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You searched for: Journal Austral ecology Remove constraint Journal: Austral ecology Publication Year 2011 Remove constraint Publication Year: 2011 Source 2011 v.36 no.6 Remove constraint Source: 2011 v.36 no.6
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1. Are the patterns of regeneration in the endangered Eucalyptus gunnii ssp. divaricata shifting in response to climate?

Author:
SANGER, JENNIFER C.; DAVIDSON, NEIL J.; O'GRADY, ANTHONY P.; CLOSE, DUGALD C.
Source:
Austral ecology 2011 v.36 no.6 pp. 612-620
ISSN:
1442-9985
Subject:
Eucalyptus gunnii; Eucalyptus pauciflora; adults; climate; drought; drought tolerance; forests; osmotic pressure; rain; seedlings; soil; summer; trees; turgor; Tasmania
Abstract:
... Increasing drought frequency is a major driver of changes in forest structure and has been implicated in the decline of the endangered tree species, Eucalyptus gunnii ssp. divaricata (McAulay & Brett) in the Central Plateau region of Tasmania, Australia. In this study, we examined patterns of regeneration, aspects of the water relations of E. gunnii ssp. divaricata and its replacement Eucalyptus p ...
DOI:
10.1111/j.1442-9993.2010.02194.x

2. Behavioural responses of native predators to an invasive toxic prey species

Author:
NELSON, DAVID W. M.; CROSSLAND, MICHAEL R.; SHINE, RICHARD
Source:
Austral ecology 2011 v.36 no.6 pp. 605-611
ISSN:
1442-9985
Subject:
tadpoles; Rhinella marina; learning; predators; indigenous species; toxicity; invasive species; trout; foraging; frogs; mortality; toads
Abstract:
... One important impact of invasive species may be to modify the behaviour of native taxa. For example, the invasion of highly toxic cane toads (Bufo marinus) kills many anurophagous native predators, but other predators learn to recognize and avoid the toxic invader. We exposed native fish (northern trout gudgeons, Mogurnda mogurnda) and Dahl's aquatic frogs (Litoria dahlii) to cane toad tadpoles, t ...
DOI:
10.1111/j.1442-9993.2010.02187.x

3. Crown condition assessment: An accurate, precise and efficient method with broad applicability to Eucalyptus

Author:
HORTON, B. M.; CLOSE, D. C.; WARDLAW, T. J.; DAVIDSON, N. J.
Source:
Austral ecology 2011 v.36 no.6 pp. 709-721
ISSN:
1442-9985
Subject:
Eucalyptus; branches; correlation; decline; dieback; forest health; principal component analysis; shrinkage; trees; Tasmania; Western Australia
Abstract:
... Assessment of crown condition is a useful tool for monitoring forest health and is used widely to assess tree dieback and decline. Multiple methods used to assess eucalypt crown condition are difficult to compare across studies. Furthermore, the relative effectiveness of the available methods has not been evaluated. The objective of this study was to find an accurate, precise and efficient method ...
DOI:
10.1111/j.1442-9993.2010.02206.x

4. Easy technique for assessing pollination rates in the genus Erica reveals road impact on bird pollination in the Cape fynbos, South Africa

Author:
GEERTS, SJIRK; PAUW, ANTON
Source:
Austral ecology 2011 v.36 no.6 pp. 656-662
ISSN:
1442-9985
Subject:
Erica; anthropogenic activities; biodiversity; birds; color; ecosystems; flowers; landscapes; plant density; pollen; pollination; refuge habitats; robbing; surveys; traffic; South Africa
Abstract:
... Road traffic is one of the most pervasive forms of anthropogenic disturbance, but its impact on pollination, a potentially sensitive ecosystem process, has not been investigated. Such an assessment is needed in order to evaluate the potential for roadside verges to act as biodiversity refugia and corridors in otherwise transformed landscapes. Here, we document the impact of a two‐lane tar road on ...
DOI:
10.1111/j.1442-9993.2010.02201.x

