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Spatially-explicit competition indices and the analysis of mixed-species plantings with the Simile modelling environment
- FOREST ECOLOGY AND MANAGEMENT
, 2006
"... Individual-based modelling and analysis of forest experiments has been made more accessible to researchers with the advent of modelling environments like Simile from www.simulistics.com. Individual-based analyses of tree growth data offer insights not possible with plot-based analyses, especially wh ..."
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Cited by 13 (10 self)
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Individual-based modelling and analysis of forest experiments has been made more accessible to researchers with the advent of modelling environments like Simile from www.simulistics.com. Individual-based analyses of tree growth data offer insights not possible with plot-based analyses, especially when the original experimental design has been compromised by mortality or other unforeseen events. The paper illustrates how Simile can be used for individual-based analyses of mixed plantings, and how it can be used to explore the consequences of the resulting statistical models. A mixed-species planting of Eucalyptus pellita and Acacia peregrina is used to illustrate possibilities.
Negative plant soil feedback and positive species interaction in a herbaceous plant community. Plant Ecol
, 2005
"... Abstract Increasing evidence shows that facilitative interaction and negative plant-soil feedback are driving factors of plant population dynamics and community processes. We studied the intensity and the relative impact of negative feedback on clonal growth and seed germination of Scirpus holoscho ..."
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Abstract Increasing evidence shows that facilitative interaction and negative plant-soil feedback are driving factors of plant population dynamics and community processes. We studied the intensity and the relative impact of negative feedback on clonal growth and seed germination of Scirpus holoschoenus, a 'ring' forming sedge dominant in grazed grassland, and the consequences for species coexistence. The structure of aboveground tussocks was described. A Lithium tracer assessed belowground distribution of functional roots. Seed rain and seedling emergence were compared for different positions in relation to Scirpus tussocks. Soil bioassays were used to compare growth on soil taken from inside and outside Scirpus tussocks of four coexisting species (Mentha acquatica, Pulicaria dysenterica, Scirpus holoschoenus and Dittrichia viscosa). We also compared plant performance of dominant plant species inside and outside Scirpus tussocks in the field. The 'ring' shaped tussocks of S. holoschoenus were generated by centrifugal rhizome development. Roots were functional and abundant under the tillers and extending outside the tussocks. The large roots mats that were present in the inner tussock zone were almost all dead. Seedling emergence and growth both showed a strong negative feedback of Scirpus in the inner tussock zone. Scirpus clonal development strongly reduced grass biomass. In the degenerated tussock zone, Pulicaria and Mentha mortality was lower, and biomass of individual plants and seed production were higher. This positive indirect interaction could be related to species-specific affinity to soil conditions generated by Scirpus, and interspecific competitive release in the degenerated tussock zone. We conclude that Scirpus negative feedback affects its seedling emergence and growth contributing to the development of the degenerated inner tussock zone. Moreover, this enhances species coexistence through facilitative interaction because the colonization of the inner tussock zone is highly species-specific.
Review PERSPECTIVES ON BIODIVERSITY
"... ABSTRACT: Biodiversity issues in Brazil have reached a critical point. On one hand, biodiversity science is increasing in quality and quantity, however on the other, habitat destruction in all major biomes still maintain alarmingly high rates. This paradox, from a scientific perspective, has two cen ..."
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ABSTRACT: Biodiversity issues in Brazil have reached a critical point. On one hand, biodiversity science is increasing in quality and quantity, however on the other, habitat destruction in all major biomes still maintain alarmingly high rates. This paradox, from a scientific perspective, has two central tenets that scientists should focus on. First, although science related to biodiversity is of high standard in Brazil as compared to that of peers in the world, it is still not at the leading edge of research. Second, the wealth of information built up by strong research programmes, such as Biota/Fapesp- to which this special issue of Scientia Agricola is dedicated – is beginning to help decision-makers to improve precision and quality of their decisions concerning the environment, but still much is left to be done in this respect. Therefore, I discuss some of the biodiversity issues that remain controversial and demand fast scientific growth. Tackling them Brazil may finally reach the leading edge of biodiversity research. Finally, I discuss how communication between scientists and decision-makers and the general public may be improved, highlighting how a strong education project is urgently needed from kindergarten to graduate programmes in order to solve the two problems above mentioned and definitely crack the paradox biodiversity knowledge vs. biodiversity destruction.
unknown title
, 2006
"... Spatially-explicit competition indices and the analysis of mixed-species plantings with the Simile modelling environment ..."
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Spatially-explicit competition indices and the analysis of mixed-species plantings with the Simile modelling environment
^Department o f Ecosystem and
"... Soil fungal pathogens and the relationship between plant diversity and productivity ..."
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Soil fungal pathogens and the relationship between plant diversity and productivity
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"... Spatially-explicit competition indices and the analysis of mixed-species plantings with the Simile modelling environment ..."
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Spatially-explicit competition indices and the analysis of mixed-species plantings with the Simile modelling environment
Funding Information Funding was provided by UC Davis President’s Undergraduate Fellowship
, 2013
"... na€ıve to a grass invasion ..."
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"... Spatially-explicit competition indices and the analysis of mixed-species plantings with the Simile modelling environment ..."
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Spatially-explicit competition indices and the analysis of mixed-species plantings with the Simile modelling environment
Plant litter has been reported to induce both positive
"... Singh et al. 1999) influences on the regeneration and ..."
