Comprehensive Notes on The Origins of Agriculture
The Origins of Agriculture
Introduction: The First Farmers
Agriculture marks a significant transition in human prehistory, shifting from a mobile hunter-gatherer lifestyle to settled food production. This transition is not merely a change in subsistence strategy but a fundamental restructuring of human societies and their relationship with the environment.
Wheat is a crucial domesticated crop, as evidenced by ancient Egyptian tomb paintings that highlight its importance. These paintings not only demonstrate wheat's role as a staple food but also its cultural and symbolic significance in early agricultural societies.
Agriculture involves domesticating plants and animals, fundamentally altering societal structure, organization, and the human-environment relationship. This domestication process leads to a more sedentary lifestyle, increased population densities, and the development of complex social hierarchies.
Farmers intensively use smaller landscapes, contrasting with hunter-gatherers' extensive exploitation of diverse resources. This intensive land use can lead to environmental changes, such as deforestation, soil erosion, and altered water patterns.
Domestication alters physical characteristics of plants/animals, influenced by species traits (generational length, life cycle, plasticity) and human manipulation intensity. Selective breeding and cultivation practices lead to genetic changes that make crops and livestock more suitable for human consumption and use.
Successful agriculture requires propagation (seed selection/animal breeding), husbandry (tending plants/animals during growth), harvesting/slaughtering, and storage to ensure annual reproduction. These practices require careful planning, labor organization, and knowledge of environmental conditions.
Cultivation involves clearing fields, preparing soil, weeding, protecting plants, and providing water. These activities transform natural landscapes into managed agricultural systems.
Domestication and Cultivation
Domestication: Taming wild plants/animals by humans, involving genetic modification through selective breeding to enhance desirable traits.
Cultivation: Human manipulation to enhance plant production, including sowing, weeding, and irrigation, to increase yields and ensure a reliable food supply.
Plant domestication is a gradual process (3000 years+) involving sowing, cultivating, harvesting, and soil modification. This extended timeline reflects the slow pace of genetic change and the accumulation of knowledge about plant behavior and environmental conditions.
Seed size increase follows similar paths across regions (Near East, China, India, North America). Larger seeds provide more nutrients and energy for germination and seedling growth, making them more desirable for cultivation.
Microscopic analysis of starch grains identifies early crops in South America, providing origin/distribution data. This method allows archaeologists to identify the presence of domesticated plants even in the absence of macrobotanical remains.
Genetic studies and ^{14}C dating are refining timelines, with rice cultivation in China potentially dating back 10,000 years. These advanced dating techniques provide more precise estimates of when and where agriculture first emerged.
Southwest Asia plant domestication is estimated around 10,500 years ago, marking one of the earliest known centers of agricultural development.
Sorghum domestication in Africa dates to ca. 5500 B.P., and donkeys were domesticated around 5000 years ago, indicating the gradual spread of agriculture and animal husbandry across the continent.
Ancient DNA studies reveal the spread of agriculture into Europe/Asia, showing population replacement in southern Europe and farmer-hunter mixing in northern Europe. These studies highlight the complex interactions between migrating farmers and indigenous hunter-gatherer populations.
Evidence for early domesticated plants primarily focuses on seed crops (cereals). Cereals (grasses with large, hard seeds) are well-preserved due to being burned during preparation/cooking. Their abundance in archaeological sites makes them a key source of information about early agriculture.
Cereals (grasses with large, hard seeds) are well-preserved due to being burned during preparation/cooking.
Root crops lack hard parts, making archaeological documentation difficult. Asexual reproduction makes distinguishing domesticated varieties challenging due to identical genetic structures across generations and significant species variation. Despite these challenges, recent research has identified root crops in prehistoric sites.
Asexual reproduction makes distinguishing domesticated varieties challenging due to identical genetic structures across generations and significant species variation.
Root crops (potatoes, yams, manioc, taro) may have been domesticated early, with recent identification in prehistoric sites.
