41 Works

Data from: The influence of balanced and imbalanced resource supply on biodiversity-functioning relationship across ecosystems

Aleksandra M. Lewandowska, Antje Biermann, Elizabeth T. Borer, Miguel A. Cebrian-Piqueras, Steven A. J. Declerck, Luc De Meester, Ellen Van Donk, Lars Gamfeldt, Daniel S. Gruner, Nicole Hagenah, W. Stanley Harpole, Kevin P. Kirkman, Christopher A. Klausmeier, Michael Kleyer, Johannes M. H. Knops, Pieter Lemmens, Eric M. Lind, Elena Litchman, Jasmin Mantilla-Contreras, Koen Martens, Sandra Meier, Vanessa Minden, Joslin L. Moore, Harry Olde Venterink, Eric W. Seabloom … & Helmut Hillebrand
Numerous studies show that increasing species richness leads to higher ecosystem productivity. This effect is often attributed to more efficient portioning of multiple resources in communities with higher numbers of competing species, indicating the role of resource supply and stoichiometry for biodiversity–ecosystem functioning relationships. Here, we merged theory on ecological stoichiometry with a framework of biodiversity–ecosystem functioning to understand how resource use transfers into primary production. We applied a structural equation model to define patterns...

Data from: Climate structures genetic variation across a species' elevation range: a test of range limits hypotheses

Jason P. Sexton, Matthew B. Hufford, Ashley Bateman, David B. Lowry, Harald Meimberg, Sharon Y. Strauss, Kevin J. Rice & Ashley C.Bateman
Gene flow may influence the formation of species range limits, yet little is known about the patterns of gene flow with respect to environmental gradients or proximity to range limits. With rapid environmental change it is especially important to understand patterns of gene flow to inform conservation efforts. Here we investigate the species range of the selfing, annual plant, Mimulus laciniatus, in the California Sierra Nevada. We assessed genetic variation, gene flow, and population abundance...

Data from: Expansion and diversification of the MSDIN family of cyclic peptide genes in the poisonous agarics Amanita phalloides and A. bisporigera

Jane A. Pulman, Kevin L. Childs, R. Michael Sgambelluri & Jonathan D. Walton
Background: The cyclic peptide toxins of Amanita mushrooms, such as α-amanitin and phalloidin, are encoded by the “MSDIN” gene family and ribosomally biosynthesized. Based on partial genome sequence and PCR analysis, some members of the MSDIN family were previously identified in Amanita bisporigera, and several other members are known from other species of Amanita. However, the complete complement in any one species, and hence the genetic capacity for these fungi to make cyclic peptides, remains...

Data from: Juvenile concentrations of IGF-1 predict life-history trade-offs in a wild mammal

Nora Lewin, Eli M. Swanson, Barry L. Williams & Kay E. Holekamp
Early postnatal development can have profound effects on life-history traits later in life. One mechanism hypothesized to mediate this relationship is the anabolic hormone, insulin-like growth factor-1 (IGF-1). IGF-1 contributes importantly to postnatal growth, and thus offers a means by which environmental and genetic variation might direct organismal development, reproduction and survival. We tested whether juvenile concentrations of IGF-1 can predict intraspecific variation in life-history traits later in life using longitudinal data from free-living female...

Data from: An Avida-ED digital evolution curriculum for undergraduate biology

James J. Smith, Wendy R. Johnson, Amy M. Lark, Louise S. Mead, Michael J. Wiser & Robert T. Pennock
We present an inquiry-based curriculum based on the digital evolution platform Avida-ED (http://​avida-ed.​msu.​edu). We designed an instructional sequence and lab book consisting of an introduction to Avida-ED and a set of three lessons focused on specific evolutionary concepts. These served to familiarize students with experimental evolution and Avida-ED. Students then developed independent Avida-ED research projects to test their own questions. Curriculum design and implementation occurred over the course or two semesters, with a pilot implementation...

Data from: Assessing faculty professional development in STEM higher education: sustainability of outcomes

Terry L. Derting, Heather A. Passmore, Timothy P. Henkel, Bryan Arnold, Jessica Middlemis Maher & Diane Ebert-May
We tested the effectiveness of Faculty Institutes for Reforming Science Teaching IV (FIRST), a professional development program for postdoctoral scholars, by conducting a study of program alumni. Faculty professional development programs are critical components of efforts to improve teaching and learning in the STEM (Science, Technology, Engineering, and Mathematics) disciplines, but reliable evidence of the sustained impacts of these programs is lacking. We used a paired design in which we matched a FIRST alumnus employed...

Data from: Tipping the scales: evolution of the allometric slope independent of average trait size

R. Craig Stillwell, Alexander W. Shingleton, Ian Dworkin & W. Anthony Frankino
The scaling of body parts is central to the expression of morphology across body sizes and to the generation of morphological diversity within and among species. Although patterns of scaling-relationship evolution have been well documented for over one hundred years, little is known regarding how selection acts to generate these patterns. In part, this is because it is unclear the extent to which the elements of log-linear scaling relationships – the intercept or mean trait...

Data from: Ecological genomics of mutualism decline in nitrogen-fixing bacteria

Christie R. Klinger, Jennifer A. Lau & Katy D. Heath
Anthropogenic changes can influence mutualism evolution; however, the genomic regions underpinning mutualism that are most affected by environmental change are generally unknown, even in well-studied model mutualisms like the interaction between legumes and their nitrogen (N)-fixing rhizobia. Such genomic information can shed light on the agents and targets of selection maintaining cooperation in nature. We recently demonstrated that N-fertilization has caused an evolutionary decline in mutualistic partner quality in the rhizobia that form symbiosis with...

