20 Works

Guidelines for including bamboos in tropical ecosystem monitoring

Belen Fadrique, Joseph Veldman, James Dalling, Lynn Clark, Lia Montti, Eduardo Ruiz-Sanchez, Debora Rother, Francisca Ely, William Farfan-Rios, Paul Gagnon, Juan Carlos Camargo Garcia, Sonali Saha, Thomas Veblen, Ximena Londoño, Kenneth Feeley & Cara Rockwell
Bamboos are a diverse and ecologically important group of plants that have the potential to modulate the structure, composition and function of forests. With the aim of increasing the visibility and representation of bamboo in forest surveys, and to standardize techniques across ecosystems, we present a protocol for bamboo monitoring in permanent research plots. A bamboo protocol is necessary because measurements and sampling schemes that are well-suited to trees are inadequate for monitoring most bamboo...

Effect of stressors on the carrying capacity of spatially distributed metapopulations

Bo Zhang, Donald DeAngelis, Wei-Ming Ni, Yuanshi Wang, Lu Zhai, Alex Kula, Shuang Xu & David Van Dyken
Stressors such as antibiotics, herbicides and pollutants are becoming increasingly common in the environment. The effects of stressors on populations are typically studied in homogeneous, non-spatial settings. However, most populations in nature are spatially distributed over environmentally heterogeneous landscapes with spatially-restricted dispersal. Little is known about the effects of stressors in these more realistic settings. Here, we combine laboratory experiments with novel mathematical theory to rigorously investigate how a stressor’s physiological effect and spatial distribution...

Data from: Megafauna decline have reduced pathogen dispersal which may have increased emergent infectious diseases

Chris Doughty, Tomos Prys-Jones, Soren Faurby, Crystal Hepp, Viacheslav Fofanov, Andrew Abraham, Victor Leshyk, Nathan Nieto, Jens-Christian Svenning & Mauro Galetti
The Late Quaternary extinctions of megafauna (defined as animal species > 44.5 kg) reduced the dispersal of seeds and nutrients, and likely also microbes and parasites. Here we use body-mass based scaling and range maps for extinct and extant mammal species to show that these extinctions led to an almost seven-fold reduction in the movement of gut-transported microbes, such as Escherichia coli (3.3–0.5 km 2 d − 1 ). Similarly, the extinctions led to a...

Trajectories of drifters of different shapes released at four locations across the Atlantic Ocean

Philippe Miron, Maria Olascoaga, Francisco Beron-Vera, Nathan Putman, J. Triañes, Rick Lumpkin & Gustavo Goni
This data set contains trajectories of drifters of various shapes deployed at four locations across the Atlantic Ocean during the PIRATA (Prediction and Research Moored Array in the Tropical Atlantic) Northeast Extension (https://www.aoml.noaa.gov/phod/pne/index.php) cruise in 2018. The drifters were released to study how marine debris and Sargassum move under different ocean and wind conditions and assess inertial effects on their drift. These drifters were specially designed at NOAA's Atlantic Oceanographic and Meteorological Laboratory. Five types...

Photosynthetic heat tolerances and extreme leaf temperatures

Timothy Perez & Kenneth Feeley
Photosynthetic heat tolerances (PHTs) have several potential applications including predicting which species will be most vulnerable to climate change. Given that plants exhibit unique thermoregulatory traits that influence leaf temperatures and decouple them from ambient air temperatures, we hypothesized that PHTs should be correlated with extreme leaf temperatures as opposed to air temperatures. We measured leaf thermoregulatory traits, maximum leaf temperatures (TMO) and two metrics of PHTs (Tcrit and T50) quantified using the quantum yfield...

Inter- and intraspecific variation in juvenile metabolism and water loss among five biphasic amphibian species

Arianne Messerman & Manuel Leal
Population persistence is informed by the ability of individuals to cope with local abiotic conditions, which is commonly mediated by physiological traits. Among biphasic amphibians, juveniles—which are infrequently studied but play a key role in amphibian population dynamics—are the first life stage to experience terrestrial conditions following the aquatic larval stage. To illuminate phenotypic variation that may allow juveniles to survive the physiological challenges presented by this transition, we examined respiratory surface area water loss...

Data files contributing to Kramer et al., 2020: Apparent dust size discrepancy in aerosol renalysis in north African dust after long-range transport. Atmospheric Chemistry Physics Discussion.