Animals were initially domesticated for meat, except for dogs, which were used for hunting, pets, and food around 14,000 years ago. The early domestication of dogs highlights their unique role in human societies as companions and working animals.
Pigs, goats, sheep, and cattle were domesticated early, and their secondary products (milk, wool, horn, leather) became important, along with their use as beasts of burden. These secondary products revolutionized agricultural economies, providing new sources of food, fiber, and labor.
Storage of cereals (wheat, barley, corn, rice) allows seed survival until the growing season. Meat storage is achieved through live, tame animals available for slaughter, regulating food availability and accumulating surplus. These storage practices enabled year-round food availability and supported larger, more sedentary populations.
Meat storage is achieved through live, tame animals available for slaughter, regulating food availability and accumulating surplus.
Primary Centers of Domestication
Focus is on primary centers where plants/animals were first domesticated versus secondary areas that received domesticates from elsewhere. Identifying these primary centers is crucial for understanding the origins and spread of agriculture.
Six known primary centers:
Southwest Asia: Wheat, barley, rye, peas, lentils, figs, pigs, goats, sheep, and cattle appeared at the end of the Pleistocene. This region is considered one of the most important centers of early agricultural development.
East Asia: Millet was cultivated, and pigs were domesticated before 6000 B.C. Rice was cultivated in South China and Southeast Asia. Root crops were also in cultivation. The cultivation of rice in this region has had a profound impact on global food production and cultural practices.
Sub-Saharan Africa: African rice, sorghum, and pearl millet were domesticated by 2000 B.C. Cattle and goat herding occurred, and donkeys were domesticated by 3000 B.C. These domesticates played a crucial role in the development of agricultural systems adapted to the African environment.
Mesoamerica: Gourds and squash by the eighth millennium B.C.; avocados, chili peppers, beans, and corn later. Domesticated animals were not an important food source. Corn, in particular, has become a staple crop worldwide, with its origins in Mesoamerica.
South America: Gourds, tomatoes, beans, and potatoes by 3000 B.C. Guinea pigs and llamas were domesticated. Potatoes, now a major food crop globally, originated in the Andean region of South America.
North America: Marsh elder and goosefoot were domesticated by 1500 B.C., before corn introduction from Mexico. These early domesticates provided important food sources for indigenous populations before the arrival of corn.
Recent research adds South Asia (millets, indica rice, pulses, cotton, sesame) and the South Pacific (banana, taro, yam) to the list of primary domestication centers. These additions reflect the ongoing efforts to refine our understanding of the origins and spread of agriculture.
Domestication experiments occurred in rich environments with high population and resource concentrations. These conditions likely facilitated the development of agriculture by providing both the resources and the motivation for experimentation.
Multiple domestication centers exist within each region for various species, reflecting the diverse environmental conditions and cultural practices that shaped the development of agriculture.
Chapter traces farming origins in identified centers, focusing on Southwest Asia due to available archaeological information. The extensive research in this region provides a detailed picture of the transition to agriculture.
Southwest Asia: A Detailed Look
Southwest Asia, also known as the Near East, is studied to understand changes during the transition to agriculture. The region's rich archaeological record provides valuable insights into the processes of domestication and the development of early agricultural societies.
The term Southwest Asia is preferred over the Middle East due to its Eurocentric perspective.
The chapter examines 'Ain Mallaha (pre-agriculture) and Neolithic communities (Abu Hureyra, Jericho) to understand changes, and Catalhöyük for the consequences of the Neolithic revolution. These sites provide a detailed picture of the social, economic, and technological changes that accompanied the transition to agriculture.
New evidence from Southwest Asia and Mehrgarh (South Asia), Ban-po-ts'un (East Asia), Khok Phanom Di (Southeast Asia), Guila Naquitz (Mesoamerica), Tehuacan Valley (Mesoamerica), and Guitarrero Cave (South America) provides insights into early plant domestication. The comparison of evidence from these different regions helps to identify common patterns and unique adaptations in the development of agriculture.
