A Reexamination of the Cotton Remains from Huaca Prieta, North Coastal Peru

1975 ◽  
Vol 40 (4) ◽  
pp. 406-419 ◽  
Author(s):  
S. G. Stephens
Keyword(s):  
Seed Size ◽  
Amazon Basin ◽  
Initial Period ◽  
Central Coast ◽  
The North ◽  
The Andes ◽  
Peruvian Coast ◽  
Primitive Condition ◽  
Primitive Forms ◽  
Human Selection

An analysis of cotton remains from Huaca Prieta on the north Peruvian coast, dating from circa 2500 B.C. to circa 750 B.C., indicates that they were probably primitive forms of G. barbadense L. and similar in most features to those previously examined from sites in the Ancon area of the central coast (Stephens and Moseley 1974). As in the Ancon materials, there is a tendency for seed size, boll size and fiber width to increase from the earlier to later levels. Most of the Ancon materials belonged to the Preceramic Period, while at Huaca Prieta both Preceramic and Initial Periods are represented. Only fuzzy seeds were found among the Ancon materials and among the Preceramic materials recovered from Huaca Prieta. Tufted seeds first appear during the Initial Period at Huaca Prieta; it is the prevailing type among present-day cultivars, and may have been favored under human selection because their fibers are much more readily removed from the seeds by hand. It is believed that fuzzy seeds represent the more primitive condition; it is the prevailing type among present-day wild forms of G. barbadense. It remains a question whether the tufted seeds at Huaca Prieta originated as mutants in the locally cultivated fuzzy seeded types, or whether they were new forms, introduced along with pottery and other crop plants from elsewhere. None of the cotton materials so far examined from Peruvian coastal sites show affinities with cottons still extant in the Amazon Basin, and no wild, or apparently wild, forms of G. barbadense have yet been found east of the Andes.

Population Centers of the Rimac Valley of Peru

1954 ◽  
Vol 20 (2) ◽  
pp. 130-148 ◽  
Author(s):  
Louis M. Stumer
Keyword(s):  
Sea Level ◽  
North Coast ◽  
Central Coast ◽  
Easy Task ◽  
The North ◽  
Atypical Features ◽  
Peruvian Coast ◽  
Northern Peru ◽  
North Coast Of Peru

This Article is intended less as a descriptive piece on the archaeology of the Rimac Valley than it is as a single-valley application of various conclusions reached by Richard P. Schaedel in his Major Ceremonial and Population Centers in Northern Peru (1951). Schaedel, in a broad synthetic study of major ruins on the North Coast of Peru, comes to several interesting conclusions on the “urban revolution” in that region. The author, who was already engaged in a survey of the Rimac, with the focus on the coastal cultures from sea level to the 1000-meter line, felt impelled to shift the emphasis of his survey from straight description to a Central Coast application of Schaedel's North Coast findings. This was a fairly easy task, as the sites were already being analyzed both architecturally and ceramically.The Rimac, the “valley of Lima,” presents sufficient of both typical and atypical features of a Peruvian coastal valley to make the application of Schaedel's theories to a single valley at least fairly indicative of their validity for the entire Peruvian coast.

The Andean Cultural Frontier

1963 ◽  
Vol 5 (4) ◽  
pp. 431-436 ◽  
Author(s):  
Edmund E. Hegen
Keyword(s):  
Amazon Basin ◽  
Eastern Region ◽  
Physical Barrier ◽  
The North ◽  
The Andes ◽  
Inca Empire ◽  
Cultural Boundary ◽  
Western Border ◽  
Forest Line

From the Sierra Macarena in the north to the Sierra Divisor east of the Río Ucayali, the eastern ranges of the Andes form an amphitheater along the western border of the Upper Amazon Basin. This Andean arc was for centuries a combined physical and cultural boundary. The noman's land of the Ceja and the hostility of the Montaña with its rough relief, short lateral valleys, turbulent rivers, and with the “conservatism of the forest” represented a rigid and formidable physical barrier.The eastern region of the Inca Empire, Anti-Suyo, certainly never reached far beyond the forest line along the eastern ranges. The deepest penetration into the Selva took place probably under Inca Túpac Yupanqui, during the wars against the Shiris, who settled around “Chachapuyas and Muyupampas.”

