Lasionectes exleyi, sp, nov., the first remipede crustacean recorded from Australia and the Indian Ocean, with a key to the world species

1996 ◽  
Vol 10 (1) ◽  
pp. 171 ◽  
Author(s):  
J Yager ◽  
WF Humphreys
Keyword(s):  
Indian Ocean ◽  
Southern Hemisphere ◽  
Western Australia ◽  
The Bahamas ◽  
World Species ◽  
Density Interface ◽  
The World ◽  
First Occurrence ◽  
The Indian Ocean

The first remipede crustacean from the Southern Hemisphere and the Indian Ocean is reported. Lasionectes exleyi, sp. nov., is described from an anchialine cave on the Cape Range peninsula of Western Australia. This is the eleventh species of modern remipede to be described and the second species to be described in the genus Lasionectes. A key to all known species is presented. The discovery of remipedes in Australia represents the first occurrence of a genus other than Speleonectes off the Bahamas Banks and only the second continental occurrence of extant remipedes. The species is known from below a density interface in a single nutrient-enriched cave.

scholarly journals Africa and the wider world: creole communities in the Atlantic and Indian Oceans

Tempo ◽  
2017 ◽  
Vol 23 (3) ◽  
pp. 465-481
Author(s):  
Malyn Newitt
Keyword(s):  
Technology Transfer ◽  
Indian Ocean ◽  
World Economy ◽  
Sub Saharan Africa ◽  
Eastern Africa ◽  
Cultural Appropriation ◽  
The World ◽  
African Slaves ◽  
The Indian Ocean ◽  
Sub Saharan

Abstract: Portuguese creoles were instrumental in bringing sub-Saharan Africa into the intercontinental systems of the Atlantic and Indian Ocean. In the Atlantic Islands a distinctive creole culture emerged, made up of Christian emigrants from Portugal, Jewish exiles and African slaves. These creole polities offered a base for coastal traders and became politically influential in Africa - in Angola creating their own mainland state. Connecting the African interior with the world economy was largely on African terms and the lack of technology transfer meant that the economic gap between Africa and the rest of the world inexorably widened. African slaves in Latin America adapted to a society already creolised, often through adroit forms of cultural appropriation and synthesis. In eastern Africa Portuguese worked within existing creolised Islamic networks but the passage of their Indiamen through the Atlantic created close links between the Indian Ocean and Atlantic commercial systems.

scholarly journals Triggering the Indian Ocean Dipole from the Southern Hemisphere

2021 ◽  
Author(s):  
Lian-Yi Zhang ◽  
Yan Du ◽  
Wenju Cai ◽  
Zesheng Chen ◽  
Tomoki Tozuka ◽  
...  
Keyword(s):  
Indian Ocean ◽  
Southern Hemisphere ◽  
Indian Ocean Dipole ◽  
Southern Oscillation ◽  
Southern Annular Mode ◽  
Triggering Mechanism ◽  
Phase Development ◽  
The Indian Ocean ◽  
High System ◽  
The Tropics

<p>This study identifies a new triggering mechanism of the Indian Ocean Dipole (IOD) from the Southern Hemisphere. This mechanism is independent from the El Niño/Southern Oscillation (ENSO) and tends to induce the IOD before its canonical peak season. The joint effects of this mechanism and ENSO may explain different lifetimes and strengths of the IOD. During its positive phase, development of sea surface temperature cold anomalies commences in the southern Indian Ocean, accompanied by an anomalous subtropical high system and anomalous southeasterly winds. The eastward movement of these anomalies enhances the monsoon off Sumatra-Java during May-August, leading to an early positive IOD onset. The pressure variability in the subtropical area is related with the Southern Annular Mode, suggesting a teleconnection between high-latitude and mid-latitude climate that can further affect the tropics. To include the subtropical signals may help model prediction of the IOD event.</p>

Interannual Rainfall Extremes over Southwest Western Australia Linked to Indian Ocean Climate Variability

