Late Holocene Changes in Shellfishing Behaviors From the Gulf of Carpentaria,Northern Australia

ABSTRACT

Dramatic changes in shellfishing behaviors occur across northern Australia during the late Holocene, marked most conspicuously by the cessation of large shell mound construction in some areas, and the reorganization of shellfishing behaviors towards more intensive production in the last 1,000 years. Excavations reveal rapid and widespread changes within coastal sites, an increasing diversification in overall subsistence resources, and patterns of increase in site establishment and use. Some of these changes have been argued to be associated with increasing climate variability and a trend towards increasing aridity during the late Holocene, thought to have transformed coastal ecosystems and mollusc availability. However, when these hypotheses are tested at the local level, more nuanced patterns of human-environment interaction emerge, which call into question interpretations based on broad-scale climate records. We suggest that disjunctions in the timing of the cessation of shell mound construction noted between the west and east Gulf of Carpentaria may be related, at least in part, to the timing and intensity of external cultural contacts with Macassan seafarers, associated with reorganization of mobility and production strategies, rather than as yet undemonstrated environmental changes impacting on shellfish availability.     

Land Uses and Environmental Conflicts in the Arcachon Bay Coastal Area: An Analysis in Terms of Heritage

Abstract

Coastal zones are specific areas which usually have natural resources of particular interest from ecological and heritage points of view. They are nevertheless subject to considerable pressure because of their attractiveness. Integrated coastal zone management is supposed to take into account these multiple factors in order to preserve natural resources and to allow for coastal development. In this context, land-use conflicts may emerge. This study aims to identify such conflicts and to explain them in terms of heritage conventions. An interesting methodology is implemented, using both focus groups' representations and daily press articles concerning the specific coastal zone of Arcachon Bay in the south west of France. The results raise questions on the link between water and land in coastal land-use management.     

The earliest evidence of domesticated wheat in the Crimea at Chalcolithic Ardych-Burun

Abstract

This paper reports the discovery of the earliest evidence of domesticated wheat in the Crimean peninsula from the Ardych-Burun shell midden site, Ukraine. The Ardych-Burun site dates to middle of the 4th millennium cal b.c. For the first time, the chronology of a Ukrainian Chalcolithic period site has been established through direct radiocarbon dating of cereal grains retrieved from it. This discovery allows for a wider discussion of the chronology and geographical origins of domesticated plant species in Ukraine and the role the Caucasian corridor may have played in the spread of agriculture into eastern Europe. The presence of cereal crops in the southern Crimea enriches our understanding of the subsistence strategies of the coastal population, which was previously linked only with pastoralism, hunting, and the exploitation of marine resources.     

Midden or Molehill: The Role of Coastal Adaptations in Human Evolution and Dispersal

Coastal adaptations have become an important topic in discussions about the evolution and dispersal of Homo sapiens. However, the actual distribution and potential relevance of coastal adaptations (broadly, the use of coastal resources and settlement along shorelines) in these processes remains debated, as is the claim that Neanderthals exhibited similar behaviors. To assess both questions, we performed a systematic review comparing coastal adaptations of H. sapiens during the African Middle Stone Age (MSA) with those of contemporaneous Neanderthals during the European Middle Paleolithic. In both species, systematic use of marine resources and coastal landscapes constitutes a consistent behavioral signature over?~?100,000 years (MIS 6–3) in several regions of Africa and Europe. We found more similarities than differences between Neanderthals and modern humans, with remaining disparities all in degree rather than kind. H. sapiens exploited a wider range of marine resources—particularly shellfish—more intensively. MSA shellfish-bearing sites are also more often associated with intense occupations on coastal landscapes, and more evidence of complex material culture such as shell beads. In terms of broader ramifications, Pleistocene coastal adaptations are best conceived of as an ‘add-on’ to previous adaptive strategies, complementing more frequently exploited inland resources and landscapes. Still, Neanderthals and modern humans increased their dietary breadth and quality, and added options for occupation and range expansion along coastlines. Potential evolutionary implications of these multi-generational behaviors include higher intakes of brain-selective nutrients as a basis for neurobiological changes connected to increased cognitive capacities, but also greater reproductive success, dispersal abilities and behavioral flexibility. Whether gradual differences between modern humans and Neanderthals stimulated different evolutionary trajectories is a question for future research.

