Benefits Of Bio-monitoring[1]
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BENEFITS OF BIO-MONITORING
BY VAUGHN WEAVER
Quick Definition
Bio-monitoring
– The study of living organisms in an environmental situation so as to determine survivability.
If there are organisms present at the time of the survey, then there is a level of survivability.
Current Need for Biomonitoring
To assess chronic environmental impacts Assess historical changes in communities Tie mankind activities to environmental responses
Water Quality Assessed
The use of fish as sentinels Other variables used include:
Benthics (aquatic invertebrates) Physical-Habitat Chemistry Hydrology
Historical Trends Positive
Since the beginning of the City’s Bio-Mon program – data suggests positive trends in fish data Strong positive shifts took over 10 years
As seen in the following graphs
Changing of the Guard!!!! Dominate Species 90 80
Percent of total Population
70 60 50
Red Shiner %
40
Sand Shiner % Emerald Shiner %
30
Remain Population %
20 10 0 1991
1994
1995
1996
1997
1998
1999 Year
2001
2002
2003
2004
2005
2006
More Species Found – Tolerant?? Tolerant Species Decline 60
45 Tolerant Species Average
40 50
Species Average/site
40
30 25
30 20 20
15 10
10 5 0
0 1991
1994
1995
1996
1997
1998
1999 Year
2001
2002
2003
2004
2005
2006
Total Species Number of Species
Percent of Population
35
Sensitive Individuals Increasing!!! 500
50000
450
45000
400
40000
350
35000
300
30000
250
25000
200
20000
150
15000
100
10000
50
5000
0
0 1991 1994
1995 1996
1997 1998
1999 Year
2001 2002
2003 2004
2005 2006
Total Individuals Collected
Total Sensative Individuals
Sensitive Species
Sensative Individuals Total Individuals
Data suggests a healthier aquatic community
With just the little bit of fish data shared, the community health of local fish shows;
A more even distribution of species sensitive individuals collected more frequently tolerant species not dominating the population
Questions?????
BY VAUGHN WEAVER
Quick Definition
Bio-monitoring
– The study of living organisms in an environmental situation so as to determine survivability.
If there are organisms present at the time of the survey, then there is a level of survivability.
Current Need for Biomonitoring
To assess chronic environmental impacts Assess historical changes in communities Tie mankind activities to environmental responses
Water Quality Assessed
The use of fish as sentinels Other variables used include:
Benthics (aquatic invertebrates) Physical-Habitat Chemistry Hydrology
Historical Trends Positive
Since the beginning of the City’s Bio-Mon program – data suggests positive trends in fish data Strong positive shifts took over 10 years
As seen in the following graphs
Changing of the Guard!!!! Dominate Species 90 80
Percent of total Population
70 60 50
Red Shiner %
40
Sand Shiner % Emerald Shiner %
30
Remain Population %
20 10 0 1991
1994
1995
1996
1997
1998
1999 Year
2001
2002
2003
2004
2005
2006
More Species Found – Tolerant?? Tolerant Species Decline 60
45 Tolerant Species Average
40 50
Species Average/site
40
30 25
30 20 20
15 10
10 5 0
0 1991
1994
1995
1996
1997
1998
1999 Year
2001
2002
2003
2004
2005
2006
Total Species Number of Species
Percent of Population
35
Sensitive Individuals Increasing!!! 500
50000
450
45000
400
40000
350
35000
300
30000
250
25000
200
20000
150
15000
100
10000
50
5000
0
0 1991 1994
1995 1996
1997 1998
1999 Year
2001 2002
2003 2004
2005 2006
Total Individuals Collected
Total Sensative Individuals
Sensitive Species
Sensative Individuals Total Individuals
Data suggests a healthier aquatic community
With just the little bit of fish data shared, the community health of local fish shows;
A more even distribution of species sensitive individuals collected more frequently tolerant species not dominating the population
Questions?????
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