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Questions and Answers
Why are farming and herding significant topics for behavioral ecologists?
Why are farming and herding significant topics for behavioral ecologists?
They contribute to human survival and reproduction, which are components of Darwinian fitness.
In what ways do harvesting plant and animal resources result in microevolutionary changes in human predators?
In what ways do harvesting plant and animal resources result in microevolutionary changes in human predators?
Populations evolve the capacity to metabolize high-carbohydrate diets and dairy products, and increased resistance to zoonotic diseases.
What are the shared concepts between microeconomics and animal behavior studies that influence HBE?
What are the shared concepts between microeconomics and animal behavior studies that influence HBE?
Return rates, efficiency, diminishing marginal returns, diminishing marginal value, opportunity cost, indifference, and preference.
What are the five key issues that are unavoidable when studying farming and herding economies according to the text?
What are the five key issues that are unavoidable when studying farming and herding economies according to the text?
How do Kofyar farmers actively build and maintain soil fertility, given the challenges of their environment?
How do Kofyar farmers actively build and maintain soil fertility, given the challenges of their environment?
Explain how the Kofyar use a planting strategy called polyculture.
Explain how the Kofyar use a planting strategy called polyculture.
How do Turkana herders manage the challenge of feeding their families daily without slaughtering their livestock too frequently?
How do Turkana herders manage the challenge of feeding their families daily without slaughtering their livestock too frequently?
What are stock associations and how do they help the Turkana cope with environmental risks?
What are stock associations and how do they help the Turkana cope with environmental risks?
Describe the diversified subsistence pattern practiced by the Mikea of Southwestern Madagascar.
Describe the diversified subsistence pattern practiced by the Mikea of Southwestern Madagascar.
How do Mikea farmers make decisions about planting maize and manioc?
How do Mikea farmers make decisions about planting maize and manioc?
Explain the trade-off Kofyar farmers face when deciding whether to plant acha or sorghum.
Explain the trade-off Kofyar farmers face when deciding whether to plant acha or sorghum.
How do Kofyar, Mikea and Turkana follow Markowitz's guidance in their agropastoral portfolios?
How do Kofyar, Mikea and Turkana follow Markowitz's guidance in their agropastoral portfolios?
Describe how highland Kofyar agriculture is land-intensive.
Describe how highland Kofyar agriculture is land-intensive.
How do the Mikea use markets?
How do the Mikea use markets?
What is the key challenge for mobile hunter-gatherers and what is the social solution to this challenge?
What is the key challenge for mobile hunter-gatherers and what is the social solution to this challenge?
What is one common social solution for the environmental challenges that farmers have regarding access to land and labor?
What is one common social solution for the environmental challenges that farmers have regarding access to land and labor?
How does the text define the key environmental challenges for pastoralists?
How does the text define the key environmental challenges for pastoralists?
What is the fourth way (of at least four ways) to make dissimilar values (like energy, money, land, time, probability, etc.) comparable?
What is the fourth way (of at least four ways) to make dissimilar values (like energy, money, land, time, probability, etc.) comparable?
Who argued that societies change their tools and social institutions to cope with ecological challenges?
Who argued that societies change their tools and social institutions to cope with ecological challenges?
""Evolution is competitive" is the phrase that begins Kaplan and Hill's (1992) chapter on the evolutionary ecology of food acquisition." According to the text, what type of evidence do evolutionary anthropologists see abundant evidence for?
""Evolution is competitive" is the phrase that begins Kaplan and Hill's (1992) chapter on the evolutionary ecology of food acquisition." According to the text, what type of evidence do evolutionary anthropologists see abundant evidence for?
In Mazur's (1987) hyperbolic discounting function ($V_D = A/(1+kD)$), what does variable $k$ indicate?
In Mazur's (1987) hyperbolic discounting function ($V_D = A/(1+kD)$), what does variable $k$ indicate?
