scholarly journals Life Histories of Two Endangered Sea SkatersHalobates matsumuraiEsaki andAsclepios shiranui(Esaki) (Hemiptera: Gerridae: Halobatinae)

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Terumi Ikawa ◽  
Yuichi Nozoe ◽  
Natsuko Yamashita ◽  
Namiko Nishimura ◽  
Satoshi Ohnoki ◽  
...  

Sea skatersHalobates matsumuraiEsaki andAsclepios shiranui(Esaki) are among the few marine insects found in Japan. For the past several decades, they have become rare in most localities and have now been designated as endangered by the government. In order to understand their adaptive strategies to the marine environment and to develop conservation measures, it is essential to know their life histories. We studied their lifecycles in Kujukushima Bay off the north coast of Kyushu (Japan) where they co-occurred in small coves along the jagged coast. They appeared to have more than one generation a year and to overwinter in the egg stage. Eggs ofH. matsumuraiwere laid on natural sandstones and man-made sandstone walls along the shore, mostly above the average sea level. The eggs had very hard shells, presumably adaptive to protect them from desiccation, solar radiation, and wave action, especially during the overwintering period.

Author(s):  
Cheryl Colopy

From a remote outpost of global warming, a summons crackles over a two-way radio several times a week: . . . Kathmandu, Tsho Rolpa! Babar Mahal, Tsho Rolpa! Kathmandu, Tsho Rolpa! Babar Mahal, Tsho Rolpa! . . . In a little brick building on the lip of a frigid gray lake fifteen thousand feet above sea level, Ram Bahadur Khadka tries to rouse someone at Nepal’s Department of Hydrology and Meteorology in the Babar Mahal district of Kathmandu far below. When he finally succeeds and a voice crackles back to him, he reads off a series of measurements: lake levels, amounts of precipitation. A father and a farmer, Ram Bahadur is up here at this frigid outpost because the world is getting warmer. He and two colleagues rotate duty; usually two of them live here at any given time, in unkempt bachelor quarters near the roof of the world. Mount Everest is three valleys to the east, only about twenty miles as the crow flies. The Tibetan plateau is just over the mountains to the north. The men stay for four months at a stretch before walking down several days to reach a road and board a bus to go home and visit their families. For the past six years each has received five thousand rupees per month from the government—about $70—for his labors. The cold, murky lake some fifty yards away from the post used to be solid ice. Called Tsho Rolpa, it’s at the bottom of the Trakarding Glacier on the border between Tibet and Nepal. The Trakarding has been receding since at least 1960, leaving the lake at its foot. It’s retreating about 200 feet each year. Tsho Rolpa was once just a pond atop the glacier. Now it’s half a kilometer wide and three and a half kilometers long; upward of a hundred million cubic meters of icy water are trapped behind a heap of rock the glacier deposited as it flowed down and then retreated. The Netherlands helped Nepal carve out a trench through that heap of rock to allow some of the lake’s water to drain into the Rolwaling River.


1988 ◽  
Vol 19 (2) ◽  
pp. 266-291 ◽  
Author(s):  
James L. Cobban

By the beginning of the twentieth century, Semarang was a major port city and administrative centre on Java. Attainment of this position was due partly to the expansion of its hinterland during the nineteenth century. This expansion was closely related to developments in the means of transportation and the consequent ability of plantation owners to bring the products of their plantations to the port for shipment to foreign markets. By the end of the century virtually the whole economic life of central Java focused upon Semarang. The city also exercised administrative functions in the Dutch colonial administration and generally had been responsible for Dutch interests in the middle and eastern parts of the island. The importance of Semarang as an administrative centre increased after 1906. In that year the government incorporated the city as an urban municipality (stadsgemeente). In 1914 it had consular representation from the United States, Belgium, Denmark, France, Great Britain, Italy, Norway, Germany, and Thailand. Subsequently, in 1926 it became the capital of the Province of Central Java under the terms of an administrative reform fostered by the colonial government at Batavia. Status as an urban municipality meant that local officials sitting on a city council would govern the domestic affairs of the city. The members of the city council at first were appointed from Batavia, subsequently some of them were elected by residents of the city. By the beginning of the twentieth century Semarang had enhanced its position as a major port on the north coast of the island of Java. It was one of the foremost cities of the Dutch East Indies, along with Batavia and Surabaya, a leading port and a centre of administration and trade. This article outlines the growth of the port of Semarang during the nineteenth century and discusses some of the conflict related to this growth over living conditions in parts of the city during the twentieth century, a conflict which smouldered for several decades among the government, members of the city council, and the non-European residents of the city, one which remained unresolved at the end of the colonial era.


1983 ◽  
Vol 73 (4) ◽  
pp. 453
Author(s):  
Alexander Melamid ◽  
Taiba A. Al-Asfour
Keyword(s):  

2018 ◽  
Vol 34 (1) ◽  
pp. 1-10
Author(s):  
Sukarman Kamuli ◽  
Basri Amin

Despite the government support for economic development in some coastal areas in Indonesia, the paradigm about women’s agency remains almost the same. This is because women are still marginalized. This paper focuses on looking at agency of women in managing their resources. This study proves that women are active agents in coastal areas of North Gorontalo. Specifically, in the seaweed production, empirical evidences show significantly that women's associations succeeded in gaining economic advantages, participatory leadership, and had adaptability towards changes in technology and seaweed market. Applying a qualitative research approach, this study illustrates a number of policy subjects, organizational patterns, regional opportunity, and actors that support the centrality of women’s organizational capabilities in the field of seaweed production in the north coast of Gorontalo. This study justifies the tendency in Gorontalo, and perhaps in other areas in Indonesia, that women groups have an economic reputation in the seaweed production because they are fully involved in all production processes.


