Pollination by nectar‐foraging pompilid wasps: a new specialised pollination strategy for the Australian flora

Plant Biology ◽  
2021 ◽  
Author(s):  
Ryan D. Phillips ◽  
Björn Bohman ◽  
Rod Peakall
Keyword(s):  
Nectar Foraging ◽  
Australian Flora ◽  
Pollination Strategy

scholarly journals Pollination by nectar-foraging thynnine wasps in the endangered Caladenia arenaria and Caladenia concolor (Orchidaceae)

2019 ◽  
Vol 67 (7) ◽  
pp. 490 ◽  
Author(s):  
Noushka Reiter ◽  
Björn Bohman ◽  
Marc Freestone ◽  
Graham R. Brown ◽  
Ryan D. Phillips
Keyword(s):  
Threatened Species ◽  
Single Species ◽  
Orchid Species ◽  
Late Afternoon ◽  
Nectar Foraging ◽  
Pollinator Species ◽  
Floral Visitors ◽  
Pollination Strategy ◽  
Pollination Systems

Prior to undertaking conservation translocations of plants with specialised pollination systems, it is important to ensure the presence of pollinators at recipient sites. Here, for two threatened species, Caladenia concolor Fitzg. and Caladenia arenaria Fitzg. (Orchidaceae), we determine (i) the pollination strategy used, (ii) which floral visitors are involved in pollination, and (iii) whether the pollinator species are present at potential translocation sites. For both orchid species, pollination was primarily achieved by nectar-foraging thynnine wasps, with a single species responsible for pollination in C. concolor, whereas C. arenaria utilised at least two species to achieve pollination. Both orchid species secreted meagre quantities of sucrose on the upper surface of the labellum. Visits to C. concolor occurred primarily in the late afternoon, with some wasps perching on the flowers overnight. Surveys revealed that pollinators were present at all extant populations and most potential translocation sites for both orchids. The specialisation on one pollinator species in C. concolor means that the distribution of the pollinator needs to be considered for conservation translocations. With C. arenaria, the risk of hybridisation with other Caladenia that are known to share one of its pollinator species needs to be taken into account when selecting translocation sites.

Pollination strategy: Speedy domination

Nature China ◽  
2008 ◽  
Author(s):  
Felix Cheung
Keyword(s):  
Pollination Strategy

Australian Flora: Its Protection and Preservation

1935 ◽  
Vol 7 (25) ◽  
pp. 68
Author(s):  
G. K. Cowlishaw ◽  
P. Sherman
Keyword(s):  
Australian Flora

scholarly journals Potential susceptibility of Australian flora to a NA2 isolate of Phytophthora ramorum and pathogen sporulation potential

2011 ◽  
Vol 42 (4) ◽  
pp. 305-320 ◽  
Author(s):  
K. B. Ireland ◽  
D. Hüberli ◽  
B. Dell ◽  
I. W. Smith ◽  
D. M. Rizzo ◽  
...  
Keyword(s):  
Phytophthora Ramorum ◽  
Australian Flora

Biogeography after Burbidge

1998 ◽  
Vol 11 (2) ◽  
pp. 231 ◽  
Author(s):  
Pauline Y. Ladiges
Keyword(s):  
Geographic Distribution ◽  
Analytical Methods ◽  
New Method ◽  
Memorial Lecture ◽  
General Area ◽  
Australian Flora ◽  
Cladistic Biogeography

The contributions of Nancy Burbidge and Leon Croizat to an understanding of Australian phytogeography are summarised and compared. The focus of systematics on relationship and nodes of cladograms is outlined as the basis of modern cladistic biogeography. It is argued that development of explicit analytical methods for the discovery of general area cladograms has been hindered by lack of recognition of geographic paralogy—evidenced by duplication or overlap in geographic distribution of taxa related at a node in a cladogram. A new method, subtree analysis, which recognises and eliminates paralagous nodes, and often inconsistencies, is illustrated with examples from the Australian flora. General patterns are congruent with conclusions of Burbidge and Croizat. Paper Presented as the 1996 Nancy Burbridge Memorial Lecture.

scholarly journals ‘So many sparks of fire’: Dorothy Cottrell, modernism and mobility

2016 ◽  
Vol 23 (2) ◽  
pp. 164-177
Author(s):  
Jessica White
Keyword(s):  
Still Life ◽  
National Library ◽  
World Book ◽  
The World ◽  
Sydney Harbour ◽  
The Caribbean ◽  
Australian Flora ◽  
Art School

