Search

Publications matching your search query

Results 476 to 500 of 893

Demography of male reproductive queues in cooperatively breeding superb fairy-wrens Malurus cyaneus Journal of Animal Ecology, 2008 (Ref: 13289)
Category 1: Peer-reviewed literature

1. Subordinate helpers in cooperative societies may gain both immediate and future benefits, including paternity and territorial inheritance. However, if such opportunities correlate with rank … in the queue, it is unclear why such queues should be stable. 2.

Effects of simulated light regimes on maturity and body composition of Antarctic krill, Euphausia superba Marine Biology, 2008 (Ref: 13274)
Category 1: Peer-reviewed literature

The eVect of diVerent light regimes on the … development of sexual maturity and body composition … (carbon, nitrogen, lipid and protein) of Antarctic krill, Euphausia … superba, was studied over 12 weeks under laboratory … conditions.

Southern Ocean atmospheric chemistry signals since the LGM as recorded in the coastal Law Dome ice core: Comparisons with the inland Dome C ice core record XVII INQUA Congress 2007, Cairns, 28 July - 3 August 2007, 2007 (Ref: 13254)
Category 3: Conference paper

Law Dome is situated in East Antarctica, and is a relatively high elevation … coastal site, with an ice core record spanning approximately 80,000 years. It … receives high snow accumulation and is situated on the most northerly … coastline in Antarctica (apart from the tip of the Peninsula)…

Observations of Antarctic fast-ice thickness AGU (Fall 2007) Meeting, 2007 (Ref: 13237)
Authors:
Category 3: Abstract

Fast ice makes up about 10 % by area (or 14 - 20 % by volume) of the total … Antarctic pack. Its growth is largely determined by thermodynamics processes, which makes it a valuable tool to monitor changes in the polar climate system. Time series of fast-ice properties…

The 8200 B.P. climate event in the Southern Hemisphere Antarctic Climate and Ecosystems CRC Symposium, Hobart, 2007, 2007 (Ref: 13162)
Category 3: Conference paper

The event that occurred approximately 8200 years ago is the largest excursion in climate since the beginning of the Holocene. In this event we observe the climatic response to a perturbation which provides a probe with which to investigate the stability of interglacial climate.

High Resolution Ice Core Records of Cosmogenic 10Be from Antarctica and Greenland for Examination of Past Solar Variability Antarctic Climate and Ecosystems CRC Symposium, Hobart, 2007, 2007 (Ref: 13156)
Category 3: Conference paper

Quantifying the contribution of solar variability to past and present climate change has been an important and controversial aspect of climate research. 10Be records from polar ice have played a key role in extending solar activity reconstructions beyond the period of direct observations of the sun.

Determination of ICME geometry and orientation from ground based observations of galactic cosmic rays Proceedings of the 30th International Cosmic Ray Conference, Mérida, Mexico, 2007 (Ref: 13186)
Category 3: Abstract

We have developed a method for determining ICME (Interplanetary coronal mass ejection) geometry from galactic cosmic ray data recorded by the ground-based muon detector network. The … cosmic ray density depression inside the ICME, which is the cause of a Forbush decrease…

Male krill grow fast and die young Marine Ecology Progress Series, 2007 (Ref: 13110)
Category 1: Peer-reviewed literature

The size-differentiated sex ratio (proportion of males, PM) of Antarctic krill Euphausia … superba was examined with an extensive dataset derived from scientific surveys in the Indian Ocean … sector and the southwest Atlantic sector, and from the krill fishery in the Southern Ocean.

The potential of blue-dyed bait to reduce seabird bycatch in pelagic longline fisheries Agreement on the Conservation of Albatrosses and Petrels. Third Meeting of Advisory Committee, Valdivia, Chile 19-22 June 2007, 2007 (Ref: 13014)
Category 2: International meeting papers

Blue-dyed bait is a seabird bycatch mitigation technique which is assumed to reduce the … contrast between the bait and the ocean background making baits visually cryptic to seabirds. We tested this assumption in two ways. First, using measured spectral profiles of blue-dyed … baits (fish and squid)…

A nonparametric algorithm to model movement between polygon subdomains in a spatially explicit ecosystem model. Ecological Modelling, 2007 (Ref: 12652)
Category 1: Peer-reviewed literature

