Population genetics of tailor, Pomatomus saltatrix (Linnaeus) (Pisces: Pomatomidae) in Australia

1992 ◽  
Vol 43 (6) ◽  
pp. 1481 ◽  
Author(s):  
RK Nurthen ◽  
R Cameron ◽  
DA Briscoe
Keyword(s):  
Population Genetics ◽  
Gene Locus ◽  
East Coast ◽  
Eastern Coast ◽  
Western Coast ◽  
Allozyme Electrophoresis ◽  
Pomatomus Saltatrix ◽  
The West ◽  
Genetic Stock ◽  
Polymorphic Gene

Tailor, Pomatomus saltatrix, from the eastern coast of Australia were sampled and typed for nine polymorphic gene loci, using allozyme electrophoresis. Tailor were also sampled from the western coast but were typed for only six of the same nine gene loci. East-coast samples did not differ significantly from each other, apart from the frequency of one allele at one gene locus, and are hence considered as one genetic stock. The west-coast tailor differed significantly from the east-coast tailor at two of the six gene loci and can be considered as a separate stock.

Distribution of Tailor (Pomatomus saltatrix) Larvae along the Coast of New South Wales, Australia

1996 ◽  
Vol 47 (2) ◽  
pp. 331 ◽  
Author(s):  
AG Miskiewicz ◽  
BD Bruce ◽  
P Dixon
Keyword(s):  
Continental Shelf ◽  
Coastal Waters ◽  
East Coast ◽  
New South ◽  
New South Wales ◽  
Eastern Coast ◽  
Pomatomus Saltatrix ◽  
Outer Continental Shelf ◽  
Survey Period ◽  
South Wales

The distribution of tailor (Pomatomus saltatrix) larvae is described on the basis of the results of four plankton surveys undertaken in northern and central New South Wales (NSW) coastal waters. These comprised a single survey during May 1989 along the northern NSW coast and multiple surveys in January, March and May 1983 between Sydney and Brisbane. Pomatomus saltatrix larvae occurred throughout the survey period, with the highest abundances on the northern NSW coast. Most larvae were caught in mid and outer continental shelf waters at water temperatures of ≥22�C. The only known spawning locality for P. saltatrix is in the vicinity of Fraser Island in southern Queensland from August to October. The occurrence of larvae along the NSW coast from January to May indicates that the spawning season of P. saltatrix is more extensive than previously reported and that spawning occurs along the east coast of Australia in localities other than Fraser Island. Further surveys of larvae in southern Queensland and northern NSW waters, especially from August to December, are required to determine if P. saltatrix has one extended or two discrete spawning seasons along the eastern coast of Australia.

scholarly journals 4. Recent Observations on the direction of the Striæ on Rocks and Boulders.

1857 ◽  
Vol 3 ◽  
pp. 121-122
Author(s):  
James Smith
Keyword(s):  
East Coast ◽  
Western Coast ◽  
Present Position ◽  
The West ◽  
Moving Force ◽  
The North ◽  
Erratic Block

Mr Smith of Jordanhill next read a paper on the direction of the striae on rocks and boulders in the West of Scotland.It had generally been supposed that the cause, whatever it was, which lodged the erratic block beds in their present position had proceeded from the north and west.This was true with respect to the basin of the Clyde and the east coast of Scotland; but on the western coast of Argyllshire, at Loch Crinan and Appin he had observed that the strike side (stoss seite) of the rocks pointed to the east, and the lee side (lee seite) to the west, shewing that, in these cases, the direction of the moving force was from east to west.

scholarly journals THE PATTERN OF WAVE TRANSFORMATION USING RCPW ave MODEL AT BAU - BAU COAST, SOUTHEAST SULAWESI PROVINCE

2009 ◽  
Vol 1 (2) ◽  
Author(s):  
Baharuddin Baharuddin ◽  
John I Pariwono ◽  
I Wayan Nurjaya
Keyword(s):  
Coastal Waters ◽  
East Coast ◽  
Surf Zone ◽  
Wind Wave ◽  
Wave Transformation ◽  
Eastern Coast ◽  
Western Coast ◽  
East Side ◽  
Coastal Morphology ◽  
Wave Condition

