Related Research Articles
Theoretical ecology is the scientific discipline devoted to the study of ecological systems using theoretical methods such as simple conceptual models, mathematical models, computational simulations, and advanced data analysis. Effective models improve understanding of the natural world by revealing how the dynamics of species populations are often based on fundamental biological conditions and processes. Further, the field aims to unify a diverse range of empirical observations by assuming that common, mechanistic processes generate observable phenomena across species and ecological environments. Based on biologically realistic assumptions, theoretical ecologists are able to uncover novel, non-intuitive insights about natural processes. Theoretical results are often verified by empirical and observational studies, revealing the power of theoretical methods in both predicting and understanding the noisy, diverse biological world.
A herbivore is an animal anatomically and physiologically adapted to eating plant material, for example foliage or marine algae, for the main component of its diet. As a result of their plant diet, herbivorous animals typically have mouthparts adapted to rasping or grinding. Horses and other herbivores have wide flat teeth that are adapted to grinding grass, tree bark, and other tough plant material.
In economics, industrial organization is a field that builds on the theory of the firm by examining the structure of firms and markets. Industrial organization adds real-world complications to the perfectly competitive model, complications such as transaction costs, limited information, and barriers to entry of new firms that may be associated with imperfect competition. It analyzes determinants of firm and market organization and behavior on a continuum between competition and monopoly, including from government actions.
Predation is a biological interaction where one organism, the predator, kills and eats another organism, its prey. It is one of a family of common feeding behaviours that includes parasitism and micropredation and parasitoidism. It is distinct from scavenging on dead prey, though many predators also scavenge; it overlaps with herbivory, as seed predators and destructive frugivores are predators.
A keystone species is a species which has a disproportionately large effect on its natural environment relative to its abundance, a concept introduced in 1969 by the zoologist Robert T. Paine. Keystone species play a critical role in maintaining the structure of an ecological community, affecting many other organisms in an ecosystem and helping to determine the types and numbers of various other species in the community. Without keystone species, the ecosystem would be dramatically different or cease to exist altogether. Some keystone species, such as the wolf, are also apex predators.
In the field of management, strategic management involves the formulation and implementation of the major goals and initiatives taken by an organization's managers on behalf of stakeholders, based on consideration of resources and an assessment of the internal and external environments in which the organization operates. Strategic management provides overall direction to an enterprise and involves specifying the organization's objectives, developing policies and plans to achieve those objectives, and then allocating resources to implement the plans. Academics and practicing managers have developed numerous models and frameworks to assist in strategic decision-making in the context of complex environments and competitive dynamics. Strategic management is not static in nature; the models can include a feedback loop to monitor execution and to inform the next round of planning.
The ecological model of competition is a reassessment of the nature of competition in the economy. Traditional economics models the economy on the principles of physics. This can be seen in the economics lexicon: terms like labour force, market equilibrium, capital flows, and price elasticity. This is probably due to historical coincidence. Classical Newtonian physics was the state of the art in science when Adam Smith was formulating the first principles of economics in the 18th century.
Michael Eugene Porter is an American academic known for his theories on economics, business strategy, and social causes. He is the Bishop William Lawrence University Professor at Harvard Business School, and was one of the founders of the consulting firm The Monitor Group and FSG, a social impact consultancy. He is credited for creating Porter's five forces analysis, which is instrumental in business strategy development at present. He is generally regarded as the father of the modern strategy field. He is also regarded as one of the world's most influential thinkers on management and competitiveness as well as one of the most influential business strategists. His work has been recognized by governments, non governmental organizations and universities.
Starting in the early 1990s, James F. Moore originated the strategic planning concept of a business ecosystem, now widely adopted in the high tech industry. The basic definition comes from Jim Moore's book, The Death of Competition: Leadership and Strategy in the Age of Business Ecosystems.
An apex predator, also known as a top predator, is a predator at the top of a food chain, without natural predators of its own.
Optimal foraging theory (OFT) is a behavioral ecology model that helps predict how an animal behaves when searching for food. Although obtaining food provides the animal with energy, searching for and capturing the food require both energy and time. To maximize fitness, an animal adopts a foraging strategy that provides the most benefit (energy) for the lowest cost, maximizing the net energy gained. OFT helps predict the best strategy that an animal can use to achieve this goal.
