A5087198596- Plant and animal studies
- Plant Diversity and Evolution
- Ecology and Vegetation Dynamics Studies
- Species Distribution and Climate Change
- Remote Sensing in Agriculture
- Plant and Fungal Species Descriptions
- Spectroscopy and Chemometric Analyses
- Ethnobotanical and Medicinal Plants Studies
- Botanical Research and Chemistry
- Economic and Environmental Valuation
- Plant Taxonomy and Phylogenetics
- Forest Management and Policy
- Genetic diversity and population structure
- Seed Germination and Physiology
- Fern and Epiphyte Biology
- Geological and Geophysical Studies Worldwide
- Forest ecology and management
- Plant tissue culture and regeneration
- Archaeological and Geological Studies
- Plant Pathogens and Fungal Diseases
- Plant Water Relations and Carbon Dynamics
- Ruminant Nutrition and Digestive Physiology
- Diatoms and Algae Research
- Botany, Ecology, and Taxonomy Studies
- DNA and Biological Computing
University of Maine
2020-2025
University of Minnesota
2016-2022
Ecologie & Evolution
2017
Duke University
2013-2015
Instituto de Pesquisas Jardim Botânico do Rio de Janeiro
2009
Universidade Estadual de Campinas (UNICAMP)
2007-2008
Pontifícia Universidade Católica de Campinas
2007
Species and phylogenetic lineages have evolved to differ in the way that they acquire deploy resources, with consequences for their physiological, chemical structural attributes, many of which can be detected using spectral reflectance form leaves. Recent technological advances assessing optical properties plants offer opportunities detect functional traits organisms differentiate levels biological organization across tree life. Here, we connect leaf-level full range data (400–2400 nm)...
Plants provide the productive basis for all other life, and their diversity is critical Earth's life support systems. Many plant species are at risk extinction due to global change factors, including drought stress, exotic invasions, pathogens, land-use combined with altered disturbance regimes (e.g., fire), application of chemicals, overexploitation. One in five within Plant Kingdom thought be threatened (Kew Royal Botanic Gardens, 2016). Given multifaceted consequences biodiversity...
Summary Leaf reflectance spectra have been increasingly used to assess plant diversity. However, we do not yet understand how vary across the tree of life or evolution leaf traits affects differentiation among species and lineages. Here describe a framework that integrates with phylogenies apply it global dataset over 16 000 leaf‐level (400–2400 nm) for 544 seed species. We test phylogenetic signal in spectra, evaluate their ability classify lineages, characterize evolutionary dynamics. show...
Premise of the Study Evolutionary and biogeographic history, including past environmental change diversification processes, are likely to have influenced expansion, migration, extinction populations, creating evolutionary legacy effects that influence regional species pools composition communities. We consider consequences process in shaping trait evolution assembly oak‐dominated communities throughout continental United States (U.S.). Methods Within U.S. oaks, we tested for phylogenetic...
Trees provide critical contributions to human well-being. They sequester and store greenhouse gasses, filter air pollutants, wood, food, other products, among benefits. These benefits are threatened by climate change, fires, pests pathogens. To quantify the current value of flow ecosystem services from U.S. trees, threats they face, we combine macroevolutionary economic valuation approaches using spatially explicit data about tree species lineages. We find that five key with adequate...
We investigated the origins of 252 Southern Appalachian woody species representing 158 clades to analyze larger patterns biogeographic connectivity around northern hemisphere. tested hypotheses regarding timing disjunctions eastern Asia and among areas North America.We delimited into biogeographically informative clades, compiled sister-area data, generated graphic representations area connections across clades. calculated taxon diversity within plotted divergence times.Of total diversity,...
Reflectance spectroscopy is a non-destructive, rapid, and robust method for estimating functional traits distinguishing species. Spectral reflectance libraries generated from herbarium specimens are an untapped promising resource generating broad phenomic datasets across space, time, We conducted proof-of-concept study using trait data spectra recently dried, pressed leaves, alongside up to 179 years old. assessed the utility transferability of these prediction taxonomic discrimination....
