Skip to Main Content
Pervasive hydrologic effects on freshwater mussels and riparian trees in southeastern floodplain ecosystemsAuthor(s): Andrew L. Rypel; Wendell R. Haag; Robert H. Findlay
Source: Wetlands, Vol. 29(2): 497-504
Publication Series: Miscellaneous Publication
PDF: View PDF (149.66 KB)
DescriptionWe present long-term growth trends for 13 freshwater mussel species from two unregulated rivers and one regulated river in the southeastern U.S. Coastal Plain. We also collected baldcypress (Taxodium distichum (L.) Rich.) tree cores adjacent to mussel collection sites in one river and directly compared tree and mussel chronologies in this river. To extend our analysis spatially, we examined published baldcypress chronologies from six other unregulated rivers throughout the region. Biochronologies were developed using standard dendrochronology techniques and we explored relationships between annual growth and a suite of streamflow variables in each river. Growth of mussels in unregulated rivers was negatively correlated with annual flood pulse count and May and June discharge, but positively correlated with annual low pulse count and annual number of hydrographic reversals. Baldcypress growth in unregulated rivers was positively correlated with May and June discharge and negatively correlated with annual low pulse count. Mussel growth in the regulated river was not correlated with any streamflow variable suggesting that biological rhythms are decoupled from hydrologic variations in this system. This study shows how interannual variability in streamflow can benefit diverse taxa in floodplain rivers over long periods and how river regulation can disrupt these relationships.
- You may send email to email@example.com to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationRypel, Andrew L.; Haag, Wendell R.; Findlay, Robert H. 2009. Pervasive hydrologic effects on freshwater mussels and riparian trees in southeastern floodplain ecosystems. Wetlands, Vol. 29(2): 497-504
Keywordsdams, dendrochronology, flood pulse, fragmentation, sclerochronology, tree ring
- The Effects of Intermittent Flooding on Seedlings of Three Forest Species
- Silvicultural and genetic influences on planted cypress productivity
- Northern Arkansas Spring Precipitation Reconstructed from Tree Rings, 1023-1992 A.D.
XML: View XML