Amy E. Zanne's research while affiliated with University of Miami and other places

Publications (156)

Article
Coevolution has driven speciation and evolutionary novelty in functional traits across the Tree of Life. Classic coevolutionary syndromes such as plant–pollinator, plant–herbivore, and host–parasite have focused strongly on the fitness consequences during the lifetime of the interacting partners. Less is known about the consequences of coevolved tr...
Article
Trees provide critical contributions to human well-being. They sequester and store greenhouse gasses, filter air pollutants, provide wood, food, and other products, among other benefits. These benefits are threatened by climate change, fires, pests and pathogens. To quantify the current value of the flow of ecosystem services from U.S. trees, and t...
Article
Microbial organisms, environmental conditions, and their interactions govern many ecosystem processes. Recent studies have highlighted the importance of priority effects, that is, the identity of potential decomposers present early in community assembly, in determining resulting decay rates especially for wood. In diverse forests, available woody s...
Preprint
Full-text available
Animals, such as termites, have largely been overlooked as global-scale drivers of biogeochemical cycles 1,2 , despite site-specific findings 3,4 . Deadwood turnover, an important component of the carbon cycle, is driven by multiple decay agents. Studies have focused on temperate systems 5,6 , where microbes dominate decay ⁷ . Microbial decay is se...
Article
Full-text available
We introduce the AusTraits database - a compilation of values of plant traits for taxa in the Australian flora (hereafter AusTraits). AusTraits synthesises data on 448 traits across 28,640 taxa from field campaigns, published literature, taxonomic monographs, and individual taxon descriptions. Traits vary in scope from physiological measures of per...
Article
Full-text available
Recent studies have demonstrated that ecological processes that shape community structure and dynamics change along environmental gradients. However, much less is known about how the emergence of the gradients themselves shape the evolution of species that underlie community assembly. In this study, we address how the creation of novel environments...
Article
Full-text available
Termites are important ecosystem engineers in tropical habitats, with different feeding groups able to decompose wood, grass, litter, and soil organic matter. In most tropical regions, termite abundance and species diversity are assumed to increase with rainfall, with highest levels found in rainforests. However, in the Australian tropics, this pat...
Article
Plant species vary in how they regulate moisture and this has implications for their flammability during wildfires. We explored how fuel moisture is shaped by variation within six hydraulic traits: saturated moisture content, cell wall rigidity, cell solute potential, symplastic water fraction and tissue capacitance. Using pressure‐volume curves, w...
Preprint
Full-text available
We introduce the AusTraits database - a compilation of measurements of plant traits for taxa in the Australian flora (hereafter AusTraits). AusTraits synthesises data on 375 traits across 29230 taxa from field campaigns, published literature, taxonomic monographs, and individual taxa descriptions. Traits vary in scope from physiological measures of...
Preprint
Full-text available
Biogeographic events occurring in the deep past can contribute to the structure of modern ecological communities. However, little is known about how the emergence of environmental gradients shape the evolution of species that underlie community assembly. In this study, we address how the creation of novel environments lead to community assembly via...
Article
The tree seed mycobiome has received little attention despite its potential role in forest regeneration and health. The aim of our study was to analyze the processes shaping the composition of seed fungal communities in natural forests as seeds transition from the mother plant to the ground for establishment. We used metabarcoding approaches and co...
Chapter
Assessment of endophytic and saprotrophic microbial communities from wood-extracted DNA presents challenges due to the presence of surface microbes that contaminate samples and plant compounds that act as inhibiting agents. Here, we describe a method for decontaminating, sampling, and processing wood at various stages of decay for high-throughput e...
Article
Full-text available
Global biodiversity policy is at a crossroads. Recent global assessments of living nature (1, 2) and climate (3) show worsening trends and a rapidly narrowing window for action. The Convention on Biological Diversity (CBD) has recently announced that none of the 20 Aichi targets for biodiversity it set in 2010 has been reached and only six have bee...
Article
Full-text available
Invasive plants have the potential to affect decomposition both directly, by introducing novel substrates that may differ from native species in key structural or chemical properties, and indirectly through changes to soil properties and microbial communities. The relative importance of these two mechanisms is unclear, especially with regard to woo...