The summary section considers agriculture's spread from primary centers and its impact on economies, social organization, settlement, and ideology. The spread of agriculture led to profound changes in human societies, including increased population densities, the development of complex social hierarchies, and new forms of religious and symbolic expression.
The Neolithic dramatically affected both farming and hunter-gatherer societies. The transition to agriculture was not a uniform process, and its impact varied depending on local environmental conditions and cultural practices.
Explaining the Origins of Agriculture
Independent domestication in multiple areas between 10,000 and 5000 years ago is significant. This suggests that agriculture was not a single invention but rather a response to similar environmental and social pressures in different parts of the world.
This transition requires explanation due to the long human prehistory. The fact that humans lived as hunter-gatherers for hundreds of thousands of years before the development of agriculture raises the question of why this transition occurred when it did.
Ideas about agriculture origins are revised and updated with early theories considered first. The study of the origins of agriculture is an ongoing process, with new evidence and theoretical perspectives constantly emerging.
Theories include the oasis hypothesis, natural habitat hypothesis, population pressure hypothesis, edge hypothesis, and social hypothesis. These different theories highlight the complex interplay of environmental, demographic, and social factors that may have contributed to the development of agriculture.
Theories reveal aspects of archaeology and archaeologists, with focus often on Southwest Asia's earliest evidence.
Early Theories and Climate Change
Early 20th-century theories focused on riverine areas/oases in North Africa/Southwest Asia. These theories emphasized the importance of water availability for early agriculture.
The end of the Pleistocene was thought to be increasingly warm and dry.
The oasis hypothesis (V. Gordon Childe) suggests plants, animals, and humans clustered near water sources, leading to domestication for survival. While this theory has been largely discredited, it highlights the importance of water availability for early agriculture.
Recent climate data from Greenland glaciers show a 33% increase in atmospheric carbon dioxide at the end of the Pleistocene (Sage, 1995), potentially fostering temperate species like grasses. This suggests that climate change may have played a role in creating conditions favorable for the development of agriculture.
Reconsideration and Alternative Hypotheses
New evidence in the 1940s/1950s indicated no major climate changes in Southwest Asia. This led to a reassessment of the role of climate change in the origins of agriculture.
Robert Braidwood's natural habitat hypothesis proposed earliest domesticates should appear where wild ancestors lived. This theory emphasizes the importance of understanding the ecological context in which domestication occurred.
Excavations at Jarmo (northern Iraq) supported domestication beginning in the natural habitat. This site provided evidence that early domesticates were found in the same areas as their wild ancestors.
Braidwood suggested technology and culture were ready by the end of the Pleistocene, making farming a desirable invention. This theory highlights the importance of human agency and technological innovation in the development of agriculture.
Binford challenged this in the 1960s with the population pressure hypothesis, arguing farming was labor-intensive and a last resort. This theory suggests that agriculture arose as a response to increasing population densities and food scarcity.
Population pressure upset the people-food equilibrium, leading to domestication for higher food yields per acre.
The edge hypothesis suggests the effects of population pressure would be felt most strongly at the margins of the natural habitat zone. This theory proposes that agriculture arose in areas where resources were scarce and population densities were high.
Social and Alternative Hypotheses
Mark Cohen argued for an inherent tendency for human population growth, leading to the use of less desirable resources. This theory suggests that agriculture was a consequence of the inherent tendency for human populations to grow beyond the carrying capacity of their environment.
Domestication was a solution to overpopulation on a global scale.
Social hypotheses (Barbara Bender, Brian Hayden) suggest food production success lies in individuals accumulating surplus and transforming it into valued items, leading to social inequality. These theories emphasize the role of social and political factors in the development of agriculture.
Carl Sauer suggested agriculture began in the hilly tropics of Southeast Asia, where sedentary groups with forest plant knowledge domesticated plants for poisons and fibers. This theory highlights the importance of understanding the diverse environmental and cultural contexts in which agriculture arose.
