Ecological

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Ecological
Ecology, study of the relationship between organisms and their physical and biological environment. The physical environment includes light and heat or solar radiation, humidity, wind, oxygen, carbon dioxide and soil nutrients, water and atmosphere. The biological environment formed by living organisms, primarily plants and animals.

Because of the different approaches needed to study organisms in their natural environment, ecology uses disciplines such as climatology, hydrology, physics, chemistry, geology and soil analysis. To study the relationships between organisms, ecology, science uses as diverse as animal behavior, taxonomy, physiology and mathematics.

The growing interest of the public regarding environmental issues has become the word ecology in a term often misused. Is confused with environmental programs and environmental science (see Environment). Although it is a distinct scientific discipline, ecology contributes to the study and understanding of environmental problems.

The term ecology was coined by German biologist Ernst Heinrich Haeckel in 1869, derived from the Greek oikos (home) and shares its root with economy. That is, ecology means the study of the economy of nature. Part of the modern ecology began with Charles Darwin. In developing the theory of evolution, Darwin stressed the adaptation of organisms to their environment through natural selection. Also made major contributions to plant geographers as Alexander von Humboldt, deeply interested in the how and why the distribution of plants in the world.

Ecological Value
Module by: Melina Laverty, Eleanor Sterling. E-mail the authors Natural communities are finely-tuned systems, where each species has an ecological value to the other species that are part of that ecosystem. Species diversity increases an ecosystem's stability and resilience, in particular its ability to adapt and respond to changing environmental conditions. If a certain amount, or type (such as a keystone species) of species are lost, eventually it leads to the loss of ecosystem function. Many ecosystems though have built-in redundancies so that two or more species' functions may overlap. Because of these redundancies, several changes in the number or type of species may not impact an ecosystem. However, not all species within an ecosystem are of the same importance. Species that are important due to their sheer numbers are often called dominant species. These species make up the most biomass of an ecosystem. Species that have important

ecological roles that are greater than one would expect based on their abundance are called keystone species. These species are often central to the structure of an ecosystem, removal of one or several keystone species may have consequences immediately, or decades or centuries later (Jackson et al. 2001[link]). Ecosystems are complex and difficult to study, thus it is often difficult to predict which species are keystone species. The impact of removing an individual or several keystone species from kelp forests in the Pacific is examined in Example 1.
EXAMPLE 1: Northern Pacific Kelp Forests

Kelp forests, as their name suggests, are dominated by kelp, a brown seaweed of the family Laminariales. They are found in shallow, rocky habitats from temperate to subarctic regions, and are important ecosystems for many commercially valuable fish and invertebrates. Vast forests of kelp and other marine plants existed in the northern Pacific Ocean prior to the 18th century. The kelp was eaten by herbivores such as sea urchins (Family Strongylocentrotidae), which in turn were preyed upon by predators such as sea otters (Enhydra lutris). Hunting during the 18th and 19th centuries brought sea otters to the brink of extinction. In the absence of sea otters, sea urchin populations burgeoned and grazed down the kelp forests, at the extreme creating "urchin barrens," where the kelp was completely eradicated. Other species dependent on kelp (such as red abalone Haliotis rufescens) were affected too. Legal protection of sea otters in the 20th century led to partial recovery of the system. More recently sea otter populations in Alaska seem to be threatened by increased predation from killer whales (Orcinus orca) (Estes et al. 1998 [link]). It appears that whales may have shifted their diet to sea otters when populations of their preferred prey, Stellar sea lions (Arctocephalus townsendi) and Harbor seals (Phoca vitulina) declined. The exact reason for the decline in the sea lion and seal populations is still unclear, but appears to be due to declines in their prey in combination with increased fishing and higher ocean temperatures. As a result of the loss of sea otters, increased sea urchin populations are grazing down kelp beds again.

