A conceptual model of vegetation dynamics for the unique obligate-seeder eucalypt woodlands of south-western Australia

2018 ◽  
Vol 43 (6) ◽  
pp. 681-695 ◽  
Author(s):  
Carl R. Gosper ◽  
Colin J. Yates ◽  
Garry D. Cook ◽  
Judith M. Harvey ◽  
Adam C. Liedloff ◽  
...  
Keyword(s):  
Conceptual Model ◽  
Western Australia ◽  
Vegetation Dynamics ◽  
Obligate Seeder ◽  
Eucalypt Woodlands

scholarly journals Enabling an effective knowledge and information flow between the phases of building construction and facilities management

Facilities ◽  
2018 ◽  
Vol 36 (3/4) ◽  
pp. 151-170 ◽  
Author(s):  
Adeline Zhu Teng Tan ◽  
Atiq Zaman ◽  
Monty Sutrisna
Keyword(s):  
Life Cycle ◽  
Knowledge Sharing ◽  
Conceptual Model ◽  
Information Flow ◽  
Western Australia ◽  
Construction Projects ◽  
Content Type ◽  
Handover Process ◽  
Information Gaps ◽  
Integrated Knowledge

Purpose The purpose of this study is to investigate ways of transferring knowledge and information during the life-cycle phases of construction projects, particularly between the construction and occupancy phases, and to find an approach to minimise knowledge and information gaps during the handover process. Design/methodology/approach The study applied a qualitative approach involving a literature review and an archival analysis of information flow in the studied cases of a construction project, followed by a cross-cases analysis and expert interviews. Data on information flow were collected from three cases of building construction projects in Perth, Western Australia. In addition, a total of 18 local facilities management experts were interviewed to identify the key reasons of knowledge and information gaps and to propose an effective knowledge flow model. Findings The findings of this study indicated a significant knowledge and information gap, which exists during the handover process in construction projects in Western Australia. The findings of case analysis and expert interviews identified that the project handover guidelines were often ignored in construction projects in Western Australia, and the handover phase was not given the same priority as the design and construction phases by most of the project stakeholders, which led to information and knowledge gaps between the project construction and post-occupancy phases. The study conducted, integrated knowledge and information flow modelling to analyse the knowledge and information gaps followed by mapping the gaps against existing knowledge sharing frameworks (KSFs) before proposing an integrated knowledge sharing conceptual model to improve current practice and to enhance the information flow during the various phases of the construction project life cycle. Research limitations/implications The study is based on three cases in Perth, Western Australia, and thus the findings and recommendations are contextual. Whilst laying a good foundation to do so, further research is needed to investigate more cases in Western Australia and beyond to fully generalise the findings from this study. Originality/value The study contributes to improve the handover process and information flows in project life-cycle phases in Western Australia and develop an information flow model followed by bringing together existing KSFs, namely, the open communication channel (OCC), soft landing framework (SLF) and building information modelling (BIM), to propose an integrated knowledge sharing conceptual model. The methodology used here to analyse the information flow in a diagrammatic manner, the mapping of FM issues against the KSFs’ capabilities and a conceptual model to facilitate change in the industry’s silo mindset are the main contributions of this paper.

scholarly journals Rainfall intermittency and vegetation feedbacks in drylands

2007 ◽  
Vol 4 (6) ◽  
pp. 4241-4264 ◽  
Author(s):  
M. Baudena ◽  
A. Provenzale
Keyword(s):  
Beneficial Effect ◽  
Conceptual Model ◽  
Vegetation Dynamics ◽  
Soil Layer ◽  
The Other ◽  
Plant Colonization ◽  
Dynamical Processes ◽  
Plant Transpiration ◽  
Vegetation Feedbacks

