scholarly journals The geographic distribution of reef and oceanic manta rays in the south-east Indian and south-west Pacific Oceans

2019 ◽  
Author(s):  
Amelia J. Armstrong ◽  
Asia O. Armstrong ◽  
Michael B. Bennett ◽  
Frazer McGregor ◽  
Kátya G. Abrantes ◽  
...  
Keyword(s):  
Coastal Waters ◽  
Future Research ◽  
The South ◽  
West Pacific ◽  
East Indian ◽  
South West ◽  
The Pacific ◽  
Warm Temperate ◽  
Manta Ray ◽  
Reef Manta Ray

AbstractThe reef manta ray,Mobula alfredi, occurs in tropical and warm temperate coastal waters, and around islands and reefs in the Pacific and Indian Oceans. Published records that relate to the distribution ofM. alfrediin the south-east Indian and south-west Pacific Oceans are largely restricted to locations where there is a focus on manta ray ecotourism, with little information from elsewhere. Even less is known about the circumglobally distributed oceanic manta ray,Mobula birostris, for which there are few published sighting records. We collatedn =11,703 sighting records from Australian waters and offshore territories forM. alfredisourced from scientific image databases (n= 10,715), aerial surveys (n= 375) and online reports (n= 613). From collated records, we confirm that the species shows an uninterrupted distribution within Australian coastal waters north of 26°S on the west coast to 31°S on the east coast, with a southernmost record at 34°S. Confirmed locations forM. birostrisencompass a latitudinal range of 10-40°S. Records from more southerly locations relate to warm-water events. Sightings ofM. birostriswere rare, but were confirmed at several geographically separate locations, probably reflecting its preference for offshore waters. The study clarifies the occurrence and range of each species within coastal waters of the south-east Indian and south-west Pacific Oceans, and highlights regions in northern Australia that are of specific interest for future research into possible movements of individuals between international marine jurisdictions.

scholarly journals REVIEW: Pactok: How the Pacific covers 'nius' on the internet

1996 ◽  
Vol 3 (2) ◽  
pp. 195-197
Author(s):  
Christine Fogg
Keyword(s):  
New Venture ◽  
The Internet ◽  
Pacific Region ◽  
Virtual Library ◽  
The South ◽  
West Pacific ◽  
South West ◽  
The Pacific ◽  
On Line

Review of Pactok's Pacific Talk virtual library. Now a new venture by the Pactok organisation has created on-line access to locally produced news from the South-West Pacific region.   

Some Features of Organic Phosphorus Distribution in the South-East Indian and South-West Pacific Oceans

1963 ◽  
Vol 14 (2) ◽  
pp. 119 ◽  
Author(s):  
DJ Rochford
Keyword(s):  
Organic Phosphorus ◽  
North Equatorial Current ◽  
The South ◽  
Southern Boundary ◽  
West Pacific ◽  
East Indian ◽  
South West ◽  
Equatorial Current ◽  
The Antarctic ◽  
Counter Current

Concentrations of organic phosphorus significantly different from zero (0.10-0.38 �g-atom/l) have been found at most depths in a series of stations in the south-east Indian and south-west Pacific Oceans. For three meridional sections of the central and west Pacific and east Indian Oceans mean concentrations of organic phosphorus in the 0-200 m layer were found to be maximal (0.20-0.38�g- atom/l) along the southern boundary of the South Equatorial Current, along the Equatorial Divergence, and within the boundary of the Counter Current and North Equatorial Current. South of 30�S. to about 40�S. another maximum was found which could not be associated with marked current movements. Pronounced maxima were also found in the vertical profiles of organic phosphorus. These sometimes occurred at the same depth as major hydrological core layers. The most consistent agreement in depth was found between the Antarctic intermediate salinity minimum and an intermediate depth organic phosphorus maximum around 1000 m. At 41% of stations examined these two layers were found at the same depth. At several locations the depths of the maxima in organic phosphorus varied in the same direction and at the same rate as the major hydrological layers during one year's observations.

The Recalculation of Marine Chlorophyll Concentrations with Special Reference to Australian Waters

1978 ◽  
Vol 29 (4) ◽  
pp. 409 ◽  
Keyword(s):  
Special Reference ◽  
Chlorophyll A ◽  
Marine Algae ◽  
Productivity Index ◽  
The South ◽  
West Pacific ◽  
East Indian ◽  
West Pacific Ocean ◽  
South West ◽  
Chlorophyll Concentrations

Matrices are developed in order to convert published chlorophyll concentrations to values which would have been obtained had correct spectrophotometric equations been used. The main result is to decrease chlorophyll a values by as much as 23 % and chlorophyll a values by as much as 78 %. Corrected average values are given for the South-East Indian and South-West Pacific Oceans. Corrected values are given of the productivity index of several regions in the South-West Pacific Ocean. Some published values for the chlorophyll content of marine algae are corrected.

Distribution of the endangered Pacific sheathtail bat Emballonura semicaudata.

2002 ◽  
Vol 24 (2) ◽  
pp. 209 ◽  
Author(s):  
KM Helgen ◽  
TF Flannery
Keyword(s):  
Twentieth Century ◽  
First Record ◽  
Geographic Range ◽  
The South ◽  
Mammal Species ◽  
West Pacific ◽  
South West ◽  
The Pacific ◽  
Western Samoa

The Pacific sheathtail bat (Emballonura semicaudata) is one of few mammal species widely distributed in the south-west Pacific. However in many island groups its distribution and abundance remain uncertain and these patterns are obscured by the ongoing decline of many populations. Here we verify the (formerly disputed) presence of this bat in Vanuatu, provide the first record from the largest island in Samoa (Savai`i, Western Samoa), and review the known distribution of the species across the Pacific. A number of sources point to a precipitous twentieth-century decline of this species over most of its geographic range.

To the Jungle Shore

2019 ◽  
pp. 171-201
Author(s):  
Peter J. Dean
Keyword(s):  
United States ◽  
Pacific War ◽  
The South ◽  
West Pacific ◽  
South West ◽  
The Pacific ◽  
Australian Experience ◽  
Amphibious Warfare ◽  
Maritime Strategy ◽  
Pacific Area

Amphibious warfare was critical to the success of Allied forces in the South West Pacific Area (SWPA) during the Pacific War. However, at the beginning of the war both the Australian and United States forces in the SWPA had little knowledge, expertise, or experience in this form of warfare. This chapter by Peter J. Dean traces the development of amphibious warfare in the SWPA through organization, training, tactics, doctrine, and operations. While focusing on the Australian experience and highlighting the evolution of capabilities between 1942-45 through an analysis of the assaults on Lae (1943) and Balikpapan (1945), it contextualizes this experience within General Douglas MacArthur's maritime strategy and the friction inherent in combined amphibious operations in this theater. The chapter highlights the evolution of the Australian Army from a force almost totally unfamiliar with the practice of amphibious operations to one which, in combination with its United States coalition partner, becomes a practitioner par excellence in this form of warfare.

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