Learn More
Phenotypic traits and their associated trade-offs have been shown to have globally consistent effects on individual plant physiological functions, but how these effects scale up to influence competition, a key driver of community assembly in terrestrial vegetation, has remained unclear. Here we use growth data from more than 3 million trees in over 140,000(More)
Phenotypic traits influence species distributions, but ecology lacks established links between multidimensional phenotypes and fitness for predicting species responses to environmental change. The common focus on single traits rather than multiple trait combinations limits our understanding of their adaptive value, and intraspecific trait covariation has(More)
The promise of “trait-based” plant ecology is one of generalized prediction across organizational and spatial scales, independent of taxonomy. This promise is a major reason for the increased popularity of this approach. Here, we argue that some important foundational assumptions of trait-based ecology have not received sufficient empirical evaluation. We(More)
Most environments harbor large numbers of microbial taxa with ecologies that remain poorly described and characterizing the functional capabilities of whole communities remains a key challenge in microbial ecology. Shotgun metagenomic analyses are increasingly recognized as a powerful tool to understand community-level attributes. However, much of this data(More)
Community assembly involves two antagonistic processes that select functional traits in opposite directions. Environmental filtering tends to increase the functional similarity of species within communities leading to trait convergence, whereas competition tends to limit the functional similarity of species within communities leading to trait divergence.(More)
The Virtual Telescopes in Education (VTIE) project, is providing tools for teaching astronomy in K-12 classrooms using remotely controlled telescopes. VTIE's main goal to promote scientific literacy, including a conceptual understanding of the physical world and the scientific process itself. This paper describes an essential component of VTIE: the(More)
A strategy to increase soil C under pasture-based systems is to increase the root mass inputs or increase rooting depth of plants. Our objective in this study was to measure the seasonal dynamics of root mass and C inputs under two different pasture types (ryegrass-clover vs moderately diverse) that differ in plant diversity and which are commonly used in(More)
Plant traits covary with soil fertility, but determining whether this is the outcome of environmental filtering or plant feedback is not straightforward, especially in long-lived plant communities such as rain forests. Without explicitly accounting for the potential of plant litter to influence soil properties, it is difficult to interpret with confidence(More)
Distance (or distributed) learning, via the Internet in particular, is fast becoming one of the most popular ventures of colleges and universities across the globe. Research on delivery modes and their correlation to student achievement outcomes has shown that students learn better via teletraining mode than face-to-face instruction. 1 , 2 One explanation(More)
Virus-like particles were observed in the giant cells of a mammary adenoma of a snow leopard kept in captivity. Particles that measured 115 to 125 nm in diameter budded from the lamella of endoplasmic reticulum and were studded on their inner surfaces with dense granules (approximately 12 nm) that gave them their unique ultrastructural morphology. Such(More)