5. Effects of sandy beach cusps on wrack accumulation, sediment characteristics and macrofaunal assemblages

Author:
DUONG, H. L. STEPHANIE; FAIRWEATHER, PETER G.
Source:
Austral ecology 2011 v.36 no.6 pp. 733-744
ISSN:
1442-9985
Subject:
beaches; fauna; habitats; macroalgae; nutrients; organic matter; particle size; sediments; South Australia
Abstract:
... Beach‐cast marine macroalgae and seagrasses, collectively termed wrack, provide shelter and habitat for beach fauna and can often provide a large input of energy and nutrients to sandy beaches. Wrack deposition on sandy beaches varies spatially and could be affected by morphological features on the beach face such as cusps. This study tested a series of hypotheses regarding the differences in wr ...
DOI:
10.1111/j.1442-9993.2010.02212.x

6. Fire incidence, but not fire size, affects macropod densities

Author:
STYGER, J. K.; KIRKPATRICK, J. B.; MARSDEN‐SMEDLEY, J. O. N.; LEONARD, S. W. J.
Source:
Austral ecology 2011 v.36 no.6 pp. 679-686
ISSN:
1442-9985
Subject:
Eucalyptus; burning; forests; grasses; herbivores; herbs; soil; soil nutrients
Abstract:
... The regeneration of plants post‐fire has widely been shown to be attractive to vertebrate herbivores. However, there are few data relevant to the effect of fire size on herbivore densities. In dry eucalypt forest in one region and hummock sedgeland in another region, we used timed scat counts to test the effect of fire and fire size on Tasmanian macropod densities 6 months after burning. We also t ...
DOI:
10.1111/j.1442-9993.2010.02203.x

7. Fire, landscape change and models of small mammal habitat suitability at multiple spatial scales

Author:
DI STEFANO, JULIAN; OWEN, LAURA; MORRIS, ROBERT; DUFF, TOM; YORK, ALAN
Source:
Austral ecology 2011 v.36 no.6 pp. 638-649
ISSN:
1442-9985
Subject:
Xanthorrhoea; biodiversity; ecosystems; fire regime; habitats; mice; rats; small mammals; statistical models; variance; vegetation; vegetation structure
Abstract:
... Fire is an important process in many ecosystems, but inappropriate fire regimes can adversely affect biodiversity. We identified a naturally flammable heathy woodland ecosystem where the use of planned fire had increased the extent of older vegetation, and quantified the abundance of two small native mammals in this landscape (silky mouse Pseudomys apodemoides and heath rat P. shortridgei). We def ...
DOI:
10.1111/j.1442-9993.2010.02199.x

8. From lynx spiders to cotton: Behaviourally mediated predator effects over four trophic levels

Author:
WHITEHOUSE, M. E. A.; MANSFIELD, S.; BARNETT, M. C.; BROUGHTON, K.
Source:
Austral ecology 2011 v.36 no.6 pp. 687-697
ISSN:
1442-9985
Subject:
Creontiades dilutus; Nabis; Oxyopes; bolls; cages; cotton; food webs; foods; herbivores; predators
Abstract:
... Food web studies often examine density and behaviourally mediated effects of predators on herbivores, but are less likely to assess the plant targeted by the herbivore. We conducted a study that incorporated four trophic levels examining the effect of two generalist predators (damsel bugs, Nabis kinbergii Reuter; and lynx spiders, Oxyopes molarius L. Koch) on damage to cotton bolls caused by green ...
DOI:
10.1111/j.1442-9993.2010.02204.x

9. Implications of movement patterns of a dietary generalist for mistletoe seed dispersal

Author:
RAWSTHORNE, JOHN; WATSON, DAVID M.; ROSHIER, DAVID A.
Source:
Austral ecology 2011 v.36 no.6 pp. 650-655
ISSN:
1442-9985
Subject:
Amyema; Aves; birds; digestive system; foraging; frugivores; gender; hosts; radio telemetry; seed dispersal; seeds
Abstract:
... Mistletoes are dispersed primarily by frugivorous birds and have highly aggregated distributions at multiple scales. Mistletoe specialist frugivores have been found to intensify infections within infected hosts and stands, and this is considered the most likely mechanism underlying clumped mistletoe distributions at these scales. How these patchy infections first develop and whether seed disperser ...
DOI:
10.1111/j.1442-9993.2010.02200.x

