scholarly journals The zooplankton prey field for rock lobster phyllosoma larvae in relation to oceanographic features of the south-eastern Indian Ocean

2014 ◽  
Vol 36 (4) ◽  
pp. 1003-1016 ◽  
Author(s):  
Christin Säwström ◽  
Lynnath E. Beckley ◽  
Megan I. Saunders ◽  
Peter A. Thompson ◽  
Anya M. Waite
Keyword(s):  
Indian Ocean ◽  
Eastern Indian Ocean ◽  
Rock Lobster ◽  
The South ◽  
South Eastern ◽  
Phyllosoma Larvae ◽  
Zooplankton Prey

Distribution and Dispersal of the Phyllosoma Larvae of the Western rock Lobster, Panulirus cygnus, in the South-eastern Indian Ocean

1979 ◽  
Vol 30 (6) ◽  
pp. 773 ◽  
Author(s):  
BF Phillips ◽  
PA Brown ◽  
DW Rimmer ◽  
DD Reid
Keyword(s):  
Indian Ocean ◽  
Continental Shelf ◽  
Average Length ◽  
Eastern Indian Ocean ◽  
Rock Lobster ◽  
The South ◽  
South Eastern ◽  
Phyllosoma Larvae ◽  
Panulirus Cygnus ◽  
One Year

Data on the phyllosoma larvae of P. cygnus caught on seven cruises carried out between April 1976 and January 1977 off the west coast of Australia are presented and discussed. The studies were undertaken to determine the length of the plankton cycle, the distribution of the phyllosoma in the south-eastern Indian Ocean and the extent of the offshore dispersal. Analyses showed the average length of the planktonic life to be less than one year and probably between 9 and 11 months. After hatching most early phyllosoma were transported offshore. Few larvae remained on or near the continental shelf. The maximum westward extent of the phyllosoma distribution of P. cygnus was not determined because significant numbers of phyllosoma were still found as far offshore as 99� 001E. (1500 km offshore), the furthest station sampled. The phyllosoma were distributed over an extensive area of the south-eastern Indian Ocean, and there were few stations beyond the continental shelf between 24� 30'S. and 35� 00'S., from 99� 00'E. to 115� 00'E., during midwinter, at which phyllosoma were not caught. The highest densities of mid-and late-stage phyllosoma occurred between 111� 00' E. and 104� 00' E. (between 375 and 1030 km offshore), at 29� 30'S. The area of greatest abundance was due west of the approximate centre of the adult distribution on the coast. The significance of the circulation of the south-eastern Indian Ocean in the transport of the larvae is discussed.

Observations of warming on the Western Australian continental shelf

2007 ◽  
Vol 58 (10) ◽  
pp. 914 ◽  
Author(s):  
Alan Pearce ◽  
Ming Feng
Keyword(s):  
Indian Ocean ◽  
Continental Shelf ◽  
Southern Oscillation ◽  
Warming Trend ◽  
Eastern Indian Ocean ◽  
The South ◽  
Leeuwin Current ◽  
South Eastern ◽  
The Past ◽  
Western Australian

Global temperature datasets indicate a warming trend in the south-eastern Indian Ocean of ~0.02°C year–1. This is supported by in situ temperature measurements at a coastal monitoring station on the Western Australian continental shelf that have shown a mean temperature rise of 0.013°C year–1 since 1951, corresponding to ~0.6°C over the past 5 decades. Measurements from three other shallow stations between 1985 and 2004 indicated warming trends of 0.026–0.034°C year–1. It is suggested that enhanced air–sea heat flux into the south-eastern Indian Ocean may be a key factor in the rising temperature trend. There has also been a steady rise in salinity over the past half-century. At interannual scales, coherent temperature variability at the various stations indicates that larger-scale processes are influencing the shelf waters and are linked with El Niño/Southern Oscillation (ENSO)-related events in coastal sea level and hence the Leeuwin Current.

scholarly journals Reduction of the Powerful Greenhouse Gas N2O in the South-Eastern Indian Ocean

