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Now showing items 21-40 of 61

Seasonal patterns of fine-root productivity and turnover in a tropical savanna of northern Australia

Chen Xiaoyong; Eamus Derek; Hutley Lindsay (Cambridge University Press, 2004)
Glycosidase Activity In The Excretory-secretory Products Of The Liver Fluke, Fasciola Hepatica

Irwin J; Morrissey P; Ryan J; Walshe A; O'Neill Sandra; Carrington S; Matthews E; Fitzpatrick E; Mulcahy Grace; Corfield A; Dalton John (Cambridge Univ Press, 2004)

Fasciola hepatica secretes proteolytic enzymes and other molecules that are essential for host penetration and migration. This mixture may include enzymes required for the degradation of supramucosal gels, which defend ...
Simulation of the stomatal conductance of winter wheat in response to light temperature and CO2 changes

Yu Qiang; Zhang Yongqiang; Liu Yunfen; Shi Peili (Oxford University Press, 2004)

Background and Aims The stomata are a key channel of the water cycle in ecosystems, and are constrained by both physiological and environmental elements. The aim of this study was to parameterize stomatal conductance by ...
Population abundance estimates of the New Zealand geoduck clam, Panopea zelandica, using north american methodology: Is the technology transferable?

Gribben Paul; Helson Jeremy; Millar Russell (National Shellfisheries Association, 2004)

This study investigates the applicability of methods used to describe patterns of distribution, and estimates of density and biomass of the Pacific geoduck clam, Panopea abrupta, from western North America for populations ...
Ontogeny of energy allocation reveals selective pressure promoting risk-taking behaviour in young fish cohorts

Biro Peter; Post John; Abrahams Mark (Royal Society, 2005)

Given limited food, prey fishes in a temperate climate must take risks to acquire sufficient reserves for winter and/or to outgrow vulnerability to predation. However, how can we distinguish which selective pressure promotes ...
Proteomic analysis of the excretory-secretory proteins of the Trichinella spiralis L1 larva, a nematode parasite of skeletal muscle.

Robinson Mark; Connolly Bernadette (John Wiley & Sons Inc, 2005)

Trichinella spiralis is an intracellular nematode parasite of mammalian skeletal muscle. Infection of the muscle cell leads to the formation of a host-parasite complex that results in profound alterations to the host cell ...
Assessing the environmental impacts of beach nourishment

Peterson Charles; Bishop Melanie (American Institute of Biological Science, 2005)

With sea levels rising under global warming, dredge-and-fill rpograms are increasignly employed to protect coastal development from shoreline erosion. Such beach "nourishment" can bury shallow reefs and degrade other beach ...
Microscale patchiness of virioplankton

Seymour Justin; Seuront L; Doubell M; Waters Raechel; Mitchell J (Cambridge University Press, 2006)

The microscale spatial distributions of viruses were investigated in three contrasting environments including oligotrophic open ocean, eutrophic coastal and estuarine habitats. The abundances of two discrete populations ...
Bioavailability of Iron Sensed by a Phytoplanktonic Fe-Bioreporter

Hassler Christel; Twiss R (American Chemical Society, 2006)

This study describes a short-term (12 h) evaluation of iron (Fe) bioavailability to an Fe-dependent cyanobacterial bioreporter derived from Synechococcus PCC 7942. Several synthetic ligands with variable conditional stability ...
Recovery and evolutionary analysis of complete integron gene cassette arrays from Vibrio

Boucher Yan; Nesbo Camilla; Joss M; Robinson Andrew; Mabbutt Bridget; Gillings Michael; Doolittle W; Stokes Harold (Biomed Central Ltd, 2006)

Background: Integrons are genetic elements capable of the acquisition, rearrangement and expression of genes contained in gene cassettes. Gene cassettes generally consist of a promoterless gene associated with a recombination ...
Sublethal effects on reproduction in native fauna: are females more vulnerable to biological invasion?

