shrimp * Bay anchovy White Perch: * Amphipods * Macoma spp. * Bay anchovy * Polychaetes * Isopods & copepods * Nereis spp. * Mud crabs Clearnose Skate: * Lady crab * Atl. Croaker * Blackcheek * Atl. Rock crab tonguefish * Mantis shrimp * Razor clams * Alt. Jackknife * Sand shrimp * Tagelus clams clam * Spot * Weakfish * Kingfish * Flounder
50 Representative Species / Summaries (ChesMMap) Species: Baywide Piscivores: Summer Flounder Striped Bass Baywide Benthic Feeder: Atlantic Croaker Upper Bay Species: White Perch Lower Bay Species: Clearnose Skate Summer Flounder: * Bay anchovy * Weakfish * Spotted hake * Mysids * Spot * Atl. croaker * Sand shrimp * Mantis shrimp Striped Bass: * Bay anchovy * Nereis spp. * Weakfish * Mysids * Menhaden * Spot * Polychaetes * Amphipods & isopods Atlantic Croaker: * Polychaetes * Nereis spp. * Razor clams * Trumpet worm * Bloodworms * Amphipods * Mysids * Mantis shrimp * Bay anchovy White Perch: * Amphipods * Macoma spp. * Bay anchovy * Polychaetes * Isopods & copepods * Nereis spp. * Mud crabs Clearnose Skate: * Lady crab * Atl. Croaker * Blackcheek * Atl. Rock crab tonguefish * Mantis shrimp * Razor clams * Alt. Jackknife * Sand shrimp * Tagelus clams clam * Spot * Weakfish * Kingfish * Flounder
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