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Ecologically relevant measures of tolerance to potentially lethal temperatures
TLDR
It is argued here that ramping assays are useful in capturing aspects of ecological relevance even though there is potential for confounding effects of other stresses that can also influence thermal limits in nature.
Spatial variation in plant interactions across a severity gradient in the sub-Antarctic
TLDR
This study provides support for the stress–gradient hypothesis in the sub-Antarctic, but also demonstrates fine-scale directional spatial patterns between multiple species nested within the severity gradient.
TRY plant trait database - enhanced coverage and open access.
TLDR
The extent of the trait data compiled in TRY is evaluated and emerging patterns of data coverage and representativeness are analyzed to conclude that reducing data gaps and biases in the TRY database remains a key challenge and requires a coordinated approach to data mobilization and trait measurements.
Soil moisture's underestimated role in climate change impact modelling in low-energy systems.
TLDR
Soil moisture is a key driver of vegetation properties, both at the species and community level, even in this low-energy system, despite having a similar or greater influence than soil temperature, pH and solar radiation.
Extrapolating population size from the occupancy-abundance relationship and the scaling pattern of occupancy.
TLDR
SPO models are recommended for assemblage-scale regional abundance estimation based on spatially explicit presence-absence data, due to OAR models assuming environmental homogeneity and yielding scale-dependent estimates.
Plant dispersal in the sub‐Antarctic inferred from anisotropic genetic structure
TLDR
The efficacy of combining fine‐scale SGS analyses with isotropic and anisotropic spatial autocorrelation techniques to infer the impact of wind patterns on plant dispersal processes is demonstrated.
Horizontal, but not vertical, biotic interactions affect fine-scale plant distribution patterns in a low-energy system.
TLDR
The explicit consideration of multiple biotic interactions reveals that plant-plant interactions exert control over the fine-scale distribution of vascular species that is comparable to abiotic drivers and considerably stronger than herbivores in this low-energy system.
Thermal biology, population fluctuations and implications of temperature extremes for the management of two globally significant insect pests.
TLDR
Evidence suggests that low temperatures limit populations in the Western Cape, South Africa and likely do so elsewhere, and the sterile insect technique may prove profitable as climates change given that laboratory-reared tsl flies have an advantage under warmer conditions.
Ontogenetic shifts in plant interactions vary with environmental severity and affect population structure.
TLDR
The hypothesis that ontogenetic shifts in interactions are delayed under increasingly severe conditions is tested by examining the interaction between a grass and a cushion plant along two severity gradients, demonstrating that the plant-plant interaction impacts A. magellanica population structure more strongly than habitat conditions.
The Use of Size as an Estimator of Age in the Subantarctic Cushion Plant, Azorella selago (Apiaceae)
TLDR
Using a simulation model, the accuracy of age estimates was shown to vary with temporal variation in plant growth rate and plant size, and the model remains a valuable tool for estimating plant ages in an environment where many related techniques can not be applied.
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