How did Bowles (2011) adjust his calculations to calculate grain productivity per unit labor?
How did Bowles (2011) adjust his calculations to calculate grain productivity per unit labor?
In the z-score model of risk , what does $R_{min}$ stand for?
In the z-score model of risk , what does $R_{min}$ stand for?
How do behavioral ecologists often use the z-score model of risk?
How do behavioral ecologists often use the z-score model of risk?
How Did Goland's (1993a, 1993b) study of field scattering reduce variance in potato production?
How Did Goland's (1993a, 1993b) study of field scattering reduce variance in potato production?
What does the adage that “'money does not grow on trees'” imply about food production?
What does the adage that “'money does not grow on trees'” imply about food production?
What two foundations sponsored a series of international development projects dubbed 'the Green Revolution'?
What two foundations sponsored a series of international development projects dubbed 'the Green Revolution'?
What is the shadow price?
What is the shadow price?
What properties of institutions facilitate successful local resource governance?
What properties of institutions facilitate successful local resource governance?
What does the integration of rules for how cultural evolution and adaptation occur, with attention to the content of cultural information and the meaning that people derive from it involve?
What does the integration of rules for how cultural evolution and adaptation occur, with attention to the content of cultural information and the meaning that people derive from it involve?
Flashcards
Farming & Herding
Farming & Herding
Symbiotic relationships between humans and plant/animal prey.
Human Adaptation to Farming
Human Adaptation to Farming
Ability to digest high-carbohydrate diets and dairy, increased resistance to zoonotic diseases.
Food Production
Food Production
Requires thought, choice, and is tied to resource conflicts, sociality, labor division and inequality.
Kofyar Farmers
Kofyar Farmers
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Waffle ridges
Waffle ridges
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Polyculture
Polyculture
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Kofyar crop diversity
Kofyar crop diversity
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Kofyar Land Tenure
Kofyar Land Tenure
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Turkana People
Turkana People
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Livestock as Savings
Livestock as Savings
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Secondary Products
Secondary Products
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Herd scattering strategy
Herd scattering strategy
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Mikea Economy
Mikea Economy
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Farming Time Decisions
Farming Time Decisions
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Risk (in human ecology)
Risk (in human ecology)
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Intensification
Intensification
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Markets
Markets
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Institutions
Institutions
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Land and Livestock Ownership
Land and Livestock Ownership
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Avoiding Coordination problems
Avoiding Coordination problems
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Future Discounting
Future Discounting
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Foraging to Farming
Foraging to Farming
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Discount Factor
Discount Factor
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Measure of Risk
Measure of Risk
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z-Score
z-Score
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How to Reduce Risks
How to Reduce Risks
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Field Scattering
Field Scattering
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Optimal Investment
Optimal Investment
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Agricultural Transition
Agricultural Transition
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Transaction costs
Transaction costs
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Study Notes
Introduction to Modes of Production
- This chapter studies farming, herding, and diversified economies through human behavioral ecology (HBE)
- HBE considers farming and herding significant due to their impact on human survival and reproduction
- Farming/herding and foraging share trade-offs regarding time, energy, and opportunity cost
- Farming and herding are components of the human adaptive phenotype.
- Throughout the Holocene, societies adapted by varying their reliance on wild and domesticated foods
- Farming/herding are linked to environment, ecology, evolution, cognition, economy, politics, and culture
- Farming/herding are symbiotic between humans and plant/animal prey
- Harvesting resources causes microevolutionary changes in prey and predators
- This includes diet adaptation, and increased disease resistance
Evolution through Food Production
- Food production has economic dimensions, creating goods for consumption, exchange, and investment.
- Food production has cognitive facets, needing thought and choice.
