The fish of Lake Titicaca: implications for archaeology and changing ecology through stable isotope analysis

Research on past human diets in the southern Lake Titicaca Basin has directed us to investigate the carbon and nitrogen stable isotopes of an important dietary element, fish. By completing a range of analyses on modern and archaeological fish remains, we contribute to two related issues regarding the application of stable isotope analysis of archaeological fish remains and in turn their place within human diet. The first issue is the potential carbon and nitrogen isotope values of prehistoric fish (and how these would impact human dietary isotopic data), and the second is the observed changes in the fish isotopes through time. Out of this work we provide quantitative isotope relationships between fish tissues with and without lipid extraction, and a qualitative analysis of the isotopic relationships between fish tissues, allowing archaeologists to understand these relationships and how these values can be applied in future research. We test a mathematical lipid normalization equation to examine whether future researchers will need to perform lipid extraction procedures for Lake Titicaca fish. We also analyze a number of aquatic plants to better understand the range of isotopic signatures of the Lake Titicaca ecosystem. We use these data to better understand prehistoric human diet and the role that fish may have played in the past as well as potential changes in local lake ecology through time.     

Avian Remains from Khonkho Wankane,an Urban and Ceremonial Center in the Southern Lake Titicaca Altiplano

The urban and ceremonial center Khonkho Wankane flourished in the southern Lake Titicaca Altiplano region during the Late Formative prior to the rise of Tiwanaku as a dominant urban center. This site yielded an avifaunal number of identified specimens (NISP) = 631, with a minimum of 26 taxa represented among 539 skeletal elements or fragments. A total of 92 egg shell fragments also were recovered. The avifauna inhabited two major ecological zones: Lake Titicaca, its margins/wetlands and other water margins; and the dry Altiplano grassland (or puna). Lake/wetland taxa include Phoenicopterus chilensis (Chilean flamingo), Nycticorax nycticorax (night heron) and multiple taxa in the Order Anseriformes (ducks, geese, etc.) including Chloephaga melanoptera (Andean goose), Anas georgica (yellow‐billed pintail), A. flavirostris (speckled teal) and Oxyura jamaicensis (Andean ruddyduck). Also present are Fulica ardesiaca (Andean coot), Gallinago andina (puna snipe), Himantopus mexicanus (black‐necked stilt) and Charadrius alticola (puna plover). Puna taxa include Nothoprocta cf. ornata (ornate tinamou), Nothura cf. darwinii (Darwin's nothura), Metropelia sp. (ground doves), Athene cunicularia (burrowing owl), and multiple Passeriformes (songbirds, etc.). Taxa with a cosmopolitan distribution include Falco cf. femoralis (aplomado falcon) and Tyto alba (barn owl). Taphonomic analysis indicates that the avifauna were used in ceremonial contexts, including multiple Falco cf. femoralis burials, and for dietary and possibly tool‐making purposes. Other sources of introduction into the site deposits likely include natural mortality of taxa directly inhabiting the site area. These findings are compared to the avifauna recovered from the Formative site of Chiripa along the Lake Titicaca margin, which included a much higher proportion of lake bird fauna. At Khonkho Wankane, the importance of wetland avifauna may have been enhanced by the alteration of the local environment to include qochas, or artificial reservoirs/ponds, and continued despite reliance upon multiple domesticated plant and mammal species. Copyright © 2011 John Wiley & Sons, Ltd.     

Advances in Polynesian Prehistory: A Review and Assessment of the Past Decade (1993–2004)

The pace of archaeological research in Polynesia has intensified in recent years, resulting in more than 500 new literature citations over the past decade. Fieldwork has continued in such previously well-studied archipelagoes as Tonga and Samoa in Western Polynesia, and Hawai’i and New Zealand in Eastern Polynesia, and has expanded into previously neglected islands including Niue, the Equatorial Islands, the Austral Islands, and Mangareva. The emergence of Ancestral Polynesian culture out of its Eastern Lapita predecessor is increasingly well understood, and the chronology of Polynesian dispersal and expansion into Eastern Polynesia has engaged several researchers. Aside from these fundamental issues of origins and chronology, major research themes over the past decade include (1) defining the nature, extent, and timing of long-distance interaction spheres, particularly in Eastern Polynesia; (2) the impacts of human colonization and settlement on island ecosystems; (3) variation in Polynesian economic systems and their transformations over time; and (4) sociopolitical change, especially as viewed through the lens of household or microscale archaeology. Also noteworthy is the rapidly evolving nature of interactions between archaeologists and native communities, a critical aspect of archaeological practice in the region.

Galilee Blooming: First palynological and archaeological data from an Early Byzantine Cistern at Horvat Kur

Abstract

Preliminary archaeological and palynological results are presented from an early Byzantine cistern of the village Horvat Kur in eastern Lower Galilee/Israel. The rural site was settled from the Hellenistic until the Early Arab period, its synagogue was constructed shortly after 425 AD and renovated sometimes during the 2nd half of the 6th century AD. It was abandoned probably as a consequence of the earthquake of 749 AD. The intact and properly sealed cistern contained complete or fully restorable pottery. Two cooking pots from the early 5th century AD comprised sediments which was sampled for palynological purposes. Both samples, as well as a sample from the soil beneath one of the pots and a modern surface sample from the site, revealed well preserved palynomorphs in comparably high concentration showing a great potential of the cistern as a pollen archive. The pollen content points to an open, grassy semiarid landscape with an apparent scarcity of cultivars and trees in the vicinity of the site and an abundance of herbs, especially Asteraceae, which are still commonly found in modern regional vegetation.     

