Phytophthora Cinnamomi in a Pine Forest in South Australia.

1979 ◽  
Vol 8 (4) ◽  
pp. 49 ◽  
Author(s):  
M Bumbieris ◽  
R Boardman
1981 ◽  
Vol 29 (1) ◽  
pp. 11 ◽  
Author(s):  
M Bumbieris

In a pine forest plantation, P. cinnamomi was rarely isolated from the root zones, and never from the roots, of established P. radiata growing at P. cinnamomi sites. When a P. cinnamomi site was replanted with P. radiata, a third of the young pines died during the first 9 months, about 50% of them yielding P. cinnamomi from roots. Death of the trees followed an increase in the soil population density of P. cinnamomi which appeared to be correlated with increasing soil temp. and high soil moisture.


Author(s):  

Abstract A new distribution map is provided for Phytophthora cinnamomi Rands. Hosts: Ananas, Cinchona, Cinnamomum, Castanea, Persea, Pinus, Rhododendron and others. Information is given on the geographical distribution in Africa, Burundi, Cameroon, Congo, Gabon, Guinea, Ivory Coast, Kenya, Morocco, South Africa, Uganda, Zambia, Zimbabwe, Asia, China, Jiangsu, India, Madras, Andhra, Pradesh, West Bengal, Indonesia, Java, Sumatra, Israel, Japan, Malaysia, Peninsular, Sabah, Philippines, Taiwan, Turkey, Vietnam, USSR, Georgia, Australasia & Oceania, Australia, New South Wales, Queensland, Victoria, Western Australia, South Australia, Tasmania, Northern Territory, Cook Island, Fiji, Hawaii, New Zealand, Okinawa, Papua New Guinea, Sumatra, Europe, Azores, Belgium, France, Corsica, Germany, Irish Republic, Italy, Netherlands, Portugal, Spain, Switzerland, UK, USSR, Black Sea Region, Yugoslavia, North America, Canada, British Columbia, Mexico, USA, Central America & West Indies, Barbados, Belize, Costa Rica, Cuba, Dominican Republic, Guatemala, Honduras, Jamaica, Panama, Puerto Rico, Salvador, St Lucia, St Vincent, Trinidad, South America, Argentina, Bolivia, Brazil, Sao Paulo, Brasilia, Chile, Colombia, Guyana, Peru, Venezuela.


2005 ◽  
Vol 53 (5) ◽  
pp. 455 ◽  
Author(s):  
Sophie Petit ◽  
Catherine Ruth Dickson

We examined the role of the grass-tree Xanthorrhoea semiplana F.Muell. canopy in the survival of the nationally endangered orchid Caladenia (syn. Arachnorchis) behrii Schltdl. at three sites in the northern Adelaide region. We compared grazing and pollination of the flowering orchids within and away from the grass-tree canopy. Grass-trees generally provided significant protection from grazing, but orchids protected by grass-trees experienced reduced pollination for 2 out of 5 years. The net effect of these interactions, as measured by seed set, varied across years. When grazing pressure is high, orchids may benefit from grass-tree protection (facilitation), but under low grazing pressure, it is more probable that orchids set seeds away from grass-trees than under their canopy. Grazing pressure probably does not decrease in view of habitat fragmentation the importance of fragments as wildlife refuges. Therefore, factors affecting the survival of grass-trees, such as Phytophthora cinnamomi, may also affect orchid survival. Kangaroos which are often assumed to be responsible for most grazing in the Adelaide Hills are not the only predators of orchids, and a culling program has so far not resulted in a decrease of grazing pressure for the orchids. Translocation and fencing programs should examine the role of facilitative plants and grazers before spending precious conservation resources.


1973 ◽  
Vol 26 (1) ◽  
pp. 163 ◽  
Author(s):  
EM Davison ◽  
M Bumbieris

A survey was carried out during the winter of 1971 to determine whether Phytophthora and Pythium spp. are present in South Australian pine plantations. Phytophthora cryptogea was frequently isolated from Kuitpo forest reserve in the Adelaide hills, but Phytophthora cinnamomi was isolated from only one tree in a pine seed orchard.


2019 ◽  
Vol 3 (1-2) ◽  
pp. 103-124
Author(s):  
Gemma Tulud Cruz

Christian missionaries played an important role in the Australian nation building that started in the nineteenth century. This essay explores the multifaceted and complex cultural encounters in the context of two aboriginal missions in Australia in the nineteenth century. More specifically, the essay explores the New Norcia mission in Western Australia in 1846-1900 and the Lutheran mission in South Australia in 1838-1853. The essay begins with an overview of the history of the two missions followed by a discussion of the key faces of the cultural encounters that occurred in the course of the missions. This is followed by theological reflections on the encounters in dialogue with contemporary theology, particularly the works of Robert Schreiter.


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