David Rindos argued domestication was an interaction between humans and plants, evolving into a symbiotic relationship. This theory emphasizes the co-evolutionary relationship between humans and domesticated species.
Jacques Cauvin argued the "Neolithic revolution" was more cultural than economic, involving new religious practices and symbolic behavior. This theory suggests that the development of agriculture was accompanied by profound changes in human beliefs and values.
Problems and Contradictions
Evidence from Southwest Asia shows earliest villages were located at the margins of the natural habitat, but human populations were not particularly large before agriculture. This contradicts the population pressure hypothesis.
Climatic evidence indicates cooler, moister temperatures in Southwest Asia at the end of the Pleistocene, expanding the geographic range of wild wheats/barley. This contradicts the oasis hypothesis.
Some theories may seem reasonable in one primary domestication centre (Southwest Asia)
In Southwest Asia, permanent settlements existed before domesticated plants or animals, followed by cultivated plants, herding animals, and pottery usage. In Mesoamerica, domesticated plants appeared first, followed by pottery and permanent villages. Differences indicate sedentism and cultivation are not totally dependent on each other, and domesticated animals are not always part of the equation.
In Mesoamerica, domesticated plants appeared first, followed by pottery and permanent villages.
Differences indicate sedentism and cultivation are not totally dependent on each other, and domesticated animals are not always part of the equation.
Difficulties in excavating phenomena as social relations and population pressure make many current theories hard to evaluate. The intangible nature of these factors makes it difficult to test theories about their role in the development of agriculture.
There is no single accepted general theory for the origins of agriculture or a common pattern of development, so more research is needed. The origins of agriculture remain a complex and contested topic, with no single explanation able to account for the diversity of evidence.
'Ain Mallaha: A Pre-Neolithic Settlement
Located beside a natural spring overlooking Lake Huleh in Israel, dating to 11,000-9000 B.C. This location provided a reliable source of water and a rich environment for hunting and gathering.
One of the earliest villages in the world, covering 2000 m^2 with a population of 200-300 people. The size and density of this settlement suggest a relatively sedentary lifestyle and a complex social organization.
Excavations revealed three layers of permanent villages with round houses (3-8 m diameter). The presence of multiple layers indicates continuous occupation over a long period of time.
Houses had stone foundations, wooden center posts, and stone-lined hearths/bins. These features suggest a degree of investment in жилищ construction and a focus on domestic activities.
Ground stone artifacts (plates, bowls, mortars, pestles) indicate a need for containers, with some decorated with geometric designs. These artifacts suggest the processing of plant foods and the development of artistic expression.
Flaked stone industry rich (50,000+ pieces), with bone tools including awls, skewers, needles, and fishhooks. The abundance of these tools indicates a sophisticated technology for hunting, gathering, and processing resources.
Animal bones from wild pig, deer, wild goat/cattle/horse, and gazelle are found, with gazelle being the most common. This suggests that hunting was an important part of the subsistence strategy at 'Ain Mallaha.
Bird/fish/tortoise/shellfish remains indicate importance of the lake as a resource, evidenced by net-sinkers. The exploitation of aquatic resources provided a diverse and reliable source of food.
High tooth decay suggests quantity consumption of carbohydrates. This may be due to the consumption of wild cereals, which are high in carbohydrates.
Wild barley/almonds are found charred, and abundant sickle blades/plant-processing equipment suggest wild cereals were important. This provides evidence that the inhabitants of 'Ain Mallaha were exploiting wild cereals, which may have paved the way for the development of agriculture.
Burials include individual interments/collective burials in pits, often with red ochre and limestone slabs, but generally rare grave goods. These burial practices suggest a complex system of beliefs about death and the afterlife.
Wheat, Barley, Pigs, Goats, and Sheep in Southwest Asia
Southwest Asia is a crucial region for early domestication, with its cultural significance and well-known archaeology. The region's rich archaeological record provides valuable insights into the processes of domestication and the development of early agricultural societies.