Article
Diverse communities of fungi and bacteria in deadwood mediate wood decay. While rates of decomposition vary greatly among woody species and spatially‐distinct habitats, the relative importance of these factors in structuring microbial communities and whether these shift over time remain largely unknown. We characterized fungal and bacterial diversi...
Article
As the primary decomposers of organic material in terrestrial ecosystems, fungi are critical agents of the global carbon cycle. Yet our ability to link fungal community composition to ecosystem functioning is constrained by a limited understanding of the factors accounting for different wood decomposition rates among fungi. Here we examine which tr...
Article
Full-text available
Plant traits—the morphological, anatomical, physiological, biochemical and phenological characteristics of plants—determine how plants respond to environmental factors, affect other trophic levels, and influence ecosystem properties and their benefits and detriments to people. Plant trait data thus represent the basis for a vast area of research sp...
Article
High-throughput sequencing (e.g., amplicon and shotgun) has provided new insight into the diversity and distribution of fungi around the globe, but developing a framework to understand this diversity has proved challenging. Here we review key ecological strategy theories developed for macro-organisms and discuss ways that they can be applied to fun...
Article
Fungi play many essential roles in ecosystems. They facilitate plant access to nutrients and water, serve as decay agents that cycle carbon and nutrients through the soil, water and atmosphere, and are major regulators of macro‐organismal populations. Although technological advances are improving the detection and identification of fungi, there sti...
Preprint
Trees provide critical contributions to human well-being. They sequester and store greenhouse gasses, filter air pollutants, and provide wood, food, and other products, among other benefits. However, global change threatens these benefits. To quantify the monetary value of US trees and the threats they face, we combine macroevolutionary and economi...
Article
Whether global change will drive changing forests from net carbon (C) sinks to sources relates to how quickly deadwood decomposes. Because complete wood mineralization takes years, most experiments focus on how traits, environments and decomposer communities interact as wood decay begins. Few experiments last long enough to test whether drivers cha...
Preprint
Full-text available
Fungi play many essential roles in ecosystems. They facilitate plant access to nutrients and water, serve as decay agents that cycle carbon and nutrients through the soil, water and atmosphere, and are major regulators of macro-organismal populations. Although technological advances are improving the detection and identification of fungi, there sti...
Preprint
High-throughput sequencing has provided new insight into the diversity and distribution of fungi around the globe, but developing a framework to understand this diversity has proved challenging. Here we review key strategy theories developed for macro-organisms and discuss ways they can be applied to fungi. We suggest that while certain elements ma...
Article
The era of big biodiversity data has led to rapid, exciting advances in the theoretical and applied biological, ecological and conservation sciences. While large genetic, geographic and trait databases are available, these are neither complete nor random samples of the globe. Gaps and biases in these databases reduce our inferential and predictive...
Preprint
Full-text available
Trees, as foundation species, play a pivotal role in the species interaction networks that constitute forest ecosystems. From the seed stage, they interact with microbial communities that affect their growth, health and fitness. Despite their eco-evolutionary importance, the processes shaping seed microbial communities in natural forests have recei...
Article
Environmental forces and biotic interactions, both positive and negative, structure ecological communities, but their relative roles remain obscure despite strong theory. For instance, ecologically similar species, based on the principle of limiting similarity, are expected to be most competitive and show negative interactions. Specious communities...
Preprint
Full-text available
Deadwood is a large aboveground carbon (C) pool that regulates how forests respond to global change. Due to slow decomposition, CWD delays C emissions following major forest disturbances so predicting how carbon balance will respond to changing disturbance regimes requires identifying factors that influence the full temporal trajectory of wood deca...
Article
Trees, as foundation species, play a pivotal role in the species interaction networks that constitute forest Ecosystems. From the seed stage, they interact with microbial communities that affect their growth, health and fitness. Despite their eco-evolutionary importance, the processes shaping seed microbial communities in natural forests have recei...
Preprint
Full-text available
Rationale The era of big biodiversity data has led to rapid, exciting advances in theoretical and applied biological, ecological and conservation sciences. While large genetic, geographic and trait databases are available, these are neither complete nor random samples of the globe. Biases in species absence in these databases create problems, reduc...