Samantha Kramer, Claudia Alvarez, Ravi Govidaraju, Anne Barkley, Peter Colarco, Lillian Custals, Cassandra Gaston, Paquita Zuidema & Rodrigo Delgadillo

Polygenic selection within a single generation leads to subtle divergence among ecological niches

Moritz Ehrlich, Dominique N. Wagner, Marjorie F. Oleksiak & Douglas L. Crawford
Selection on standing genetic variation may be effective enough to allow for adaptation to distinct niche environments within a single generation. Minor allele frequency changes at multiple, redundant loci of small effect can produce remarkable phenotypic shifts. Yet, demonstrating rapid adaptation via polygenic selection in the wild remains challenging. Here we harness natural replicate populations that experience similar selection pressures and harbor high within-, yet negligible among-population genetic variation. Such populations can be found among...

Assessing changes in genomic divergence following a century of human mediated secondary contact among wild and captive-bred ducks

Philip Lavretsky, Nancy Rotzel McInerney, Jonathon Mohl, Joshua Brown, Helen James, Kevin McCracken & Robert Fleischer
Along with manipulating habitat, the direct release of domesticated individuals into the wild is a practice used world-wide to augment wildlife populations. We test between possible outcomes of human-mediated secondary contact using genomic techniques at both historical and contemporary time scales for two iconic duck species. First, we sequence several thousand ddRAD-seq loci for contemporary mallards (Anas platyrhynchos) throughout North America, and two domestic mallard-types (i.e., known game-farm mallards and feral Khaki Campbell’s). We show...

Data from: Validation of serum neurofilaments as prognostic & potential pharmacodynamic biomarkers for ALS

Michael Benatar, Lanyu Zhang, Lily Wang, Volkan Granit, Jeffrey Statland, Richard Barohn, Andrea Swenson, John Ravitz, Carlayne Jackson, Ted Burns, Jaya Trivedi, Erik Pioro, James Caress, Jonathan Katz, Jacob McCauley, Rosa Rademakers, Andrea Malaspina, Lyle Ostrow & Joanne Wuu
Objective. Identify preferred neurofilament assays, and clinically validate serum NfL and pNfH as prognostic and potential pharmacodynamic biomarkers relevant to ALS therapy development. Methods. Prospective, multi-center, longitudinal observational study of patients with ALS (n=229), primary lateral sclerosis (PLS, n=20) and progressive muscular atrophy (PMA, n=11). Biological specimens were collected, processed and stored according to strict standard operating procedures (SOPs) 1. Neurofilament assays were performed in a blinded manner by independent contract research organizations (CROs). Results....

Bamboo phenology and life cycle drive seasonal and long-term functioning of Amazonian bamboo-dominated forests

Belen Fadrique, Daniel Gann, Bruce Nelson, Sassan Saatchi & Kenneth Feeley
1. Bamboo-dominated forests (BDF) extend over large areas in the drought-prone Southwestern Amazon, yet little is known about the dynamics of these ecosystems. Here, we investigate the hypothesis that bamboo modulates large-scale ecosystem dynamics through competition with coexisting trees for water. 2. We examined spatio-temporal patterns of remotely sensed metrics (Enhanced Vegetation Index [EVI], Normalized Difference Moisture Index [NDMI]) in >300 Landsat images as proxies for canopy leaf phenology and water content at two time...

Data from: Multi-population seedling and soil transplants show possible responses of a common tropical montane tree species (Weinmannia bangii) to climate change

Richard Tito, Heraldo L. Vasconcelos & Kenneth J. Feeley
A possible response of many plant species to global warming is migration to higher elevations. However, these migrations may not be required if species can tolerate higher temperatures, or may be prevented if there are other factors such as changes in soil conditions that make upslope areas unsuitable. We used a set of 3-year field transplant experiments in the remote Peruvian Andes to simulate two possible responses of an abundant tropical montane cloudforest tree species...

