32 Works

Data from: The global distribution of diet breadth in insect herbivores

Matthew L. Forister, Vojtech Novotny, Anna K. Panorska, Leontine Baje, Yves Basset, Philip T. Butterill, Lukas Cizek, Phyllis D. Coley, Francesca Dem, Ivone R. Diniz, Pavel Drozd, Mark Fox, Andrea E. Glassmire, Rebecca Hazen, Jan Hrcek, Joshua P. Jahner, Ondrej Kaman, Tomasz J. Kozubowski, Thomas Kursar, Owen T. Lewis, John Lill, Robert J. Marquis, Scott E. Miller, Helena C. Morais, Masashi Murakami … & Lee A. Dyer
Understanding variation in resource specialization is important for progress on issues that include coevolution, community assembly, ecosystem processes, and the latitudinal gradient of species richness. Herbivorous insects are useful models for studying resource specialization, and the interaction between plants and herbivorous insects is one of the most common and consequential ecological associations on the planet. However, uncertainty persists regarding fundamental features of herbivore diet breadth, including its relationship to latitude and plant species richness. Here...

Data from: Genes and QTLs controlling inflorescence and stem branch architecture in Leymus (Poaceae: Triticeae) wildrye

Steven R. Larson, Elizabeth A. Kellogg & Kevin B. Jensen
Grass inflorescence and stem branches show recognizable architectural differences among species. The inflorescence branches of Triticeae cereals and grasses, including wheat, barley, and 400–500 wild species, are usually contracted into a spike formation, with the number of flowering branches (spikelets) per node conserved within species and genera. Perennial Triticeae grasses of genus Leymus are unusual in that the number of spikelets per node varies, inflorescences may have panicle branches, and vegetative stems may form subterranean...

Biweekly soil-moisture in the 18 CARBONO Project plots, La Selva Biological Station, March 1998-October 2018

Deborah Clark & Steven Oberbauer
This publication presents the complete 20-year record of volumetric soil moisture in the 18 plots of the CARBONO Project in the old-growth tropical rainforest at La Selva Biological Station, Costa Rica. The measurements were made biweekly through the period March 1998 – October 2018. Volumetric soil moisture was assessed over the top 30 cm of soil. The publication consists of the full data record and documentation of the cross-sensor regressions.

Data from: Towards a worldwide wood economics spectrum

Amy E. Zanne, G. Lopez-Gonzalez, David A. Coomes, Jugo Ilic, Steven Jansen, Simon L. Lewis, Regis B. Miller, Nathan G. Swenson, Michael C. Wiemann & Jerome Chave
Wood performs several essential functions in plants, including mechanically supporting aboveground tissue, storing water and other resources, and transporting sap. Woody tissues are likely to face physiological, structural and defensive trade-offs. How a plant optimizes among these competing functions can have major ecological implications, which have been under-appreciated by ecologists compared to the focus they have given to leaf function. To draw together our current understanding of wood function, we identify and collate data on...

Population genetic and geographic data of six Neotropical plant species

Diana Gamba & Nathan Muchhala
We examined population genetic structure and fine-scale spatial genetic structure (FSGS) in six perennial understory angiosperms in Andean cloud forests of northwestern Ecuador. Species belong to three families (Gesneriaceae, Melastomataceae, and Rubiaceae), and within each family we paired one insect-pollinated with one hummingbird-pollinated species, predicting that insect-pollinated species have greater population differentiation (as quantified with the FST statistic) and stronger FSGS (as quantified with the SP statistic) than hummingbird-pollinated species.

Data from: Equivalent learning, but unequal participation: male bumble bees learn comparably to females, but participate in cognitive assessments at lower rates

Matthew Austin, Tian Manning, Kamau MuseMorris & Aimee Dunlap
Sex-specific cognitive abilities are well documented. These can occur when sexes engage in different ecological contexts. Less known is whether different ecological contexts can also drive sex-specific participation rates in behavioral tests. Here, we explore this question in bumble bees, a group of eusocial insects where worker females and males exhibit stark socioecological differences. Among myriad colony maintenance tasks, workers forage for themselves and developing brood, while males forage only for themselves while mate-searching. Following...