2006 ◽  
Vol 19 (10) ◽  
pp. 1948-1969 ◽  
Author(s):  
Matthew H. England ◽  
Caroline C. Ummenhofer ◽  
Agus Santoso
Keyword(s):  
Indian Ocean ◽  
Western Australia ◽  
Wind Field ◽  
Large Scale ◽  
Extreme Rainfall ◽  
Ekman Transport ◽  
Eastern Indian Ocean ◽  
Basin Scale ◽  
Rainfall Extremes ◽  
The Indian Ocean

Abstract Interannual rainfall extremes over southwest Western Australia (SWWA) are examined using observations, reanalysis data, and a long-term natural integration of the global coupled climate system. The authors reveal a characteristic dipole pattern of Indian Ocean sea surface temperature (SST) anomalies during extreme rainfall years, remarkably consistent between the reanalysis fields and the coupled climate model but different from most previous definitions of SST dipoles in the region. In particular, the dipole exhibits peak amplitudes in the eastern Indian Ocean adjacent to the west coast of Australia. During dry years, anomalously cool waters appear in the tropical/subtropical eastern Indian Ocean, adjacent to a region of unusually warm water in the subtropics off SWWA. This dipole of anomalous SST seesaws in sign between dry and wet years and appears to occur in phase with a large-scale reorganization of winds over the tropical/subtropical Indian Ocean. The wind field alters SST via anomalous Ekman transport in the tropical Indian Ocean and via anomalous air–sea heat fluxes in the subtropics. The winds also change the large-scale advection of moisture onto the SWWA coast. At the basin scale, the anomalous wind field can be interpreted as an acceleration (deceleration) of the Indian Ocean climatological mean anticyclone during dry (wet) years. In addition, dry (wet) years see a strengthening (weakening) and coinciding southward (northward) shift of the subpolar westerlies, which results in a similar southward (northward) shift of the rain-bearing fronts associated with the subpolar front. A link is also noted between extreme rainfall years and the Indian Ocean Dipole (IOD). Namely, in some years the IOD acts to reinforce the eastern tropical pole of SST described above, and to strengthen wind anomalies along the northern flank of the Indian Ocean anticyclone. In this manner, both tropical and extratropical processes in the Indian Ocean generate SST and wind anomalies off SWWA, which lead to moisture transport and rainfall extremes in the region. An analysis of the seasonal evolution of the climate extremes reveals a progressive amplification of anomalies in SST and atmospheric circulation toward a wintertime maximum, coinciding with the season of highest SWWA rainfall. The anomalies in SST can appear as early as the summertime months, however, which may have important implications for predictability of SWWA rainfall extremes.

Sovereignty in a Minor Key

2021 ◽  
Vol 33 (1) ◽  
pp. 41-61
Author(s):  
Thomas Blom Hansen
Keyword(s):  
Twentieth Century ◽  
Eighteenth Century ◽  
Indian Ocean ◽  
Western Europe ◽  
Nation State ◽  
The World ◽  
The Indian Ocean ◽  
Theories Of Sovereignty ◽  
A Minor ◽  
State Form

Abstract Theories of sovereignty in the twentieth century are generally based on a teleological “out-of-Europe” narrative where the modern, centralized nation-state form gradually spread across the world to be the foundation of the international order. In this article, the author reflects on how the conceptualization of sovereignty may change if one begins a global account of modern sovereignty not from the heart of Western Europe but from the complex arrangements of “distributed sovereignty” that emerged in the Indian Ocean and other colonized territories from the eighteenth century onward. These arrangements were organized as multiple layers of dependency and provisional domination, captured well by Eric Beverley's term minor sovereignty. Thinking through sovereignty in a minor key allows us to see sovereignty less as a foundation of states and societies and more as a performative category, emerging in a dialectic between promises of order, prosperity, and law, and the realities of violent domination and occupation.

