History Is in the Land: Multivocal Tribal Traditions in Arizona's San Pedro Valley

The San Pedro Ethnohistory Project is a collaborative researchinitiative between the Center for Desert Archeology and fourIndian tribes whose ancestors lived along this ancient naturaltravel route (4). Realizing the substantial data about the SanPedro River Valley reflected few native voices, a team of archeologistsand anthropologists designed the project to include participationfrom four area tribes with ties to the area—the TohonoO’odham, Hopi, Zuni, and Western Apache. Each of the tribeshave "distinct oral traditions that provide an anthropologicalcontext for interpreting the history and archeology" of thevalley (6). The project included fieldwork     

Influence of climate change on carbon and oxygen isotope fractionation factors between glucose and α-cellulose of pine wood

We present the first analysis of the influence of climate change on carbon and oxygen isotope fractionation factors for two saccharides (glucose and α-cellulose) of pine wood. The conifers grew in the Niepo?omice Forest in Poland and the annual rings covered a time span from 1935 to 2000 AD. Glucose samples from acid hydrolysis of α-cellulose were extracted from annual tree rings. The carbon and oxygen isotope fractionation factors between glucose and α-cellulose were not stable over time. The mean value for the carbon isotope fractionation factors between glucose and α-cellulose was greater than unity. The mean value for the oxygen isotope fractionation factors between glucose and α-cellulose was lower than unity. We established, with respect to climate change, the significance of the interannual and intraannual variation in the carbon and oxygen isotope fractionation factors between both saccharides. We used moving interval correlation results for May of the previous year through September of the current year using a base length of 48 years. The relationship with summer temperature is the main climate signal in the carbon isotope fractionation factor between glucose and α-cellulose. The relationship with autumn sunshine is the main climate signal in the oxygen isotope fractionation factor between glucose and α-cellulose for the tree ring chronology.     

Sign Geography

Signs are significant elements of cultural landscapes throughout the world. Through their form and content, signs reveal a variety of information about places ranging from locational and physical geographic data through social, economic and political characteristics. Signs, which tell of past events, current conditions and future expectations, are landscape notes on the geography of change. Signs are frequently evidence of cultural diffusion and convergence. Many signs give direction to human activity and symbolize societal quest for order. Others reflect tastes, values and attitudes, in concert with prevailing belief systems. Signs are both cultural phenomena and landscape statements that attest to the way of life in a place.