Travis E. Huxman
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View article: Human‐Mediated Dispersal Routes Structure Sahara Mustard Genomics
Human‐Mediated Dispersal Routes Structure Sahara Mustard Genomics Open
Humans have facilitated the spread and evolution of invasive species, a pattern that has accelerated with the globalisation of trade and societal development. Consequently, the invasiveness of a species may be determined not only by how ma…
View article: Ephemeral flows and vegetation productivity: Insights for desert conservation
Ephemeral flows and vegetation productivity: Insights for desert conservation Open
In desert environments, infrequent but intense rainfall events drive ephemeral flows that shape the landscape, influence vegetation patterns, and sustain biodiversity. However, despite their ecological and hydrological importance, ephemera…
View article: Interactions among nutrients govern the global grassland biomass–precipitation relationship
Interactions among nutrients govern the global grassland biomass–precipitation relationship Open
Ecosystems are experiencing changing global patterns of mean annual precipitation (MAP) and enrichment with multiple nutrients that potentially colimit plant biomass production. In grasslands, mean aboveground plant biomass is closely rela…
View article: Plant traits reveal that biotic resistance to invasibility is shaped by slope aspect
Plant traits reveal that biotic resistance to invasibility is shaped by slope aspect Open
During community assembly, species' traits interact with environmental conditions and influence biotic interactions. Learning how traits of non‐native species enable them to successfully navigate these interacting biotic and abiotic filter…
View article: Climate change and agricultural workers in the Michoacán avocado industry: Opportunities and trade-offs in coupling plant and human health for sustainability
Climate change and agricultural workers in the Michoacán avocado industry: Opportunities and trade-offs in coupling plant and human health for sustainability Open
The rapidly expanding demand for avocado production places significant strain on agricultural communities and associated ecosystems. As temperature increases and water scarcity worsens, the avocado, a high-water demanding crop, faces decli…
View article: Effects of Non-Native Annual Plant Removal on Native Species in Mediterranean-Climate Shrub Communities
Effects of Non-Native Annual Plant Removal on Native Species in Mediterranean-Climate Shrub Communities Open
Removal of non-native plants is known to increase overall native cover within degraded communities that contain at least a small percentage of native plant cover. We investigated the mechanisms behind this pattern, asking whether removal o…
View article: Three-way species interactions reverse the positive pairwise effects of two natives on an exotic invader
Three-way species interactions reverse the positive pairwise effects of two natives on an exotic invader Open
The disruptive effects of tertiary species on otherwise positive pairwise species interactions (e.g. context-dependent parasitism in pollinator syndromes) is well-known. However, few—if any—studies have investigated how invasive plants aff…
View article: Warming as a Driver of Vegetation Loss in the Sonoran Desert of California
Warming as a Driver of Vegetation Loss in the Sonoran Desert of California Open
Dryland ecosystems cover large regions of the Earth and have important impacts on global biogeochemistry and the carbon cycle. The plant species that occupy dryland environments have traits that enable them to withstand harsh environmental…
View article: Sahara mustard as a major threat to desert biodiversity in the southwest United States and the need to integrate contemporary methods to understand its biology
Sahara mustard as a major threat to desert biodiversity in the southwest United States and the need to integrate contemporary methods to understand its biology Open
Understanding the nature of biological invasions is an important grand challenge, and we share Prof. Hedrick's concern for developing good theory and mechanistic understanding of the ecological and evolutionary dynamics of invasion (Hedric…
View article: Impacts of competition and herbivory on native plants in a community‐engaged, adaptively managed restoration experiment
Impacts of competition and herbivory on native plants in a community‐engaged, adaptively managed restoration experiment Open
Restoring biodiversity to degraded sites in the wildland–urban interface is challenging due to many factors, including competition with non‐native species and increased herbivore pressure. In a unique collaboration between land managers, e…
View article: Cryptic phenology in plants: Case studies, implications, and recommendations
Cryptic phenology in plants: Case studies, implications, and recommendations Open
Plant phenology—the timing of cyclic or recurrent biological events in plants—offers insight into the ecology, evolution, and seasonality of plant‐mediated ecosystem processes. Traditionally studied phenologies are readily apparent, such a…
View article: Multiple introductions and population structure during the rapid expansion of the invasive Sahara mustard (<i>Brassica tournefortii</i>)
Multiple introductions and population structure during the rapid expansion of the invasive Sahara mustard (<i>Brassica tournefortii</i>) Open
The specific mechanisms that result in the success of any species invasion case are difficult to document. Reproductive strategies are often cited as a primary driver of invasive success, with human activities further facilitating invasion…
View article: Seasonal and drought‐related changes in leaf area profiles depend on height and light environment in an Amazon forest
Seasonal and drought‐related changes in leaf area profiles depend on height and light environment in an Amazon forest Open
Summary Seasonal dynamics in the vertical distribution of leaf area index ( LAI ) may impact the seasonality of forest productivity in Amazonian forests. However, until recently, fine‐scale observations critical to revealing ecological mec…