Data from: Neotropical migratory and resident birds occurring in sympatry during winter have distinct haemosporidian parasite assemblages

Leticia Soares, Steven. Latta & Robert. E. Ricklefs
Aim: We compared the parasite assemblages of over-wintering migratory birds and permanent residents on the wintering grounds. We determined whether parasite sharing between migratory and resident birds is influenced by host phylogenetic relatedness. We then inferred whether migratory birds transport haemosporidian parasite lineages between the breeding and wintering grounds. Location: Sierra de Bahoruco National Park, Dominican Republic, Hispaniola Taxa: Migratory and resident birds (primarily Aves: Passeriformes) and their haemosporidian parasites (order Haemosporida, Plasmodium, Haemoproteus and...

Data from: Phase transitions in yeast and bacterial populations under stress

Sonya Bahar, Stephen Ordway, Dawn King, David Friend, Christine Noto, Snowlee Phu, Holly Huelskamp, R. Fredrik Inglis & Wendy Olivas
Nonequilibrium phase transitions from survival to extinction have recently been observed in computational models of evolutionary dynamics. Dynamical signatures predictive of population collapse have been observed in yeast populations under stress. We experimentally investigate the population response of the budding yeast Saccharomyces cerevisiae to biological stressors (temperature and salt concentration) in order to investigate the system’s behavior in the vicinity of population collapse. While both conditions lead to population decline, the dynamical characteristics of the...

Evaluating kin and group selection as tools for quantitative analysis of microbial data

Jeff Smith & Fredrik Inglis
Kin selection and multilevel selection theory are often used to interpret experiments about the evolution of cooperation and social behaviour among microbes. But while these experiments provide rich, detailed fitness data, theory is mostly used as a conceptual heuristic. Here, evaluate how kin and multilevel selection theory perform as quantitative analysis tools. We reanalyse published microbial datasets and show that the canonical fitness models of both theories are almost always poor fits because they use...

Data from: Tropical tree size-frequency distributions from airborne lidar

Antonio Ferraz, Sassan Saatchi, Marcos Longo & David Clark
Tropical rainforest canopies, where stems and crowns reside, are hotspots of biological diversity, mediate the global biochemical processes and are the interface between organic nature and the atmosphere. Ecosystem functions such as growth, competition and mortality, depend on the spatial arrangement of tree crowns that varies significantly across forest types and disturbance gradients. The exact nature and function of tropical tree canopies are not well known. Field inventories often focus on measuring the horizontal component...

Data from: Between predators and parasitoids: complex interactions among shelter traits, predation, and parasitism in a shelter-building caterpillar community

Christina Baer & Robert Marquis
Shelter building is widespread in the animal world and such shelters often influence the success of their builders. Shelters built by caterpillars influence the likelihood of attacks by natural enemies, but how particular shelter traits influence caterpillar survival is not known. Furthermore, the differential effects of certain shelter traits on some natural enemies, such as predators, may lead to “enemy-free space” for other natural enemies (parasitoids). The parasitoid enemy-free space hypothesis has not been directly...

Antibiotic phase transition curves

R. Fredrik Inglis
Phase transitions are an important and extensively studied concept in physics. The insights derived from understanding phase transitions in physics have also recently and successfully been applied to a number of different phenomena in biological systems. Here, we provide a brief review of phase transitions and their role in explaining biological processes ranging from collective behavior in animal flocks to neuronal firing. We also highlight a new and exciting area where phase transition theory is...