Article
Full-text available
Oaks are an important part of our natural and cultural heritage. Not only are they ubiquitous in our most common landscapes 1 but they have also supplied human societies with invaluable services, including food and shelter, since prehistoric times 2 . With 450 species spread throughout Asia, Europe and America 3 , oaks constitute a critical global...
Article
Full-text available
When standing dead trees (snags) fall, they have major impacts on forest ecosystems. Snag fall can redistribute wildlife habitat and impact public safety, while governing important carbon (C) cycle consequences of tree mortality because ground contact accelerates C emissions during deadwood decay. Managing the consequences of altered snag dynamics...
Data
Detailed description of model simplification procedure. (DOCX)
Data
Compilation of wood durability estimates for species in the eastern United States drawn from various sources. The least resistant category was set as 0 and the most resistant category as 4. Sources that used ambiguous designations (e.g. non-resistant or slightly resistant) were given the average numeric score of the corresponding categories (i.e. 0...
Data
Snags of intermediate decay class are less likely to fall in locations with faster average wind speeds. Thick central curve corresponds to the posterior mean for the effect of average wind speed at 10m on decay class 2 snag persistence and the transparent curve overlay represents uncertainty by showing 100 curves drawn from the posterior distributi...
Data
The predicted proportion of snags standing closely corresponds to the observed proportion of snags standing when aggregated by 205 species. Symbol diameter is scaled by species abundance. (PDF)
Data
BUGS language code for the simplified snag fall model. (DOCX)
Data
The predicted proportion of snags standing closely corresponds to the observed proportion of snags standing when aggregated within 16 physiographic classes. Symbol diameter is scaled by the abundance of snags per physiographic class. (PDF)
Data
The predicted proportion of snags standing closely corresponds to the observed proportion of snags standing when aggregated within 151 1.7°x1.7° spatial grid cells. Symbol diameter is scaled by the abundance of snags per grid cell. (PDF)
Data
Snags occurring in physiographic settings with loose or disturbed soils are significantly more likely to fall compared to snags in settings with standing water. The final column indicates subsets of the data where the 95% CI for the effect excluded 0. (DOCX)
Data
Model selection criteria applied to all first-order non-hierarchical models for snag persistence in every subset of the data. The set of parameters selected via backwards elimination from the fully hierarchical model is indicated in bold. (XLSX)
Article
Full-text available
Roughly 3% of the Earth’s land surface burns annually, representing a critical exchange of energy and matter between the land and atmosphere via combustion. Fires range from slow smouldering peat fires, to low-intensity surface fires, to intense crown fires, depending on vegetation structure, fuel moisture, prevailing climate, and weather condition...
Article
Full-text available
Pest outbreaks are driving tree dieback and major influxes of deadwood into forest ecosystems. Understanding how pulses of deadwood impact the climate system requires understanding which factors influence greenhouse gas production during wood decay. Recent analyses identify stem diameter as an important control, but report effects that vary in magn...
Article
Deadwood in tropical ecosystems represents an important but poorly studied carbon (C) pool. Biologically mediated decay of this pool occurs by both saprotrophic microbes and macro-invertebrates, such as termites. The activity of these decay agents is influenced by abiotic conditions, especially water availability in tropical systems. While saprotro...
Article
Full-text available
Nonlinear relationships between species and their environments are believed common in ecology and evolution, including during angiosperms’ rise to dominance. Early angiosperms are thought of as woody evergreens restricted to warm, wet habitats. They have since expanded into numerous cold and dry places. This expansion may have included transitions...
Article
Premise of the study: Wood density is the top predictor of growth and mortality rates (vital rates) but with modest explanatory power at best. Stronger links to vital rates are expected if wood density is decomposed into its anatomical properties at sapling and adult stages, since saplings and adults differ in wood traits and vital rates. We exami...
Article
Trait-based approaches provide a useful framework to investigate plant strategies for resource acquisition, growth, and competition, as well as plant impacts on ecosystem processes. Despite significant progress capturing trait variation within and among stems and leaves, identification of trait syndromes within fine-root systems and between fine ro...