View article: Analyzing High‐Frequency Soil Respiration Using a Probabilistic Model in a Semiarid, Mediterranean Climate
Analyzing High‐Frequency Soil Respiration Using a Probabilistic Model in a Semiarid, Mediterranean Climate Open
High‐frequency (subhourly) changes in soil respiration ( Rs ), a critical component of the carbon cycle, are not well documented in semiarid ecosystems. We investigate the response of Rs to subhourly soil temperature ( T soil) and soil vol…
View article: Early life history responses and phenotypic shifts in a rare endemic plant responding to climate change
Early life history responses and phenotypic shifts in a rare endemic plant responding to climate change Open
We studied how a rare, endemic alpine cushion plant responds to the interactive effects of warming and drought. Overall, we found that both drought and warming negatively influenced the species growth but that existing levels of phenotypic…
View article: Controlled Experiments of Hillslope Coevolution at the Biosphere 2 Landscape Evolution Observatory: Toward Prediction of Coupled Hydrological, Biogeochemical, and Ecological Change
Controlled Experiments of Hillslope Coevolution at the Biosphere 2 Landscape Evolution Observatory: Toward Prediction of Coupled Hydrological, Biogeochemical, and Ecological Change Open
Understanding the process interactions and feedbacks among water, porous geological media, microbes, and vascular plants is crucial for improving predictions of the response of Earth’s critical zone to future climatic conditions. However, …
View article: Rapid alignment of functional trait variation with locality across the invaded range of Sahara mustard (<i>Brassica tournefortii</i>)
Rapid alignment of functional trait variation with locality across the invaded range of Sahara mustard (<i>Brassica tournefortii</i>) Open
Premise of Study Mechanisms by which invasive species succeed across multiple novel environmental contexts are poorly understood. Functional traits show promise for identifying such mechanisms, yet we lack knowledge of which functional tra…
View article: Resistance and resilience: ten years of monitoring shrub and prairie communities in Orange County, <scp>CA</scp>,<scp> USA</scp>
Resistance and resilience: ten years of monitoring shrub and prairie communities in Orange County, <span>CA</span>,<span> USA</span> Open
Mediterranean‐climate natural systems have high ecological value, yet the extent of their cover has diminished greatly due to changes in land use. Other stressors, ranging from intense short‐term disturbances such as wildfire to more gradu…
View article: Age‐dependent leaf physiology and consequences for crown‐scale carbon uptake during the dry season in an Amazon evergreen forest
Age‐dependent leaf physiology and consequences for crown‐scale carbon uptake during the dry season in an Amazon evergreen forest Open
Summary Satellite and tower‐based metrics of forest‐scale photosynthesis generally increase with dry season progression across central Amazônia, but the underlying mechanisms lack consensus. We conducted demographic surveys of leaf age com…
View article: Data from: Age‐dependent leaf physiology and consequences for crown‐scale carbon uptake during the dry season in an Amazon evergreen forest
Data from: Age‐dependent leaf physiology and consequences for crown‐scale carbon uptake during the dry season in an Amazon evergreen forest Open
* Satellite and tower-based metrics of forest-scale photosynthesis generally increase with dry season progression across central Amazônia, but the underlying mechanisms lack consensus. * We conducted demographic surveys of leaf age composi…
View article: Temperature response surfaces for mortality risk of tree species with future drought
Temperature response surfaces for mortality risk of tree species with future drought Open
Widespread, high levels of tree mortality, termed forest die-off, associated with drought and rising temperatures, are disrupting forests worldwide. Drought will likely become more frequent with climate change, but even without more freque…
View article: Predicting drought tolerance from slope aspect preference in restored plant communities
Predicting drought tolerance from slope aspect preference in restored plant communities Open
Summary Plants employ strategies of tolerance, endurance, and avoidance to cope with aridity in space and time, yet understanding the differential importance of such strategies in determining patterns of abundance across a heterogeneous la…
View article: Ecosystem Composition Controls the Early Fate of Rare Earth Elements during Incipient Soil Genesis
Ecosystem Composition Controls the Early Fate of Rare Earth Elements during Incipient Soil Genesis Open
The rare earth elements (REE) are of increasing importance in a variety of science and economic fields, including (bio)geosciences, paleoecology, astrobiology, and mining. Despite their great promise, REE fractionation in early plant-micro…
View article: Plant hydraulics as a central hub integrating plant and ecosystem function: meeting report for ‘Emerging Frontiers in Plant Hydraulics’ (Washington, DC, May 2015)
Plant hydraulics as a central hub integrating plant and ecosystem function: meeting report for ‘Emerging Frontiers in Plant Hydraulics’ (Washington, DC, May 2015) Open
Water plays a central role in plant biology and the efficiency of water transport throughout the plant affects both photosynthetic rate and growth, an influence that scales up deterministically to the productivity of terrestrial ecosystems…
View article: Leaf development and demography explain photosynthetic seasonality in Amazon evergreen forests
Leaf development and demography explain photosynthetic seasonality in Amazon evergreen forests Open
Leaf seasonality in Amazon forests Models assume that lower precipitation in tropical forests means less plant-available water and less photosynthesis. Direct measurements in the Amazon, however, show that production remains constant or in…