The following outline is provided as an overview of and topical guide to ecology:
Alexander William Lowndes de Waal, a British researcher on African elite politics, is the executive director of the World Peace Foundation at the Fletcher School of Law and Diplomacy at Tufts University. Previously, he was a fellow of the Harvard Humanitarian Initiative at Harvard University, as well as program director at the Social Science Research Council on AIDS in New York City.
An ecosystem model is an abstract, usually mathematical, representation of an ecological system, which is studied to better understand the real system.
In ecology, a community is a group or association of populations of two or more different species occupying the same geographical area at the same time, also known as a biocoenosis, biotic community, biological community, ecological community, or life assemblage. The term community has a variety of uses. In its simplest form it refers to groups of organisms in a specific place or time, for example, "the fish community of Lake Ontario before industrialization".
An ecological cascade effect is a series of secondary extinctions that are triggered by the primary extinction of a key species in an ecosystem. Secondary extinctions are likely to occur when the threatened species are: dependent on a few specific food sources, mutualistic, or forced to coexist with an invasive species that is introduced to the ecosystem. Species introductions to a foreign ecosystem can often devastate entire communities, and even entire ecosystems. These exotic species monopolize the ecosystem's resources, and since they have no natural predators to decrease their growth, they are able to increase indefinitely. Olsen et al. showed that exotic species have caused lake and estuary ecosystems to go through cascade effects due to loss of algae, crayfish, mollusks, fish, amphibians, and birds. However, the principal cause of cascade effects is the loss of top predators as the key species. As a result of this loss, a dramatic increase of prey species occurs. The prey is then able to overexploit its own food resources, until the population numbers decrease in abundance, which can lead to extinction. When the prey's food resources disappear, they starve and may go extinct as well. If the prey species is herbivorous, then their initial release and exploitation of the plants may result in a loss of plant biodiversity in the area. If other organisms in the ecosystem also depend upon these plants as food resources, then these species may go extinct as well. An example of the cascade effect caused by the loss of a top predator is apparent in tropical forests. When hunters cause local extinctions of top predators, the predators' prey's population numbers increase, causing an overexploitation of a food resource and a cascade effect of species loss. Recent studies have been performed on approaches to mitigate extinction cascades in food-web networks.
The mesopredator release hypothesis is an ecological theory used to describe the interrelated population dynamics between apex predators and mesopredators within an ecosystem, such that a collapsing population of the former results in dramatically increased populations of the latter. This hypothesis describes the phenomenon of trophic cascade in specific terrestrial communities.
Marco Iansiti is a professor at the Harvard Business School, whose primary research interest is technology and operations strategy and the management of innovation. He is the David Sarnoff Professor of Business Administration, heads the Technology and Operations Management Unit, and chairs the Digital Initiative. He is also the Chairman of the Board of Keystone Strategy, a consultancy focused on strategy, data sciences and economics for technology clients.
Intraguild predation, or IGP, is the killing and sometimes eating of a potential competitor of a different species. This interaction represents a combination of predation and competition, because both species rely on the same prey resources and also benefit from preying upon one another. Intraguild predation is common in nature and can be asymmetrical, in which one species feeds upon the other, or symmetrical, in which both species prey upon each other. Because the dominant intraguild predator gains the dual benefits of feeding and eliminating a potential competitor, IGP interactions can have considerable effects on the structure of ecological communities.
Moore Global is a global accountancy, advisory and consulting network of independent firms with its headquarters in London. Moore Global is ranked by the International Accounting Bulletin (IAB) as the 11th largest accountancy network in the world. The Moore Global Network consists of over 34,413 people across 112 countries.
References
- ↑ Moore, James (1993). "Predators and Prey: A new ecology of competition". Harvard Business Review. 71 (3, May–June): 75–86. PMID 10126156.
- ↑ Moore, James (2006). "Business ecosystems and the view from the firm". The Antitrust Bulletin. 51, 1 (Spring): 31. doi:10.1177/0003603X0605100103. S2CID 168156432.
- ↑ Moore, James (2013). Shared Purpose: A thousand business ecosystems, a connected community, and the future. CreateSpace. p. 5. ISBN 978-1490502397.
- ↑ Moore, James (1996). The Death of Competition: Leadership and strategy in the age of business ecosystems . New York: HarperBusiness. ISBN 978-0887308093.
| International | |
|---|---|
| National | |