Ventilated Hearth Structures in the Casma Valley, Peru

1996 ◽  
Vol 7 (4) ◽  
pp. 341-353 ◽  
Author(s):  
Thomas Pozorski ◽  
Shelia Pozorski
Keyword(s):  
Native American ◽  
Small Groups ◽  
Initial Period ◽  
Religious Tradition ◽  
Central Coast ◽  
North Central ◽  
The North ◽  
Preceramic Period

Recent investigations in the Casma Valley on the north-central coast of Peru have uncovered a series of circular and rectangular/square structures, each containing a central hearth associated with either four subfloor ventilation shafts or a single open ventilation trough. The structures date to the Late Preceramic period (2500-1800 B. C.) and the Initial period (1800-900 B. C.). All are small and were originally roofed with perishable materials to hold in heat and smoke from the central hearth. It seems likely that these ventilated hearths represent a coastal variant of the Kotosh Religious Tradition that has been well documented in the Peruvian Highlands. The structures probably served as ritual chambers for small groups of people, somewhat analogous to the sweathouses of various Native American groups.

Extreme Summer Convection in South America

2010 ◽  
Vol 23 (14) ◽  
pp. 3761-3791 ◽  
Author(s):  
Ulrike Romatschke ◽  
Robert A. Houze
Keyword(s):  
South America ◽  
Amazon Basin ◽  
Three Dimensional ◽  
Tropical Rainfall Measuring Mission ◽  
Central Andes ◽  
South Atlantic Convergence Zone ◽  
Reanalysis Data ◽  
The North ◽  
The Andes ◽  
Environmental Prediction

Abstract Tropical Rainfall Measuring Mission (TRMM) Precipitation Radar (PR) and National Centers for Environmental Prediction–National Center for Atmospheric Research (NCEP–NCAR) reanalysis data are used to indicate mechanisms responsible for extreme summer convection over South America. The three-dimensional reflectivity field is analyzed to define three types of extreme echo, deep convective cores, wide convective cores, and broad stratiform regions. The location and timing of these echoes are sensitive to midlatitude synoptic disturbances crossing the Andes. At the leading edges of these disturbances the nocturnal South American low-level jet (SALLJ) transports moisture along the eastern edge of the Andes from the tropical to the subtropical part of the continent. Where the SALLJ rises over lower but steep mountains on the east side of the southern central Andes, deep and wide convective cores are triggered in the evening. When the SALLJ withdraws to the north as the disturbance passes, nocturnal triggering occurs in the northeastern foothills of the central Andes. Extreme convection over the Amazon basin takes the form of broad stratiform regions that evolve from systems with wide convective cores moving into the center of the region from both the southwest and northeast. The systems from the northeast form at the northeast coast and are likely squall lines. Along the coast of the Brazilian Highlands, diurnal/topographic forcing leads to daytime maxima of deep convective cores followed a few hours later by wide convective cores. Wide convective cores and broad stratiform regions form in the South Atlantic convergence zone (SACZ) with a diurnal cycle related to continental heating.

scholarly journals Evaluation of Diverse-based Precipitation Data Over the Amazon Region

2021 ◽  
Author(s):  
Camila Sapucci ◽  
Victor C. Mayta ◽  
Pedro Silva Dias
Keyword(s):  
Remote Sensing ◽  
Amazon Basin ◽  
Objective Assessment ◽  
Tropical Rainfall Measuring Mission ◽  
Rain Gauge ◽  
The Other ◽  
The North ◽  
The Andes ◽  
Seasonality Index ◽  
Diurnal Rainfall

