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| 1 | Current trends in biotechnology production of xylitol and future prospects显示文摘 | Prakasham R S Sreenivas R Rao P J.Hobbs | | 0，，03： | 1 |
| 2 | Categorizing Australian landscapes as an aid to assessing the generality of landscape management guidelines显示文摘 | Richard J.Hobbs S.McIntyre | 2004 | Global Ecology and Biogeography2004，，1： | 1 |
| 3 | Biodiversity change in heathland and its relationships with shifting local fire regimes and native species expansion显示文摘Aims Understanding the relationships among disturbance,invasion and species change is essential for effective management of many sys-tems.We investigated relationships among fire history,invasion by a native tree species,Allocasuarina huegeliana,and diversity change to understand the potential drivers of plant community alteration in a complex and biodiverse system.Methods We used plant species surveys from 1983 and 2011 to quantify spe-cies loss/gain and thence compositional changes.Additionally,we surveyed population densities of the invasive species and collated long-term fire history data for each site.General linear models and non-parametric models were used to assess the strength of relation-ships between the three variables of interest.Important Findings Within the last 30 years,~11%of the plant species richness was lost from the reserve.At an individual site level,we found only a 4%average decrease in overall plant species richness,but large species losses and gains that imply considerable compositional shifts.Though such shifts might be expected over 30 years,many of the gained species were common,potentially opportunistic species,while those lost were often locally rare woody perennials.In addi-tion,gained species tended to be expanding their recorded range westward suggesting that they may be responding to the regional drying climate.The relationship between invasion density and spe-cies loss was strong over all spatial scales.We identified a poten-tial state change to dominance by the native invasive particularly as high densities prevented species gain at the site scale.In these extreme cases of high invasive density and high biodiversity loss,we argue that there may be a need to directly address the expanding native population. | Nancy Shackelford Michael Renton Michael P.Perring Kristine Brooks Richard J.Hobbs | 2015 | Journal of Plant Ecology2015，8，1： | 0 |
| 4 | Diverse outcomes of species interactions in an invaded annual plant community显示文摘Aims Despite acknowledgement that interactions among native and exotic species are important for determining the structure and diversity of novel communities,directed experiments using mul-tiple exotics from the same system are rare.Recent observational studies have highlighted distinct ways that exotic species interface with resident natives across invaded communities.The correlative nature of these studies,however,has provided few details about the mechanisms driving distinct interaction outcomes within the same communities.Our aim was to determine how three exotic annual plant species with distinct relationships with local plant diversity impact the performance of a co-occurring native annual in the York gum-jam woodlands of Western Australia.Methods We grew species in experimental communities in growth chambers at varying total planting densities to assess how interaction out-comes varied among natives and exotics across a gradient of com-petition intensity.We measured a variety of performance responses,including survival,biomass and population-level and individual-level reproductive investment.Important Findings Overall,the effects of interspecific versus intraspecific competi-tion on performance varied with the identity and density of exotic competitors.The exploitative exotic grass Bromus madritensis was dominant in polyculture,whereas the diminutive grass Pentameris airoides conferred weak intraspecific competition and interspe-cific facilitation on native Waitzia nitida.The exotic broadleaf forb,Hypochaeris glabra,suppressed growth and survival of W.nitida,while W.nitida had weakly negative,neutral or positive effects on all exotics.These outcomes highlight the complexity of interac-tions impacting the diversity,stability and structure of novel plant communities.As few of these communities contain a single exotic species,understanding the competitive dynamics occurring in diverse novel communities is critical for their conservation and restoration. | Claire E.Wainwright John M.Dwyer Richard J.Hobbs Margaret M.Mayfield | 2017 | Journal of Plant Ecology2017，10，6： | 0 |
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