The Transformative value of Ecological Pragmatism. An Introduction to the Work of Bryan G. Norton
Hicham-Stéphane Afeissa
Abstract

| Index | Editor's notes | Publication history | Text | Bibliography | Notes | Reference | Author

ABSTRACT
English

In the space of only a few years, Bryan Norton has become one of the essential actors of environmental ethics through his launching of what has become one of its dominant trends: environmental pragmatism. Environmental pragmatism refuses to take a stance in the dispute between the defenders of anthropocentrist ethics and the supporters of nonanthropocentrist ethics. Instead, Norton prefers to distinguish between "strong anthropocentrism" and "weak-or extended-anthropocentrism´ and develops the idea that only the latter is capable of not under-estimating the diversity of instrumental values that humans may derive from the natural world. The practical difference between these two kinds of theories is considerable.

Bryan G. Norton is currently Professor of Philosophy and Political Science at the School of Public Policy, Georgia Institute of Technology, Atlanta, GA. Born on July

19, 1944 in Marshall (Michigan), he enrolled in several university courses (sociology, political science and philosophy). In 1970, he submitted a thesis on the philosophy of Rudolf Carnap and was awarded a Ph.D. Several years later, this was the subject of his first important publication (Linguistic Frameworks and Ontology: a Re-Examination of Carnap's Metaphilosophy). His interest in environmental issues emerged during that same period, through the organisation of a series of symposia and seminars of which he was the Principal Investigator, on the subject ofWilderness (1977), on the relationship between Man and Nature (1978-1979) and other subjects such as the link between ecology and environmental ethics (1980). Over the next three years when he was teaching at the University of Maryland as a Research Associate in the Department of Philosophy and Public Policy (1981-83), he coordinated work on the issue of the preservation of species and edited the publication in 1986 of a volume bringing together the main results of this prolonged collegial reflection. He wrote the preface, introductions to several sections and two of its chapters (The Preservation of Species; The Value of Biological Diversity). Meanwhile, he published a succession of decisive articles in the prestigious reviewEnvironmental Ethics. They were to have a significant impact on the history of environmental ethics, by giving them a pragmatic turn according to a logic which the author retrospectively reconstructs as follows: 2In the first paper, ["Environmental Ethics and Nonhuman Rights" (1982a)], I expressed doubts that environmental concerns could be expressed in terms of "rights" because of the systemic nature of environmental goods and the individual nature of rights (and utilities). The second paper ["Environmental Ethics and the Rights of Future Generation" (1982b)], more positive in nature argued for the possibility of a more holistic idea of what we owe the future. At that time, I had not seriously considered an explicit appeal to pragmatism, although I think the basic approach of both these papers was consistent with pragmatism. But in developing the "weak anthropocentrism" idea, [in "Environmental Ethics and Weak Anthropocentrism" (1984)] I began to see that one could support an environmental ethic without "extension" of human ethical concepts to nonhumans, which meant I could offer an intelligible alternative to non anthropocentrism. Later in the 1980s, I began to see that, if one builds an ethic that is adequately long-sighted and adequate to capture the long-term advantages of protection of natural systems, then this ethic would probably coincide in many of its policy implications with a well-worked out nonanthropocentric theory. This led, eventually, to my paper ["Conservation and Preservation: A Conceptual Rehabilitation" (1986b)], published in 1986, where I first proposed, at the end of the article, the "convergence hypothesis". This formulation is, in my view, the first step toward a more "pragmatist" position, an idea that was developed in my 1991 book [Toward Unity Among Environmentalists]. The convergence hypothesis seems to me to be pragmatic in the sense that it suggests that anthro and nonanthro are "philosophical" theories that make little or no difference to practice (Bryan Norton, Personal communication).
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1 In which, man, in the final analysis, is the yardstick for everything and the single end-point, wi(...) 2 For which, independently of any human evaluation, nature includes intrinsic objectives and natural (...)

3In the space of only a few years, Bryan Norton has become one of the essential actors of environmental ethics through his launching of what has become one of its dominant trends: environmental pragmatism. The originality of his pragmatism in the context of environmental ethics is perhaps best described as a refusal to take a stance in the dispute between the defenders of anthropocentrist ethics1 and the supporters

of nonanthropocentrist ethics2. Norton's early philosophical endeavours sought to challenge the practical relevance of this entire speculative issue by raising two closely interconnected types of argument.

