The Mapping of Composite Pollen from Point Sampled Data and Cartographic Generalization

Pollen grains are microgametophytes produced by angiosperm and gymnosperm plants. They are responsible for transporting genetic material and carrying out fertilization. The study of pollen has numerous practical applications such as plant biodiversity, paleoclimatology, archaeology, allergy studies, the study of nectar sources in honey (melissopalynology), searching for sources of petroleum, and more recently, using pollen as a trace evidence component in forensics. Once pollen grains become airborne, their dispersal is controlled by a number of physical factors that determine the deposition distance from their source area. The purpose of this work is to study spatial pattern of composite pollen in Big Bend National Park using pollen information contained in the top soil layer, test the accuracy of four interpolation methods and use cartographic generalizations to present the results. The focus is on a composite pollen group that is a member of the Asteraceae plant family and is a prolific producer of airborne pollen (Figure 1). FIGURE 1 POLLEN GRAIN OF HELIANTHUS (ASTERACEAE

A comparison of pollen counts: Light versus scanning electron microscopy

Palynologists use compound light microscopy (LM) for pollen identification and interpretation and scanning electron microscopy (SEM) for morphological comparisons and taxonomy. As we are unaware of any published reports comparing LM and SEM pollen counts and identifications of the same sample, we decided to examine a surface soil sample using both microscopes. Standard palynological extraction techniques were used. Two, 300 grain counts were made using LM, and two, 300 counts with SEM. Pollen grains viewed with SEM were also divided into three categories, ‘‘identifiable,’’ ‘‘obscured,’’ and ‘‘virtually impossible to identify’’. Eighty-six (86) percent of the pollen grains counted with SEM were classified as ‘‘identifiable’’ or ‘‘obscured.’’ Pollen concentration values ranged from 385,714 (LM Count #2) to 900,000 (SEM Count #1) per gram of soil. Regardless of the microscope used, Ligustrum spp., Myrtaceae-type, and Tilia spp. had the greatest number of pollen grains. A total of 73 taxa were found. A scan of the unexamined portion of the stubs resulted in 20 additional taxa. There were no significant differences between the counts made with the two microscopes (ANOVA, pw0.05, F50.18, df576). However, there were significantly more taxa found with SEM than with LM (t-test, T50.05). Sample preparation and the time needed to count, analyze, photograph and print the micrographs are the same regardless of the microscope used. The sample, information needed, and funding will determine which technique to use

Burials: Dietary Sampling Methods

The analysis of burials for botanical and zoological remains evidence of diet is a proven method of nondestructive analysis in the mortuary setting. The value of such analyses is directly dependent on sampling strategies that must include a number of control samples

Coprolite Analysis: A Biological Perspective on Archaeology

The most remarkable dietary remains recoverable from archaeological contexts are coprolites. Coprolites are desiccated or mineralized feces that are preserved in sheltered and open sites in arid regions, primarily in the New World. These dietary remains are remarkable from several perspectives. They typically contain a variety of macroscopic and microscopic remains that form interrelated data sets for the reconstruction of diets. Because contexts containing coprolites are typified by excellent preservation, the remains coprolites contain tend to be in better states of preservation than dietary remains recovered from nonfecal deposits. Coprolites also contain the well-preserved remains of intestinal parasites and pathogens which affected prehistoric health. Thus, coprolites provide excellent evidence of diet and disease for arid regons. Today, coprolites are recovered from caves, open sites, mummies, and occasionally from burials. Latrine deposits and trash middens are another source of coprolite data, even when individual coprolites are not identifiable in the soil matrix. Our paper offers a history of coprolite research, critically examines the types of data which can be recovered from human coprolites, evaluates interpretive value of coprolite data, and summarizes current directions in coprolite studies

Pathoecology and the Future of Coprolite Studies in Bioarchaeology

Human coprolites currently provide an expanding array of information about the diet, health, and ecology of prehistoric people in the Southwest, but for many years coprolites were not recognized or preserved, or they were not considered important and thus were not saved (Bryant and Dean 2006). With the expansion of archaeological field work during the last half of the twentieth century archaeologists have increasingly explored the complete potentials of sites, including the collection and analysis of geomorphologic, botanical, and faunal data. In some ideal habitats (e.g., very dry or frozen) this includes exploring the scientific potential of human coprolite studies. This is not easy to do: very few coprolites have what might be considered a characteristic shape and size. In our experience, the majority of coprolites are usually fragmented, flattened by age, or in many cases are preserved as amorphous masses of various sizes similar in shape to \u27\u27patties\u27\u27 left behind by cattle. These flat, amorphous human coprolites are especially common in sites used by foragers with diets very high in plant fiber. Coprolites and coprolite fragments are sometimes collected in situ during archaeological excavations, but most often they are found during screening, when dirt is being separated from artifacts. If unrecognized, coprolites may be crushed into dust, along with clods of dirt, and their contents lost

Fry: Analysis of Prehistoric Coprolites from Utah

Analysis of Prehistoric Coprolites from Utah. Gary F. Fry. University of Utah, Anthropological Papers No. 97, 1976, xii + 45 pp., illus., $8.00 (paper)

The Skiles Mummy: Care of a debilitated hunter-gatherer evidenced by coprolite studies and stable isotopic analysis of hair

The Skiles Mummy (SMM), a naturally mummified adult male from the late archaic period of Lower Pecos Canyonlands of South Texas, represents a unique case of care. SMM is an exceptional mummy within this region due to both the retention of a full head of hair, and having a diagnosed case of megacolon, a complication commonly associated with Chagas disease caused by Trypanosoma cruzi. Stable isotopic analysis of his hair is consistent with a diet incorporating of C4/CAM plants with some C3 plants, freshwater resources, and higher trophic level animals. However, the segments of hair most proximal to the scalp exhibited elevated δ15N values. Data from previous research indicate starvation and malnutrition can cause δ15N values to rise. The presence of large fecal boluses in the digestive tract suggest peristalsis ceased in the last four to five months of life, and this, together with results from coprolite analysis, indicate he would not have been able to adequately absorb protein and nutrients during this time. His condition would have rendered him immobile. Following Tilley’s index of care, someone would have had to bring him food resources, as well as attending to his daily needs

The Skiles Mummy: Care of a debilitated hunter-gatherer evidenced by coprolite studies and stable isotopic analysis of hair

The Skiles Mummy (SMM), a naturally mummified adult male from the late archaic period of Lower Pecos Canyonlands of South Texas, represents a unique case of care. SMM is an exceptional mummy within this region due to both the retention of a full head of hair, and having a diagnosed case of megacolon, a complication commonly associated with Chagas disease caused by Trypanosoma cruzi. Stable isotopic analysis of his hair is consistent with a diet incorporating of C4/CAM plants with some C3 plants, freshwater resources, and higher trophic level animals. However, the segments of hair most proximal to the scalp exhibited elevated δ15N values. Data from previous research indicate starvation and malnutrition can cause δ15N values to rise. The presence of large fecal boluses in the digestive tract suggest peristalsis ceased in the last four to five months of life, and this, together with results from coprolite analysis, indicate he would not have been able to adequately absorb protein and nutrients during this time. His condition would have rendered him immobile. Following Tilley’s index of care, someone would have had to bring him food resources, as well as attending to his daily needs