Reconstructing Reefs: Qualitative Methods and the Environmental History of the Great Barrier Reef, Australia

Given recent concerns about the degradation of coral reef\ud ecosystems world-wide, we investigated the environmental history of the Great Barrier Reef of Australia using qualitative methods. In particular,we used archival and oral history sources to reconstruct changes in coral reefs, islands and marine wildlife species for the period 1860–1970 and we evaluated the potential of qualitative methods to inform marine environmental research. Here, we argue that qualitative research offers a valuable means of reconstructing environmental changes, their drivers and their historical contexts. However, we found that qualitative methods also had important limitations. Hence we identify strategies for addressing those challenges and we suggest criteria for ensuring the accuracy and rigor of qualitative sources in marine environmental research. Overall, we argue that qualitative methods offer distinctive\ud insights into the environmental history of the Great Barrier Reef, and that qualitative reconstructions can act as important triggers for conservation of marine ecosystems

Human pulmonary dirofilariasis: a review

The authors presented a detailed summary of the geographical distribution, clinical and pathological aspects of human pulmonary dirofilariasis. Although benign, this zoonosis, of which Dirofilaria immitis is the major etiological agent, represents a medical problem since it produces symptoms which may be confused with neoplasia and thus may subject patients to unnecessary thoracic surgery. Of 229 cases cited in the literature, only 17 were reported in Brazil, despite the existence of highly favorable conditions for the transmission of this infection in man. Thus it may well be that this parasitic infection remains underdiagnosed. Finally, the importance of a differential diagnosis between dirofilariasis and pulmonary neoplasia is emphasized in cases where there is a solitary subpleural nodule ("coin lesion") present. In addition, the development and improvement of modern immunological diagnostic techniques are essential to distinguish this benign disease from other pathological conditions and thus avoid unneccessary surgery. These techniques may reveal the true prevalence of this parasitic infection in our environment