Long-term natural and human perturbations and current status of Clipperton Atoll, a remote island of the Eastern Pacific

2006 ◽  
Vol 12 (3) ◽  
pp. 207 ◽  
Author(s):  
Christian H. Jost ◽  
Serge Andréfouët

Clipperton Atoll is one of the most isolated tropical island in the world and the only atoll of the eastern Pacific. Its outer slopes also make the largest coral reef of this region. Clipperton is a remarkable site for the geochemistry of its closed eutrophic stratified lagoon, the influence of both tropical eastern Pacific and Oceania gene pool on coral reef communities, the low diversity of the marine and land fauna, and for the equilibrium of its land ecosystem. The three components of the Clipperton Atoll seascape (coral reef-lagoon-land) all appear to have remarkable properties and history. All components experienced important changes in the last century due to anthropogenic (importation of exogenous species) or natural perturbations (closing of passes, coral bleaching). Here, we review the history of these three systems (land-lagoon-coral reef) and provide new insights of the current status of the atoll based on recent surveys and high resolution IKONOS satellite imagery. Most dramatic changes occurring in the last decades include explosion in crab Gecarcinus planatus population, almost-complete desertification of the island and increase in Masked Boobies Sula dactylatra population, making Clipperton Atoll one of the most important sites for this specie in the world. This review intends to provide a sound basis to discuss the future of Clipperton balanced between conservation and development priorities, and to raise awareness on the future of a delicate ecosystem.

Author(s):  
Радивоје Симић

One of the most important ecumenical documents — the Lima document (1982), has adopted as a result of a long-term effort of the Faith and Order Commission, and since then it holds the unquestionable primacy among numerous joint documents, both within the seventy- year history of the World Council of Churches, and within the bilateral dialogues of various Christian denominations. But while the Lima document within the “Western Christianity” — especially in the churches of the English and German- speaking areas — is the subject of permanent pastoral and academic discussions, somehow within the Orthodox East — thus, within the context of the Serbian Orthodox Church, too — its proper theological reception is missing. This may be surprising if we take into consideration that, according to the opinion of many contemporary theologians, the Orthodox made an irreplaceable contribution to the creation of the Lima document — the greatest liturgical document of the ecumenical importance so far. The intention of this document was to provide a concrete framework of a (possible) joint (ecumenical) Liturgy, using the Orthodox liturgical rite as a basis. The purpose of this paper is to reactivate the discussion on the Lima topic within the Serbian Orthodox circles, aiming to foster a proper academic reception of this document in Orthodox theology, as well as to contribute to the further development of its content and possible realization of its goals within the ecumenical movement in the future.


2021 ◽  
Vol 42 (02) ◽  
pp. 271-283
Author(s):  
Manila Gaddh ◽  
Rachel P. Rosovsky

AbstractVenous thromboembolism (VTE) is a major cause of morbidity and mortality throughout the world. Up to one half of patients who present with VTE will have an underlying thrombophilic defect. This knowledge has led to a widespread practice of testing for such defects in patients who develop VTE. However, identifying a hereditary thrombophilia by itself does not necessarily change outcomes or dictate therapy. Furthermore, family history of VTE by itself can increase an asymptomatic person's VTE risk several-fold, independent of detecting a known inherited thrombophilia. In this article, we will describe the current validated hereditary thrombophilias including their history, prevalence, and association with VTE. With a focus on evaluating both risks and benefits of testing, we will also explore the controversies of why, who, and when to test as well as discuss contemporary societal guidelines. Lastly, we will share how these tests have been integrated into clinical practice and how to best utilize them in the future.


2010 ◽  
Vol 143-144 ◽  
pp. 67-71 ◽  
Author(s):  
Dong Ping Li ◽  
Zhi Ming Qu

The networking approach to the World Wide Web is defined not only by the exploration of architecture, but also by the confirmed need for interrupts. Given the current status of authenticated archetypes, steganographers dubiously desire the analysis of scatter/gather I/O. the focus in this position paper is not on whether Moore's Law can be made concurrent, distributed, and pervasive, but rather on proposing an analysis of 32 bit architectures (Grange). It is concluded that, using probabilistic and interactive information and based on relational modality, the machine system and kernels are verified, which is widely used in the future.