Functional traits explain the consistent resistance of biodiversity to plant invasion under nitrogen enrichment

Shao-Peng Li, Jia Pu, Shu-Ya Fan, Yingtong Wu, Xiang Liu, Yani Meng, Yue Li, Wen-Sheng Shu, Jin-Tian Li & Lin Jiang
Elton’s biotic resistance hypothesis, which posits that diverse communities should be more resistant to biological invasions, has received considerable experimental support. However, it remains unclear whether such a negative diversity–invasibility relationship would persist under anthropogenic environmental change. By using the common ragweed (Ambrosia artemisiifolia) as a model invader, our four-year grassland experiment demonstrated consistently negative relationships between resident species diversity and community invasibility, irrespective of nitrogen addition, a result further supported by a meta-analysis. Importantly,...

Data and R codes: species range-size variation in oaks

& Robert Ricklefs
We used occurrence data of 183 oak species (Quercus spp.) in North and South America to test how niche breadth and niche position affect the amount of suitable habitat area, and how colonization ability and post-glacial migration lags affect range filling. This dataset includes the data and R files related to the analyses.

Data from: Early bursts of body size and shape evolution are rare in comparative data

Luke J. Harmon, Jonathan B. Losos, T. Jonathan Davies, Rosemary G. Gillespie, John L. Gittleman, W. Bryan Jennings, Kenneth H. Kozak, Mark A. McPeek, Franck Moreno-Roark, Thomas J. Near, Andy Purvis, Robert E. Ricklefs, Dolph Schluter, , Ole Seehausen, Brian L. Sidlauskas, Omar Torres-Carvajal, Jason T. Weir & Arne Ø. Mooers
George Gaylord Simpson famously postulated that much of life's diversity originated as adaptive radiations—more or less simultaneous divergences of numerous lines from a single ancestral adaptive type. However, identifying adaptive radiations has proven difficult due to a lack of broad-scale comparative datasets. Here, we use phylogenetic comparative data on body size and shape in a diversity of animal clades to test a key model of adaptive radiation, in which initially rapid morphological evolution is followed...

Data from: The evolution of morphological diversity in continental assemblages of Passerine birds

Knud Andreas Jønsson, Jean Philippe Lessard, Robert E. Ricklefs & Jean-Philippe Lessard
Understanding geographic variation in the species richness and lineage composition of regional biotas is a long standing goal in ecology. Why do some evolutionary lineages proliferate while others do not, and how do new colonists fit into an established fauna? Here, we analyse the morphological structure of assemblages of passerine birds in four biogeographic regions to examine the relative influence of colonization history and niche-based processes on regional communities of passerine birds. Using morphological traits...

Data from: A genetic signature of the evolution of loss of flight in the Galapagos cormorant

Alejandro Burga, Wang Weiguang, Eyal Ben-David, Paul C. Wolf, Andrew M. Ramey, Claudio Verdugo, Karen Lyons, Patricia G. Parker & Leonid Kruglyak
We have a limited understanding of the genetic and molecular basis of evolutionary changes in the size and proportion of limbs. We studied wing and pectoral skeleton reduction leading to flightlessness in the Galapagos cormorant (Phalacrocorax harrisi). We sequenced and de novo assembled the genomes of four cormorant species and applied a predictive and comparative genomics approach to find candidate variants that may have contributed to the evolution of flightlessness. These analyses and cross-species experiments...

Biweekly fine litterfall in the 18 CARBONO Project plots, La Selva Biological Station, October 1997-October 2018

Deborah Clark
This publication presents the 21-year record of fine-litterfall (leaves, reproductive materials, twigs < 1 cm diameter) in the 18 plots of the CARBONO Project in the old-growth tropical rainforest at La Selva Biological Station, Costa Rica. The CARBONO Project (1997-2018) was a multidisciplinary long-term research program to quantify forest carbon cycling at the landscape scale in the old-growth upland forest. The dataset is complete and has been through extensive qa/qc based on internal checks and...

Supplemental information for: Annual tropical-rainforest productivity through two decades: Complex responses to climatic factors, CO2 and storm damage

Deborah A. Clark, David B. Clark & Steven F. Oberbauer
The supplemental files in this deposition contribute additional information useful for understanding the analyses in the associated manuscript. Two files contain the annual (CARBONO Project measurement-year) data for productivity and for environmental conditions that were analyzed in the paper. The annual productivity metrics were derived from the CARBONO Project litterfall and tree-growth data that were provided and documented in prior Dryad data depositions. A third file in this deposition provides the daily data underlying the...