Data from: Disintegrating the fly: a mutational perspective on phenotypic integration and covariation

Annat Haber & Ian Dworkin
The structure of environmentally induced phenotypic covariation can influence the effective strength and magnitude of natural selection. Yet our understanding of the factors that contribute to and influence the evolutionary lability of such covariation is poor. Most studies have either examined environmental variation without accounting for covariation, or examined phenotypic and genetic covariation without distinguishing the environmental component. In this study we examined the effect of mutational perturbations on different properties of environmental covariation, as...

Data from: Local perspectives on environmental insecurity and its influence on illegal biodiversity exploitation

Meredith L. Gore, Michelle Lute, Jonah H. Ratsimbazafy, Andry Rajaonson & Michelle L. Lute
Environmental insecurity is a source and outcome of biodiversity declines and social conflict. One challenge to scaling insecurity reduction policies is that empirical evidence about local attitudes is overwhelmingly missing. We set three objectives: determine how local people rank risk associated with different sources of environmental insecurity; assess perceptions of environmental insecurity, biodiversity exploitation, myths of nature and risk management preferences; and explore relationships between perceptions and biodiversity exploitation. We conducted interviews (N = 88)...

Data from: Tempo and mode of genome evolution in a 50,000-generation experiment

Olivier Tenaillon, Jeffrey E. Barrick, Noah Ribeck, Daniel E. Deatherage, Jeffrey L. Blanchard, Aurko Dasgupta, Gabriel C. Wu, Sébastien Wielgoss, Stéphane Cruveiller, Claudine Médigue, Dominique Schneider & Richard E. Lenski
Adaptation by natural selection depends on the rates, effects and interactions of many mutations, making it difficult to determine what proportion of mutations in an evolving lineage are beneficial. Here we analysed 264 complete genomes from 12 Escherichia coli populations to characterize their dynamics over 50,000 generations. The populations that retained the ancestral mutation rate support a model in which most fixed mutations are beneficial, the fraction of beneficial mutations declines as fitness rises, and...

Data from: Leaf development and demography explain photosynthetic seasonality in Amazon evergreen forests

Jin Wu, Loren P. Albert, Aline P. Lopes, Natalia Restrepo-Coupe, Matthew Hayek, Kenia T. Wiedemann, Kaiyu Guan, Scott C. Stark, Bradley Christoffersen, Neill Prohaska, Julia V. Tavares, Suelen Marostica, Hideki Kobayashi, Mauricio L. Ferreira, Kleber Silva Campos, Rodrigo Da Silva, Paulo M. Brando, Dennis G. Dye, Travis E. Huxman, Alfredo R. Huete, Bruce W. Nelson & Scott R. Saleska
In evergreen tropical forests, the extent, magnitude, and controls on photosynthetic seasonality are poorly resolved and inadequately represented in Earth system models. Combining camera observations with ecosystem carbon dioxide fluxes at forests across rainfall gradients in Amazônia, we show that aggregate canopy phenology, not seasonality of climate drivers, is the primary cause of photosynthetic seasonality in these forests. Specifically, synchronization of new leaf growth with dry season litterfall shifts canopy composition toward younger, more light-use...

Data from: Strong selection significantly increases epistatic interactions in the long-term evolution of a protein

Aditi Gupta & Christoph Adami
Epistatic interactions between residues determine a protein’s adaptability and shape its evolutionary trajectory. When a protein experiences a changed environment, it is under strong selection to find a peak in the new fitness landscape. It has been shown that strong selection increases epistatic interactions as well as the ruggedness of the fitness landscape, but little is known about how the epistatic interactions change under selection in the long-term evolution of a protein. Here we analyze...

Data from: Spectral diversity area relationships for assessing biodiversity in a wildland-agriculture matrix

Kyla Marie Dahlin
Species-area relationships have long been used to assess patterns of species diversity across scales. Here this concept is extended to spectral diversity using hyperspectral data collected by NASA's Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) over western Michigan. This mixture of mesic forest and agricultural lands offers two end-points on the local-scale diversity continuum – one set of well mixed forest patches and one set of highly homogeneous agricultural patches. Using the sum of the first three...

Data from: Constraints on geographic variation in fiddler crabs (Ocypodidae: Uca) from the western Atlantic

Melanie J. Hopkins, Annat Haber & Carl L Thurman
A key question in evolutionary biology is how intraspecific variation biases the evolution of a population and its divergence from other populations. Such constraints potentially limit the extent to which populations respond to selection, but may endure long enough to have macroevolutionary consequences. Previous studies have focused on the association between covariation patterns and divergence among isolated populations. Few have focused on geographic variation among semi-connected populations, however, even though this may be indicative of...

Data from: No release for the wicked: enemy release is dynamic and not associated with invasiveness

Elizabeth H. Schultheis, Andrea E. Berardi & Jennifer A. Lau
The enemy release hypothesis predicts that invasive species will receive less damage from enemies, compared to co-occurring native and noninvasive exotic species in their introduced range. However, release operating early in invasion could be lost over time and with increased range size as introduced species acquire new enemies. We used three years of data, from 61 plant species planted into common gardens, to determine whether (1) invasive, noninvasive exotic, and native species experience differential damage...

Registration Year

  • 2016

Resource Types

  • Dataset


  • Michigan State University
  • University of Minnesota
  • University of Wisconsin-Madison
  • McMaster University
  • University of Maryland, College Park
  • The University of Texas at Austin
  • University of California, San Diego
  • Murray State University
  • University of Colorado Boulder
  • University of Nebraska - Lincoln