A5027490648- Species Distribution and Climate Change
- Plant and animal studies
- Plant Diversity and Evolution
- Ecology and Vegetation Dynamics Studies
- Natural Compound Pharmacology Studies
- Plant and Fungal Species Descriptions
- Botany, Ecology, and Taxonomy Studies
- Network Security and Intrusion Detection
- Information and Cyber Security
- Mediterranean and Iberian flora and fauna
- Advanced Malware Detection Techniques
- Genomics and Phylogenetic Studies
- Plant Pathogens and Fungal Diseases
- Environmental DNA in Biodiversity Studies
- African Botany and Ecology Studies
- Plant Parasitism and Resistance
- Evolution and Paleontology Studies
- Plant Pathogens and Resistance
- Smart Grid Security and Resilience
- Botany and Plant Ecology Studies
- Interconnection Networks and Systems
- Plant Physiology and Cultivation Studies
- IPv6, Mobility, Handover, Networks, Security
- Fern and Epiphyte Biology
- Remote Sensing in Agriculture
Robert S. Peabody Museum of Archaeology
2024
Yale University
2011-2024
American Museum of Natural History
2011-2024
Whitney Museum of American Art
2011-2024
Yale Peabody Museum
2010-2023
U.S. Air Force Institute of Technology
2019-2022
Wright-Patterson Air Force Base
2020-2022
Wake Forest University
2018
United States Air Force Research Laboratory
2016
Dartmouth College
2012-2015
Summary Nonrandom collecting practices may bias conclusions drawn from analyses of herbarium records. Recent efforts to fully digitize and mobilize regional floras online offer a timely opportunity assess commonalities differences in sampling biases. We determined spatial, temporal, trait, phylogenetic, collector biases c . 5 million records, representing three the most complete digitized world: Australia ( AU ), South Africa SA New England, USA NE ). identified numerous shared unique among...
Machine learning (ML) has great potential to drive scientific discovery by harvesting data from images of herbarium specimens-preserved plant material curated in natural history collections-but ML techniques have only recently been applied this rich resource. particularly strong prospects for the study phenological events such as growth and reproduction. As a major indicator climate change, driver ecological processes, critical determinant fitness, phenology is an important frontier...
We used a near-complete phylogeny for the angiosperm clade Viburnum to assess lineage diversification rates, and examine possible morphological ecological factors driving radiations. Maximum-likelihood Bayesian approaches identified shifts in rate links character evolution. inferred ancestral environment changes dynamics associated with subsequent biome shifts. probably diversified tropical forests of Southeast Asia Eocene, three radiations temperate clades during Miocene. Four traits...
Premise of the Study Phenological annotation models computed on large‐scale herbarium data sets were developed and tested in this study. Methods Herbarium specimens represent a significant resource with which to study plant phenology. Nevertheless, phenological is time‐consuming, requires substantial human investment, difficult mobilize at large taxonomic scales. We created evaluated new methods based deep learning techniques automate stages these four representing temperate, tropical,...
Garcinia L. is a pantropically distributed genus comprised of at least 250 species shrubs and trees has centers diversity located in Africa/Madagascar, Australasia, Southeast Asia. The notable due to its extreme floral form, common presence lowland tropical rainforests worldwide, potential pharmacological value. Across entire geographic range, lacks recent taxonomic revision, with the last genus-level treatment conducted over 40 years ago. In order provide an evolutionary-based framework for...
• Premise of the study: Despite recent progress, significant uncertainties remain concerning relationships among early-branching lineages within Viburnum (Adoxaceae), prohibiting a new classification and hindering studies character evolution increasing use in addressing wide range ecological evolutionary questions. We hoped to resolve these issues by sequencing whole plastid genomes for representative species combining with molecular data previously obtained from an expanded taxon sample.•...
Abstract The billions of specimens housed in natural science collections provide a tremendous source under–utilized data that are useful for scientific research, conservation, commerce, and education. Digitization mobilization specimen images promises to greatly accelerate their utilization. While digitization collection has been occurring decades, the vast majority remain un–digitized. If task is be completed near future, innovative, high–throughput approaches needed. To create dataset...
Premise of the Study Herbarium specimens provide a robust record historical plant phenology (the timing seasonal events such as flowering or fruiting). However, difficulty aggregating phenological data from arises lack standardized scoring methods and definitions for states across collections community. Methods Results To address this problem, we report on consensus reached by an iD igBio working group curators, researchers, standards experts regarding efficient protocol data‐sharing...
The digitization of biocollections is a critical task with direct implications for the global community who use data research and education. Recent innovations to involve citizen scientists in increase awareness value biodiversity specimens; advance science, technology, engineering, math literacy; build sustainability digitization. In support these activities, we launched first citizen-science event focused on specimens: Worldwide Engagement Digitizing Biocollections (WeDigBio). During...
