Coastal America Foundation Buzzards Bay, MA Climate Change Benchmarking.
Post on 06-Jan-2018
219 Views
Preview:
DESCRIPTION
Transcript
Coastal America Foundation
Buzzards Bay, MAClimate Change Benchmarking
Howard Sanders 1955 Stations
Buzzards Bay, Massachusetts
All CAF Benthic Stations in Buzzards Bay
A-H Identified
I-M in lab
N-R 2014
0 to 2 % gravel in 1955
4 “Gravel” stations are Crepidula fornicata shell (retained on the gravel sieve in Grain Size Curves) in 2011/2012
C and E not as dominated with Crepidula, but dense Polygordius concentrations.
(> Crepidula )= (> silt/clay)
Table 3. Grain Size of 1955 and 2011/2012 sample stations. 1
Grain Size of Sanders (S-55-) and Coastal America Foundation (CAF-) Stations A through H
% Gravel-
Fine %Sand-Coarse
%Sand-Medium
%Sand-Fine %Silt/Clay
CAF-A 63.74 2.45 11.08 7.80 14.92 S-55-A 2.04 4.76 68.37 23.80 1.03 CAF-B 0.32 0.18 3.51 29.38 66.61 S-55-B 0.29 0.46 28.12 65.39 5.74 CAF-C 2.87 3.05 60.09 29.55 4.45 S-55-C 1.41 1.62 36.76 57.52 2.69 CAF-D 74.12 1.34 2.69 2.86 18.99 S-55-D 0.14 0.20 16.38 79.16 4.12 CAF-E 9.36 3.36 52.33 33.64 1.32 S-55-E 0.00 0.27 40.22 57.20 2.31 CAF-F 0.00 0.02 0.95 3.74 95.29 S-55-F 0.00 0.02 0.36 8.42 91.20 CAF-G 0.01 0.15 23.70 44.70 31.44 S-55-G 0.01 0.07 15.39 69.28 15.25 CAF-H 0.02 0.08 12.23 29.81 57.87 S-55-H 0.02 0.21 30.19 61.75 7.83
2
Crepidula fornicata
Common Slipper Shell
Massachusetts Office of Coastal Zone Management
1 to 5 = Water Quality Stations
A to H – Benthic Stations
8 of Sanders 19 sorted and ID (triplicate Van Veen)
Additional 5 sorted and in lab
Data logger every 15 minutes from Mid-May to Mid-October
Temperature
Dissolved Oxygen
Salinity
(logged every 15 minutes)
21’ Center CounselTaylor Point Marina
Occasional Water Grabs
Fall Benthic Grabs
Video – Towed and ROV
Coastal America Foundation East Station DO 2013
3.86 mg/l7/15/20139.21 mg/l
5/28/20136.84 mg/l10/13/2013YSI 85
HOBO logger data as compared to YSI 85 occasional profiles.
Crepidula fornicata
Common Slipper Shell
Crepidula dominatedNephtys/Macoma dominated
Nephtys/Ampelisca dominatedPolygordius dominated
Buzzards Bay, MA – Stations A through H
0.04m²10 cm deeptriplicates
Van Veen Grab
Going Forward:Mapping:- Compare recordable Hydro (SIMRAD CHIRP/Structure scan?) to ROV- Compare Hydro to density (1000 to 2000 micron sieve)
Ecology:- Predators? - Fish stomach content- Seasonal growth/stacking- Caged growth?
Chemistry:- Increase N+P Sampling- Increase TSD profiles and benthic pH
Geology:- Cores to 1955 sand layer- Shell/fecal detritus/base layers
- OTHER: …
Questions?
top related