- Food production is political because of the resource conflicts that involve land, labor, crops, and livestock
- Farming/herding is significant in the evolution of sociality, cooperation, division of labor, and inequality
- HBE research is less developed for farming/herding compared to hunting and gathering studies
- HBE has borrowed questions/models from behavioral ecology
- Behavioral ecology borrowed terms from microeconomics
- Shared concepts include return rates, efficiency, diminishing marginal returns/value, opportunity cost, indifference, and preference
Core Issues in Farming and Herding Studies
- The chapter emphasizes five issues unavoidable when studying farming and herding: time, risk, inputs and intensification, markets, and institutions
- The chapter starts with three ethnographic case studies: Kofyar farmers of Nigeria, Turkana herders of Kenya, and Mikea forager-farmer-herders of Madagascar
- The chapter explores three theoretical starting points: foraging theory, agricultural household economics, and cultural ecology
- Commensurability, or how to compare dissimilar forms of value, are discussed
- The chapter will address future directions that involve niche construction, embodied capital, cooperation/competition, culture, and applied evolutionary anthropology
Kofyar Farmers of Nigeria
- Kofyar farmers are located on the Jos Plateau of central Nigeria
- The Jos Plateau consists of steep-sloped hills rising above the Benue floodplain
- The Kofyar are land-intensive farmers invest much labor for high productivity per land unit
- Soil is rocky and prone to erosion, so Kofyar develop the soil and landscape
Soil Cultivation Techniques
- Kofyar mulch plant matter with manure in goat pens and transport fertilizer to fields
- They sculpt the land into cross-cutting waffle ridges to trap rainwater
- Kofyar grow maize, millet, sorghum, acha, yam, Hausa potatoes, sweet potatoes, cowpeas, peanuts, pumpkins, palms, and fruits
- The Kofyar use polyculture strategies and grow species together
- Crops have different properties, leading to different trade-offs
Crop Harvesting
- Grains are domesticated grasses with distinct and predictable seasons
- Seeds germinate after planting, producing grain, and then the plant dies
Time Portfolio
- Kofyar plant a mix of grains that have varying harvesting times
- Acha and millet provide seed after 2 and 4 months respectively.
- Sorghum requires 8 months but is less vulnerable to insufficient, early rainfall
- Unlike grains, roots and tubers lack predetermined harvesting seasons
- The farmer must choose timing, balancing immediate need with tuber size and risk
- Tubers can become increasingly toxic or woody with age.
- Legumes like grains, have a distinct season, providing protein and fat, and replacing soil nitrogen
Land Tenure on Jos Plateau
- Limited land leads to shared understanding of land tenure
- Land is clan property; in practice, farmers operate as if it is private property
- Cash crop markets in the 1950s encouraged clearing land in the plains
- These migrant, lowland farmers faced labor shortages, not land shortage
Extensive Farming
- These farmers then began doing extensive farming, also known as horticulture
- Extensive farmers put very little labor toward improving unit land production
Turkana Herders of Kenya
- Turkana people of northern Kenya live in the semiarid plain between Uganda and Lake Turkana
- Plant matter is inedible to humans, so humans live by herding
- Turkana use domesticated camels, cattle, sheep, goats, and donkeys to transform resources to nutrition
Herding Considerations
- Camels, cattle, sheep, goats, and donkeys have advantages and disadvantages
- Cattle, donkeys, and sheep graze grass, while camels and goats browse tree leaves and bark
- Camels are large, expensive, slow to reproduce, produce a lot of milk, and are drought-tolerant
- Cattle are very prone to drought but provide milk.