Abstract Phylogeny, molecular sequences, fossils, biogeography, and biome occupancy are all lines of evidence that reflect the singular evolutionary history a clade, but they most often studied separately, by first inferring fossil-dated phylogeny, then mapping on ancestral ranges biomes inferred from extant species. Here we jointly model evolution biogeographic ranges, affinities, while incorporating fossils to estimate dated phylogeny for 163 species woody plant clade Viburnum (Adoxaceae)...
The pantropical genus Garcinia comprises more than 250 species of dioecious trees and shrubs that are a common component lowland tropical forests. exhibits as extreme diversity floral form is found anywhere in angiosperms, there many unresolved taxonomic issues surrounding it. To evaluate morphology‐based classification schemes involving its relatives to examine the within phylogenetic context, higher‐level relationships among broad sample close were inferred by conducting Bayesian,...
Effective workflows are essential components in the digitization of biodiversity specimen collections. To date, no comprehensive, community-vetted have been published for digitizing flat sheets and packets plants, algae, fungi, even though latest estimates suggest that only 33% herbarium specimens digitally transcribed, 54% herbaria use a database, 24% imaging specimens. In 2012, iDigBio, U.S. National Science Foundation's (NSF) coordinating center national resource public, nonfederal...
Species are the starting point for most studies of ecology and evolution, but proper circumscription species can be extremely difficult in morphologically variable lineages, there still few convincing examples molecularly informed delimitation plants. Here, we focus on Viburnum nudum complex, a highly clade that is widely distributed eastern North America. Taxonomic treatments have mostly divided this complex into northern (V. var. cassinoides) southern nudum) entities, additional names been...
SUMMARY Non-random collecting practices may bias conclusions drawn from analyses of herbarium records. Recent efforts to fully digitize and mobilize regional floras offer a timely opportunity assess commonalities differences in sampling biases. We determined spatial, temporal, trait, phylogenetic, collector biases ∼5 million records, representing three the most complete digitized world: Australia (AU), South Africa (SA), New England (NE). identified numerous shared unique among these...
Premise We take an integrative approach in assessing how introgression and Pleistocene climate fluctuations have shaped the diversification of core Lentago clade Viburnum , a group five interfertile species with broad areas sympatry. specifically tested whether flowering time plays role maintaining isolation. Methods RAD ‐seq data for 103 individuals were used to infer relationships genetic structure within each species. Flowering times compared among on basis historical dates documented by...
Abstract Members of the traditional genus Dentaria (Brassicaceae) comprise about twenty species disjunctly distributed in three biogeographical areas: eastern North America, western and Eurasia. The group has variously been treated as a distinct genus, subgenus Cardamine, or several sections within Cardamine. Using chloroplast DNA sequence data from trnL intron ndhF gene we examine evolutionary relationships to Cardamine sensu stricto validity Schulz's sectional treatment (including...
A fundamental objective of evolutionary biology is to understand the origin independently evolving species. Phylogenetic studies species radiations rarely are able document ongoing speciation; instead, modes speciation, entailing geographic separation and/or ecological differentiation, posited retrospectively. The Oreinotinus clade Viburnum has radiated recently from north south through cloud forests Mexico and Central America Andes. Our analyses support a hypothesis incipient speciation in...
New results from phylogenetic analyses utilizing chloroplast and nuclear DNA markers agree with morphology in support of the unification all Rheedia L. part Ochrocarpos Thouars Garcinia show that species occurring Madagascar Comoros fall into four separate lineages, which are designated here as informal groups. An examination these areas recognition 32 currently described species, but one endemic. The widespread African G. livingstonei T. Anderson, is noted for first time to occur Mayotte....
Enlarged sterile flowers on the periphery of inflorescences increase attractiveness floral displays, and previous studies have generally demonstrated that these positive effects insect visitation and/or reproductive success. However, experiments not specifically been designed to examine benefits under conditions reflect early stages in their evolution, i.e. when plants produce are at low frequency.Over three years, were performed natural populations Viburnum lantanoides, which produces...
In a recent publication dealing with the sectional-level taxonomy of Garcinia , an illegitimate superfluous sectional name and two homonyms were published. Herein we choose legitimate name, section Rheediopsis Pierre, for Rheedia (L.) S.W.Jones ex P.W.Sweeney; create new names in Allanblackia gabonensis (Pellegr.) Bamps A. parviflora A.Chev.
Molecular phylogenetic studies of Garcinia have identified a large clade whose component species can be by flowers that nectariferous antesepalous appendages or intrastaminal rings and disks. One current hypothesis is within Clusiaceae these structures represent an outer whorl stamens, but the position in some mature does not support this. To better understand nature Garcinia, floral anatomy staminate pistillate was studied G. nervosa xanthochymus. These detailed anatomical do disks are...