Australian Journal of Botany

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Internal secretory spaces in thickened underground systems of Asteraceae species
Australian Journal of Botany - Tập 57 Số 3 - Trang 229 - 2009
Graziela Cury, Beatriz Appezzato‐da‐Glória
Secretory structures are present in many vascular plants and have an important ecological role as a plant defence mechanism against herbivors and pathogens. Internal secretory spaces of lipid substances are widespread in the Asteraceae. However, information about the occurrence of these structures in thickened underground systems is sparse, compared with what we know about aerial systems...... hiện toàn bộ
The origin and anatomy of rhizophores in Vernonia herbacea and V. platensis (Asteraceae) from the Brazilian Cerrado
Australian Journal of Botany - Tập 53 Số 3 - Trang 273 - 2005
Adriana Hissae Hayashi, Beatriz Appezzato‐da‐Glória
The aim of this work is to study the origin and anatomy of rhizophores in two Asteraceae species from the Brazilian Cerrado: Vernonia herbacea (Vell.) Rusby and V. platensis (Spreng.) Less. In both species, axillary buds from the cotyledonary node give rise to the first rhizophores. As rhizophores develop, these organs branch to form new rhizophores from their axillary buds that constitu...... hiện toàn bộ
Nickel accumulation by species of Alyssum and Noccaea (Brassicaceae) from ultramafic soils in the Urals, Russia
Australian Journal of Botany - Tập 63 Số 2 - Trang 78 - 2015
A. Yu. Teptina, Alexander Paukov
Cool temperate regions have a limited number of species able to accumulate nickel (Ni) and other heavy metals in above-ground tissues. Our study was conducted in order to find accumulators of Ni on serpentine soils in the Middle and Southern Urals. Above-ground tissues of plants as well as soil samples were collected in 10 ultramafic massifs. Our results confirmed hyperaccumulation activ...... hiện toàn bộ
Biological Nitrogen Fixation and Root-Nodule Bacteria (Rhizobium Sp. and Bradyrhizobium Sp.) In Two Rehabilitating Sand Dune Areas Planted With Acacia Spp
Australian Journal of Botany - Tập 33 Số 5 - Trang 595 - 1985
YM Barnet, P.C. Catt, DH Hearne
This paper reports a study of biological nitrogen fixation in two sand dune regions of New South Wales where planted Acacia spp. had been used in revegetation programmes. At one location (Bridge Hill Ridge), natural regrowth had produced a complex plant community, and native legumes in addition to the planted acacias were present. The other area (Wanda Beach) was a grossly disturbed site w...... hiện toàn bộ
Cyclones as an ecological factor in tropical lowland rain-forest, North Queensland
Australian Journal of Botany - Tập 6 Số 3 - Trang 220 - 1958
Webb Lj
The influence of cyclones on the structural and floristm composition of tropical lowland and foothill rain-forest in north Queensland is briefly described. Local topographic effects, as well as the general frequency and intensity of cyclones, are important. The local intensification of wind velocities, probably exceeding 100 m.p.h., which occur regularly in parts of the coastal corridor so...... hiện toàn bộ
Effects of the diploidisation process upon the 5S and 35S rDNA sequences in the allopolyploid species of the Dilatata group of Paspalum (Poaceae, Paniceae)
Australian Journal of Botany - Tập 67 Số 7 - Trang 521 - 2019
Magdalena Vaio, Cristina Mazzella, Marcelo Guerra, Pablo Speranza
The Dilatata group of Paspalum includes species and biotypes native to temperate South America. Among them, five sexual allotetraploids (x = 10) share the same IIJJ genome formula: P. urvillei Steud, P. dasypleurum Kunze ex Desv., P. dilatatum subsp. flavescens Roseng., B.R. Arrill. & Izag., and two biotypes P. dilatatum Vacaria and P. dilatatum Virasoro. Previous studies suggested...... hiện toàn bộ
The phytogeography of the Australian region
Australian Journal of Botany - Tập 8 Số 2 - Trang 75 - 1960
NT Burbidge
The Australian phytogeographic region is defined as including the Australian mainland and Tasmania. This region may be subdivided into the Tropical Zone in the north and east, the Temperate Zone in the south and east, and the Eremaean Zone in the arid centre. Delineation of these zones is closely linked with present day climates but their floristic constituents also reflect selection resul...... hiện toàn bộ
Corrigendum to: New handbook for standardised measurement of plant functional traits worldwide
Australian Journal of Botany - Tập 64 Số 8 - Trang 715 - 2016
Natalia Pérez Harguindeguy, Silvia Díaz, Éric Garnier, Sandra Lavorel, Hendrik Poorter, Pedro Jaureguiberry, M. Syndonia Bret‐Harte, William K. Cornwell, Joseph M. Craine, Diego E. Gurvich, Carlos Urcelay, Erik J. Veneklaas, Peter B. Reich, Lourens Poorter, Ian J. Wright, Prasun Ray, Lucas Enrico, Juli G. Pausas, Ad Vos, Nina Buchmann, Guillermo Funes, Fabien Quétier, John Hodgson, Ken Thompson, Huw D. Morgan, Hans ter Steege, Lawren Sack, B. Blonder, Peter Poschlod, María Victoria Vaieretti, Georgina Conti, A. Carla Staver, Sâmia Aquino, J. H. C. Cornelissen
Plant functional traits are the features (morphological, physiological, phenological) that represent ecological strategies and determine how plants respond to environmental factors, affect other trophic levels and influence ecosystem properties. Variation in plant functional traits, and trait syndromes, has proven useful for tackling many important ecological questions at a range of scales...... hiện toàn bộ
The utility of the eddy covariance techniques as a tool in carbon accounting: tropical savanna as a case study
Australian Journal of Botany - Tập 53 Số 7 - Trang 663 - 2005
Lindsay B. Hutley, R. Leuning, Jason Beringer, H. A. Cleugh
Global concern over rising atmospheric CO2 concentrations has led to a proliferation of studies of carbon cycling in terrestrial ecosystems. Associated with this has been widespread adoption of the eddy covariance method to provide direct estimates of mass and energy exchange between vegetation surfaces and the atmosphere. With the eddy covariance method, fast-response instruments (10–20...... hiện toàn bộ
Phylogeography of the rare Gymnocarpos przewalskii (Caryophyllaceae): indications of multiple glacial refugia in north-western China
Australian Journal of Botany - Tập 60 Số 1 - Trang 20 - 2012
Schneider David M, M. L. Zhang, Stewart C. Sanderson
We investigated the phylogeography of Gymnocarpos przewalskii Maxim. (Caryophyllaceae), a rare relictual shrub restricted to north-western China, in the context of Quaternary climate oscillations. Three cpDNA regions (psbA–trnH, ycf6–psbM and rpl32–trnL (UAG)) were sequenced for 160 individuals from 16 populations. High genetic diversity (hT = 0.930, hS = 0.425) and a significant phylogeog...... hiện toàn bộ
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