<p>When wind-wave generated on deep water propagates into shallow water they will be transformed into several processes such as refraction, shoaling, reflection, diffraction, and finally collapsing. This research has objective to analyze the pattern of wave transformation which pro pagate into Bau-Bau coastal waters by using RCPWave Model as a numerical model solution to predict wave condition within the surf zone. The model showed that the wave transformation at Bau -Bau Coastal waters was influenced by coastal morphology and characteristic that was more open to the west (to the opensea) than to the east coast (bordered by Buton Strait). Wave transformation occurred from both sides, either from west or east side. When wave were broken at the western coast the wave high from west and east were 1.9 m and 0.5 respectively. At the eastern coast were 1.0 m and 0.7 m. The highest wave high occurred at head land or peninsula.</p> <p>Keywords: wave transformation, RCPWave, Bau-Bau Coast, refraction, shoaling,reflection, diffraction and collapsing</p>

THE PATTERN OF WAVE TRANSFORMATION USING RCPW ave MODEL AT BAU - BAU COAST, SOUTHEAST SULAWESI PROVINCE

2009 ◽  
Vol 1 (2) ◽  
Author(s):  
Baharuddin Baharuddin ◽  
John I Pariwono ◽  
I Wayan Nurjaya
Keyword(s):  
Coastal Waters ◽  
East Coast ◽  
Surf Zone ◽  
Wind Wave ◽  
Wave Transformation ◽  
Eastern Coast ◽  
Western Coast ◽  
East Side ◽  
Coastal Morphology ◽  
Wave Condition

When wind-wave generated on deep water propagates into shallow water they will be transformed into several processes such as refraction, shoaling, reflection, diffraction, and finally collapsing. This research has objective to analyze the pattern of wave transformation which pro pagate into Bau-Bau coastal waters by using RCPWave Model as a numerical model solution to predict wave condition within the surf zone. The model showed that the wave transformation at Bau -Bau Coastal waters was influenced by coastal morphology and characteristic that was more open to the west (to the opensea) than to the east coast (bordered by Buton Strait). Wave transformation occurred from both sides, either from west or east side. When wave were broken at the western coast the wave high from west and east were 1.9 m and 0.5 respectively. At the eastern coast were 1.0 m and 0.7 m. The highest wave high occurred at head land or peninsula. Keywords: wave transformation, RCPWave, Bau-Bau Coast, refraction, shoaling,reflection, diffraction and collapsing

scholarly journals MOPITT total column CO over the Indian Subcontinent: Spatial variability and long term trend

2014 ◽  
Vol XL-8 ◽  
pp. 323-327
Author(s):  
S. Srivastava
Keyword(s):  
East Coast ◽  
Indian Subcontinent ◽  
Eastern Coast ◽  
Coastal Regions ◽  
The West ◽  
Gangetic Plain ◽  
Co Concentration ◽  
Indo Gangetic Plain ◽  
Total Column ◽  
Co Concentrations

Total column carbon monoxide (CO) concentration obtained from MOPITT (Measurement Of Pollution In The Troposphere) have been analyzed over the Indian subcontinent for a period of March, 2000 to December, 2010. Average monthly variation of columnar CO is investigated over the eastern and western coasts of India (latitude > 18&deg;N). The columnar CO concentration is found to be larger over the east coast than the west coast. The higher columnar CO concentrations (2.3&ndash;2.8 x 1018 molec/cm<sup>2</sup>) occur during November to April months over both the coastal regions. The lower columnar CO concentrations (1.6&ndash;1.7 x 1018 molec/cm<sup>2</sup>) occur during July-August months over these coastal regions when air blows from the Bay of Bengal towards the east coast and from the Arabian Sea towards the west coast. The latitudinal variations of ten year averaged columnar CO are also investigated over the eastern and western coastlines of India (23.5&deg;N to 8.5&deg;N). The latitudinal gradient is stronger over the eastern coast (3.2 x 1016 molec/cm<sup>2</sup>/&deg;N) with respect to the western coast (8.6 x 1015 molec/cm<sup>2</sup>/&deg;N) due to injection of highly polluted air mass from the Indo-Gangetic Plain over the northern part of Bay of Bengal. In order to investigate the source of pollution, variation of columnar CO concentration over the 11 polluted cities situated in the Indo-Gangetic plain has been examined. Columnar CO concentrations are found to be significantly higher over the southeast Indo-Gangetic plain and show a linear decreasing tendency from southeast to northwest cities. The maximum columnar CO concentration is observed over Patna (~ 2.48 x 1018 molec/cm<sup>2</sup>) and minimum over Multan (~ 2.19 x 1018 molec/cm<sup>2</sup>). This indicates that south-eastern part of Indo-Gangetic plain is mainly contributing towards enhancement in columnar CO concentration over the eastern coast. Columnar CO concentration showed an increasing trend during 2000 to 2010 over all the 11 cities. This increasing tendency is stronger over the cities situated in the southeast part of Indo-Gangetic plain.