     

Shells below,stars above: four perspectives on shell beads

ABSTRACT

In the papers assembled here, five scholars focus on shell beads at site, watershed, and regional scales. Themes include manufacturing techniques such as bore size discussions, changes in bead preferences over time and geography, the appearance of beaded regalia, and shell bead meaning. Claassen’s paper addresses the beads at Late Archaic Indian Knoll; Connaway discusses shell beads in northwestern Mississippi; Pearson looks at beads from coastal Georgia; and Webster and King examine beads before and after European contact in the Potomac basin.     

Coils,slabs, and molds: examining community affiliation between Late Archaic shell ring communities using radiographic imagery of pottery

ABSTRACT

Radiographic imaging is used to determine the techniques used to form vessels from two contemporaneous Late Archaic shell rings in coastal Georgia. These data, in concert with decorative and technofunctional data, suggest that different potting communities occupied each ring. The presence of different communities at each ring corresponds with larger regional patterns in which localized socio-political bodies developed during the Late Archaic. The findings offered in this paper suggest that localized groups did not exist in isolation but rather lived near one another for centuries.     

Archaeological survey,paleogeography, and the search for Late Pleistocene Paleocoastal peoples of Santa Rosa Island,California

Abstract

The northern Pacific Coast is an important area for understanding human colonization of the Americas, but Late Pleistocene coastal sites are rare and interglacial sea level rise has inundated the continental shelf and the primary areas where Paleocoastal archaeological sites are likely to occur. Here we outline a terrestrial archaeological survey project designed to identify Paleocoastal sites on Santa Rosa Island, California. Using reconstructions of ancient shorelines and paleogeography, we predicted that sites might be found where lithic resources, freshwater springs, caves or rockshelters, and strategic vistas drew Paleocoastal peoples into the island interior. We identified nine new Paleocoastal sites, including four radiocarbon dated to >11,000 cal b.p. that are among the oldest sites on North America’s Pacific coast. Our targeted survey demonstrates an important technique for investigating island and coastal settings where sea level rise remains a significant challenge for locating early sites.     

Terrestrial hermit crabs (Anomura: Coenobitidae) as taphonomic agents in circum-tropical coastal sites

Hermit crabs are ever alert for more suitable shells to inhabit, but what this may mean for coastal shell middens has rarely been considered. Here, the impact of the most landward-based of hermit crab families, the tropical Coenobitidae, upon archaeological shell-bearing deposits is assessed using a case study: the Neolithic Ugaga site from Fiji. At Ugaga, hermit crabs were found to have removed the majority of shells from the midden and had deposited their old, worn shells in return. The behavioural ecology of genus Coenobita suggests a mutualistic interaction whereby humans make available shell and food resources to hermit crabs, which in turn provide a site cleaning service by consuming human and domestic waste. Diagnostic indicators of terrestrial hermit crab wear patterns on gastropod shells are outlined and the conditions under which extensive ‘hermitting’ of shell midden deposits may occur are investigated. The ability to recognise hermit crab modification of shells is considered not only important for archaeomalacologists analysing tropical shell deposits, but also for field archaeologists wishing to select suitable shell samples for radiocarbon dating.     