Abstract. We discuss a simplifed, conceptual model for the dynamics of the soil-vegetation system in drylands. The model considers the different dynamical processes taking place in vegetated and non-vegetated soil and it distinguishes between the upper soil layer, where rapid evaporation dominates, and the deeper root layer where only plant transpiration takes place. We explore the role of rainfall intermittency and of different plant colonization strategies, and discuss in detail the effect of two different vegetation feedbacks: reduced evaporation due to plant shading and increased infiltration in vegetated areas. The results of the analysis indicate that both temporal rainfall intermittency and the shading/infiltration feedbacks have a beneficial effect on vegetation. However, it turns out that in this model rainfall intermittency and vegetation feedbacks have almost a mutually exclusive role: whenever one of these two components is present, the addition of the other does not further affect vegetation dynamics in a significant way.

Patterns of landscape fire and predicted vegetation response in the North Kimberley region of Western Australia

2003 ◽  
Vol 12 (4) ◽  
pp. 369 ◽  
Author(s):  
Rohan Fisher ◽  
Tom Vigilante ◽  
Cameron Yates ◽  
Jeremy Russell-Smith
Keyword(s):  
Western Australia ◽  
Fire History ◽  
Landsat Imagery ◽  
Weather Conditions ◽  
Fire Regimes ◽  
Interval Data ◽  
Obligate Seeder ◽  
The North ◽  
The Status ◽  
Modelling Studies

The paper reports on the development of a decadal fire history, 1990–1999, derived from Landsat imagery, and associated assessment of landscape-scale patterns, in a remote, sparsely human-populated region of the high rainfall zone of monsoonal north-western Australia. The assembled fire history confirms observations, derived from coarser-scale imagery, that substantial areas of the North Kimberley are burnt each year. The annual mean extent of burning was 31% (albeit involving marked inter-annual variability), with most burning occurring in the latter part of the dry season under relatively severe fire weather conditions. Extent of burning was found to be associated with intensity of landuse; most burning occurred on pastoral lands, particularly in association with more fertile basalt soils. Based on previous modelling studies, predicted effects of contemporary fire regimes include increased development of woody regeneration size-classes, especially on non-basalt substrates. In contrast, on sandstone-derived substrata, fire interval data indicate that longer-lived obligate-seeder shrub species are likely to be suppressed and ultimately displaced by contemporary fire regimes. Such observations are supported by recent evidence of regional collapse of the long-lived obligate seeder tree species, Callitris intratropica. Collectively, assembled data point to the need to undertake a thorough appraisal of the status of regional biota in this remote, ostensibly ecologically intact region.

scholarly journals Rainfall intermittency and vegetation feedbacks in drylands

2008 ◽  
Vol 12 (2) ◽  
pp. 679-689 ◽  
Author(s):  
M. Baudena ◽  
A. Provenzale
Keyword(s):  
Beneficial Effect ◽  
Conceptual Model ◽  
Vegetation Dynamics ◽  
Soil Layer ◽  
The Other ◽  
Plant Colonization ◽  
Dynamical Processes ◽  
Plant Transpiration ◽  
Vegetation Feedbacks

Abstract. We discuss a simplifed, conceptual model for the dynamics of the soil-vegetation system in drylands. The model considers the different dynamical processes taking place in vegetated and non-vegetated soil and it distinguishes between the upper soil layer, where rapid evaporation dominates, and the deeper root layer where only plant transpiration takes place. We explore the role of rainfall intermittency and of different plant colonization strategies, and discuss in detail the effect of two different vegetation feedbacks: reduced evaporation due to plant shading and increased infiltration in vegetated areas. The results of the analysis indicate that both temporal rainfall intermittency and the shading/infiltration feedbacks have a beneficial effect on vegetation. However, it turns out that in this model rainfall intermittency and vegetation feedbacks have almost a mutually exclusive role: whenever one of these two components is present, the addition of the other does not further affect vegetation dynamics in a significant way.

Vegetation Dynamics

2016 ◽  
Author(s):  
Derek Eamus ◽  
Alfredo Huete ◽  
Qiang Yu
Keyword(s):  
Vegetation Dynamics
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