1895 ◽  
Vol 2 (1) ◽  
pp. 13-20 ◽  
Author(s):  
Howard Fox
Keyword(s):  

Dinas Head is a promontory 4 miles west of Padstow, jutting out into the sea from Trevose Head, and separated from it by an isthmus about 100 feet above sea-level, which is washed clear of soil by the ground seas which sweep over it from the north. The headland is 165 feet above sea-level at its highest point, and is almost as broad from north to south as it is long from east to west. The base and foreshore of the headland appear to be entirely composed of greenstone containing much calcite. The microscope shows it to be probably an altered dolerite.


2011 ◽  
Vol 6 (1) ◽  
pp. 30
Author(s):  
Sutejo K. Widodo

Rice and fish could be complementing each other as human primary needs for nutrition. However, both these commodities have a history with the opposite. Although Java island is surrounded by the waters of the sea, in the past the population in meeting the needs of fish, mainly marine fish, mostly done by the fishermen who brought in fish catches from other areas or imported, in the form of salted fish and dried fish, since the Dutch colonial government and gradually began to set the political self-sufficient self-reliance in the 1960s. This article discusses the dynamics of policy on fishing in the north coast of Java, with a historical approach with a span of years 1900 to 2000.


Antiquity ◽  
2017 ◽  
Vol 91 (358) ◽  
pp. 1095-1097
Author(s):  
Hans Peeters

Over the past decade or so, the submerged prehistoric archaeology and landscapes in the area that is known to us today as the North Sea have received increasing attention from both archaeologists and earth scientists. For too long, this body of water was perceived as a socio-cultural obstacle between the prehistoric Continent and the British Isles, the rising sea level a threat to coastal settlers, and the North Sea floor itself an inaccessible submerged landscape. Notwithstanding the many pertinent and pervasive problems that the archaeology of the North Sea still needs to overcome, recent research has made clear that these rather uninspiring beliefs are misplaced.


2015 ◽  
Vol 28 (4) ◽  
pp. 1561-1577 ◽  
Author(s):  
Bo Qiu ◽  
Shuiming Chen ◽  
Lixin Wu ◽  
Shinichiro Kida

Abstract Regional sea level trend and variability in the Pacific Ocean have often been considered to be induced by low-frequency surface wind changes. This study demonstrates that significant sea level trend and variability can also be generated by eddy momentum flux forcing due to time-varying instability of the background oceanic circulation. Compared to the broad gyre-scale wind-forced variability, the eddy-forced sea level changes tend to have subgyre scales and, in the North Pacific Ocean, they are largely confined to the Kuroshio Extension region (30°–40°N, 140°–175°E) and the Subtropical Countercurrent (STCC) region (18°–28°N, 130°–175°E). Using a two-layer primitive equation model driven by the ECMWF wind stress data and the eddy momentum fluxes specified by the AVISO sea surface height anomaly data, the relative importance of the wind- and eddy-forced regional sea level trends in the past two decades is quantified. It is found that the increasing (decreasing) trend south (north) of the Kuroshio Extension is due to strengthening of the regional eddy forcing over the past two decades. On the other hand, the decreasing (increasing) sea level trend south (north) of the STCC is caused by the decadal weakening of the regional eddy momentum flux forcing. These decadal eddy momentum flux changes are caused by the background Kuroshio Extension and STCC changes in connection with the Pacific decadal oscillation (PDO) wind pattern shifting from a positive to a negative phase over the past two decades.


1954 ◽  
Vol 20 (2) ◽  
pp. 130-148 ◽  
Author(s):  
Louis M. Stumer

This Article is intended less as a descriptive piece on the archaeology of the Rimac Valley than it is as a single-valley application of various conclusions reached by Richard P. Schaedel in his Major Ceremonial and Population Centers in Northern Peru (1951). Schaedel, in a broad synthetic study of major ruins on the North Coast of Peru, comes to several interesting conclusions on the “urban revolution” in that region. The author, who was already engaged in a survey of the Rimac, with the focus on the coastal cultures from sea level to the 1000-meter line, felt impelled to shift the emphasis of his survey from straight description to a Central Coast application of Schaedel's North Coast findings. This was a fairly easy task, as the sites were already being analyzed both architecturally and ceramically.The Rimac, the “valley of Lima,” presents sufficient of both typical and atypical features of a Peruvian coastal valley to make the application of Schaedel's theories to a single valley at least fairly indicative of their validity for the entire Peruvian coast.


1979 ◽  
Vol 83 (3) ◽  
pp. 547-555 ◽  
Author(s):  
R. F. Sellers ◽  
E. P. J. Gibbs ◽  
K. A. J. Herniman ◽  
D. E. Pedgley ◽  
M. R. Tucker

Possible origins of an epidemic of bluetongue in Cyprus in August 1977 have been analysed. First outbreaks occurred simultaneously in the south-east of the Famagusta district and on the north coast of the Kyrenia district respectively. Although the epidemic was due to type 4, which had been responsible for the previous outbreak in 1969, no evidence of persistence of virus could be found. Imports of domestic animals in the past year were not implicated since the imported cattle were introduced only to the southern part and not to the northern part of the island. Easterly, north-easterly and northerly winds during the period 11–14 August could have brought infected midges at a height of 0.5–1.5 km from Syria and Turkey, and such a movement would fit well the dates of the first outbreaks (20–25 August). Temperatures at a height of 1.5 km were 20–25 °C and at 0.5 km 30–35 °C, and with wind speeds 10–20 km h−1 the distance from Turkey and Syria would have been covered in 5–20 h. It follows that, in addition to surface winds, winds at all levels warm enough for flight should be taken into account when the possibility of disease spread by windborne midges is being assessed.


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