Article
Full-text available
Deadwood, long recognized as playing an important role in storing carbon and releasing it as CO2 in forest ecosystems, is more recently drawing attention for its potential role in the cycling of other greenhouse trace gases. Across three Northeastern and Central US forests, mean methane (CH4) concentrations in deadwood were 23 times atmospheric lev...
Data
Country-level PSV, SR, and E data used in the text (all commodity plants). (XLSX)
Data
One of the 10 alternative c vectors (consumption PSV, SR, and E derived from these data are graphed in S3 Fig). (XLSX)
Data
One of the 10 alternative c vectors (consumption PSV, SR, and E derived from these data are graphed in S3 Fig). (XLSX)
Data
Country-level consumption PSV, SR, and E data generated with one of the 10 alternative c vectors. (XLSX)
Data
Country-level consumption PSV, SR, and E data generated with one of the 10 alternative c vectors. (XLSX)
Data
Country-level PSV, SR, and E data used in the text (food plants only). (XLSX)
Data
Country-level consumption PSV, SR, and E data generated with one of the 10 alternative c vectors. (XLSX)
Data
Country-level consumption PSV, SR, and E data generated with one of the 10 alternative c vectors. (XLSX)
Data
Model (2)’s contemporaneous marginal effects at various latitudes for all plants. The graphed contemporaneous income per capita marginal effects are equal to estimated γ1+γ2|L| and contemporaneous trade openness marginal effects are equal to estimated γ3+γ4|L| for |L| = 5, 25, 45, and 65 degrees of latitude. All marginal effects are multiplied by 1...
Data
Dataset used to estimate model (3) (all plants). (XLSX)
Data
One of the 10 alternative c vectors (consumption PSV, SR, and E derived from these data are graphed in S3 Fig). (XLSX)
Data
Estimates of model (2) with contemporaneous and once lagged changes in independent variables. We present six estimates of model (2) with dependent variables (defined across all plants) in the first column and contemporaneous change and once lagged (L.1) independent variables in the remaining columns where g indicates annual change in logged country...
Data
Country-level consumption PSV, SR, and E data generated with one of the 10 alternative c vectors. (XLSX)
Data
Estimates of model (2) with contemporaneous and once and twice lagged changes in independent variables. We present six estimates of model (2) with dependent variables (defined across all plants) in the first column and contemporaneous change and once and twice lagged (L.1 and L.2, respectively) independent variables in the remaining columns where g...
Data
Country-level consumption PSV, SR, and E data generated with one of the 10 alternative c vectors. (XLSX)
Article
Full-text available
Increasing trade between countries and gains in income have given consumers around the world access to a richer and more diverse set of commercial plant products (i.e., foods and fibers produced by farmers). According to the economic theory of comparative advantage, countries open to trade will be able to consume more – in terms of volume and diver...
Data
Country-level consumption PSV, SR, and E data generated with one of the 10 alternative c vectors. (XLSX)
Data
Percentage changes in trade openness and real GDP per capita by country between 1992–1994 and 2008–2010. The initial data point for each country (N = 141) is given by their 1992–1994 trade openness and real GDP per capita annual averages. The terminal data point for each country is given by their 2008–2010 trade openness and real GDP per capita ann...
Data
Estimates of model (3) with contemporaneous and once and twice lagged changes in independent variables. We present six estimates of model (3) with dependent variables (defined across all plants) in the first column and contemporaneous change and once and twice lagged (L.1 and L.2) independent variables in the remaining columns where g indicates ann...
Data
One of the 10 alternative c vectors (consumption PSV, SR, and E derived from these data are graphed in S3 Fig). (XLSX)
Data
Sensitivity analysis of weighted mean trends in zonal consumption diversity and richness. When we calculated cjkt for each j, k, and t combination, as measured by Mg, we had to translate all processed food import and export Mg values into their constituent crop Mg using FAOStat conversion rates. For the results presented in the main text we assume...
Data
Country-level consumption PSV, SR, and E data generated with one of the 10 alternative c vectors. (XLSX)