Uneasy Litter Mates: Population and Progress

1993 ◽  
Author(s):  
Garrett Hardin
Keyword(s):  
Indian Ocean ◽  
Possible Worlds ◽  
New World ◽  
Tenth Century ◽  
Manifest Destiny ◽  
Fifth Century ◽  
Human Species ◽  
The World ◽  
The Indian Ocean ◽  
Southern Iraq

In the fifth century B.C., Herodotus reported that there had been a time when a person could walk across North Africa from the Atlantic to the Indian Ocean and be always in the shade of trees. No more: the land was well on the way to becoming the desert we know today. Herodotus generalized: "Man stalks across the landscape, and deserts follow in his footsteps." In the tenth century A.D., a Samanid prince identified four earthly paradises: the regions of Samarkand, southern Persia, southern Iraq, and Damascus. No one who has visited any of these sites now would dream of calling it a paradise. They have been cursed with wars, but warfare is only a secondary cause of their degradation. Throughout history human exploitation of the earth has produced this progression: colonize—destroy—move on. When the Pollyannas write history they focus only on the first of these three actions, the desirable effects of which were most evident during the rapid colonization of the New World. In 1845 a now obscure American journalist coined a deathless phrase when he spoke of "the fulfillment of our manifest destiny to overspread the continent allotted by Providence." "Manifest destiny" is one of those catchphrases we love. We would not welcome the words of a journalist who identified colonization as but a prelude to destruction and abandonment. The restless "moving on" of the human species has depended on always having fresh land to move to. Optimists are not easily frightened by the results, of course: as late as 1980 one Pollyanna brightly explained how all turned out for the best in this best of all possible worlds: "Each year deserts the world over engulf an area the size of Massachusetts. A great deal of land lost is agricultural. . . . Fortunately, however, land is always being replaced or coming under cultivation to make up for land lost." An ecologist—ever guided by the question "And then what?"—would insist on a clarification of the above quotation: Does "always" mean "forever"? If so, it implies that there are no limits to earthly space. It is not surprising that ecologists are not the most popular of people in a growth-oriented economy.

The Portuguese and the Indian Ocean : a review

Antiquity ◽  
1948 ◽  
Vol 22 (85) ◽  
pp. 4-7
Author(s):  
Elaine Sanceau
Keyword(s):  
Indian Ocean ◽  
16Th Century ◽  
The World ◽  
History Of ◽  
The Indian Ocean ◽  
The Subject ◽  
Century Literature

It was from the Portuguese that Europe first learned something about India. Their 16th century literature abounds in information on the subject. Duarte Barboza, Tomé Pires, Castanheda, João de Barros, Gaspar Correa even, though he says that he will only write about the exploits of his countrymen, have each one given to the world many interesting facts regarding the ethnology, the customs and beliefs, and some account of the history of that baffling sub-continent which Portugal, of European nations, was the first to observe at close quarters.

Sailing Ships, Naval Expeditions and ‘Project Mausam’

2020 ◽  
Vol 76 (3) ◽  
pp. 411-424 ◽  
Author(s):  
Himanshu Prabha Ray
Keyword(s):  
Nineteenth Century ◽  
Indian Ocean ◽  
Interdisciplinary Research ◽  
Underwater Archaeology ◽  
Practical Training ◽  
Indonesian Archipelago ◽  
The World ◽  
The Indian Ocean

In recent years, sailing ships of the Indian Navy have been increasingly involved in diplomatic missions and cultural voyages across the world, in addition to their primary purpose of providing practical training in navigation techniques and seamanship. These three-masted barques built at the Goa Shipyard and used by the Indian Navy are very different from wooden sailing vessels that traversed the Indian Ocean in the premodern period prior to the development of steamship navigation in the nineteenth century. Nonetheless, these distinctions have often been blurred as these modern naval ships have been utilised to recreate historical ‘expeditions’ such as the much-celebrated Chola invasion of Srivijaya in the Indonesian archipelago. Nor is India the only country to be involved in promoting this ‘popular history’ for contemporary geopolitical interests, as is evident from China’s efforts to rebuild ships used in the Voyages of Admiral Zheng He across the Indian Ocean. What gets short shrift in the process is investment in research in underwater archaeology and the discovery and preservation of shipwreck sites. This article highlights the urgent need for interdisciplinary research in premodern shipping and seafaring activity beyond the rhetoric of valorising national heroes.

