We analyse theories and research approaches in ecology and find that they fall into two internally homogeneous groups of linked ideas, each comprising a unique set of premises. The two sets of interpretive statements are thus mutually exclusive; they constitute alternative theoretical developments in ecology and should not be seen as complementary. They can, therefore, be considered two paradigms (Kuhn, 1962). Our interpretation is supported by the minimal overlap, if any, in the premises and research directions of the two approaches. (...) We label the dominant group of ideas the demographic paradigm and the less developed one the autecological paradigm. The internal logic of the demographic paradigm of ecology is strongly developed and consistent. Its premises and logic extend into current models of population genetics, biogeography, palaeontology, evolutionary theory and conservation biology. Nevertheless, many phenomena contradict the premises of the demographic paradigm; these contradictions cannot be accommodated within its theoretical framework without major disruptions in logic ensuing. Such phenomena can, in contrast, be understood in terms of the autecological paradigm. Because the status and strengths of the autecological paradigm are generally unrecognised and because autecology is frequently misrepresented in the literature, we redefine its premises and clarify its structure and aims as an aid to its future development. (shrink)

Ecological theory is built upon assumptions about the fundamental nature of organism-environment interactions. We argue that two mutually exclusive sets of such assumptions are available and that they have given rise to alternative approaches to studying ecology. The fundamentally different premises of these approaches render them irreconcilable with one another. In this paper, we present the first logical formalisation of these two paradigms.The more widely-accepted approach - which we label the demographic paradigm - includes both population ecology and community ecology (...) (synecology). Demographic ecology assumes that the environment is relatively stable and that biotic processes, governed predominantly by resource availability, are the most important of ecological and evolutionary influences. Moreover, ecological processes are assumed to translate into directional selection pressures that drive significant evolutionary change on a local scale through the process of optimisation. (shrink)

Explaining the persistence of populations is an important quest in ecology, and is a modern manifestation of the balance of nature metaphor. Increasingly, however, ecologists see populations (and ecological systems generally) as not being in equilibrium or balance. The portrayal of ecological systems as “non-equilibrium” is seen as a strong alternative to deterministic or equilibrium ecology, but this approach fails to provide much theoretical or practical guidance, and warrants formalisation at a more fundamental level. This is available in adaptation theory, (...) which allows population persistence to be explained as an epiphenomenon stemming from the maintenance, survival, movement and reproduction of individual organisms. These processes take place within a physicochemical and biotic environment that persists through structured annual cycles, but which is also spatiotemporally dynamic and subject to stochastic variation. The focus is thus shifted from the overproduction of offspring and the consequent density dependent population pressure thought to follow, to the adaptations and ecological circumstances that support those relatively few individuals that do survive. (shrink)

Studies of coexistence are based ultimately on the assumption that competitive exclusion is a general and accredited phenomenon in nature. However, the ecological and evolutionary impact of interspecific competition is of questionable significance. Review of three reputed examples of competitive exclusion in the field (Aphytis wasps, red and grey squirrels, and triclads) demonstrates that the widely-accepted competition-based interpretations are unlikely, that alternative explanations are overlooked, and that all other reported cases need critical reinvestigation. Although interspecific competition does undoubtedly occur, the (...) evidence suggests it is usually too weak and intermittent a force to achieve competitive exclusion or any other ecologically-significant result, except perhaps rarely and on a minor scale. Coexistence and community structure are therefore not ecological conditions to be especially accounted for, especially since their inherently comparative methods generate information that is largely superficial. Alternative questions that relate directly to species, the units of diversity, are discussed and they emphasize the primary habitat requirements of species, which are fixed during speciation. Neither the comparative approach of coexistence studies, nor the investigation of pattern is likely to be profitable, since the acquisition of species-specific characteristics during speciation requires historical research. At least one alternative theory of ecology, based on the close adaptation of organisms to the environment, is available. (shrink)

In acute inpatient mental health services, patients commonly demonstrate extreme behaviours. A number of coercive practices, such as locked doors, enforced medication and seclusion, are used in these settings to control such behaviours. The aim of this report is to explore briefly some of the contemporary debates pertaining to seclusion. A perusal of the literature reveals a clarion call to end the practice of seclusion, without consideration of feasible alternatives. It is hoped that this brief report will encourage further evidence-based (...) discussion and research initiatives on this important ethical topic. (shrink)