10. Microbats in a ‘leafy’ urban landscape: are they persisting, and what factors influence their presence?

Author:
BASHAM, ROCHELLE; LAW, BRADLEY; BANKS, PETER
Source:
Austral ecology 2011 v.36 no.6 pp. 663-678
ISSN:
1442-9985
Subject:
Chiroptera; cities; correlation; environmental sustainability; gardens; habitats; national parks; residential areas; sandstone; shale; shrublands; species diversity; summer; surveys; tree and stand measurements; trees; urban areas; urbanization
Abstract:
... Urbanization is an extreme form of habitat modification, but retention of native vegetation in bushland reserves may improve the ecological sustainability of cities. We focused on bats (Microchiroptera) and investigated the use of the urban matrix and surrounding bushland in a region of Sydney, Australia, where remnant bushland persists and gardens often support large trees. Ultrasonic surveys wer ...
DOI:
10.1111/j.1442-9993.2010.02202.x

11. Physical and anthropogenic factors predict distribution of the invasive weed Tradescantia fluminensis

Author:
BUTCHER, ELLEN R.; KELLY, DAVE
Source:
Austral ecology 2011 v.36 no.6 pp. 621-627
ISSN:
1442-9985
Subject:
Tradescantia fluminensis; altitude; gardens; humans; invasive species; models; prediction; temperature; vegetation; wastes; New Zealand
Abstract:
... The increasing need to manage plant invasions has generated international interest in predicting the dispersal of invasive weeds, including the role of humans due to the influence of anthropogenic factors on invasions. Tradescantia fluminensis, an invasive weed, is spread in New Zealand only by vegetative fragments, with long‐distance dispersal thought to be largely by human dumping of garden wast ...
DOI:
10.1111/j.1442-9993.2010.02196.x

12. The behavioural ecology and population dynamics of a cryptic ground‐dwelling mammal in an urban Australian landscape

Author:
FITZGIBBON, SEAN I.; WILSON, ROBBIE S.; GOLDIZEN, ANNE W.
Source:
Austral ecology 2011 v.36 no.6 pp. 722-732
ISSN:
1442-9985
Subject:
Isoodon; foraging; grasses; grasslands; habitat destruction; habitat fragmentation; habitats; landscapes; mammals; monitoring; population density; population dynamics; radio; radio telemetry; reproductive performance; shrublands; urbanization; weeds; wildlife
Abstract:
... Urbanization results in widespread habitat loss and fragmentation and generally has a negative impact upon native wildlife, in particular ground‐dwelling mammals. The northern brown bandicoot (Isoodon macrourus; Marsupialia: Peramelidae) is one of relatively few native Australian ground‐dwelling mammals that is able to survive within urbanized landscapes. As a consequence of extensive clearing ...
DOI:
10.1111/j.1442-9993.2010.02209.x

13. Trophic structure of macroinvertebrates in Amazonian streams impacted by anthropogenic siltation

Author:
COUCEIRO, SHEYLA R. M.; HAMADA, NEUSA; FORSBERG, BRUCE R.; PADOVESI‐FONSECA, CLAUDIA
Source:
Austral ecology 2011 v.36 no.6 pp. 628-637
ISSN:
1442-9985
Subject:
color; forests; leaves; macroinvertebrates; natural gas; organic matter; predators; primary energy; scrapers; sediments; streams; Brazil
Abstract:
... This study assessed the results of anthropogenic sediment input on macroinvertebrate trophic structure in streams located in an area of oil and natural gas exploitation in Brazil's Amazon forest. The results indicate that macroinvertebrate communities both in streams impacted by anthropogenic sediments and in non‐impacted streams are composed mainly of taxa in the following functional feeding gr ...
DOI:
10.1111/j.1442-9993.2010.02198.x

14. Using ants to manage sustainable grazing: Dynamics of ant faunas along sheep grazing gradients conform to four global patterns

Author:
HOFFMANN, BENJAMIN D.; JAMES, CRAIG D.
Source:
Austral ecology 2011 v.36 no.6 pp. 698-708
ISSN:
1442-9985
Subject:
vegetation structure; vegetation types; arid zones; community structure; rangelands; pastures; sheep; multivariate analysis; species diversity; grazing intensity; Formicidae; grazing lands; fauna; environmental monitoring
Abstract:
... Ants are considered an important faunal group for the functioning of arid rangelands, they have a long history of use for environmental monitoring, and exhibit four global patterns in grazing lands: (i) soil and vegetation type are primary determinants of ant community composition, and have a far greater effect on ant community composition than grazing; (ii) grazing induces species compositional c ...
DOI:
10.1111/j.1442-9993.2010.02205.x