2006 ◽  
Vol 2 (SPS5) ◽  
pp. 21-24
Author(s):  
Rajesh Kochhar

AbstractAny international effort to promote astronomy world wide today must necessarily take into account its cultural and historical component. The past few decades have ushered in an age, which we may call the Age of Cultural Copernicanism. In analogy with the cosmological principle that the universe has no preferred location or direction, Cultural Copernicanism would imply that no cultural or geographical area, or ethnic or social group, can be deemed to constitute a superior entity or a benchmark for judging or evaluating others.In this framework, astronomy (as well as science in general) is perceived as a multi-stage civilizational cumulus where each stage builds on the knowledge gained in the previous stages and in turn leads to the next. This framework however is a recent development. The 19th century historiography consciously projected modern science as a characteristic product of the Western civilization decoupled from and superior to its antecedents, with the implication that all material and ideological benefits arising from modern science were reserved for the West.As a reaction to this, the orientalized East has often tended to view modern science as “their” science, distance itself from its intellectual aspects, and seek to defend, protect and reinvent “our” science and the alleged (anti-science) Eastern mode of thought. This defensive mind-set works against the propagation of modern astronomy in most of the non-Western countries. There is thus a need to construct a history of world astronomy that is truly universal and unselfconscious.Similarly, the planetarium programs, for use the world over, should be culturally sensitive. The IAU can help produce cultural-specific modules. Equipped with this paradigmatic background, we can now address the question of actual means to be adopted for the task at hand. Astronomical activity requires a certain minimum level of industrial activity support. Long-term maintenance of astronomical equipment is not a trivial task. There are any number of examples of an expensive facility falling victim to AIDS: Astronomical Instrument Deficiency Syndrome. The facilities planned in different parts of the world should be commensurate with the absorbing power of the acceptor rather than the level of the gifter.


2020 ◽  
Vol 65 ◽  
pp. 323-334
Author(s):  
Inga V. Zheltikova

The concept of O. Spengler suggests that the history of any culture goes through certain stages of development, the last of which is civilization. During this period creative activity in culture is replaced by mechanical imitation and lost connection with the culture formed by the «pra-phenomenon». The author correlates Spengler’s postulates with the processes of actual social reality and comes to the conclusion that contemporary Russia is going through the stage of civilization. The article raises the question of how the future is seen in this situation. The author uses the term “image of the future”, introduced by F. Polak to understand the disinterest of modern post-war Europe in its future. Thus, the lack of interest in the future can be recognized as another characteristic of the state of civilization. The existence in contemporary Russia of distinct images of the future is an open question. Using the methods of content analysis, the author comes to the conclusion that in Russian contemporary society there exists a retrospective image of the future, focused on conservative values, hierarchy of society and its closed nature to the world. Thus, it is concluded that it is wrong to talk about complete absence of images of the future in contemporary Russia. But the nature and content of these images demonstrate the low level of interest in the future, which also indicates the transition of Russian culture to civilization.


2019 ◽  
Vol 130 ◽  
pp. 269-285 ◽  
Author(s):  
E.R. Sandoval-Huerta ◽  
R.G. Beltrán-López ◽  
C.R. Pedraza-Marrón ◽  
M.A. Paz-Velásquez ◽  
A. Angulo ◽  
...  

2022 ◽  
Vol 6 (1) ◽  
pp. 01-07
Author(s):  
Mohammad Azizur Rahman ◽  
Tawhidur Rahman ◽  
Moshiur Rahman ◽  
Mirza Arif

The present article reviews the history of mushroom uses in culinary, food and medicinal values; current status and future aspect of mushroom research. Mushrooms contain biologically active polysaccharides, lipid and proteins in fruit bodies, each of them has a distinct role in health as either nutritional value or medicinal elements. Immunostimulating polysaccharides found in mushrooms, are most important for modern medicine. Several of the mushroom biomolecules have undergone phase I, II, and III clinical trials and are used extensively and successfully throughout the world for the treatment of various cancers and other diseases. Medicinal functions played by the mushrooms include antitumor, antibacterial, antioxidant, antiparasitic, antidiabetic, detoxification, cardiovascular, antihypercholesterolemia, antiviral, antifungal, hepatoprotective, immunomodulating and free radical scavenging. The present review draws attention to nutritional and medicinal importance of mushroom as well as the problems and opportunity in the future development of mushroom research.


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