The Fertile Crescent, formed by the Zagros Mountains, Taurus Mountains, and the highlands of the Levant, is an area of abundant plant growth, making this mountainous arc a natural habitat of many plants and animals at the end of the Pleistocene. The Fertile Crescent's unique geography and climate provided a favorable environment for the development of agriculture.
The Fertile Crescent spans the Levant to the Zagros Mountains and is the natural habitat for the wild ancestors of wheat, barley, legumes, sheep, goats, pigs, and cattle. The presence of these wild ancestors in the Fertile Crescent made it a prime location for the development of agriculture.
Climatic conditions played an important role. Approximately 20,000 years ago, temperatures were cooler, which led to a broad-spectrum diet. Around 18,000 B.C., temperature increases led to forest expansion, which enhanced the quantity of the species. By 8000 B.C., rising temperatures evaporated water, reducing the forests. These climatic changes may have influenced the availability of resources and the development of agriculture.
Between 9000 and 8000 B.C., cereal size, shape, and structure led to domestication, which marked the shift from hunter-gatherer towards Neolithic characteristics. The selection for desirable traits in cereals led to the development of domesticated varieties that were more productive and easier to harvest.
Domesticated rye was dated to 10,000 B.C. at Abu Hureyra in Syria during the Neolithic period with plant remains. This provides evidence for the early domestication of rye in Southwest Asia.
Plants were cultivated for the first time and evidence of that can be seen at Jericho and Abu Hureyra. These sites provide some of the earliest evidence for the cultivation of plants in Southwest Asia.
Located in eastern Turkey, Hallam Cemi (9000 B.C.) contained a location for feasting and the food remains contained many different types of foods at the site. This suggests that feasting and social gatherings may have played a role in the development of agriculture.
Pigs were selected and controlled to eat, supporting the controlled herded hypothesis. This provides evidence for the early domestication of pigs in Southwest Asia.
Around. 7500 B.C., sheep, goats, architecture, and pottery made an appearance in the Levant, with pottery used as waterproof containers. The appearance of these new technologies and domesticates marks an important stage in the development of Neolithic societies.
The Neolithic package included completed domesticates, village architecture, and pottery, which spread to Europe and Africa before 7000 B.C. The spread of the Neolithic package led to profound changes in human societies across Europe and Africa.
New Evidence and the Pre-Pottery Neolithic (PPN)
Natufian period (12,500 to 9500 B.C.) showed sedentary settlements as gazelle-based hunter-gatherers with ritual behaviour. The Natufian period represents a transitional phase between hunter-gatherer and agricultural societies.
Large-scale architecture appeared with 6m thick towers, which were perhaps for harvesting grain. This suggests a growing emphasis on communal activities and the management of resources.
Start of the Neolithic, the first 3000 years lacked a lot of pottery. The absence of pottery during the early Neolithic is a distinguishing feature of this period.
During the PPNA, communities became large economic nodes, and wild cereals became apparent. This suggests that communities were becoming more specialized in the production and exchange of goods.
During PPNB, sites dramatically grew two to three sizes larger. The growth in site size during the PPNB indicates a significant increase in population densities.
Mortuary practices rose with plaster floors at graves. This suggests a growing emphasis on ritual and symbolic behaviour.
Domesticated plants (wheat, barley, etc) showed up at excavation sites. The appearance of domesticated plants is a key indicator of the transition to agriculture.
Animals (sheep, goats) showed up on PPNB sites as well. The appearance of domesticated animals is another key indicator of the transition to agriculture.
Site called Wadi Faynan 16 showed uncovered public buildings between 9600 and 8000 B.C. The presence of public buildings suggests a more complex social organization.
Plants like pistachios, figs, and wild goats were cultivated.
Gobekli Tepe
Excavations have uncovered shrines with art from the same time as major changes were taking place. This suggests that religious and symbolic beliefs may have played a role in the transition to agriculture.
Domestication of planting and herding played a major role in the Neolithic Revolution.