4The first of these puts forward the necessarily militant component of environmental ethics in its role as an emerging field of research. In this respect, there are only two possible outcomes: either environmental ethicists genuinely aim to guide policies by subjecting them to relatively rational rules, in which case their failure to achieve this objective so far should encourage them to consider, firstly, what it is in their way of expressing and dealing with problems that has prevented them from succeeding, and secondly, to adapt their discursive strategy to the realities of politics; or else the theorists of environmental ethics choose to pursue their metaphysical wrangles over the status of the intrinsic value of natural entities, over the possibility of considering ecosystems from a moral standpoint and other issues such as the number of angels who can dance on the head of a pin, in which case they need to decide once and for all whether they really care about the current ecological crisis. 5According to Norton, what actually matters as regards the environment, is not so much taking principled stances, but rather developing rational aids to decisionmaking, so that the various actors can agree on what should be done and develop the concrete policy measures which need to be implemented. In this sense, petty in-fighting between anthropocentrists and non-anthropocentrists, humanists and ecocentrists, "shallow" and "deep ecologists", etc., are all the more damaging that they divide environmental ethicists and stifle efforts for concerted and effective action. 6The second argument makes the point that the discussion between anthropocentrists and non-anthropocentrists is particularly futile insofar as the major concept of "human interests" (or human utility), on which the whole discussion focuses, is left very much undefined. The fact that satisfying human interests does not necessarily involve the irreversible destruction of the object of desire is insufficiently noted: there is a distinction to be made between utility which is satisfied by the immediate consumption of natural goods (raw materials, agricultural products, etc.) and a utility which implies the conservation of the useful object since conservation is a prerequisite for satisfying human interests (this is the case for all the ecological services provided by nature without which we would very soon be deprived of any access to consumer goods). More generally, far from being no more than a source of raw materials or an open-air dumping ground for our waste, nature can have an aesthetic, moral, spiritual or scientific value for humans. In this case, so that the satisfaction nature provides can endure, the object must remain intact since satisfaction is in a way inseparable from the object itself, to the point of being inherent to it²making it possible, so to speak, to assign a educational, (and no longer metaphysical) meaning to the concept of intrinsic value, inasmuch as the objects of satisfaction are not considered to be indefinitely and indiscriminately substitutable.
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3 It is this argumentative strategy which enables Norton to plead in favour of species preservation(...)

7From this stems the concept of distinguishing, as Norton did in the early 1980s, between "strong anthropocentrism" and "weak (or extended) anthropocentrism. Only the latter is capable of not underestimating the diversity of instrumental values that humans may derive from the natural world, and correlatively not homogenising the plurality of interests or preferences they experience (a spontaneous "feeling" of preference is essentially different from a "considered" preference which is mediated by a given vision of the world). A theory is said to bestrongly anthropocentrist if all the natural values it recognises are related to the satisfaction of preferences felt by human beings. A theory of value is said to beweakly

anthropocentrist if all the natural values which it recognises are related to the influence exerted by a given "felt" preference on the ideals which structure the vision of the world (and on which are essentially based "considered" preferences)3.

8The practical difference between these two kinds of theories is considerable. Insofar as preferences felt by humans are not subject to any review within the value system of strong anthropocentrism, there is no way in which can be criticised the attitude of those for whom nature is no more than a store of raw materials to be extracted and used in manufacturing products to satisfy human preferences. Inversely, insofar as weak anthropocentrism recognises that felt preferences may, or may not, be rational (in the sense that they may be judged as not being consonant with a rational vision of the world), it provides a framework for the possible critical review of the value systems which prescribe a relationship with nature based on pure exploitation:
In this way, weak anthropocentrism makes available two ethical resources of crucial importance to environmentalists. First, to the extent that environmental ethicists can make a case for a world view that emphasizes the close relationship between the human species and other living species, they can also make a case for ideals of human behavior extolling harmony with nature. These ideals are then available as a basis for criticizing preferences that merely exploit nature. Second, weak anthropocentrism as here defined also places value on human experiences that provide the basis for value formation. Because weak anthropocentrism places value not only on felt preferences, but also on the process of value formation embodied in the criticism and replacement of felt values with more rational ones, it makes possible appeals to the value of experiences of natural objects and undisturbed places in human value formation. To the extent that environmentalists can show that values are formed and informed by contact with nature, natures takes on value as a teacher of human values. (Norton, B., 1984, p. 135)