Oxygen isotope seasonality in a temperate estuarine shell midden: a case study from CA-ALA-17 on the San Francisco Bay,California

Seasonality determination using stable oxygen isotope (δ¹⁸O) analyses in archaeological mollusk shell has been largely limited to aquatic settings where one of the two factors that control shell δ¹⁸O – water δ¹⁸O (or salinity) and temperature – is assumed to be constant. Open coastal marine environments reflect the former situation, and tropical estuaries constitute the latter. In an effort to expand stable isotope seasonality to an ecological setting where neither variable remains constant, we present a model of annual shell δ¹⁸O cycle of aragonite deposition derived from instrumental data on salinity and temperature from San Francisco Bay, California. The predicted range of modeled shell δ¹⁸O is consistent with observed δ¹⁸O values in prehistoric and modern shells when local conditions are considered. Measurements of δ¹⁸O taken at 0 mm and 2 mm from the terminal growth margin were made on 36 archaeological specimens of Macoma nasuta from a late Holocene hunter-gatherer site CA-ALA-17, and season of collection was inferred using the shell δ¹⁸O model. We conclude that shellfish exploitation occurred through the year with the exception of fall, which may indicate scheduling conflicts with acorn harvesting or other seasonally abundant resources elsewhere. The model supports the feasibility of stable isotope seasonality studies in temperate estuaries, provided that instrumental records are available to quantify the relevant water conditions at appropriate spatial and temporal scales.     

Modelling Resource Values and Climate Change Impacts to Set Preservation and Research Priorities

ABSTRACT

Climate change impacts will increase in their frequency and severity in the coming decades, resulting in compromised integrity or destruction of thousands of heritage resources. Efforts are needed to identify, record, and study resources that will be affected. To set research and preservation priorities, the vulnerability of resources to climate change impacts and their importance to scientific research, preservation, and other resource values needs to be understood. We advocate a modelling approach which predicts the location, timing, and severity of climate change impacts; identifies resources at risk, their resource values, and opportunity costs; and prioritises research and preservation options based on these assessments. The need for this approach is illustrated with examples from two coastal areas subject to different impacts and hosting different types of heritage resources: the Atlantic coast of Georgia in the United States and the Wismar Bight along the Baltic Sea in northern Germany.     

Stable isotopic analysis of human and faunal remains from the Incipient Chulmun (Neolithic) shell midden site of Ando Island,Korea

We analyzed stable carbon and nitrogen isotope ratios of human and animal remains from the Ando shell midden, South Korea. The Ando site is a rare Incipient Chulmun (Neolithic) site (ca. 6000–5000 BC), which contains well-preserved human and animal bones in shell mounds. The stable isotope results for humans (average δ¹³C = −13.5 ± 0.5‰ and δ¹⁵N = 15.2 ± 0.5‰) indicate that Ando people in the Incipient Chulmun period strongly depended on marine resources. There were no isotopic differences between humans of different sex and age at this site. We compared our data with other previous published isotopic data from the Chulmun sites and found that the Ando people had similar isotope values to the southern Chulmun people (Tongsamdong and Daepo), but different isotopic ratios than the western Chulmun people (Daejukri and Konamri). These results indicate that marine foods were the main food resources in the southern coastal regions, but not in the western coastal regions in Chulmun Korea.     

OYSTER DEMOGRAPHICS AND THE CREATION OF COASTAL MONUMENTS AT ROBERTS ISLAND MOUND COMPLEX,FLORIDA

Abstract

Anthropogenic coastal landscapes often incorporate shell, a durable remnant of subsistence activity. Collection, consumption, and even feasting can thus contribute to histories of site formation and mound construction. This research assesses how oyster consumption related to the creation of Mound A, a shell mound at the Roberts Island Shell Mound Complex in Citrus County, Florida, is differentiated from the instances of oyster consumption that resulted in the midden constituting the rest of the island. I compare the size of shell remains from mound and off-mound midden contexts to assess variation in the sizes represented across the samples, stratigraphic variation within each context, and evidence for directional change indicative of over-exploitation. I identify a relationship of dependence between shell size and stratigraphic depth in off-mound samples that does not appear in mound samples, suggesting a relatively short period of time for the accumulation of mound deposit oyster shells. The findings of this study point to mound construction at Roberts Island Shell Mound Complex as a distinct and deliberate activity, with the construction event likely sharing importance with the community aggregation and consumption that facilitated it.     

