Fluvial activity in major river basins of the eastern United States during the Holocene

Super cool meta-analysis of fluvial reconstructions focused on regional watersheds of the eastern United States, by UA PhD student Ray Lombardi, published in Holocene.

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Streamflow Variability Indicated by False Rings in Bald Cypress

In this paper we use baldcypress to develop a false ring record extending from 1881 to 2014. All 20 of the false-ring events recorded during the instrumental period occurred during years in which greatly increased streamflow occurred late in the growing season. Many of these wet events appear to be the result of rainfall resulting from landfalling tropical cyclones.

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A record of flooding on the White River, Arkansas derived from tree-ring anatomical variability and vessel width

In this recent paper we look at inter-annual tree-ring anatomical variability and vessel width in overcup oak (Quercus lyrata) and river flooding at a bottomland hardwood forest site near the confluence of the White and Mississippi Rivers.

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Wabash River

Made a quick trip up to eastern Illinois in December to sample bottomland oak at Sielbeck Forest and Beall Woods, both of which have some very nice old growth oak. Sielbeck is just north of Metropolis IL, in the former channel of the Ohio River (8K years ago) and Beall Woods is adjacent to the

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More White River

In addition to sampling live trees, we were able to find a few dead standing snags and downed logs to sample. Hopefully these will help us get farther back in time than the living trees. For more pics see https://plus.google.com/+MatthewTherrell/posts/1yHufupf55b

White River National Wildlife Refuge

Had a “great” trip to the WRNWR to sample old overcup oak (Quercus lyrata) along Scrubgrass Bayou, and by great I mean we didn’t perish though I thought we might at times given the lightning and terrible heat, insects, and noxious plants. Matt Meko is shown coring a nice mature overcup. For more pics see https://plus.google.com/+MatthewTherrell/posts/1yHufupf55b

Lakeport Plantation

If you are into old plantation houses Lakeport Plantation in eastern Arkansas is one of the finest restored examples in that state. A few years ago Dave Stahle and I used tree-rings to date the construction of the main house. It was built almost entirely of bald cypress, and nearly every log was cut in

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Climate and the Mfecane

The mfecane is thought to be a massive upheaval and devastation of Nguni tribal chiefdoms in the second decade of the 19th century in what is now KwaZulu-Natal and the Eastern Cape of South Africa. We show that pervasive cycles of drought and cold periods in southern Africa are significantly amplified and extended by volcanic

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