首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 15 毫秒
1.
Abstract

Between 1977 and 1989 the social wasp Vespula germanicacolonised mainland Australia and became established in New South Wales, Victoria, and South Australia. Accidental transport between towns is the main mechanism of spread. In many towns wasp nests have not been detected until they became widespread; therefore, eradication is difficult Successful eradication has, however, been achieved in many other towns.

Nesting places vary considerably among localities but relatively little among years at anyone locality. Peak wasp abundance occurs between January and April. Control of V. germanica nests costs Australia an estimated $600,000 (Aust. $) annually.  相似文献   

2.
3.
《Journal of bryology》2013,35(2):319-325
Abstract

An illustrated comparison is made of the three species, Fissidens nymanii, F. splachnoides and F. dealbatus in the subgenus Aneuron in Australia.  相似文献   

4.

A new species of Kiefferulus Goetghebuer is described and compared with species from Australia. This is the first record of the genus in New Zealand.  相似文献   

5.
《Journal of bryology》2013,35(4):509-557
Abstract

A new species, Bruchia queenslandica, collected in tropical Australia, is described. It is similar to B. carolinae in spore features but differs in the smooth calyptra and in vegetative characters. It is compared with B. carolinae and B. brevipes  相似文献   

6.
《Journal of bryology》2013,35(3):343-351
Abstract

A new species (Brachydontium intermedium) is described. It is the first record of the genus for Australia and a comparison is made with the other two species, both from the Northern hemisphere.  相似文献   

7.
Abstract

Blue penguins, Eudyptula minor, breeding on Penguin Island, Western Australia are considerably larger than other blue penguins in Australia. If genetic isolation is the cause, it may have implications for the conservation status of some blue penguin populations. We compared the sequences of two mitochondrial gene regions (cytochrome‐b and the control region) from Western Australian blue penguins with other populations of blue penguins from Australia and New Zealand. We found few differences between sequences from Western Australia, Phillip Island, Victoria and Otago, New Zealand, although all three differed considerably from other New Zealand blue penguins. Sequences for the control region from the Western Australian blue penguins and 30 more birds breeding at various Australasian sites provided further support for two major clades within Eudyptula; an Australian clade (including Otago) and a New Zealand clade.  相似文献   

8.
ABSTRACT

Australian fauna is widely recognised for its high levels of endemism, and tardigrade fauna does not seem to be an exception in this respect. The richness of xerothermic habitats in Australia, often occupied by heterotardigrade family Echiniscidae, entails high abundance and uniqueness of echiniscid assemblages. A new gonochoristic/dioecious echiniscid species was found in large numbers in samples from Western Australia. Echiniscus siticulosus sp. nov., characterised by dominant large cuticular pores in the dorsal sculpture and appendages in the form of spines, represents the spinulosus group but can be distinguished from the known members of this species complex by a unique combination of traits: peculiar faceting of the caudal plate formed by ridge-shaped epicuticular extensions and pore morphology. An amended phenotypic diagnosis of Echiniscus spiniger Richters 1904, the species morphologically most similar to the new species, is also presented.  相似文献   

9.
《Journal of bryology》2013,35(4):701-707
Abstract

A new species, Leptodontiumparadoxum, is described from southern Australia. It differs from L. viticulosoides, a widespread species which occurs in southern Queensland, in the entire leaf margin and in the smaller and less conspicuous patch of inner basal cells.  相似文献   

10.
Proceedings     
none 《Journal of bryology》2013,35(1):123-132
Abstract

The specimen of Crossidium geheebii from Sinai, reduced to synonymy with C. aberrans by Delgadillo (1975), is shown to belong to C. geheebii. The disjunct Sinai - Australia, New Zealand distribution is interpreted as a relict of the Xerothermic Pangaean distribution pattern.  相似文献   

11.
ABSTRACT

The venerid bivalve Eumarcia fumigata was a common species in Western Australia (WA) during the Pleistocene, where it was distributed as far north as Shark Bay. It became extinct in WA as the climate changed several thousand years ago but remains common in eastern Australia from southern Queensland to South Australia and Tasmania. The species has recently reappeared in the Swan River, probably due to shipping movements. Of the > 60 marine and estuarine species introduced into WA it is only the third confirmed introduction from eastern Australia, and the first that is a reappearance in the Swan River of a species present in the geological past. The present reappearance of E. fumigata, and the introduction of other species, has been made possible by the removal of a rocky bar at the mouth of the estuary and the creation of more marine conditions in the lower Swan estuary.  相似文献   