Locked inpatient units are an increasing phenomenon, introduced in response to unforseen abscondences and suicides of patients. This paper identifies some value issues concerning the practice of locked psychiatric inpatient units. Broad strategies, practicalities and ethical matters that must be considered in inpatient mental health services are also explored. The authors draw on the published research and commentary to derive relevant information to provide to patients and staff regarding the aims and rationales of locked units. Further debate is warranted in (...) relation to best practice. Inpatient staff need to be aware of their practice values, be able to access education and supervision and negotiate apparent contradictions. Further patient/clinician focused enquiry is necessary to mitigate the negative and stigmatising effects of locked mental health units. (shrink)

All major journalism ethical codes explicitly state that journalists should protect editorial copy from undue influence by outside sources. However, much of the previous research on agricultural information has concentrated on what information various media communicate (gatekeeping studies) or communication's role in increasing innovation adoption (diffusion studies). Few studies have concentrated specifically on organizational and structural constraints that might adversely affect agricultural journalists' ethical standards; those that have, focus largely on farm magazines. A study of newspaper reporters who cover agricultural (...) news found that the most pressing ethical concern is the effect of advertiser (agri-business) pressure on editorial copy, and that their concerns in general parallel those of farm magazine writers and editors. The majority reported being in situations in which they might be exposed to advertiser pressure, including pressures to change or withhold editorial copy. Large minorities suggested that advertising pressures affect the overall environment in which agricultural journalists work, and more than one in ten said they allow advertiser pressures to influence editorial decisions. The newspaper reporters who cover agricultural beats showed slightly more resistance to advertiser pressure than did farm magazine editors in a parallel study. (shrink)

This second paper reports on a small ethnographic study of Argentine psychiatrists. A carefully selected group of six psychiatrists currently practicing in Buenos Aires participated in an in-depth semi-structured interview. The transcripts of the interviews were coded and a thematic analysis method was applied to construct a local theory of the professional values constructed by Argentine psychiatrists, and the circumstances in which such values were constructed. Our analysis indicated that Argentine psychiatrists constructed a number of values, frequently perceived as obligations (...) to their professional group and the needs of their patients. The two main strategies employed by Argentine psychiatrists were the diagnostic act and advocacy. We also identify that these values emerge in the context of recent broad historical and cultural inl uences upon the profession of psychiatry in Argentina, and the Argentine population in general. (shrink)

SUMMARYSchleiermacher's doctrine of the Trinity is constituted not only by his Glaubenslehre but also in Über den Gegensatz zwischen der Sabellianischen und der Athanasianischen Vorstellung von der Trinität . Schleiermacher can be seen to construe the persons of the Trinity as the circumscription of divinity. This point leads to consideration of divine wisdom as the ground of both the immanent and economic Trinity.

Mass media images offer audiences models for how to perform the social roles they depict. Opinions and other attributes of credible media models may likewise be embraced by audience members seeking to identify with those models. Thus farm magazine narratives about “successful” farmers may encourage readers to model or aspire to featured farmers' production and management techniques and ascribe legitimacy to models' responses to current agricultural issues. However, production of agrarian images in the mass media — including images of farms, (...) farmers, and farmers' values — are inevitably biased such that media representations of successful farmers selectively present objective characteristics in terms of the media's own ideological frameworks, which in turn reflect the dominant ideology of the social relations in which the media are engaged. As a first step in identifying farm magazines' role in creating social models for farmers, this study analyzes articles featuring “successful,” “leading,” or “innovative” farmers in leading agricultural magazines. The featured farmers are categorized according to enterprise characteristics and characterizations of them and their management philosophies. Findings show that farmers in farm magazines have larger than average operations and are portrayed in a way that blends a “farming as business” orientation with more conventional agrarian values but that generally omits non-business aspects of farm life. (shrink)

Communication cannot be overlooked as a component of sustainable agriculture; theoretical perspectives from communication science, such as coorientation and information systems analysis, can suggest ways to help improve the chances for sustainability, as can attention to specific types of communication. Communicationabout sustainable agriculture, which creates political-economic and social environments that promote development of sustainable systems, must more clearly define sustainability and what is to be sustained and must help producers and the public “think agroecologically.” Communicationof sustainable agriculture, which creates and (...) disseminates information about how to farm and consume sustainably, must expand the standards for what constitues valid information by increasing farmer participation in production research and easing farmer access to media to disseminate on-farm trial findings. (shrink)