scholarly journals The Incidence of Tetrodotoxin and Its Analogs in the Indian Ocean and the Red Sea

Marine Drugs ◽  
2019 ◽  
Vol 17 (1) ◽  
pp. 28 ◽  
Author(s):  
Isidro José Tamele ◽  
Marisa Silva ◽  
Vitor Vasconcelos
Keyword(s):  
Indian Ocean ◽  
Red Sea ◽  
Geographical Area ◽  
Human Health Risk ◽  
Human Consumption ◽  
Detection Techniques ◽  
Ocean Area ◽  
The World ◽  
Puffer Fish ◽  
The Indian Ocean

Tetrodotoxin (TTX) is a potent marine neurotoxin with bacterial origin. To date, around 28 analogs of TTX are known, but only 12 were detected in marine organisms, namely TTX, 11-oxoTTX, 11-deoxyTTX, 11-norTTX-6(R)-ol, 11-norTTX-6(S)-ol, 4-epiTTX, 4,9-anhydroTTX, 5,6,11-trideoxyTTX, 4-CysTTX, 5-deoxyTTX, 5,11-dideoxyTTX, and 6,11-dideoxyTTX. TTX and its derivatives are involved in many cases of seafood poisoning in many parts of the world due to their occurrence in different marine species of human consumption such as fish, gastropods, and bivalves. Currently, this neurotoxin group is not monitored in many parts of the world including in the Indian Ocean area, even with reported outbreaks of seafood poisoning involving puffer fish, which is one of the principal TTX vectors know since Egyptian times. Thus, the main objective of this review was to assess the incidence of TTXs in seafood and associated seafood poisonings in the Indian Ocean and the Red Sea. Most reported data in this geographical area are associated with seafood poisoning caused by different species of puffer fish through the recognition of TTX poisoning symptoms and not by TTX detection techniques. This scenario shows the need of data regarding TTX prevalence, geographical distribution, and its vectors in this area to better assess human health risk and build effective monitoring programs to protect the health of consumers in Indian Ocean area.

scholarly journals Late Miocene calcareous nannofossil genus <i>Catinaster:</i> taxonomy, evolution and magnetobiochronology

1998 ◽  
Vol 17 (1) ◽  
pp. 71-85 ◽  
Author(s):  
Alyssa Peleo-Alampay ◽  
David Bukry ◽  
Li Liu ◽  
Jeremy R. Young
Keyword(s):  
Indian Ocean ◽  
Gulf Of Mexico ◽  
Systematic Study ◽  
Late Miocene ◽  
Equatorial Pacific ◽  
Calcareous Nannofossil ◽  
New Subspecies ◽  
Eastern Equatorial Pacific ◽  
First Occurrence ◽  
The Indian Ocean

Abstract. A systematic study on the evolution and stratigraphic distribution of the species of Catinaster from several DSDP/ODP sites with magnetostratigraphic records is presented. The evolution of Catinaster from Discoaster is established by documentation of a transitional nannofossil species, Discoaster transitus. Two new subspecies, Catinaster coalitus extensus and Catinaster calyculus rectus are defined which appear to be intermediates in the evolution of Catinaster coalitus coalitus to Catinaster calyculus calyculus. The first occurrence of C. coalitus is shown to be in the lower part of C5n.2n at 10.7–10.9 Ma in the low to mid–latitude Atlantic and Pacific Oceans. The last occurrence of C. coalitus coalitus varies from the upper part of C5n.2n to the lower portion of C4A. Magnetobiostratigraphic evidence suggests that the FO of C. calyculus rectus is diachronous. Catinaster mexicanus occurs in the late Miocene and has been found only in the eastern equatorial Pacific, the Indian Ocean and the Gulf of Mexico.

Sign in / Sign up

Export Citation Format

Share Document