On the type locality of the steppe ribbon racer, Psammophis lineolatus (Brandt, 1838) (Serpentes: Lamprophiidae)

2020 ◽  
Vol 324 (2) ◽  
pp. 262-272
Author(s):  
I.V. Doronin ◽  
T.N. Dujsebayeva ◽  
K.M. Akhmedenov ◽  
A.G. Bakiev ◽  
K.N. Plakhov
Keyword(s):  
Caspian Sea ◽  
Type Specimen ◽  
Type Locality ◽  
Eastern Coast ◽  
Zoological Museum ◽  
Western Coast ◽  
The Caspian Sea ◽  
Original Species ◽  
Academy Of Sciences ◽  
Made In

The article specifies the type locality of the Steppe Ribbon Racer. The holotype Coluber (Taphrometopon) lineolatus Brandt, 1838 is stored in the reptile collection of the Zoological Institute of the Russian Academy of Sciences (ZISP No 2042). Literature sources provide different information about the type locality. A mistake has been made in the title of the work with the original species description: the western coast of the sea was indicated instead of the eastern one. The place of capture was indicated as “M. Caspium” (Caspian Sea) on the label and in the reptile inventory book of the Zoological Museum of the Academy of Sciences. The specimen was sent to the museum by G.S. Karelin. The “1842” indicated on the labels and in the inventory book cannot be the year of capture of the type specimen, just as the “1837” indicated by A.M. Nikolsky. In 1837, Karelin was in Saint Petersburg and in 1842 in Siberia. Most likely, 1837 is the year when the collection arrived at the Museum, and 1842 is the year when the information about the specimen was recorded in the inventory book (catalog) of the Zoological Museum of the Academy of Sciences. In our opinion, the holotype was caught in 1932. From Karelin’s travel notes of the expedition to the Caspian Sea in 1832, follows that the snake was recorded in two regions adjacent to the eastern coast of the Caspian Sea – Ungoza Mountain (“Mangyshlak Mountains”) and site of the Western Chink of Ustyurt between Zhamanairakty and Kyzyltas Mountains (inclusive) on the northeast coast of Kaydak Sor (“Misty Mountains”). In our article, Karelin’s route to the northeastern coast of the Caspian Sea in 1832 and photographs of these localities are given. The type locality of Psammophis lineolatus (Brandt, 1838) should be restricted to the Mangystau Region of the Kazakhstan: Ungoza Mountain south of Sarytash Gulf, Mangystau (Mangyshlak) Penninsula (44°26´ N, 51°12´ E).

scholarly journals Evidence of Unknown Paleo-Tsunami Events along the Alas Strait, West Sumbawa, Indonesia

Geosciences ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 46
Author(s):  
Bachtiar W. Mutaqin ◽  
Franck Lavigne ◽  
Patrick Wassmer ◽  
Martine Trautmann ◽  
Puncak Joyontono ◽  
...  
Keyword(s):  
Radiocarbon Dating ◽  
Pyroclastic Flows ◽  
Western Coast ◽  
Eastern Shore ◽  
Tsunami Deposits ◽  
The West ◽  
Marine Deposits ◽  
Sedimentary Records ◽  
The North ◽  
Large Earthquakes