PLoS ONE ◽  
2016 ◽  
Vol 11 (1) ◽  
pp. e0145996 ◽  
Author(s):  
Eric J. Raes ◽  
Levente Bodrossy ◽  
Jodie Van de Kamp ◽  
Bronwyn Holmes ◽  
Nick Hardman-Mountford ◽  
...  
Keyword(s):  
Indian Ocean ◽  
Greenhouse Gas ◽  
Eastern Indian Ocean ◽  
The South ◽  
South Eastern

Geopotential Topographies and Associated Circulation in the South-Eastern Indian Ocean

1962 ◽  
Vol 13 (1) ◽  
pp. 1 ◽  
Author(s):  
K Wyrtki
Keyword(s):  
Indian Ocean ◽  
Internal Waves ◽  
Eastern Indian Ocean ◽  
Surface Currents ◽  
The South ◽  
The West ◽  
South Eastern ◽  
South West ◽  
Surface Circulation ◽  
Current Systems

Geopotential topographies of the surface and several subsurface depths are drawn from the observations on three cruises of H.M.A.S. Diamantina in the waters to the west and south of Australia in 1959 and 1960. The associated circulation is discussed. Surface circulation is found to be in general agreement with the observed surface currents. The subsurface flow between 300 and 1200 m depth indicates an entry of water from the south across 32� S. which turns to the west south of 20� S. Transports in certain current systems and eddies are calculated. The importance of internal waves in the south-west of the region, having amplitudes of more than 100 m, is discussed.

scholarly journals Song variation of the South Eastern Indian Ocean pygmy blue whale population in the Perth Canyon, Western Australia

PLoS ONE ◽  
2019 ◽  
Vol 14 (1) ◽  
pp. e0208619 ◽  
Author(s):  
Capri D. Jolliffe ◽  
Robert D. McCauley ◽  
Alexander N. Gavrilov ◽  
K. Curt S. Jenner ◽  
Micheline-Nicole M. Jenner ◽  
...  
Keyword(s):  
Indian Ocean ◽  
Western Australia ◽  
Eastern Indian Ocean ◽  
The South ◽  
Blue Whale ◽  
South Eastern ◽  
Song Variation

Description, distribution and abundance of late larval stages of the Scyllaridae (slipper lobsters) in the south-eastern Indian Ocean

1981 ◽  
Vol 32 (3) ◽  
pp. 417 ◽  
Author(s):  
BF Phillips ◽  
PA Brown ◽  
DW Rimmer ◽  
SJ Braine
Keyword(s):  
Indian Ocean ◽  
Early Stage ◽  
Southern Indian Ocean ◽  
Eastern Indian Ocean ◽  
Undescribed Species ◽  
The South ◽  
Larval Stages ◽  
South Eastern ◽  
Late Stages ◽  
Western Australian

Plankton samples from the south-eastern Indian Ocean between 25�30's. and 35�00'S. and from the Western Australian coast out to 99� 00'E., showed the presence of several species in three genera of the Scyllaridae; Scyllarides sp. a; Scyllarus demani; Scyllarus bicuspidatus; Scyllarus spp. a, b, and c; Ibacus peronii and Ibacus sp, a. The final (gilled) phyllosoma and nisto stages of previously undescribed species are described. A generic key to the final phyllosoma of the Palinuridae, Scyllaridae and Synaxidae recorded from the southern Indian Ocean is presented. The distribution of the catches of the phyllosoma of Scyllarus bicuspidatus, Scyllarus sp. b, Ibacus peronii and Scyllarides sp. a and data on the seasonal catches of all scyllarid species are presented. The phyllosoma of S. bicuspidatus undergo diel migrations. Early-stage densities peak at depths of 40-80 m during the day, and mid and late stages peak at 80-100 m. At night the early stages are found at the surface, independent of moonlight intensity. Mid and late stages peak at the surface only on moonless nights. On moonlit nights the density of mid and late stages peak at 15-25 m depth.

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