Understanding ecosystem processes on our rapidly changing planet requires integration across spatial, temporal and biological scales. We propose that spectral biology, using tools enable near- to far-range sensing by capturing the interaction of energy with matter domains electromagnetic spectrum, will increasingly ecological insights scales from cells continents. Here, we focus advances spectroscopy in visible short-wave infrared, chlorophyll fluorescence-detecting systems, optical laser...
ABSTRACT Freezing tolerance plays a pivotal role in shaping the distribution and diversification of organisms. We investigated dynamics adaptation to climate potential trade‐offs between stem freezing growth rate 48 Quercus species. Species from colder regions exhibited higher tolerance, lower rates winter‐acclimation than species warmer climates. Despite an evolutionary lag, oaks is closely aligned with its optimal state. Deciduous showed marked variability across their broad climatic...
Summary Leaf reflectance spectroscopy is emerging as an effective tool for assessing plant diversity and function. However, the ability of leaf spectra to detect fine‐scale evolutionary in complicated biological scenarios not well understood. We test if (400–2400 nm) can distinguish species population structure phylogenetic divergence – estimated from genomic data two co‐occurring, hybridizing, ecotypically differentiated Dryas . also analyze correlation among taxonomically diagnostic traits...
Cold poses major physiological challenges to plants, especially long-lived trees. In trees occurring along variable temperature clines, the expected direction and consequences of selection on cold acclimation ability freezing tolerance are not straightforward. Here we estimated in genes at two evolutionary timescales all seven species American live oaks (Quercus subsection Virentes). Two response candidate were chosen: ICE1, a key gene pathway, HOS1, which modulates by negatively regulating...
Abstract Separate and combined Maximum Likelihood Bayesian analyses of the papilionoid legume genus Poecilanthe sensu lato (Leguminosae) other Genistoid genera were performed using molecular (nuclear ribosomal chloroplast matK) morphological data. The data are in excellent agreement that is paraphyletic with respect to tribe Brongniartieae. Each three independent lineages combines a morphological, geographical, ecological distinction. They will be ranked at level stricto recircumscribed...
Canopy foliar traits serve as crucial indicators of plant health and productivity, forming a vital link between conditions ecosystem dynamics. In this study, the use hyperspectral data for white pine needle damage (WPND) detection was investigated first time. Eastern White Pine (
This work analyses and describes seed embryo morphology of eight Poecilanthe species. species can be divided in four groups based on characters: (1) P. amazonica-type has overgrown seeds, bears cataphylls the epicotyl an inflexed hypocotyls-root axis; (2) effusa-type two types trichomes epicotyl, which is longer than (3) parvilora-type a visible lens raphe runs around three-quarters circumference; grandiflora-type one-lipped rim aril. presents remarkable diversity both embryo, reinforces...
Abstract Understanding the colonization of extreme marginal habitats and relative roles space environment in maintaining peripheral populations remains challenging. Here, we leverage a system pairs rainforest sandy coastal plain communities that allow us to decouple spatial environmental effects population structure migration rates bromeliad Aechmea nudicaulis . Structure gene flow between were estimated from Bayesian clustering coalescent‐based models applied chloroplast sequence nuclear...
The proposed Biology Integration Institute will bring together two major research institutions in the Upper Midwest—the University of Minnesota (UMN) and Wisconsin-Madison (UW)—to investigate causes consequences plant biodiversity across scales a rapidly changing world —from genes molecules within cells tissues to communities, ecosystems, landscapes biosphere. focuses on biodiversity, defined broadly encompass heterogeneity life that occurs from smallest largest biological scales. A premise...
ABSTRACT This work presents a synoptic treatment for the 10 species of Poecilanthe (P. amazonica, P. effusa, falcata, grandiflora, hostmannii, itapuana, ovalifolia, parviflora, subcordata and ulei), including an identification key, nomenclatural revision their updated geographic distribution data. In addition, delimitation is briefly discussed. grandiflora falcata have been revised are considered to be distinct species; parviflora var. floribunda synonym typical variety; four lectotypes designated.