Shellfish Exploitation in the Western Canary Islands Over the Last Two Millennia

ABSTRACT

The residents of the Canary Archipelago consumed limpets since the arrival of humans ～2500 yrs. ago, and these harvested gastropods were deposited in large coastal shell middens. This work preliminarily explores shell margin oxygen isotope composition (δ¹⁸O) and body size of the black limpet (Patella candei d’Orbigny, 1840) from archaeological sites in the Canary Islands to assess possible seasonal variability and intensity of shellfish collection throughout the late Holocene. The shell margin δ¹⁸O values of 100 shells (radiocarbon dated between ～500 and ～1800 cal. yr BP) were analysed to estimate sea surface temperature (SST) at time of death. Paleotemperature estimates suggest shellfish harvesting was not year-round, and was avoided in the cooler months (when SST?<?20°C). This pattern differs from most higher latitude Mesolithic and Neolithic human groups, which gathered shellfish year-round, targeting winter more heavily. Preliminary body-size measurements suggest shell sizes have experienced a decline from aboriginal times to the present, which possibly resulted from increasing anthropogenic pressures. During aboriginal inhabitation, maximum adult shell size remained stable, suggesting that present-day harvesting practices are more intense than harvesting from aboriginal human groups. This intensive collection has likely diminished the average adult size of limpet populations in the islands by ～27%.     

Prehistoric shell beads on the Georgia coast

ABSTRACT

The prehistoric peoples living along the Georgia coast fabricated and used shell beads for millennia. Out of a number of mollusk species inhabiting the region, only a few were selected for the fabrication of beads. The knobbed whelk (Busycon carica) was the most common species used, and it represents the most common whelk found in Atlantic coastal waters. The lightning whelk (Busycon sinistrum), the second most common whelk in the region, was occasionally used in the production of beads. Small numbers of beads were made from marginella and olive shells and, rarely, from bivalve species. Small beads were manufactured from the body whorl of whelks, while larger beads were fabricated from whelk collumella. Shell beads appear in small quantities in Late Archaic period contexts, and then almost disappear during the Woodland period. Beads reappear in quantities at about AD 800 in the Early Mississippian period. More shell beads have been recovered from Mississippian period archaeological contexts along the northern Georgia coast than along the southern coast, reflective of cultural differences between these two geographic areas in the post-Woodland period era.     

Coşkuntepe: An Early Neolithic Quern Production Site in NW Turkey

Abstract

Co?kuntepe, an Early Neolithic site in the coastal Troad region of NW Turkey, has evidence for quern making dating to around 6000 calibrated radiocarbon years B.C. The surface debris at the site consists largely of tested blocks of stone, discarded and broken rough-outs, percussion flakes, and used and broken hammerstones. The implications of this early production system are discussed within the broader framework of the Aegean Neolithic. The results of this analysis demonstrate that the Neolithic inhabitants of Co?kuntepe adapted themselves to a rugged, hilly coastal environment by including quern production in their domestic economy to supplement the subsistence base of the village. It seems that the abundance of geologic deposits suitable for making querns provided an opportunity for the inhabitants of this coastal site to pursue a productive non-agricultural strategy.     

Shell beads from Mississippian sites in the northern Yazoo Basin,Mississippi

ABSTRACT

In this paper, which focuses on the Mississippian period in the northern Yazoo Basin, Mississippi, I present some interesting findings from research done over the past century. In this area, most shell beads come from surface collections, or from excavated burials in cemeteries or ossuaries. Burial styles include extended, flexed, semi-flexed, and bundles, with very few cremations having been encountered. Bead burials also seem to reflect both common and elite people, and there are some interesting discoveries concerning association of shell beads. I will use 33 archaeologically investigated major sites as examples to illustrate an unexpected paucity of shell beads and other shell ornaments at some of the most heavily populated Mississippian sites in the Lower Mississippi Valley. Two other sites with shell beads in the uplands will be used for comparison.     