9This latter value is the one which Norton soon came to designate by the name of "transformative value", i.e. a value capable of transforming preferences in accord with a higher ideal. It is remarkable that this is neither an instrumental, nor a noninstrumental (or intrinsic) value, but rather a value which cannot be reduced to either of these categories, which are therefore revealed as unable to express the entire range of values that humans can attribute to nature. Rather than be forced into accepting this bipartite classification of natural values, Norton suggests an acceptance of their essential plurality and situating them in a kind of continuum, ranging from the values of consumer society to aesthetic, spiritual and other similar values. 10In such circumstances, the environmentalist's task, when entering the public arena, will be to defend and command the respect² to the fullest extent possible² of the above principles, while seeking to define an environmental policy capable of the fullest and most harmonious integration of the entire range of natural values. Norton's belief on this point, is that programmes for the protection of the environment are perfectly justifiable on the basis of a sufficiently broad interpretation of anthropocentric instrumental values and, better still, that this point of view has an undeniable practical advantage, on the one hand because it is the mode of justification which is the most current among environmentalists and therefore constitutes an immediately recognised forum for debate and, on the other hand, because by neutralising the axiological controversy between intrinsic value and human utility, it allows for individual subjectivity to choose between the various philosophical options. As a result, the debate is moved to the area of rational modes of environmental action. 11It is this idea that the author, after further consideration, reworded under the name of "convergence principle", meaning that between defenders of intrinsic value and supporters of anthropocentrism, there is a double convergence despite

disagreement on the value principle. On the one hand, the convergence is in practical terms (as regards recommended measures and action strategies); and on the other hand it is axiological (due to the possibility of taking into consideration values ignored by strict anthropocentrism).
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4 For more on that subject, see Light, A. and Katz, E. (1996, p. 4 sq.).

12As Norton points out specifically, the corollary of this principle is the recognition of the validity of two distinct types of methodological pluralism, one of which could be named "theoretical pluralism" and the other "meta-theoretical pluralism". The first of these accepts the existence of a multiplicity of mutually incommensurable theoretical models which can be the foundation for the moral considerability of natural entities. The models remain theoretically different but in practice this makes almost no difference, as for example, the model based on the criterion of animal sentience (as in Peter Singer) to justify animals being given moral consideration, or the one which refers to the determination of all organic individuality as the teleological centre of life (as in Paul Taylor). The second type of pluralism accepts the possibility that several divergent moral theories, which do not even agree on the determination of environmental ethics issues, can nevertheless work together as part of a single moral enterprise²as happens for example when ecofeminists and ecocentric environmentalists cooperate to save the same natural habitat, even though their respective commitment is in practice based on very different theoretical considerations4.

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5 For that matter, it is probably because Bryan Norton is a keen advocate of striking a reasonable b (...)

13The advantage of a pluralistic approach to values is that, by its very nature, it is prepared to seek compromise and determine jointly, through environmental policy negotiations, the conditions for cooperative action, thus making it possible to form strategic causal coalitions5. The chances of finding common ground are all the greater as environmental pragmatism does not refer to any concept which would be difficult to justify in philosophy, as that of "intrinsic value", nor does it in any way suppose that one needs to adopt, before even entering into discussion, any particular "vision of the world". Although it does firmly denounce the attempt to reduce all natural values to the status of economic ones, and although it criticises the systematic use of cost-benefit analysis and warns against the pitfalls of the contingent valuation method, environmental pragmatism shares with decision-makers the fundamental and firmly-held belief that solutions to environmental problems must be found in the sustainable development of economic systems, for the sake of our responsibility to future generations who must be able to benefit from the generosity and services offered by the ecosystem:
In our search of an environmental ethic we will never, I submit, find any environmental values or goals more defensible than the sustainability principle". (Norton, B., 2003, p. 63)

