Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Melissa J. Dobbie"'
Publikováno v:
Geoderma. :10-18
Soil profile data are a collection of soil property values associated with a series of non-overlapping depth intervals. The CSIRO National Soil (NatSoil) Archive database contains full soil profile data recorded for over 56,000 such depth intervals a
Autor:
David Dail, Melissa J. Dobbie
Publikováno v:
Ecological Indicators. 29:270-277
A composite index is a combination of various sources of information known as indicators, measured in or of a system in order to provide a summary of the system that is itself not directly measurable. For the index to be useful and meaningful, its co
Publikováno v:
Environmental Monitoring and Assessment. 185:3721-3733
Riparian condition is commonly measured as part of stream health monitoring programs as riparian vegetation provides an intricate linkage between the terrestrial and aquatic ecosystems. Field surveys of a riparian zone provide comprehensive riparian
Autor:
Melissa J. Dobbie, Alan H. Welsh
Publikováno v:
Australian & New Zealand Journal of Statistics. 43:431-444
This paper extends the two-component approach to modelling count data with extra zeros, considered by Mullahy (1986), Heilbron (1994) and Welsh et al. (1996), to take account of possible serial dependence between repeated observations. Generalized es
Autor:
Melissa J. Dobbie, Alan H. Welsh
Publikováno v:
Statistical Modelling. 1:65-80
We explore the possibility of modelling zero-inflated count data using the Neyman type A distribution. We extend three parameterisations of the Neyman type A distribution to allow their parameters to depend on covariates. We develop models which rela
Autor:
David Dail, Melissa J. Dobbie
Publikováno v:
Encyclopedia of Environmetrics.
Autor:
Bronwyn Harch, Neil McKenzie, Melissa J. Dobbie, Ichsani Wheeler, Jeff Baldock, Petra M. Kuhnert, David Clifford, Alex B. McBratney
Publikováno v:
Digital Soil Assessments and Beyond ISBN: 9780429097461
We examine some variations of standard probability designs that preferentially sample sites based on how easy they are to access. Preferential sampling designs deliver unbiased estimates of mean and sampling variance and will ease the burden of data
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6cd5c3b833feb04abf4427b8b68c8352
https://doi.org/10.1201/b12728-45
https://doi.org/10.1201/b12728-45
Autor:
Melissa J. Dobbie, Peter M. Negus
Publikováno v:
Environmental monitoring and assessment. 185(9)
Implementing a statistically valid and practical monitoring design for large-scale stream condition monitoring and assessment programs can be difficult due to factors including the likely existence of a diversity of ecosystem types such as ephemeral
Publikováno v:
Statist. Surv. 2 (2008), 113-153
Spatial designs for monitoring stream networks, especially ephemeral systems, are typically non-standard, `sparse' and can be very complex, reflecting the complexity of the ecosystem being monitored, the scale of the population, and the competing mul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::44d326d194369bcbc15008a5851fde27
http://arxiv.org/abs/0808.4057
http://arxiv.org/abs/0808.4057
Autor:
David Clifford, Melissa J. Dobbie
Publikováno v:
Marine and Freshwater Research. 66:95
Estuaries are an important link between terrestrial and marine ecosystems, so assessing their health and what influences it can help guide future ecosystem monitoring and management. But estuaries can be complex and dynamic systems, so summarising he