Indonesia is exposed to earthquakes, volcanic activities, and associated tsunamis. This is particularly the case for Lombok and Sumbawa Islands in West Nusa Tenggara, where evidence of tsunamis is frequently observed in its coastal sedimentary record. If the 1815 CE Tambora eruption on Sumbawa Island generated a tsunami with well-identified traces on the surrounding islands, little is known about the consequences of the 1257 CE tremendous eruption of Samalas on the neighboring islands, and especially about the possible tsunamis generated in reason of a paucity of research on coastal sedimentary records in this area. However, on Lombok Island, the eruption of the Samalas volcano produced significant volumes of pyroclastic flows that entered the sea in the North and East of the island. These phenomena must have produced a tsunami that left their traces, especially on Sumbawa Island, whose western coastline is only 14 km away from Lombok’s eastern shore. Therefore, the main goal of this study is to investigate, find evidence, and determine the age of marine-origin sediments along the shore of the Alas Strait, Indonesia. We collected and analyzed samples of coral and seashells from marine deposits identified along the west coast of Sumbawa, i.e., in Belang Island and abandoned fishponds in Kiantar Village, in order to identify the sources and the occurrence period of these deposits events. Based on the radiocarbon dating of coral and seashell samples, we concluded that none of the identified marine deposits along the western coast of Sumbawa could be related chronologically to the 1257 CE eruption of Samalas. However, possible tsunami deposits located in Belang Island and abandoned fishponds in Kiantar Village yielded 4th century CE, 9th century CE, and 17th century CE. We also conclude that past large earthquakes triggered these tsunamis since no known volcanic eruption occurred near the Alas Strait at that time that may have triggered a tsunami.

scholarly journals ENSO and Wintertime Extreme Precipitation Events over the Contiguous United States

2008 ◽  
Vol 21 (1) ◽  
pp. 22-39 ◽  
Author(s):  
Siegfried D. Schubert ◽  
Yehui Chang ◽  
Max J. Suarez ◽  
Philip J. Pegion
Keyword(s):  
United States ◽  
West Coast ◽  
Extreme Precipitation ◽  
East Coast ◽  
Daily Precipitation ◽  
Precipitation Variability ◽  
The West ◽  
Extreme Precipitation Events ◽  
The Impact ◽  
Precipitation Events

Abstract In this study the authors examine the impact of El Niño–Southern Oscillation (ENSO) on precipitation events over the continental United States using 49 winters (1949/50–1997/98) of daily precipitation observations and NCEP–NCAR reanalyses. The results are compared with those from an ensemble of nine atmospheric general circulation model (AGCM) simulations forced with observed SST for the same time period. Empirical orthogonal functions (EOFs) of the daily precipitation fields together with compositing techniques are used to identify and characterize the weather systems that dominate the winter precipitation variability. The time series of the principal components (PCs) associated with the leading EOFs are analyzed using generalized extreme value (GEV) distributions to quantify the impact of ENSO on the intensity of extreme precipitation events. The six leading EOFs of the observations are associated with major winter storm systems and account for more than 50% of the daily precipitation variability along the West Coast and over much of the eastern part of the country. Two of the leading EOFs (designated GC for Gulf Coast and EC for East Coast) together represent cyclones that develop in the Gulf of Mexico and occasionally move and/or redevelop along the East Coast producing large amounts of precipitation over much of the southern and eastern United States. Three of the leading EOFs represent storms that hit different sections of the West Coast (designated SW for Southwest coast, WC for the central West Coast, and NW for northwest coast), while another represents storms that affect the Midwest (designated by MW). The winter maxima of several of the leading PCs are significantly impacted by ENSO such that extreme GC, EC, and SW storms that occur on average only once every 20 years (20-yr storms) would occur on average in half that time under sustained El Niño conditions. In contrast, under La Niña conditions, 20-yr GC and EC storms would occur on average about once in 30 years, while there is little impact of La Niña on the intensity of the SW storms. The leading EOFs from the model simulations and their connections to ENSO are for the most part quite realistic. The model, in particular, does very well in simulating the impact of ENSO on the intensity of EC and GC storms. The main model discrepancies are the lack of SW storms and an overall underestimate of the daily precipitation variance.