Focus: sulphur isotope variation in archaeological marine fauna from northern Europe

We undertook combined stable carbon, nitrogen and sulphur isotope analysis of marine and terrestrial faunal remains from two prehistoric coastal shell middens in Denmark. The aim of the investigation was to establish whether sulphur isotopes were useful in discriminating terrestrial and marine consumers in this region. We found that sulphur isotopes do separate marine and terrestrial fauna but, contrary to our expectations, we observed a negative correlation between δ³⁴S and δ¹³C values for marine fauna. We conclude that similar studies over a broader geographical range are needed before sulphur isotopes can be reliably used to study coastal resource exploitation.     

Early Maritime Desert Dwellers in Namaqualand,South Africa: A Holocene Perspective on Pleistocene Peopling

ABSTRACT

South Africa's northern Namaqualand coastal desert is the southern extension of the Namib. Today, this region is semi-desert with patchy subsistence resources and scarce, unpredictable rainfall. Yet this ancient desert landscape possesses residues of human activity stretching back into the Middle Pleistocene, evidenced by heavily weathered surface finds, including handaxes and Victoria West cores. Such old finds in so harsh an environment raise important questions: how do human movements into this area relate to local palaeoenvironmental changes, and how has this relationship changed through time? While no dated Middle Pleistocene sites presently exist to reconstruct the earliest hominin dispersals, several late Pleistocene sites now have chronostratigraphic sequences that can be brought to bear on these questions. This article presents chronological and subsistence-settlement data for one such site, Spitzkloof A Rockshelter in northern Namaqualand's rugged Richtersveld. Humans are shown to have visited the site very sporadically between ～50,000 and 17,000 cal BP. Unlike most of the subcontinent, the most intensive occupations occur during early Marine Isotope Stage 2, when multiple proxies suggest enhanced humidity associated with intensified winter rainfall. We examine these data using the region's better-developed Holocene archaeological record to create predictions about the earliest coastal desert dwellers.     

Landesque capital as an alternative to food storage in Melanesia: Irrigated taro terraces in New Georgia,Solomon Islands

Abstract

In the Pacific islands, subsistence diversity made possible continuous production of food while well-developed exchange networks redistributed these foodstuffs as well as items within the prestige economy. All these were aspects of the ‘storage structures’ that enabled social and nutritional value to be saved, accumulated and later mobilised. In addition, there were investments in the land, landesque capital, which secured future food surpluses and so provided an alternative to food storage, in a region where the staple foods were mostly perishable, yams excepted, and food preservation was difficult. Landesque capital included such long-term improvements to productivity as terraces, mounds, irrigation channels, drainage ditches, soil structural changes and tree planting. These investments provided an effective alternative to food storage and made possible surplus production for exchange purposes. As an example, in the New Georgia group of the western Solomon Islands irrigated terraces, termed ruta, were constructed for growing the root crop taro (Colocasia esculenta). Surplus taro from ruta enabled inland groups to participate in regional exchange networks and so obtain the shell valuables that were produced by coastal groups. In this paper, we reconstruct how this exchange system worked in New Georgia using ethno-archaeological evidence, we chart its prehistoric rise and post-colonial fall, and we outline the factors that constrained its long-term expansion.     

Using Stakeholder Decision-making Simulation to Teach Integrated Coastal Management

A simulation technique to teach aspects of stakeholder participation in integrated coastal management is described and evaluated. Through student feedback, it was found that the benefits of the simulation included improved understanding of interdisciplinary coastal issues, greater insight into the challenges facing contemporary coastal managers and an expanded suite of marketable skills. It is concluded that while this type of simulation requires a re-evaluation of the relationship between the lecturer and students, it has the potential to be transplanted successfully into other areas of geographic study that require understanding of participatory governance processes.