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Effects of Land Use and Associated Factors On Biological Communities of Small Streams in the Illinois River Basin of Arkansas by James C. Petersen, Billy.

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Presentation on theme: "Effects of Land Use and Associated Factors On Biological Communities of Small Streams in the Illinois River Basin of Arkansas by James C. Petersen, Billy."— Presentation transcript:

1 Effects of Land Use and Associated Factors On Biological Communities of Small Streams in the Illinois River Basin of Arkansas by James C. Petersen, Billy Justus, and Bradley J. Meredith U.S. Geological Survey Arkansas Water Science Center This is information is preliminary and is subject to revision. It is being provided to meet the need for timely best science. The information is provided on the condition that neither the U.S. Geological Survey nor the U.S. Government may be held liable for any damages resulting from the authorized or unauthorized use of the information.

2 Preliminary Information—Subject to Revision. Not for Citation or Distribution ACKNOWLEDGMENTS Funding--Illinois River Watershed Partnership (319 grant) Landowners--access

3 Preliminary Information—Subject to Revision. Not for Citation or Distribution Study conducted in response to the watershed management plan

4 Preliminary Information—Subject to Revision. Not for Citation or Distribution

5 From IRWP Site WWTP Complex land use effects Multiple stressors

6 Preliminary Information—Subject to Revision. Not for Citation or Distribution OBJECTIVE Describe relations between biological communities and environmental factors (land use, nutrients, and habitat)

7 Preliminary Information—Subject to Revision. Not for Citation or Distribution SAMPLING APPROACH Select 18 sites—land use, basin size, WWTP Baseflow water-quality sample (nutrients only, July-August of 2011, May-June 2012) Concurrently sample biological communities Concurrently measure habitat factors

8 Preliminary Information—Subject to Revision. Not for Citation or Distribution DATA ANALYSIS APPROACH Divide sites into categories: Agriculture gradient Urban gradient Forest—both gradients Wastewater-treatment plant (WWTP) Calculate biological metrics/indices Calculate environmental factor values

9 Preliminary Information—Subject to Revision. Not for Citation or Distribution DATA ANALYSIS APPROACH Evaluate relations between biology and environmental factors Spearman correlation Scatter plots of biological metrics vs environmental factors

10 Preliminary Information—Subject to Revision. Not for Citation or Distribution ENVIRONMENTAL FACTORS IN PLOTS Land use Percent forest Total road density Nutrients Total phosphorus Nitrate Sediment Embeddedness Shading Canopy angle Stream geometry Bank height Environmental factor Biological metric

11 Preliminary Information—Subject to Revision. Not for Citation or Distribution ENVIRONMENTAL FACTORS IN PLOTS Land use Percent forest Total road density Nutrients Total phosphorus Nitrate Sediment Embeddedness Shading Canopy angle Stream geometry Bank height

12 Preliminary Information—Subject to Revision. Not for Citation or Distribution ENVIRONMENTAL FACTORS IN PLOTS Land use Percent forest Total road density Nutrients Total phosphorus Nitrate Sediment Embeddedness Shading Canopy angle Stream geometry Bank height

13 Preliminary Information—Subject to Revision. Not for Citation or Distribution ENVIRONMENTAL FACTORS IN PLOTS Land use Percent forest Total road density Nutrients Total phosphorus Nitrate Sediment Embeddedness Shading Canopy angle Stream geometry Bank height

14 Preliminary Information—Subject to Revision. Not for Citation or Distribution ENVIRONMENTAL FACTORS IN PLOTS Land use Percent forest Total road density Nutrients Total phosphorus Nitrate Sediment Embeddedness Shading Canopy angle Stream geometry Bank height

15 Preliminary Information—Subject to Revision. Not for Citation or Distribution ENVIRONMENTAL FACTORS IN PLOTS Land use Percent forest Total road density Nutrients Total phosphorus Nitrate Sediment Embeddedness Shading Canopy angle Stream geometry Bank height

16 Preliminary Information—Subject to Revision. Not for Citation or Distribution Rho=-0.05

17 Preliminary Information—Subject to Revision. Not for Citation or Distribution Wastewater-treatment plant sites

18 Preliminary Information—Subject to Revision. Not for Citation or Distribution Rho=0.49

19 Preliminary Information—Subject to Revision. Not for Citation or Distribution

20 Rho=-0.19

21 Preliminary Information—Subject to Revision. Not for Citation or Distribution

22 July-August 2011 May-June 2012

23 Preliminary Information—Subject to Revision. Not for Citation or Distribution Rho=-0.27

24 Preliminary Information—Subject to Revision. Not for Citation or Distribution Rho=-0.16

25 Preliminary Information—Subject to Revision. Not for Citation or Distribution Rho=0.07

26 Preliminary Information—Subject to Revision. Not for Citation or Distribution Rho=0.45

27 Preliminary Information—Subject to Revision. Not for Citation or Distribution Forest site Agriculture site Urban site Agriculture site with wastewater-treatment plant Urban site with wastewater-treatment plant Rho=0.86

28 Preliminary Information—Subject to Revision. Not for Citation or Distribution Forest site Agriculture site Urban site Agriculture site with wastewater-treatment plant Urban site with wastewater-treatment plant Rho=0.72

29 Preliminary Information—Subject to Revision. Not for Citation or Distribution Forest site Agriculture site Urban site Agriculture site with wastewater-treatment plant Urban site with wastewater-treatment plant

30 Preliminary Information—Subject to Revision. Not for Citation or Distribution Forest site Agriculture site Urban site Agriculture site with wastewater-treatment plant Urban site with wastewater-treatment plant Rho=-0.77

31 Preliminary Information—Subject to Revision. Not for Citation or Distribution Dauwalter et al., 2003 Rho=0.63 Least disturbed Fair Good Poor

32 Preliminary Information—Subject to Revision. Not for Citation or Distribution Rho=0.85

33 Preliminary Information—Subject to Revision. Not for Citation or Distribution Rho=0.85

34 Preliminary Information—Subject to Revision. Not for Citation or Distribution Rho=-0.60

35 Preliminary Information—Subject to Revision. Not for Citation or Distribution

36 Rho=0.19

37 Preliminary Information—Subject to Revision. Not for Citation or Distribution Rho=-0.52

38 Preliminary Information—Subject to Revision. Not for Citation or Distribution Rho=-0.75

39 Preliminary Information—Subject to Revision. Not for Citation or Distribution Summary Sampled 18 sites on small streams Gradient of agriculture and urban land use —also WWTP sites Effects on all trophic levels Effects from all classes of environmental factors Land use Nutrients Sediment Shading Channel geometry Effects from WWTP’s

40 Preliminary Information—Subject to Revision. Not for Citation or Distribution Questions?

41 Preliminary Information—Subject to Revision. Not for Citation or Distribution

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