Gribben Paul; Wright Jeffrey (Springer-Verlag, 2006)

Although invasive species are a major threat to survivorship of native species, we know little about their sublethal effects. In soft-sediment marine systems, mat-forming invasive species often have positve effects, ...
Flow cytometric analysis of virus-like particles and heterotrophic bacteria within coral-associated reef water

Patten Nicole; Seymour Justin; Mitchell J (Cambridge University Press, 2006)

Using flow cytometry, two distinct populations of virus-like particles (VLP) and heterotrophic bacteria were defined within the 12 cm water layer immediately overlying healthy, diseased and dead acroporid corals. Bacterial ...
Ciguatoxins: Cyclic polyether modulators of voltage-gated Iion channel function

Nicholson Graham; Lewis Richard (Molecular Diversity Preservation International, 2006)

Ciguatoxins are cyclic poly ether toxins, derived from manne dinoflagellates, which are responsible for the symptoms of ciguatera poisoning. Ingestion of tropical and subtropical fin fish contaminated by ciguatoxins ...
Invasive seaweed enhances recruitment of a native bivalve: roles of refuge from predation and the habitat choice of recruits

Gribben Paul; Wright Jeffrey (Inter Research, 2006)

invasive species may have a range of negative effects on native species in the region invaded. The invasive green alga Cauperla taxifolia has invaded several temperate regions world-wide and now occurs in 9 estuaries in ...
The magnetic compass of domestic chickens, Gallus gallus

Freire Rafael; Wiltschko Wolfgang; Munro Ursula; Ritz T; Rogers Lesley; Thalau P; Wiltschko Roswitha (Company of Biologists Ltd, 2007)

By directional training, young domestic chickens have been shown to use a magnetic compass; the same method has now been used to analyse the functional characteristics and the physical principles underlying the ...
Engineering thick tissues - the vascularisation problem

Ko Henry; Milthorpe Bruce; Mcfarland Clive (AO Foundation Switzerland, 2007)

The ability to create thick tissues is a major tissue engineering challenge, requiring the development of a suitable vascular supply. Current trends are seeing the utilization of cells seeded into hybrid matrix/scaffold ...
Morphometric relationships, gametogenic development and spawning of the geoduck clam Panopea globosa (Bivalvia: Hiatellidae) in the Central Gulf of California

Chavez-Villalba Jorge; Aragon-Noriega Eugenio; Gribben Paul; Alcatara-Razo Edgar; Maeda-Martinez Alfonso; Arambula-Pujol Edna; Garcia-Juarez Alma; Maldonado-Amparo Rosalio (National Shellfisheries Association, 2007)
Complex habitats may not always benefit prey: linking visual field with reef fish behavior and distribution

Rilov G; Figueira William; Lyman Sean; Crowder Larry (Inter-Research, 2007)

Habitat structural complexity is often considered beneficial for prey species because it reduces the foraging efficiency of predators. However, for site-attached, territorial prey, such as many damselfishes, structural ...
A curious coincidence: mosquito biodiversity and the limits of the Japanese encephalitis virus in Australasia

Slapeta Jan; Hemmerter Stephane; Van Den Hurk Andrew; Cooper Bob; Whelan Peter; Russell Richard; Johansen Cheryl; Beebe Nigel (Biomed Central, 2007)

Background: The mosquito Culex annulirostris Skuse (Diptera: Culicidae) is the major vector of endemic arboviruses in Australia and is also responsible for the establishment of the Japanese encephalitis virus (JEV) in ...
Co-ordination of leaf area, sapwood area and canopy conductance leads to species convergence of tree water use in a remnant evergreen woodland.

Zeppel Melanie; Eamus Derek (CSIRO, 2008)

This paper compares rates of tree water use, Huber value, canopy conductance and canopy decoupling of two disparate, co-occurring tree species, in a stand of remnant native vegetation in temperate Australia in order to ...

Now showing items 21-40 of 61

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