Many modern spatially explicit ecosystem models use modelling subdomains of different … shape and size (‘polygons’) to resolve space, and movement of biomass between them forms … an important part of the modelling effort. In marine applications…

Analog conversion for FPGA implementation of the TIGER transmitter using a 14 bit DAC Proceedings of the Second IEEE International Workshop on Electronic Design Test and Applications, 2004 (Ref: 13007)
Category 3: Conference paper

FPGA is a potential medium for DSP implementation of direct conversion transmitters and receivers. However analog interface cannot be ruled out since amplification and other tasks are still in the analog domain. In a previous work…

Quantization effects in digital upconversion and digital beam forming for TIGER Radar System WARS04 (Workshop on the Applications of Radio Science) Proceedings, National Committee for Radio Science, Australian Academy of Science, Paper G11, 2004 (Ref: 13006)
Category 3: Conference paper

Quantization is a representation of data samples with a certain number of bits per sample after rounding to a suitable … level of precision. Quantization errors in a Digital Signal Processing (DSP) system can be introduced from three … sources; one source is input quantization…

An international integrated research program in South of Brazil for observations of solar-terrestrial interactions IUGG XXIV 2007, Perugia, Italy July 2-13, 2007, 2007 (Ref: 12999)
Authors:
Category 3: Abstract

This overview describes an international scientific cooperation between Brazil, USA and Japan, for an … integrated research program developed in south of Brazil for observations of solar-terrestrial interactions … and geospace.

Towards a synthesis of substorm electrodynamics: HF radar and auroral observations Annales Geophysicae, 2006 (Ref: 13004)
Category 1: Peer-reviewed literature

At 08:35 UT on 21 November 2004, the onset of … an interval of substorm activity was captured in the southern … hemisphere by the Far UltraViolet (FUV) instrument on … board the IMAGE spacecraft. This was accompanied by … the onset of Pi2 activity and subsequent magnetic bays…

Combining DNA and morphological analyses of faecal samples improves insight into trophic interactions: a case study using a generalist predator Marine Biology, 2007 (Ref: 12997)
Category 1: Peer-reviewed literature

Abstract The diet of pinnipeds is most commonly … inferred from morphologically diagnostic remains of prey … in their scats. Although this method can generate quantitative … estimates of diet simply, important prey types may not … always be detected.

To determine the proportion of Australian shy albatrosses (Thalassarche cauta) killed in pelagic longline and trawl fisheries Agreement on the Conservation of Albatrosses and Petrels. Third Meeting of Advisory Committee, Valdivia, Chile 19-22 June 2007 AC3 Inf19, 2007 (Ref: 13015)
Category 2: International meeting papers

Pelagic longline and trawl fisheries are known to kill large numbers of albatrosses worldwide. However, the impact on individual species and populations has rarely been assessed, often … because many albatross species are difficult to identify. Shy albatrosses (Thalassarche … cauta)…

Using broadband erythemal UV instruments to measure relative irradiance Journal of Geophysical Research, 2002 (Ref: 12989)
Category 1: Peer-reviewed literature

1] This study examines the accuracy of the model 501A UV biometer in taking … measurements relative to a predetermined background condition. The UVSPEC model … with the discrete ordinates radiative transfer (DISORT)…

A novel QuikSCAT dual polarization based algorithm for delineation of sea ice and sea ice edge over the southern polar ocean International Workshop on Antarctic Sea Ice Thickness. Program and Abstracts. Hobart, Australia 5-7 July, 2006, 2006 (Ref: 12982)
Category 3: Abstract

Fan-Beam and Pencil-Beam Radar Scaterrometers on many satellites in polar orbits, e.g. ERS-1/2, ADEOS-1/2 and QuikSCAT, have been designed primarily for estimation of vector winds over the … global oceans. However, these scatterometers…

CliC: the crysosphere and climate project International Workshop on Antarctic Sea Ice Thickness. Program and Abstracts. Hobart, Australia 5-7 July 2006, 2006 (Ref: 12973)
Authors:
Category 3: Abstract

The Cryosphere and Climate Project (CliC) c~-ordinates climate activities related to all … parts of the earth's cryosphere. This includes sea ice, snow, ice shelves, ice bergs, lake ice, and permafrost. This talk will give a brief overview of the CliC project…

on