Systematic seasonal land use by late Pleistocene Tasmanian Aborigines

New research on the odontochronological (dental growth-increment) analysis of marsupial teeth provides opportunities to estimate with more certainty the time of the year Tasmanian Aborigines inhabited sites during the late Pleistocene. Here we focus on the Bennett's wallaby (Macropus rufogriseus) as a proxy for understanding seasonal human land use patterns and occupation of four southwest Tasmanian caves. The aim of the paper is to investigate whether caves at different altitudes were occupied in alternating seasons, and determine if the ‘Patch Model’ developed to explain the archaeological variability of late Pleistocene human behavior should be modified accordingly. The data presented here support the original observations that these sites, although reflecting extreme richness, were occupied in a punctuated seasonal manner with visits probably separated by a considerable time of unknown duration.     

Pre-pottery farmers on the Pacific coast of southern Mexico

Large island-like shell mounds along the southern coast of Mexico are the earliest known archaeological sites on the Pacific margin of Mesoamerica. These aceramic deposits date to between 7500 and 3800 cal BP and have been interpreted as locations where foragers, living elsewhere seasonally on the coastal plain, harvested shellfish and other estuarine resources. Based on an accumulation of paleoecological data from elsewhere in the lowland Neotropics of Mesoamerica, southern Central America and South America we pose and provide a first test of an alternative subsistence model: that the Archaic Period populations in this area were slash and burn farmers. Burned maize phytoliths first appear in these sedimentary records at 6500 cal BP in association with macroscopic charcoal and forest disturbance plant taxa. Periodic burning and forest disturbance, consistent with farming activities, are also evident in the macroscopic charcoal record between 6500 and 4700 cal BP. Pollen, phytolith and charcoal records all point to sustained burning, forest disturbance and the cultivation of maize between 4700 and 3800 cal BP. These data suggest that people were slash and burn farming during the Archaic Period prior to the adoption of pottery and the proliferation of Early Formative Period villages and full-fledged agriculture based on near or total reliance on crop plants after ∼3800 cal BP.     

Detecting the environmental impact of the Baltic Crusades on a late-medieval (13th–15th century) frontier landscape: palynological analysis from Malbork Castle and hinterland,Northern Poland

Palaeoecological analysis of peat deposits from a small bog, combined with pollen analysis of sediments infilling the moat of the nearby Teutonic Order castle at Malbork, have been used to examine the ecological impact of the Crusades on the late-medieval landscape of Northern Poland. Studies of the environmental impact of the Crusades have been almost exclusively informed by written sources; this study is the first of its type to directly investigate the environmental context of Crusading as a force of ecological transformation on the late-medieval Baltic landscape. The pollen evidence from Malbork Castle and its hinterland demonstrate that the 12th/13th–15th centuries coincide with a marked transformation in vegetation and land-use, characterized by clearance of broadleaved woodland and subsequent agricultural intensification, particularly during the 14th/15th centuries. These changes are ascribed to landscape transformations associated with the Teutonic Order’s control of the landscape from the mid-13th century. Human activity identified in the pollen record prior to this is argued to reflect the activities of Pomeranian settlers in the area. This paper also discusses the broader palaeoecological evidence for medieval landscape change across Northern Poland.     

Locally diagnostic phytoliths of wild rice (Zizania palustris L.) from Minnesota,USA: comparison to other wetland grasses and usefulness for archaeobotany and paleoecological reconstructions

Wild rice (Zizania spp.) is an important native grain of north-central North America, with spiritual and subsistence significance to many native peoples. Due to lack of suitable proxies, its past distribution and pattern of use are poorly known. This study demonstrates the diagnostic value of silica phytoliths from Z. palustris as a proxy tool to detect its past occurrence in a variety of paleoenvironmental and archaeological contexts. Our main findings are: 1) Dominant wetland grass species in Minnesota produce phytoliths distinct from Zizania phytoliths; 2) Closely related Leersia oryzoides produces a few Zizania-like phytolith morphotypes; however, these potential confusers can be identified based on 2-D and 3-D morphologies; 3) Z. palustris produces a wide variety of phytolith morphotypes, many of which are only found in certain parts of the plant (e.g., Inflorescence Type 1 from the spikelet); 4) Z. palustris produces 23 locally diagnostic phytolith morphotypes that can be used to determine the presence and abundance of wild rice in modern and paleo lake sediments; and 5) Wild rice phytolith Inflorescence Type 1 is the morphotype most likely to be observed in archaeological contexts, and may be unequivocally diagnostic for the genera Zizania.     

Palynological interpretation of the Early Neolithic coastal open-air site at Sa Punta (central-western Sardinia,Italy)

The major goal of the present study has been to assess the ecological context of the Early Neolithic settlement under excavation in the coastal site of Sa Punta-Marceddì (Terralba, Sardinia, Italy) where a trench of Neolithic age has been brought to light. Based on the origins of the site's organic fossiliferous content, the purpose of this work is to achieve an understanding of: 1) the reasons why this location was chosen by EN man and 2) its functions. This research has enabled us to suggest a human paleoecological scenario over the course of the last three centuries of the 6th millennium BC in the inland area of the Oristano Gulf. On the basis of pollen spectra and the phytolith morphologies recognised, it is suggested that herbaceous vegetation covered the alluvial plain. Arable agriculture does not seem to have been practiced on the site, but the record of coprophilous fungi and endoparasites, along with clues that there were burning practices, suggest livestock farming activity. To date, a univocal interpretation of the function of this trench is still lacking. However, it is the oldest and the only evidence in Sardinia of a remarkable transformation of an open-air space due to settlement.