Two decades of annual landscape-scale tree growth and dynamics in old-growth tropical rainforest in the CARBONO Project, La Selva Biological Station, 1997-2018

Deborah Clark & David Clark
Here we present the complete data series from a 21-yr study of the annual growth and dynamics of trees, palms and lianas in the old-growth tropical rainforest at the La Selva Biological Station in Costa Rica. These observations were part of the CARBONO Project, a multidisciplinary team study of forest carbon cycling. The project was designed to assess forest processes at the landscape scale by sampling with replication across the within-landscape edaphic heterogeneity typical of...

A genomic and morphometric analysis of alpine bumblebees: Ongoing reductions in tongue length but no clear genetic component

Matthew T. Webster, Matthew J. Christmas, Julia C. Jones, Anna Olsson, Ola Wallerman, Ignas Bunikis, Marcin Kierczak, Kaitlyn M. Whitley, Isabel Sullivan, Jennifer C. Geib & Nicole E. Miller‐Struttmann
Over the last six decades, populations of the bumblebees Bombus sylvicola and Bombus balteatus in Colorado have experienced decreases in tongue length, a trait important for plant-pollinator mutualisms. It has been hypothesized that this observation reflects selection resulting from shifts in floral composition under climate change. Here we used morphometrics and population genomics to determine whether morphological change is ongoing, investigate the genetic basis of morphological variation, and analyse population structure in these populations. We...

Data from: Allopolyploidy, diversification, and the Miocene grassland expansion

Matt C. Estep, Michael R. McKain, Dilys Vela Diaz, Jinshun Zhong, John G. Hodge, Trevor R. Hodkinson, Daniel J. Layton, Simon T. Malcomber, Rémy Pasquet & Elizabeth A. Kellogg
The role of polyploidy, particularly allopolyploidy, in plant diversification is a subject of debate. Whole-genome duplications precede the origins of many major clades (e.g., angiosperms, Brassicaceae, Poaceae), suggesting that polyploidy drives diversification. However, theoretical arguments and empirical studies suggest that polyploid lineages may actually have lower speciation rates and higher extinction rates than diploid lineages. We focus here on the grass tribe Andropogoneae, an economically and ecologically important group of C4 species with a high...

Global patterns of population genetic differentiation in seed plants

Diana Gamba, Diana Gamba & Nathan Muchhala
Evaluating the factors that drive patterns of population differentiation in plants is critical for understanding several biological processes such as local adaptation and incipient speciation. Previous studies have given conflicting results regarding the significance of pollination mode, seed dispersal mode, mating system, growth form, and latitudinal region in shaping patterns of genetic structure, as estimated by FST values, and no study to date has tested their relative importance together across a broad scale. Here we...

Tropical rain forest canopy height measurements 1999 - 2018

David Clark & Deborah Clark
The distribution of canopy heights in tropical rain forests directly affects carbon storage and the maintenance of biodiversity. We report here raw field data on annually-measured canopy height distributions over an old-growth tropical rain forest landscape in Costa Rica from 1999-2018. The data were taken at 231 points on a 5 x 5 m grid in 18 0.50 ha plots that were initially sited with a stratified random design across local gradients of soil nutrients...

Canopy height distributions and estimated above-ground biomass across a tropical rain forest landscape in Costa Rica, 1992-2018

David Clark, Deborah Clark & James Kellner
This publication presents four related data sets that describe canopy height distributions and estimated above-ground biomass across an old-growth tropical rain forest landscape at the La Selva Biological Station, Costa Rica, from 1992 – 2018. One data set contains measured forest heights that were taken annually from 1999-2018 at 231 points per plot in 18 0.50 ha forest inventory plots (9 plots in 1999, 18 thereafter). The second data set contains data from an annual...

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