Abstract The skill of the diverse-based precipitation products is investigated in comparison with HYBAM rain-gauge observations. The performance of three remote sensing-based datasets (the Climate Hazards Group InfraRed Precipitation with Station, CHIRPS, the Multi-Source Weighted-Ensemble Precipitation, MSWEP, and the Tropical Rainfall Measuring Mission, TRMM) is evaluated considering different timescales for the Amazon Basin, an area with widely heterogeneous precipitation. The analysis considered seasonal, intraseasonal and diurnal timescales through the computation of the cluster analysis, the seasonality index, the Kling-Gupta Efficiency metric, spectral analysis and composing technique. CHIRPS has the lowest performance to represent the rainfall in the northwest portion of the basin, where it underestimated the mean precipitation compared to the other bases. In this region, the other remote sensing-based (TRMM and MSWEP databases) compared to HYBAM also showed considerable variability and misrepresentation of the intraseasonal rainfall. In general, all databases perform better in the north and eastern portions of the basin compared to HYBAM. The comparison of the diurnal rainfall cycle between remote sensing-based data and the field campaigns of TRMM-LBA and GoAmazon, and the Huayao station in the Andes was also evaluated. At the diurnal timescale, MSWEP predates the time of the rainfall peak, but represents the magnitude of the precipitation well compared with TRMM. This study is necessary to warn about the importance of a more complete and objective assessment of the data before considering it for applications in different precipitation studies, mainly in regions with high rainfall heterogeneity like the Amazon Basin.

Evidence for Interregional Relationships during the Middle Horizon on the North-Central Coast of Peru

1979 ◽  
Vol 44 (4) ◽  
pp. 676-684 ◽  
Author(s):  
Ruth Shady ◽  
Arturo Ruiz
Keyword(s):  
Political Integration ◽  
Central Coast ◽  
Middle Horizon ◽  
North Central ◽  
The North ◽  
Peruvian Coast ◽  
Distributional Patterns

A burial at Vegueta on the central Peruvian coast contained pottery assignable to two regional styles. This association supplements other evidence for widespread interaction during the Middle Horizon. These distributional patterns are compatible with the hypothesis that several powerful commercial centers existed at this time, rather than the kind of political integration implied by the Huari Empire.

scholarly journals Cacao Diseases—The Trilogy Revisited

2007 ◽  
Vol 97 (12) ◽  
pp. 1640-1643 ◽  
Author(s):  
Harry C. Evans
Keyword(s):  
Amazon Basin ◽  
Control Strategies ◽  
Phytophthora Species ◽  
The North ◽  
Molecular Approaches ◽  
The Andes ◽  
Black Pod ◽  
Fallen Fruit ◽  
The Impact ◽  
Frosty Pod Rot

This paper reviews the significant advances by the diseases themselves, as well as by the scientists, in the intervening period since the disease trilogy was first delimited in 1989. The impact of these diseases, black pod, witches' broom, and frosty pod rot, has increased dramatically. In addition, there have been radical changes in the taxonomic profiles of these pathogens, which have been based on both traditional (morphological, cytological) and modern (molecular) approaches. Black pod is caused by a complex of Phytophthora species, in which P. palmivora still is the most important worldwide. However, recent invasion of the principal cacao-growing countries of West Africa by the more virulent P. megakarya has been cause for concern. The latter evolved in the ancient forests straddling the Cameroon-Nigerian border as a primary coloniser of fallen fruit. Conversely, frosty pod rot, caused by Moniliophthora roreri, and witches' broom, caused by M. (Crinipellis) perniciosa, both neotropical diseases, are hemibiotrophic, coevolved pathogens. Respectively, M. roreri arose on Theobroma gileri in submontane forests on the north-western slopes of the Andes, whereas M. perniciosa developed as a complex of pathotypes with a considerably wider geographic and host range within South America; the cacao pathotype evolved on that host in the Amazon basin. The inter-relationships of these vicariant species and their recent spread are discussed, together with control strategies.

