Displaying 1 - 15 of 29 records found.
| Title | Type |
|---|---|
The Tsembaga Maring swidden agriculture and animal husbandry, Simbai River Valley, Papua New Guinea | Case |
| Tsembaga Maring are a group of horticulturists who live in the highlands of New Guinea. The main resource upon which they relied on is swidden agriculture. The Tsembaga also practiced animal husbandry - the main domesticated animal being pigs. The Tsembaga derived little energetic value from pigs. Pigs did, however, play an important role in Kaiko, an important cultural ritual practiced by the Tsembaga people. Kaiko is a 5-25 year long ritual cycle that is coupled with pig husbandry and... | 09 Aug 2016 |
The Hohokam Cultural Sequence (Irrigation and Foraging), Sonoran Desert, greater Phoenix basin, Arizona, USA | Case |
| The Hohokam is a Native American cilivilization that emerged and occupied the present day Phoenix Basin area and its outer bounds for a thousand years. The archeological records indicate that the Hohokam society evolved into a complex irrigation society and reached its peak in levels of population, social institutions, and irrigation infrastructure by the 11th century.Perplexingly though, the Hohokam society subsequently declined and collapsed by the mid 14th century. As they declined, the... | 09 Aug 2016 |
Agave Cultivation in the Arid Pre-Hispanic, Villanueva Municipality, state of Zacatecas, northern Mexico | Case |
| Agave is a perennial plant that can be used for multiple purposes: as edible materials for yielding caloric values and as fiber materials for producing items like clothing, ropes, and baskets. Historical records indicate that the cultivation of agave was a common practice in pre-Hispanic Northern Mexico and the American Southwest. It is generally accepted among archeologists that the agave cultivation was linked to the strategy of ensuring food supply when maize cropping failed from droughts.... | 09 Aug 2016 |
Robustness and Resilience across Scales: Migration and Resource Degradation in the Prehistoric U.S. Southwest | Case |
| Migration is arguably one of the most important processes that link ecological and social systems across scales. Humans (and other organisms) tend to move in pursuit of better resources (both social and environmental). Such mobility may serve as a coping mechanism for short-term local-scale dilemmas and as a means of distributing organisms in relation to resources. Movement also may be viewed as a shift to a larger scale; that is, while it may solve short-term local problems, it may... | 09 Aug 2016 |
The Evolution of Social Norms in Common Property Resource Use | Case |
| The problem of extracting commonly owned renewable resources is examined within an evolutionary-game-theoretic framework. It is shown that cooperative behavior guided by norms of restraint and punishment may be stable in a well-defined sense against invasion by narrowly self-interested behavior. The resource-stock dynamics are integrated with the evolutionary-game dynamics. Effects of changes in prices, technology, and social cohesion on extraction behavior and the long-run stock are analyzed.... | 09 Aug 2016 |
Paradox of marine protected areas: suppression of fishing may cause species loss | Case |
| This is a placeholder case for the model for the same name. Please revise case information to reflect the case study represented in the model. | 09 Aug 2016 |
Regime shifts in a socio-ecological model of farmland abandonment | Case |
| Figueiredo & Pereira (2011) developed a mathematical model with two-way linked socio-ecological dynamics to study farmland abandonment and to understand the regimes shifts of this socio-ecological system. The model considers that migration is a collective behavior socio-economically driven and that the ecosystem is dynamic. The model identifies equilibria that vary from mass migration, farmland abandonment, and forest regeneration, to no migration and forest eradication; partial migration... | 09 Aug 2016 |
The coupled dynamics of human socio-economic choice and lake water system: the interaction of two sources of nonlinearity | Case |
| Suzuki & Iwasa (2009) study a mathematical model for the coupled dynamics of human socio-economic choice and lake water system. In the model, many players choose one of the two options: a cooperative and costly option with low phosphorus discharge, and an economical option with high phosphorus discharge. The choice is affected by an economic cost, a social concern about water pollution, and a conformist tendency. The pollution level in the lake is determined by total phosphorus discharge by... | 09 Aug 2016 |
Conflict between groups of players in coupled socio-economic and ecological dynamics | Case |
| Conflict among multiple groups is a major source of difficulty in environmental conservation. People are often divided into various groups that have different social factors, sometimes leading to differences in the degree to which they cooperate in environmental conservation. This obstructs the social consensus needed to solve the environmental problems. Here we study the coupled dynamics of human socio-economic choice and lake water pollution, and examine the magnitude of the difference in... | 09 Aug 2016 |
Tourists and traditional divers in a common fishing ground | Case |
| Lee & Iwasa (2011) study socio-ecological models for a fishing ground open to tourists. On Jeju Island, Korea, women traditional divers called “Haenyeo” harvest resources in a common fishing ground. To investigate the impact of introducing tourists on the benefit to the fishing association and the resource level, we examine two models that differ in the way the number of tourists is controlled. In the first model, the fishing association charges an entrance fee to tourists and the level of... | 09 Aug 2016 |
Subtle global bifurcation with dramatic ecological consequences in a simple population model | Case |
| Numerous situations exist in which a consumer uses two different kinds of resources, one fixed, the other renewable, e.g., nesting resources and food resources. With an elementary modification of the basic Lotka–Volterra consumer resource equations, we investigate the population dynamics of a consumer dependent on two resources, one fixed, the other renewable. Emerging from this structure is a situation of alternative attractors that remain qualitatively robust over a significant range of... | 09 Aug 2016 |
The inevitability of surprise in agroecosystems | Case |
| Many critical transformations of ecosystems contain advanced signals of their imminence, but it is also true that many critical transformations can be shown to contain no such signal, at least with the sorts of data normally available to field workers. This paper explores some generalized theoretical structures and distinguishes between those that may provide a signal that could be used to predict a critical transformation and those that, by their very nature, do not provide such a clue. I... | 09 Aug 2016 |
Lorenz Model | Model |
| This simple model was developed by Edward Lorenz in 1963 to study fluid mechanics (based on Navier-Stokes equations). It is the first ever model of a chaotic dynamical system. Chaos arises when a deterministic, nonlinear dynamical system exhibits long-term unpredictability in behavior due to sensitivity to initial conditions.The model is a three-dimentional system of differential equations. Specifically, the model describes the convection motion of a fluid in a small idealized "Rayleigh-... | 09 Aug 2016 |
Robustness, institutions, and large-scale change in social-ecological systems: the Hohokam of the Phoenix Basin | Model |
| This is a model that illustrates the relationship among levels of (1) population, (2) human-made capital, (3) natural capital , and (4) resource consumption. The key insight to be gained from the model is that as the ratio of capitalization in human-made infrastructure over human population is varied in the parameter space, the dynamics of natural capital changes and becomes vulnerable to different disturbance regimes. That is, as humans grow in population and over-invest in capitalization/... | 09 Aug 2016 |
Culture and Human Agro-ecosystem Dynamics: the Tsembaga of New Guinea | Model |
| The model of Tsembaga agro-ecology explores the coupled dynamics involving population growth, renewable resource base, resource consumption by humans, and the self-regulating effect of cultural ritual. The model demonstrates that the cultural ritual of Tsembaga (Kaiko) can stabilize the Tsembaga population and its resource level. This is achieved by attenuating wildly fluctuating limit cycles of population and resource levels down to desirable small-amplitude cycles. Anderies (1998) describes... | 09 Aug 2016 |