- Sheep and goats ("smallstock") are smaller, cheaper, quick breeders with less milk and drought-prone
Turkana Diet and Livestock
- Turkana face the challenge of daily family feeding
- It’s cost prohibitive to slaughter animals weekly
- Turkana are reluctant to slaughter animals
- Livestock are walking banks with stored value accruing interest as animals reproduce
- Individual animals have differing interest rates
- Milk and blood, called secondary products, are one way to feed families
- Turkana bleed camels and cattle with minimal impact
- They eat animal blood raw, mixed with milk, or cooked
- Ngisonyoka Turkana acquire 90% of calories from milk during wet season
- Other ways that Turkana meet daily food needs are purchased foods, hunting, gathering, and stealing livestock
Turkana Livestock
- Because livestock are walking property, it is significant for Turkana to know ownership
- Turkana livestock tenure is complex
- Adult married men (sometimes widowed women) manage animal care, allocation, distribution, slaughter and sales
- Livestock is branded marking property of the man’s patrilineage, reminding men to be ready for aid
- Milking stock is allocated to wives for daily food needs
- Turkana share animals across Social networks that is called stock associations
- Herds may reduce risks from drought/raid, since losses will not affect all animals
Mikea of Southwestern Madagascar
- Mikea live in the dry forests of Madagascar's semiarid southwest
- Despite calling themselves hunter-gatherers, Mikea have often practiced diversified subsistence
- The Mikea forage for wild ovy tubers, honey, and small game.
- Mikea also cultivate maize, manioc, sweet potatoes, and irrigated wet rice; herd zebu cattle/goats, poultry
- They also do wage labor and market exchange
- Each household has unique portfolios of foraging, farming, herding, and marketing
Mikea Foraging Numbers
- Wild ovy tubers, adults average 2043 kcal/h and children average 844 kcal/h
- Unlike other foragers, Mikea have almost no large game to hunt
- Mikea spend almost as many calories getting small prey as gaining
- Tambotrike tenrecs average −69 kcal/h acquisition rate
- These game sell for higher price and profits are used to purchase cheaper food
Mikea Cultivation
- Farmers do little to improve crop yield
- They plant both maize and manioc: maize for heavy rain, manioc for light rain
- Maize must be harvested after 3 months and Manioc can grow a long time
- Mikea use livestock as wealth, milk, and traction, as well as ancestor sacrifices
- Livestock and land were owned by clans, but were later transformed into private property ownership
- Mikea sell wild and domesticated foods and do mobile retailing
- Mikea have sold goods for export, like wild silk in the 1920s, and cash-cropped maize and marine products more recently
Trade-offs in Farming and Herding
- Farming and herding are an overview of trade-offs that relate to time, risk, input/intensification, market, and institutions
- Farming and herding decisions are intertemporal or over time
- Kofyar must decide fast but low-yielding acha or slow but drought-hardy sorghum
- Kofyar and Mikea must decide how long root crops mature, trading waiting verses greater size
- Turkana must choose large/slow camels or fast/small goats and sheep
Risk Management
- Risk: the probability of shortfall or loss (Stephens 1990:24; Winterhalder et al. 1999:302).
- Variability in rainfall, wind, temperature, pests, and disease may lead to lose crops.
- Markowitz suggested portfolios of uncorrelated returns to reduce risk
- Kofyar, Mikea, and Turkana follow this practice when combining millet/cattle with drought-hardy plants
- Kofyar also improve through intensifying agriculture and reduces variability
- Turkana move herds and share through stock associations, to improve risk
Investment of Input
- Inputs are labor, land, cash, tech, etc. to enhance yield
- Intensification occurs during an increase in investment for increase productivity
- Mikea are extensive because they use few techniques
- Highland Kofyar are land-intensive: improving land by fertilizing, ridging, terracing, and polyculture with labor
- Intensification can also occur during foraging/herding
- Mikea tuber foraging is extensive; Turkana is herding contrasting factory model
Market Dynamics
- Markets bring exchanges for material gain through marketplaces
- Markets transform production value
- Mikea transform small game (low calories) into cash for cheaper foods
- Mikea profit through regional supply/demand
- With markets, farmers can potentially sell staples for revenue to buy goods
Institutions for Society
- Institutions organize rights to laborers, land, livestock, tools and foods
- These are collective norms and practices that solve collective actions
- Kofyar, Turkana, and Mikea own land and livestock through clans.
