Bay Tree Beach 11 September 2003

    
         
   
Abiotic
Temp.
Air 23C
Sand 19C
Water 20C
Salinity 26/1000
Secchi 50 cm
Weather mostly cloudy, slight sunshine, windy
Tides High=10:39am
Low=4:42pm

 

   
   
Floristics Scientific Name The amoun tfound
Sublittoral
Red Algae Gracelius sp.  2
Eel grass Zostra marinus
Littoral
Cord Grass roots Spartina altinaflora greater than 20
Common Reed roots Phragmites australis greater than 20
Supralittoral
Choke Cherry Prunus virginiana 2

 

   
   
Biomass
Phragmites australis
32 stems in m2
100% full
Average hight: 3 m 15 cm
g Carbon/m2 =  stem count * mass/g stem*0.06 g C/g wet mass
g Carbon/m2 =  32*14 g/ stem*0.06g C/ g wet mass
g Carbon/m2 =  26.88 g C/ g wet mass/ m2

 

   
   
•Littorina Data: Peterson's Capture Recapture Method

N = M (n+1) / R+1

•Where N is population size
•M is original sample size
•Second sample size is n
•Recaptured snails  is R
•11 September 2003
•N = 236 (242)/7 = 8000 snails
   
       
   
Seine & Fauna
Number Scientific Name Common Name Location
Geukensia dimissa Ribbed Mussels Tidal pool
Orchestria grillus Beach flea (amphipod) Wrack line
Uca minax Red Jointed Fiddler Crab Tidal pool (near wrack line)
Uca rapax Fiddler crab Tidal pool (near wrack line)
Calinectes sapidus Blue crab Tidal pool
Uca pugnax Fiddler crab Tidal pool (near wrack line)
Sesarma cinereum Fiddler crab Tidal pool (near wrack line)
Menidia beryllina Bay Silver side Tidal pool (in grasses)
Fundulus similis Longnose killifish Marsh edge and tidal pool

 

   
   

PDF File of Data

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