Science Inventory

Riparian spiders as sentinels of PCB contamination across heterogeneous aquatic ecosystems

Citation:

Kraus, J., P. Gibson, D. Walters, AND M. Mills. Riparian spiders as sentinels of PCB contamination across heterogeneous aquatic ecosystems. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY. Society of Environmental Toxicology and Chemistry, Pensacola, FL, 36(5):1278-1286, (2017). https://doi.org/10.1002/etc.3658

Impact/Purpose:

Riparian spiders are being used increasingly to track spatial patterns of contaminants in and fluxing from aquatic ecosystems. However, our understanding of the circumstances under which spiders are effective sentinels of aquatic pollution is limited. Here we test the hypothesis that riparian spiders may be effectively used to track spatial patterns of sediment pollution by polychlorinated biphenyls (PCBs) in aquatic ecosystems with high habitat heterogeneity. This information is of interest to Regional and Program Office decision makers, States, and local affected communities.

Description:

Riparian spiders are being used increasingly to track spatial patterns of contaminants in and fluxing from aquatic ecosystems. However, our understanding of the circumstances under which spiders are effective sentinels of aquatic pollution is limited. The present study tests the hypothesis that riparian spiders may be effectively used to track spatial patterns of sediment pollution by polychlorinated biphenyls (PCBs) in aquatic ecosystems with high habitat heterogeneity. The spatial pattern of PCB concentrations in 2 common families of riparian spiders sampled in 2011 to 2013 generally tracked spatial variation in sediment PCBs across all sites within the Manistique River Great Lakes Area of Concern (AOC), a rivermouth ecosystem located on the south shore of the Upper Peninsula, Manistique (MI, USA) that includes harbor, river, backwater, and lake habitats. Sediment PCB concentrations normalized for total organic carbon explained 41% of the variation in lipid-normalized spider PCB concentrations across 11 sites. Furthermore, 2 common riparian spider taxa (Araneidae and Tetragnathidae) were highly correlated (r2 > 0.78) and had similar mean PCB concentrations when averaged across all years. The results indicate that riparian spiders may be useful sentinels of relative PCB availability to aquatic and riparian food webs in heterogeneous aquatic ecosystems like rivermouths where habitat and contaminant variability may make the use of aquatic taxa less effective. Furthermore, the present approach appears robust to heterogeneity in shoreline development and riparian vegetation that support different families of large web-building spiders.

URLs/Downloads:

https://doi.org/10.1002/etc.3658   Exit

http://onlinelibrary.wiley.com/doi/10.1002/etc.3658/full   Exit

Record Details:

Record Type: DOCUMENT (JOURNAL/PEER REVIEWED JOURNAL)
Product Published Date: 05/01/2017
Record Last Revised: 05/11/2018
OMB Category: Other
Record ID: 340185

Organization:

U.S. ENVIRONMENTAL PROTECTION AGENCY

OFFICE OF RESEARCH AND DEVELOPMENT

NATIONAL RISK MANAGEMENT RESEARCH LABORATORY

LAND AND MATERIALS MANAGEMENT DIVISION

REMEDIATION AND TECHNOLOGY EVALUATION BRANCH