NDLI: Effects of Roadway Crossings on Leaf Litter Processing and Invertebrate Assemblages in Small Streams

Content Provider	Springer Nature Link
Author	Woodcock, Thomas S. Huryn, Alexander D.
Copyright Year	2004
Abstract	The effects of the Maine Turnpike (Interstate 95) on leaf litter processing were examined in five first- and second-order coastal plain streams in southern Maine, U.S.A. Invertebrate assemblages and red maple leaf softening and loss rates were compared at 53 stations arrayed upstream and downstream of the turnpike. Litter softening rate was not affected by the roadway. Litter loss rate was significantly faster at downstream stations (–0.0024 degree-day-1) than at upstream stations or at stations nearest the roadway, which were not different from each other (–0.0022 degree-day-1). Litter softening and loss rates were more strongly related to physical and chemical habitat variables than to shredder assemblage characteristics. Significant among-stream differences were observed in most community structural metrics and in biomass of important shredder taxa, but effects of the roadway were rarely consistent among streams. This is attributed in part to habitat variation, which was greater among streams than within streams. This study suggests that while the presence of the Maine Turnpike may influence stream water quality and habitat structure, the relatively subtle effects of roadway runoff and associated habitat modifications on stream ecosystem processes are masked by within- and among-stream variability in litter processing and leaf pack invertebrate assemblage structure.
Starting Page	229
Ending Page	250
Page Count	22
File Format	PDF
ISSN	01676369
Journal	Environmental Monitoring and Assessment
Volume Number	93
Issue Number	1-3
e-ISSN	15732959
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2004-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ecology Atmospheric Protection/Air Quality Control/Air Pollution Environmental Management Monitoring/Environmental Analysis/Environmental Ecotoxicology
Content Type	Text
Resource Type	Article
Subject	Pollution Medicine Management, Monitoring, Policy and Law

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