| Abstract: | Mercury (Hg) bioaccumulation in salamanders has received little attention despite widespread Hg contamination of aquatic ecosystems and worldwide amphibian declines. Here we report concentrations of methyl Hg (MeHg) and total Hg in larval northern two-lined salamanders (Eurycea bislineata bislineata) collected from streams in Acadia National Park (ANP), Maine, and Bear Brook Watershed, Maine (BBWM; a paired, gauged watershed treated with bimonthly applications (25 kg/ha/yr) of ammonium sulfate [(NH4)(2)SO4]) since 1989), and Shenandoah National Park (SNP), Virginia. MeHg comprised 73-97% of total Hg in the larval salamander composite samples from ANP. At BBWM we detected significantly higher total Hg levels in larvae from the (NH4)(2)SO4 treatment watershed. At ANP total Hg concentrations in salamander larvae were significantly higher from streams in unburned watersheds in contrast with larval samples collected from streams located in watersheds burned by the 1947 Bar Harbor fire. Additionally, total Hg levels were significantly higher in salamander larvae collected at ANP in contrast with SNP. Our results suggest that watershed-scale attributes including. re history, whole-catchment (NH4)(2)SO4 additions, wetland extent, and forest cover type influence mercury bioaccumulation in salamanders inhabiting lotic environments. We also discuss the use of this species as an indicator of Hg bioaccumulation in stream ecosystems. |
| Genre: | Article |
| ProdID: | 5224425 |
| Citation Author: | Bank, M.S.; Loftin, C. S.; Jung, R.E. |
| Citation Contributing Office: | Patuxent Wildlife Research Center |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | |
| Citation Editor: | |
| Citation End Page: | 191 |
| Citation Issue: | 1-2 |
| Citation Keywords: | |
| Citation Language: | English |
| Citation Larger Work Title: | Ecotoxicology |
| Citation LatN: | |
| Citation LatS: | |
| Citation LonE: | |
| Citation LonW: | |
| Citation Month: | |
| Citation No Pagination: | |
| Citation Number Of Pages: | 11 |
| Citation Online Only Flag: | |
| Citation Phsyical Description: | 181-191 |
| Citation Projection: | |
| Citation Public Comments: | DOI 10.1007/s10646-004-6268-8 6312_Bank.pdf |
| Citation Publisher: | |
| Citation Series: | |
| Citation Series Code: | |
| Citation Series Number: | |
| Citation Search Results Text: | Mercury bioaccumulation in northern two-lined salamanders from streams in the northeastern United States; 2005; Article; Journal; Ecotoxicology; Bank, M.S.; Loftin, C. S.; Jung, R.E. |
| Citation Start Page: | 181 |
| Citation Volume: | 14 |
| Citation Year: | 2005 |
| Type: | citation/reference |
| Text: | Mercury bioaccumulation in northern two-lined salamanders from streams in the northeastern United States; 2005; Article; Journal; Ecotoxicology; Bank, M.S.; Loftin, C. S.; Jung, R.E. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DOCUMENT): | http://www.springerlink.com/content/n40314231g0h2w3m/?p=096fd9503d694ac3910599017753793a&pi=14 |
| Date Other: | Wed, 16 Jun 2010 12:18 -0500 |
| Publisher: | |
