SERC Data Table of Contents

meta key # crab006
dataset or series of data Fish weir sampling, SERC, Edgewater, MD
keywords Chesapeake Bay, estuary, fish, weir
originator Hines, A. H.
file format ascii text column format
platform Windows
study site locale Muddy Creek in Rhode River, Edgewater, Anne Arundel County, MD, USA
beginning date 19830305
ongoing? yes
ending date  
meas. freq. approximately weekly, ~42 times/year
site size  
# of stations 2
west longitude -76.55
east longitude -76.55
north latitude 38.87
south latitude 38.87
parameters Variables are the following: Date (MMDDYY). Station-1=Upstream into Muddy Creek, 2=Downstream of Muddy Creek. Species1-Species 63=Number of species caught in weir for that date. Species 1=3-spine stickleback (Gasterosteus aculeatus); sp2=4-spine stickleback (Apeltes quadracus); sp3=Alewife (Alosa pseudoharengus); sp4=American eel (Anguilla rostrata); sp5=American shad (Alosa sapidissima); sp6=Bay anchovy (Anchoa mitchilli); sp7=Atlantic herring (Clupea harengus); sp8=Black crappie (Pomoxis nigromaculatus); sp9=Black sea bass (Centropristis striata); sp10=Blueback herring (Alosa aestivalis); sp11=Bluefish (BPomatomus saltatrix); sp12=Bluegill (Lepomis macrochirus); sp13=Brown bullhead (Ictalurus nebulosus); sp14=Carp (Cyprinus carpio); sp15=Chain pickerel (Esox niger); sp16=Channel catfish (Ictalarus punctatus); sp17=Creek chubsucker (Erimyzon oblongus); sp18=Crevalle jack (Caranx hippos); sp19=Atlantic croaker (Micropogonias undulatus); sp20=Banded killifish (Fundulus diaphanus); sp21=Mummichog (Fundulus heteroclitus); sp22=Striped killifish (Fundulus majalis); sp23=Marsh killifish (Fundulus confluentus); sp24=Gizzard shad (Dorosoma cepedianum); sp25=Golden shiner (Notemigonus crysoleucas); sp26=Grass shrimp (Palaemonetes pugio); sp27=Green goby (Microgobius thalassinus) ; sp28=Green sunfish (Lepomis cyanellus); sp29=Harvest fish (Peprilus alepidotus); sp30=Hickory shad (Alosa mediocris) ; sp31=Hogchoker (Trinectes maculatus); sp32=Horseshoe crab (Limulus polyphemus); sp33=Immature female blue crab (Callinectes sapidus) ; sp34=Large mouth bass (Micropterus salmoides); sp35=Male blue crab (Callinectes sapidus); sp36=Maryland diamondback terrapin (Malachlemys terrapin) ;sp37=Mature female blue crab (Callinectes sapidus) ; sp38=Menhaden (Brevoortia tyrannus); sp39=Naked goby (Gobiosoma bosci); sp40=Needlefish (Strongylura marina); sp41='Other' which includes infrequently caught species : Eastern red spotted newt (Notophthalmus viridescens), or Northern leopard frog (Rana pipiens), or Red-ear slider turtle (Pseudemys scripta elega), or Red belly turtle (Chrysemys rubriventris), or Painted turtle (Chrysemys picta), or Northern water snake (Nerodia sipedon), or Burrowing crayfish (Cambarus diogenes), or Sea otter (Enhydra lutris), or Muskrat (Ondatra zibethicus) ; sp42=Pumpkinseed (Lepomis macrochirus); sp43=Rainwater (Lucania parva); sp44=Sea lamprey (Petromyzon marinus);sp45=Sea trout (Cynoscion regalis); sp46=Sheepshead minnow (Cyprinodon variegatus); sp47=Silverside (Menidia menidia); sp48=Silvery minnow (Hybognathus nuchalis); sp49=Skilletfish (Gobiesox strumosus); sp50=Small mouth bass (Micropterus dolomieui); sp51=Snapping turtle (Chelydra sperpentina); sp52=Spot (Leiostomus xanthurus); sp53=Spottail shiner (Notropis hudsonius); sp54=Spotted sea trout (Cynoscion nebulosus);sp 55=Striped bass (Morone saxatilis); sp56=Striped mullet (Mugil cephalus); sp57=Total number of blue crabs (Callinectes sapidus); sp58=Unidentified; sp59=White catfish (Ictalurus catus); sp60=White mullet (Mugil curema); sp61=White perch (Morone americana); sp62=Winter flounder (Pseudopleuronectes americanus); sp63=Yellow perch (Perca flavescens).
current sharing status available to collaborators
current advertising status scientific publications, lectures, SERC public site
abstract The fish weir was initially constructed in March 1983. It is located at the mouth of Muddy Creek, a primary tributary of the Rhode River, and consists of a series of fences designed to funnel fish into two openings, one facing upstream and one facing downstream. At approximately weekly intervals, nets are deployed at each opening for a period of twenty-four hours, after which time all fish are identified to species, counted and a subset measured. Over fifty species of fish and invertebrates have been collected since weir sampling was initiated in 1983. The majority of these species are rare or occur in low abundances; five species, mummichog, Atlantic silverside, Atlantic menhaden, sheepshead minnow and spot, account for 95% of the total abundance. Other frequently encountered species include blue crabs, white perch, striped bass, pumpkinseed, bay anchovy and gizzard shad. The data collected by weir sampling provides valuable information regarding fish and invertebrate populations of Muddy Creek and the Rhode River. Of primary interest are long-term, annual and seasonal changes in species composition, response of the population and individual species to environmental variables, and migration patterns and habitat utilization of select species.
additional documentation / reference article Hines, A.H. and Ruiz, G. 1995. Temporal variation in juvenile blue crab mortality: nearshore shallows and cannibalism in Chesapeake Bay. Bulletin of Marine Science. 57 (3): 884 - 901.

Last Updated on 4/17/01
By Michelle Berger