Growth and movement of the South African abalone Haliotis midae: A reassessment

1995 ◽  
Vol 46 (3) ◽  
pp. 583 ◽  
Author(s):  
RJQ Tarr
Keyword(s):  
South African ◽  
Growth Rates ◽  
Growth Parameters ◽  
Eastern Coast ◽  
Island Population ◽  
Western Coast ◽  
Eastern Cape ◽  
The South ◽  
Significant Difference ◽  
Haliotis Midae

Growth rates of a number of Haliotis midae populations around the South African coast were studied by means of tagging. These populations ranged from the cool waters of the western coast to the more temperate environment of the eastern Cape. Standard von Bertalanffy growth curves were fitted and growth parameters derived. These ranged from 0.19 to 0.25 for K, the average rate at which L∞ is approached, and from 156 to 173 for L∞, the average theoretical maximum length. These indicate far higher growth rates than were previously published for this commercially fished species, and the reasons for this difference are discussed. The expectation that growth rates would be fastest in the warmer eastern Cape waters was not realized, there being no significant difference in growth between the Bird Island population on the eastern coast and the Robben Island population on the western coast. These new growth parameters indicate that H. midae in the commercial fishery grounds is attaining sexual maturity some four years earlier, and the minimum legal size some five years earlier, than previously considered. This has considerable significance for modelling studies presently underway. Movement of a small population of adult H. midae was studied over a three-year period, after which 47% of the original abalone were still present on the study site. Of these, 81.5% still occupied exactly the same position on the rocks. This indicates that H. midae that have located an optimum habitat, and that are not disturbed, tend not to move.

Regional tsunami hazard maps for the Far East coast of the Russian Federation built in the framework of the PTHA methodology

2019 ◽  
pp. 55-72
Author(s):  
Вячеслав Константинович Гусяков ◽  
Владимир Андреевич Кихтенко ◽  
Леонид Борисович Чубаров ◽  
Юрий Иванович Шокин
Keyword(s):  
Russian Federation ◽  
Hazard Assessment ◽  
East Coast ◽  
Far East ◽  
Tsunami Hazard ◽  
Eastern Coast ◽  
The Far East ◽  
Tsunami Hazard Assessment ◽  
The Russian Federation ◽  
Probabilistic Tsunami Hazard Assessment

В работе идет речь о реализации методики вероятностного цунамирайонирования побережья, известной под названием PTHA (Probabilistic Tsunami Hazard Assessment), для создания обзорных карт цунамиопасности дальневосточного побережья России. Обсуждаются методологические основы такого подхода, проблемы построения сейсмотектонических моделей основных цунамигенных зон, численные методики получения расчетных каталогов высот волн на побережье. Приведены примеры обзорных карт для различных повторяемостей, построенных с применением методики PTHA и представленных с помощью созданного веб-приложения WTMap. Упоминаются также некоторые проблемы применения методики PTHA, связанные как с недостаточностью данных наблюдений, так и со сложностью выполнения большого объема сценарного численного моделирования. The article describes the results of the implementation of the PTHA (Probabilistic Tsunami Hazard Assessment) methodology for creating the overview maps of tsunami hazard for the Far East coast of the Russian Federation. Such maps show the characteristics of the catastrophic impact of tsunami waves on the coast and the probability of their exceeding in a given period of time. The methodological basis of the PTHA approach to the assessment of tsunami hazard, the problems of constructing seismotectonic models of the main tsunamigenic zones, mathematical models and algorithms for calculating probability estimates of tsunami danger are discussed. The version of the PTHA methodology outlined in the article is implemented as a “WTmap” Web-application that has an access to the entire observational information related to coastal tsunami zoning and software packages used. The application allows to obtain the estimates of the expected tsunami heights and their recurrence estimates and to map them on specific parts of the Far Eastern coast of the Russian Federation. The obtained estimates can be quickly recalculated when replacing the observational catalogs with more complete and reliable ones, with the addition of new, previously absent events or the revision of their parameters, as well as the results of new scenario calculations. Examples of overview maps for various recurrence intervals, constructed using the PTHA methodology and presented using the “WTMap” application, are given. Some problems of using the PTHA methodology related to the lack of available observational data and to the complexity of performing a large amount of scenario simulations are also discussed.

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