AbstractThe broad brush strokes of Dorothy Cottrell's paintings in the National Library of Australia mark her as a modernist artist, although not one who painted the burgeoning Sydney Harbour Bridge or bright still-life paintings of Australian flora. Rather, she captured the dun surrounds of Ularunda Station, the remote Queensland property to which she moved in 1920 after attending art school in Sydney. At Ularunda, Cottrell eloped with the bookkeeper to Dunk Island, where they stayed with nature writer E.J. Banfield, then relocated to Sydney. In 1924 they returned to Ularunda and Cottrell swapped her paintbrush for a pen, writing The Singing Gold. After advice from Mary Gilmore, whom her mother accosted in a pub, Cottrell send it to the Ladies Home Journal in America. It was snapped up immediately, optioned for a film and found a publisher in England, who described it as ‘a great Australian book, and a world book’. Gilmore added, ‘As an advertisement for Australia, it will go far — the Ladies Home Journal is read all over the world’. Cottrell herself also went far, emigrating to America, where she wrote The Silent Reefs, set in the Caribbean. Cottrell's creative, intellectual and physical peregrinations — all undertaken in a wheelchair after she contracted polio at age five — show how the local references the international, and vice versa. Through an analysis of the life and writing of this now little-known Queensland author, this essay reflects the regional and transnational elements of modernism as outlined in Neal Alexander and James Moran's Regional Modernisms, illuminating how a crack-shot with a rifle once took Queensland to the world.

scholarly journals Why so many flowers? A preliminary assessment of mixed pollination strategy enhancing sexual reproduction of the invasive <i>Acacia longifolia</i> in Portugal

Web Ecology ◽  
2018 ◽  
Vol 18 (1) ◽  
pp. 47-54 ◽  
Author(s):  
Manuela Giovanetti ◽  
Margarida Ramos ◽  
Cristina Máguas
Keyword(s):  
Invasive Plant ◽  
Seed Set ◽  
Pollen Grains ◽  
Striking Difference ◽  
Pollination Syndromes ◽  
Pollination Success ◽  
Relative Contribution ◽  
Acacia Longifolia ◽  
Exclusion Experiments ◽  
Pollination Strategy

Abstract. Acacia longifolia, a native legume from Australia, has been introduced in many European countries and elsewhere, thus becoming one of the most important global invasive species. In Europe, its flowering occurs in a period unsuitable for insect activity: nonetheless it is considered entomophilous. Floral traits of this species are puzzling: brightly coloured and scented as liked by insects, but with abundant staminate small-sized flowers and relatively small pollen grains, as it is common in anemophilous species. Invasion processes are especially favoured when reshaping local ecological networks, thus the interest in understanding pollination syndromes associated with invasive plant species that may facilitate invasiveness. Moreover, a striking difference exists between its massive flowering and relatively poor seed set. We introduced a novel approach: first, we consider the possibility that a part of the pollination success is carried on by wind and, second, we weighted the ethological perspective of the main pollinator. During the flowering season of A. longifolia (February–April 2016), we carried on exclusion experiments to detect the relative contribution of insects and wind. While the exclusion experiments corroborated the need for pollen vectors, we actually recorded a low abundance of insects. The honeybee, known pollinator of acacias, was relatively rare and not always productive in terms of successful visits. While wind contributed to seed set, focal observations confirmed that honeybees transfer pollen when visiting both the inflorescences to collect pollen and the extrafloral nectaries to collect nectar. The mixed pollination strategy of A. longifolia may then be the basis of its success in invading Portugal's windy coasts.

scholarly journals Ideas and Perspectives: On the emission of amines from terrestrial vegetation in the context of atmospheric new particle formation

2015 ◽  
Vol 12 (4) ◽  
pp. 3211-3243
Author(s):  
J. Sintermann ◽  
A. Neftel
Keyword(s):  
Particle Formation ◽  
Direct Impact ◽  
Terrestrial Vegetation ◽  
New Particle Formation ◽  
Vegetative Plant ◽  
Agricultural Emissions ◽  
Pollination Strategy ◽  
Species Specific ◽  
Open Question ◽  
The 19Th Century

Abstract. In this article we summarise recent science, which shows how airborne amines, specifically methylamines (MAs), play a key role in atmospheric new particle formation (NPF) by stabilising small molecule clusters. Agricultural emissions are assumed to constitute the most important MA source, but given the short atmospheric residence time of MAs, they can hardly have a direct impact on NFP events observed in remote regions. This leads us to the presentation of existing knowledge focussing on natural vegetation-related MA sources. High MA contents as well as emissions by plants have already been described in the 19th century. Strong MA emissions predominantly occur during flowering as part of a pollination strategy. The behaviour is species specific, but examples of such species are common and widespread. In addition, vegetative plant tissue exhibiting high amounts of MAs might potentially lead to significant emissions, and the decomposition of organic material could constitute another source for airborne MAs. These mechanisms would provide sources, which could be crucial for the amine's role in NPF, especially in remote regions. Knowledge about vegetation-related amine emissions is, however, very limited and thus it is also an open question how Global Change and the intensified cycling of reactive nitrogen over the last 200 years have altered amine emissions from vegetation with a corresponding effect on NPF.

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