14Determination of the conditions for sustainable development has been the focus of all Norton's philosophical efforts for over a decade²efforts which culminated in the publication in 2005 of his most ambitious work to date, in which he laid the groundwork for an adaptative ecosystem management philosophy (Sustainability. A philosophy of Adaptative Ecosystem Management). 15In harmony with the main theoreticians of sustainability, Norton considers that the problem of morally acceptable conditions for sustainable development needs to be considered in the framework of a theory for intergenerational equity. He also considers that the differences between currently available sustainability models are due to the way the problem of the determination of obligations we have to future generations is raised and the solutions to it are found. 16Our obligations to future generations can be emphasised in three different ways. The distanceproblem can be our point of focus, in which case the question is determining how far into the future our moral obligations should extend. In this sense, it would appear that our usual approach to environmental valuation tends to consider all the values extant in the future as discountable functions of current values, so that they become irremediably rooted in the present and do not adequately consider the interests of future people. We then need to decide whether it is possible to develop a value theory that can determine what is fair for both present and future generations.

17Or else we can focus on the ignorance argument, the question then being to find out who will be living in the future and what they will be needing. To the extent that individuals in the future cannot express their concerns and interests today and since we are reluctant to force on them any particular version of what is "good", it becomes difficult to even begin evaluating the policies that might affect them. Finally, we could emphasise the typology of effects problem, signifying that we would need to find out which of our present actions have truly moral implications for the future. 18Norton considers that two major sustainability models are currently emerging. Some sustainability theoreticians maintain (by granting some pre-eminence to the ignorance argument) that what we owe the future is no more than the opportunityto benefit from a certain number of utilities, undiminished from one generation to the next. In which case, for the supporters of that principle, intergenerational equity should be a comparison between the possibilities of benefiting from various forms of well-being available to individuals living in different time frames. The aim of sustainability does not in any way require that we leave intact any specific resource, but rather that we try and maintain an undiminished stock of capital in the shape of a wealth of investment, productive capacity and technological expertise. What should be passed on from one generation to the next is the same level of possibilities and the same equitable scope of opportunity. Since it is probably impossible to curb or control the type of use that is made of the environment and the consequent distribution of the fruits of cooperation which corresponds to what today's people consider is good for themselves, and since²in certain circumstances ²diminished resources or a deterioration of the quality of the environment can be the outcome of a totally rational use of resources by previous generations, then each succeeding generation is duty bound to make sure that the range of life opportunities available to its offspring is no less satisfactory than the one they enjoyed themselves. This implies that each generation recognises that it is morally bound to offset depleted resources or a degraded environment by developing an equivalent production potential. 19Other sustainability theoreticians recommend a different course: instead of comparing individual forms of well-being, a list of "features" which must be saved for the benefit of future generations should be drawn up. "Features" means any aspect of the natural world which is physically describable, including important sites, groups of biological classifications, fixed reserves of resources and important ecological processes. Examples of such "features" would include: sufficient supplies of safe drinking water; the Grand Canyon, grizzly bears (or more generally, "biological diversity"); an intact ozone layer in the upper atmosphere; and perhaps landscapes such as mainly forested areas. By this approach (whereby only the problem of the typology of effects is considered to be truly important), the assumption that resources are totally fungible is unacceptable and, on the contrary, it is important to specify the environmental characteristics and processes which are essential for future well-being and to state that they are so important that any decision as to what must be passed on that does not include them would inevitably cause future generations to be cheated. The loss of such characteristics should be seen as a deterioration of the quality of life for future generations, regardless of the amounts paid by way of compensation or the total wealth offered as a substitute to compensate for their loss.

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