- Other institutions may include gendered rights and supernatural elements
- By following accepted rules, coordination problems avoid property tragedies
Foraging Theory as an Anchor
- Foraging theory is an optimal model building that tests human decisions
- Foraging-theory assumes that the choice to make a “good” decision to forage has reproductive benefit
- Frequency of the best decision should, overtime, have selection via the environment
- This could predict that human behavior relates to fitness in some useful way
- When the models do not predict behavior, that there are alternate goals such as time-minimization
Agricultural Economics as an Anchor
- Neoclassical economics has similar assumptions that value what generates decisions
- But economists believe that that people tend to generally maximize utility
- Utility includes things such as the level of satisfaction among different values
- For most goods, there is less value as an increase in consumption
Analyzing People Based on Choices
- Utlity is an easy concept as it avoids assumptions
- It assumes what someone wants has to do with maximizing what they want
Social Ecology as an Anchor
- Steward that societies alter their tools to cope
- Although difficult to be generalized to a diverse group of people, helpful in finding shared conditions for similar ecological issues
Communal Challenges for HBE
- Challenges require that they incorporate time, risk, intensification, markets, and institutions that require comparisons
- Commensurability for human models has more to do with time and energy
- A man, farmer, or herder, is constrained by land, cash, or money and may need other types of resources
- An answer would result from data on what they would expect
Evaluating with Rewards
- An evaluation using rewards as gain, and a value for unit
- Unit should be the currency used and those that lack resource
- Foraging uses time over labor as the basis of comparison
Future Discounting
- Mazur's hyperbolic discounting function relates value through the following:
- VD= A/1+kD where VD is the value of reward, A is reward, and 'k' indicates discounted value over time
Shortcomings of Discounting Models
- Model predictions rely on selected values
- There may be variations among studies
- Hyperbolic discounting is based on intertemporal choice, not its explanation
Key Studies in Discounting
- Moving from farming to foraging becomes a choice between intertemporal rewards of domesticated animals
Time Discounting
- Time-discounting can help in why the the people did not dedicate in farming
- Agriculture became a part-time suppliment to hunting
- Factor 'k' at the time represents immediate food
- Higher values lead subjective returns
- The cycle reduces motivation
Risk Assessment
- Basic risk can measured from calculating the number of food events over many harvests
- It provides a way of understanding the competition in the area in that region
Behavioral Ecologists and Risk
- Scientists are able to use the “Z model” to compare risk
- Model evaluates risk as a way to have less to ensure a minimum
- Reduced variance can be expressed using a number system such as 'z' number on the deviates
Harvests and Variables that Interfere
- There may be variables that cause harm with variance
- An illustrative may include a farmer attempting to perform several cropping strategies
Exposure Units
- To reduce potential harm, farmers are to spread out their activities
- This also allows to have many baskets to avoid breaking each egg if things go wrong
Diversification
- Increasing production may intendify as well, but often it decreases change
- Increasing the average yields means you need to understand what affects variance as well
Key Studies In Farming
- Field scattering can reduces variance
- Diversifying fields leads to a reduction in exposure to certain risks
Mace and Houston Studies
- There may be an optimum composition relative to the overall wealth
- They also found that the amount relates to wealth
Optimal Investment
- Money should be placed on the trees
- To the get an apple there is a cost - so one has to reduce pest or look at fertilizers
Agricultural Economics
- There is a choice for what to feed a field based on crop response and rate
- Beyond a certain level you will not be able to gain as much or achieve what you set out to do
Optimal vs. Gross
- Important to note is that that investment by the farmer is small what what one has
- Farmers want a lot of more power
Models of intensification
- Those that invest gain more land
- Labor becomes efficient to the methods
- Farmers benefit based on scarcity
Development Projects
- Development projects encourage the people to seek maximum development from farmers
Use of Input
- For all uses, optimizing inputs are the proper way
- A lot of methods would maximize one self, but you must consider the potential for other things
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