Agriculture was required in large population groups.
Gobekli Tepe, Turkey, is an area constructed 11,000 years ago, containing stone walls along 10-30 m (35-100 ft) T-shaped limestone pillars. The construction of Gobekli Tepe required a significant investment of labor and resources, suggesting a complex social organization.
It contained no normal dwellings nor trash. This suggests that Gobekli Tepe was not a typical settlement but rather a ceremonial center.
This location was a center for cause and transformation.
Abu Hureyra: A Case Study
Abu Hureyra (Syria) submerged in 1974 due to dams behind the Euphrates River. The submersion of Abu Hureyra highlights the challenges of archaeological research in areas subject to environmental change.
Occupied 10,500 B.C. to 6000 B.C, through the Neolithic and Natufian periods.
Natufian settlement consisted of small, located near migration routes for gazelle herds. This suggests that the Natufian inhabitants of Abu Hureyra were highly mobile and adapted to the seasonal movements of gazelles.
Hunter-gatherers consumed wild plants and wild wheat as their food source.
Around 10,000 B.C., the climate became more arid. This climatic change may have influenced the availability of resources and the development of agriculture.
Plant husbandry was used before domestication was apparent. This suggests that the inhabitants of Abu Hureyra were experimenting with plant management techniques before the full-scale domestication of crops.
Domesticated plant (rye, lentils) showed up after disappearance of wild stands. This suggests that the domestication of crops may have been a response to the decline of wild resources.
Experiments showed plant domestication could occur in as little as 300 years. This demonstrates the relatively rapid pace at which plant domestication can occur under favorable conditions.
By 8500 B.C., the range of domesticated plants included rye, lentils, and domesticated wheats.
Rivers consisted of a food source at this location.
Sheep/goats were herded with domesticated plant/animal diets.
About 10% of animals were in the faunal assemblage.
Village became the day today (2000–3000 inhabitants).
Housed became rectangle with washed walls.
The settlement became abandoned close to 6000 B.C. causing an environment that reduced agricultural productivity so herding became a viable enterprise.
Archaeobotany: Studying Prehistoric Plant Remains
Archaeobotany = study of plant remains from archaeological remains. Archaeobotany provides valuable information about the types of plants that were used by prehistoric peoples, as well as their methods of cultivation and processing.
Plant remains need to be carbonized in some cases to get burned or oxidation.
By doing Flotation with sediments and putting it in a container with water then, the charred plant remains rise to the surface and are collected. Flotation is a common technique used by archaeobotanists to recover plant remains from archaeological sites.
Issues are from the domestication as well as medicine uses.
It also involves the use of plants in archaeological sites.
Einkorn, Rye, Barley, and oats were cultivated during this area.
Experiments show how much food of what was available from Jack Harlan to see amount of food available, including harvesting when the wheat was right
Domesticated can not be distinguished from others without plant parts or grain impressions.
Gordon Hillman said harvesting doesn't have a major impact but selective harvesting needs specific things and morphology change.
Loss of seeding ability leads to preferred characteristics.
Jericho: A Continuously Inhabited Site
Jericho, occupied since 10,000 B.C., features Elisha's Fountain, an oasis in the arid Jordan Valley that facilitated constant human settlement. Jericho's location near a reliable water source made it an attractive location for human settlement over thousands of years.
Dame Kathleen Kenyon exposed remains containing objects from the Bronze Age all the way to the Mesolilthic period. Kenyon's excavations at Jericho revealed a long and complex history of human occupation.
Early Neolithic (8500-7600 B.C.) residential structures were excavated by narrow trenches, along with other items that were similar to those found in other excavation sites.
At Jericho, the Gazelle bone was in big supply while Aurochs boars, and foxes had eaten.
Trade items include Turquoise Cowire stones and obsidian. The presence of trade items at Jericho indicates that it was part of a network of exchange with other communities.
By 27 ft., it can exposed a large stone tower dating to the eight millennium B.C