Freshwater mussel shells (Unionidae) chronicle changes in a North American river over the past 1000 years

2017 ◽  
Vol 575 ◽  
pp. 199-206 ◽  
Author(s):  
Andrea K. Fritts ◽  
Mark W. Fritts ◽  
Wendell R. Haag ◽  
Jason A. DeBoer ◽  
Andrew F. Casper
2018 ◽  
Vol 616-617 ◽  
pp. 1066-1076 ◽  
Author(s):  
W. Aaron Wilson ◽  
Andrea K. Fritts ◽  
Mark W. Fritts ◽  
Jason M. Unrine ◽  
Brent N. Tweedy ◽  
...  

1892 ◽  
Vol 24 (5) ◽  
pp. 119-120
Author(s):  
Eugene Murray Aaron

From time to time for the past ten years I have been in the habit of receiving, from various collectors in this country and Europe, speciments of North American Hesperidœ for comparison and identification with my large collection, which has been justly famous for its completeness. As this collection is now no longer in my possession, being now the property of my friend C. B. Aaron, of Philadelphis, and as I have transferred my allegiance from entomology to ethnology it has occurred to me that it will be well fro me to give here to the students of the Hesperidœ the benefit of such tables, nots teh compilations as have, in years past, been of value to me in the identification of the species in this difficult family.


2003 ◽  
Vol 4 (1) ◽  
pp. 56-58 ◽  
Author(s):  
Amanda S. Beheler ◽  
Jennifer A. Fike ◽  
Lisa M. Murfitt ◽  
Olin E. Rhodes ◽  
Thomas S. Serfass

1961 ◽  
Vol 17 (4) ◽  
pp. 325-342
Author(s):  
Philip Wayne Powell

In any study of extensive documentation of the past, one inevitably encounters personalities whose recorded actions stimulate speculation about the unknowable portions of their lives and their impact upon larger historical events. Such a one, to me, is the man called Miguel Caldera. For some years, and through many thousands of pages of Mexican frontier documentation, I have been increasingly intrigued by the story of this mestizo captain. He is omnipresent in the official papers of a critical phase of North American frontier history. His deeds—and their setting—have a dramatic, symbolistic quality which entitles him, I think, to recognition as one of the continent's most significant frontiersmen. Hence this present attempt—brief and incidental though it is—to “define” Miguel Caldera and his measure of significance.


1999 ◽  
Vol 51 (1) ◽  
pp. 74-82 ◽  
Author(s):  
Terry L. Jones ◽  
Douglas J. Kennett

AbstractMussel shells from central California coastal archaeological sites record changes in sea surface temperatures in the past 2000 years. Water temperatures, inferred from oxygen isotopes in the shells, were about 1°C cooler than present and stable between 2000 and 700 yr ago. Between about 700 and 500 yr ago, seasonal variation was greater than present, with extremes above and below historic levels. Water temperatures were 2–3°C cooler than today 500–300 yr ago. The interval of variable sea temperatures 700–500 yr ago partially coincided with an interval of drought throughout central California. A coincident disruption in human settlement along the coast suggests movements of people related to declining water sources. Quantities of fish bone in central coast middens dating to this same period are high relative to other periods, and the remains of northern anchovies, a species sensitive to changing oceanographic conditions, are also abundant. The continued use of local fisheries suggests that changes in settlement and diet were influenced more by drought than by a decrease in marine productivity, as fish provided a staple during an interval of low terrestrial productivity.


2016 ◽  
Vol 31 (3) ◽  
pp. 438-457 ◽  
Author(s):  
Katie Kilroy-Marac

Within the past decade, material disorder—especially that of the domestic variety—has come to stand alternately as evidence, symptom, and potential cause of mental disorder in the North American popular and psychiatric imagination. Sources ranging from the newly defined Hoarding Disorder diagnosis in the DSM-V, to popular media, to agents of the burgeoning clutter-management industry describe disorder in terms of an irrational attachment, closeness, or overidentification with objects. At the same time, these sources imagine order to result from the cool distance and controlled passion a person is able to maintain toward his or her possessions. Drawing on more than twenty interviews and numerous fieldwork encounters with professional organizers (POs) in Toronto between 2014 and 2015, this article describes how POs aim to reorient their clients materially, morally, and affectively to relieve the disorder they report in their lives. Here, I argue, POs emerge as a species of late capitalist healer whose interventions are animated by a paradoxical double movement. For just as POs act to loosen the object attachments and disrupt the “secret sympathy” their clients share with their possessions, they operate within a realm of magical correspondence where matter and mind are imagined to reflect and affect one another, and where bringing order to a client’s possessions means also bringing order to his or her mind.


2018 ◽  
Author(s):  
David N. Fisher ◽  
Jessica A. Haines ◽  
Stan Boutin ◽  
Ben Dantzer ◽  
Jeffrey E. Lane ◽  
...  

AbstractInteractions between organisms are ubiquitous and have important consequences for phenotypes and fitness. Individuals can even influence those they never meet, if they have extended phenotypes which mean the environments others experience are altered. North American red squirrels (Tamiasciurus hudsonicus) guard food hoards, an extended phenotype that typically outlives the individual and is almost always inherited by non relatives. Hoarding by previous owners can therefore influence subsequent owners. We found that red squirrels bred earlier and had higher lifetime fitness if the previous owner was a male. This was driven by hoarding behaviour, as males and mid-aged squirrels had the largest hoards, and these effects persisted across owners, such that if the previous owner was male or died in mid-age subsequent occupants had larger hoards. Individuals can, therefore, influence each other’s resource dependent traits and fitness without meeting via extended phenotypes, and so the past can influence contemporary population dynamics.


Zoo Biology ◽  
2007 ◽  
Vol 26 (1) ◽  
pp. 41-50 ◽  
Author(s):  
Steffany C. White ◽  
David W. Clark ◽  
Carrie D. Day ◽  
Robert S. Sikes

Antiquity ◽  
2018 ◽  
Vol 92 (362) ◽  
pp. 490-506 ◽  
Author(s):  
Eric C. Kansa ◽  
Sarah W. Kansa ◽  
Josh J. Wells ◽  
Stephen J. Yerka ◽  
Kelsey N. Myers ◽  
...  

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