12.
《Journal of bryology》2013,35(4):467-474
Abstract

A new species, Acaulon eremicola is described from aridcentral Australia. It differs from A. muticum and A. integrifolium in the leaf with longer cells and longer usually downwardly curved acuminate apex with twisted arista, the strongly incurled leaf margins when dry, and different spore pattern.  相似文献   

13.
14.
Abstract

The first records of Sitona discoideus and Trifolium repens on Norfolk Island are reported. The identities of both species were confirmed using morphological criteria and nucleotide sequences. Sequence data from the mitochondrial gene cytochrome oxidase subunit 1 of the Norfolk Island S. discoideus specimens were compared with 33 specimens from Australia, New Zealand and France. These data represent the first published sequences for S. discoideus, and suggest that Australia or New Zealand was the source of Norfolk Island's population. The implications of the introduction of S. discoideus to Norfolk Island are discussed.  相似文献   

15.
《Journal of bryology》2013,35(1):19-50
Abstract

A new species of Uleobryum, U. curtisii, collected in Queensland, Australia is described. It differs from the only otherspecies, U. peruvianum from South America, particularly in the multipapillose lamina cells and the smoother calyptra. Axillary bulbils were present in one population.  相似文献   

16.
17.

Photo Wallahs Photo Wallahs, an encounter with photography in Mussoorie, a north Indian hill station. Directed by David and Judith MacDougall; camera: David MacDougall; sound: Judith MacDougall; editor: Dai Vaughan. Distributed by Fieldwork Films, 12 Meehan Gardens, Griffith, Canberra, A.C.T. 2603, Australia. 1991, 58 minutes, color, 16 mm. and PAL.  相似文献   

18.
《Journal of bryology》2013,35(2):199-209
Abstract

A new species, Nanobryum thorsbornei, is described from northern Queensland, Australia, and compared with N. dummeri, an African species to which it seems most closely allied. They both have a remarkable persistent protonema which is partly pseudothallose but the leaves of the Australian species are trilobate, a feature lacking in the African species. The relationship of Nanabryum with Fissidens, particularly F. gladiolus, is discussed.  相似文献   

19.
Abstract

Two new species of eutardigrade, Itaquascon unguiculum and Itaquascon cambe‐warrense, are described from Australia. Itaquascon unguiculum differs from the other species of the genus by having small claws with respect to the body size, and in other quantitative characters. Itaquascon cambewarrense is characterised by stylet furcae which are triangular in shape, with apices thickened but not prolonged to form postero‐lateral processes.  相似文献   

20.
Eco–Enterprises and Terminalia ferdinandiana : “Best Laid Plans” and Australian Policy Lessons. This paper reviews practical policy lessons from trade in a dietary supplement (or nutraceutical) processed from Terminalia ferdinandiana (Combretaceae), which contains extremely high levels of natural ascorbic acid (vitamin C). Most production is from wild harvest by Aboriginal people, who get USD 14 per kilogram (kg) for picked, sorted fruit. However, the main Australian company involved is struggling to get the 12 tons/year it requires, and could market much more. Although Aboriginal people ideally should benefit economically from harvest of T. ferdinandiana, there are major challenges to this objective, including Australia’s high labor costs compared to Asia, Africa, and Latin America where T. ferdinandiana can be grown. In addition, although Australia is a signatory to and plays a leading role in the international Convention on Biodiversity (CBD), this has meant little in practice so far. “Cultural branding” and certification of organic, wild harvested T. ferdinandiana fruit collected by Aboriginal people working in partnership with commercial companies offers a possibility for Aboriginal people to continue to benefit from wild harvest or enrichment plantings. However, even the establishment of commercial horticultural production within Australia faces several challenges. For Australia to maintain and develop the international market, future development of this bush food must include: (a) implementation of existing international and national policies on protection of genetic resources; (b) formation of a producer association to increase production efficiencies; (c) functioning partnerships between Aboriginal producers and commercial partners that guarantee and expand reliable supply and develop cultural branding and certification as marketing tools; and (d) scientific research into improving T. ferdinandiana fruit yields and production methods, based on improved resource management and efficient processing methods.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号