The Role of Ideology in Emerging Hierarchies at Late Archaic and Early Horizon Sites along the Central Coast of Peru

2016 ◽  
Author(s):  
Jessica Joyce Christie ◽  
Matthew Piscitelli
Keyword(s):  
Social Transformation ◽  
Social Changes ◽  
Collective Actions ◽  
Late Archaic ◽  
Central Coast ◽  
Stone Monuments ◽  
Norte Chico ◽  
The North ◽  
The Andes ◽  
Early Horizon

This chapter discusses how stone monuments at selected Late Archaic (3000–1800 B.C.) and Early Horizon (1200–200 B.C.) sites on the north central coast of Peru provide insights into social transformation processes across collective and autocratic societies. The monuments under analysis are upright stone slabs (huancas) found at a number of Late Archaic sites in the Norte Chico region, as well as the row of towers at Chankillo dated to the late Early Horizon in the Casma Valley. Christie and Piscitelli argue that these upright stone monuments demarcated places and spaces in which people coordinated collective actions representing varying trajectories of social change. The political and ritual landscapes constructed at the Norte Chico and Chankillo sites were decidedly inward-oriented, concerned with establishing community centers and creating order. The sheer scale of the settings and the related coordination of ritual use there suggest emerging elites and corporate hierarchies. Following the trajectory of an expansionist state on the other hand, the Inca political landscape looks outward from long-existing centers. Comparative study of stone monuments and their associated ideologies, along with the study of place-making, can help illuminate social changes in the Andes over time.

The Archaeological Record of Chili Peppers (Capsicum spp.) and the Sequence of Plant Domestication in Peru

1969 ◽  
Vol 34 (1) ◽  
pp. 54-61 ◽  
Author(s):  
Barbara Pickersgill
Keyword(s):  
Amazon Basin ◽  
Initial Period ◽  
Plant Domestication ◽  
Capsicum Chinense ◽  
Archaeological Material ◽  
Peruvian Coast ◽  
Early Horizon ◽  
Capsicum Spp ◽  
New Varieties ◽  
Chili Peppers

AbstractStudy of archaeological material of chili peppers (Capsicum spp.) from the sites of Huaca Prieta and Punta Grande on the coast of Peru has shown that the first species to be cultivated was C. baccatum, which was probably domesticated in Bolivia. This pepper reached the Peruvian coast during the same period as four other crop plants of probably southern Peruvian or Bolivian origin, which suggests that southern contacts were important during the late Preceramic stage. During the Initial period, maize (probably of Mexican origin) and peanuts (possibly domesticated in Bolivia) spread along the coast. Another pepper, Capsicum chinense, which is thought to have been domesticated in the lowlands of the Amazon Basin, apparently also reached the coast at about the same time as pottery. Manioc likewise arrived on the coast during this period, and there may have been an introduction of new varieties of maize from Mexico. These crops suggest a mixture of tropical forest and Middle American contacts during the Initial period and the Early horizon.

Singa Transitional: Rock-art Saywas Marking Boundaries of Identity and Socializing Landscape in Huánuco, Peru

2021 ◽  
Vol 31 (2) ◽  
pp. 247-263
Author(s):  
Jonathan J. Dubois
Keyword(s):  
Material Culture ◽  
Rock Art ◽  
Social Changes ◽  
Regional Survey ◽  
Intermediate Period ◽  
Social Trends ◽  
The North ◽  
The Andes ◽  
Early Horizon ◽  
Landscape Feature

This paper introduces a new art style, Singa Transitional, found painted onto a mountainside near the modern town of Singa in the north of Huánuco, Peru. This style was discovered during a recent regional survey of rock art in the Huánuco region that resulted in the documentation of paintings at more than 20 sites, the identification of their chronological contexts and an analysis of the resulting data for trends in changing social practices over nine millennia. I explore how the style emerged from both regional artistic trends in the medium and broader patterns evident in Andean material culture from multiple media at the time of its creation. I argue that the presence of Singa Transitional demonstrates that local peoples were engaged in broader social trends unfolding during the transition between the Early Horizon (800–200 bc) and the Early Intermediate Period (ad 0–800) in Peru. I propose that rock art placed in prominent places was considered saywa, a type of landscape feature that marked boundaries in and movement through landscapes. Singa Transitional saywas served to advertise the connection between local Andean people and their land and was a medium through which social changes were contested in the Andes.

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