organic contaminants track bottlenose dolphin habitat utilization in the florida panhandle
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Organic Contaminants Track Bottlenose Dolphin Habitat Utilization in the Florida Panhandle. RM Wilson. UMEs Lack of Baseline Data. Why are we interested in these animals?. Community as an ecological construct. - PowerPoint PPT PresentationTRANSCRIPT
Organic Contaminants Track Organic Contaminants Track Bottlenose Dolphin Habitat Bottlenose Dolphin Habitat
Utilization in the Florida Utilization in the Florida PanhandlePanhandle
RM WilsonRM Wilson
Why are we interested in these Why are we interested in these animals?animals?
UMEsUMEs
Lack of Baseline Lack of Baseline DataData
Community as an ecological Community as an ecological constructconstruct
Bottlenose dolphins tend to aggregate Bottlenose dolphins tend to aggregate into subgroups that “share…ranges, into subgroups that “share…ranges, exhibit similar genetic profiles, and exhibit similar genetic profiles, and interact with each other to a much interact with each other to a much greater extent than with dolphins in greater extent than with dolphins in adjacent waters”adjacent waters”
NMFS: community is the “functioning NMFS: community is the “functioning unit” of their respective ecosystem.unit” of their respective ecosystem.
Methods to Track Habitat Methods to Track Habitat UtilizationUtilization
Photo-identificationPhoto-identification
Radio trackingRadio tracking
Chemical tracersChemical tracers
Cast of CharactersCast of Characters
PCBsPCBs
DDTsDDTs
BDEsBDEs
chlordaneschlordanes
23
4
5 6
2' 3'
4'
5'6'
Study AreaStudy Area
?
SamplingSampling
Extraction and AnalysisExtraction and Analysis
ASE – collagen removalASE – collagen removal GPC – lipid removalGPC – lipid removal SPE – final clean-upSPE – final clean-up GC-MS:GC-MS:
EI : PCBs, DDTs, BDEsEI : PCBs, DDTs, BDEs NCI: chlordanesNCI: chlordanes
ResultsResults
55 POC congeners were quantified55 POC congeners were quantified
34 PCB congeners34 PCB congeners
6 DDT congeners6 DDT congeners
6 BDE congeners6 BDE congeners
5 chlordane congeners; dieldrin; HCB; mirex5 chlordane congeners; dieldrin; HCB; mirex
Females
0
500
1000
1500
2000
2500
co
nc
en
tra
tio
n (
ng
/g)
Western
Eastern
Males
0
1000
2000
3000
4000
5000
PC
B 1
8P
CB
28
+3
1P
CB
44
PC
B 4
9P
CB
52
PC
B 6
6P
CB
70
PC
B 8
7P
CB
92
PC
B 9
5P
CB
99
PC
B 1
01
PC
B 1
28
PC
B 1
38
PC
B 1
46
PC
B 1
49
PC
B 1
51
PC
B 1
53
+1
32
PC
B 1
54
PC
B 1
58
PC
B 1
70
PC
B 1
74
PC
B 1
80
+1
93
PC
B 1
83
PC
B 1
87
PC
B 1
94
PC
B 1
95
PC
B 2
01
PC
B 2
06
PC
B 2
09
Contaminant ClassesContaminant Classes
Con
cent
ratio
n (n
g/g)
wet
wei
ght
1e+1
1e+2
1e+3
1e+4
1e+5
PCB
West
DDT
East
BDE chlordane OC
West East West East West East West East
*
*
*
-0.12
-0.1
-0.08
-0.06
-0.04
-0.02
0
0.02
0.04
0.06
-0.2 -0.1 0 0.1 0.2 0.3 0.4
PC1 scores (78.5%)
PC
2 sc
ore
s (1
1.16
%)
Con
cent
ratio
n (n
g/g)
wet
wei
ght
1e+1
1e+2
1e+3
1e+4
1e+5
SAB SJB TP SAB SJB TP SAB SJB TP SAB SJB TP SAB SJB TP
OC PCB DDT BDE chlordane
** *
* *
Comparison of the 3 proposed Comparison of the 3 proposed communitiescommunities
ConclusionsConclusions
Bottlenose dolphins of the region Bottlenose dolphins of the region sampled form at least 3 three distinct sampled form at least 3 three distinct communitiescommunities
Eastern dolphins are differentiated by Eastern dolphins are differentiated by sighting data and concentrationsighting data and concentration
St Joe Bay and St Andrews Bay dolphins St Joe Bay and St Andrews Bay dolphins are differentiated by congener typeare differentiated by congener type
AcknowledgementsAcknowledgements
Doug Nowacek and Jeff ChantonDoug Nowacek and Jeff Chanton John KucklickJohn Kucklick
National Institute of Standards and Technology National Institute of Standards and Technology Charleston, SCCharleston, SC
P. Becker, J. Keller, S. Van der Pol, J. Yordy, A. P. Becker, J. Keller, S. Van der Pol, J. Yordy, A. Guichard, D. EllisorGuichard, D. Ellisor
Brian BalmerBrian Balmer University of North Carolina-WilmingtonUniversity of North Carolina-Wilmington
T. Rowles T. Rowles National Marine Fisheries ServiceNational Marine Fisheries Service