Ship-based high resolution sea surface skin temperature from the Marine-Atmospheric Emitted Radiance Interferometer (M-AERI) deployed between 2013 and 2020

Peter Minnett, Malgorzata Szczodrak, Miguel Angel Izaguirre & Bingkun Luo
This dataset is a part of that taken with sea-going instruments described by “Minnett, P.J., Knuteson, R.O., Best, F.A., Osborne, B.J., Hanafin, J.A., & Brown, O.B. (2001). The Marine-Atmospheric Emitted Radiance Interferometer (M-AERI), a high-accuracy, sea-going infrared spectroradiometer. Journal of Atmospheric and Oceanic Technology, 18, 994-1013". Specifically, this dataset comprises measurements of M-AERIs, ship-based Fourier Transform Infrared (FTIR) interferometric spectroradiometers mounted on ships a few meters (research ships) or a few tens of meters (cruise...

Prehistoric baseline reveals substantial decline of oyster reef condition in a Gulf of Mexico conservation priority area

Stephen Hesterberg, Gregory Herbert, Thomas Pluckhahn, Ryan Harke, Nasser Al-Qattan, C. Trevor Duke, Evan Moore, Megan Smith, Alexander Delgado & Christina Sampson
This dataset contains oyster shell height measurements for prehistoric and modern oysters collected near Crystal River, Florida, USA. Oxygen and carbon stable isotope values for large prehistoric and modern oysters are also reported.

Data from: Detecting aquatic invasive species in bait and pond stores with targeted environmental (e) DNA high-throughput sequencing metabarcode assays: angler, retailer, and manager implications

Matt Snyder, Carol Stepien, Nathaniel Marshall, Hannah Scheppler, Christopher Black & Kevin Czajkowski
Bait and pond stores comprise potential, yet poorly understood, vectors for aquatic invasive species (AIS). We tested for AIS and illegal native species in 51 bait and 21 pond stores from the central Great Lakes (Lake Erie, Ohio and Lake St. Clair, Michigan) and the adjacent Wabash River (Indiana) using environmental DNA (eDNA) metabarcode assays of water samples and morphological identifications. Retailers were questioned about supply chains, and anglers surveyed about baitfish use and disposal....

Data From: Characterizing and quantifying African dust transport and deposition to South America: Implications for the phosphorus budget in the Amazon Basin

Joseph Prospero, Anne Barkley, Cassandra Gaston, Alexandre Gatineau, Arthur Campos y Sansano & Kathy Panechou Pulcherie

Data from: Do plant-microbe interactions support the Stress Gradient Hypothesis?

Aaron David, Khum Thapa-Magar, Michelle Afkhami, Christopher Searcy & Eric Menges
The Stress Gradient Hypothesis (SGH), which predicts increasing ratios of facilitative:competitive interactions with increasing stress, has long been a guiding framework for conceptualizing plant-plant interactions. Recently, there has been a growing recognition of the roles of microbes in mitigating or exacerbating environmental stress for their plant hosts. As such, we might predict based on the SGH that beneficial microbial effects on plant performance should be positively associated with stress. We hypothesized that support for the...

Data for: Landscape scale variation in the hydrologic niche of California coast redwood

Emily J. Francis, Gregory P. Asner, Katharine J. Mach & Christopher B. Field
Topoclimatic diversity within forest landscapes can underlie variation in water availability, which may correspond to patterns in habitat suitability of tree species with differing hydrologic niches. However, the trade-off between the collection of data at a fine grain size over large spatial extents has limited comprehensive analyses of landscape scale variation in habitat suitability. We present a fine scale analysis of the roles of topographic gradients in moisture availability, soil water storage, and fog frequency...

Frugivory underpins the nitrogen cycle

Nacho Villar, Claudia Paz, Valesca Zipparro, Sergio Nazareth, Leticia Bulascoschi, Elisabeth Bakker & Mauro Galetti
1. Tropical rainforests are populated by large frugivores that feed upon fruit-producing woody species, yet their role in regulating the cycle of globally important biogeochemical elements such as nitrogen is still unknown. This is particularly relevant because tropical forests play a prominent role in the nitrogen cycle and are becoming rapidly defaunated. Furthermore, frugivory is not considered in current plant-large herbivore-nutrient cycling frameworks exclusively focused on grazers and browsers. 2. Here we used a long-term...

Registration Year

  • 2020

Resource Types

  • Dataset


  • University of Miami
  • University of Michigan–Ann Arbor
  • Florida International University
  • Pontifical Catholic University of Peru
  • Texas A&M University System
  • Sun Yat-sen University
  • National Oceanography Centre
  • Sao Paulo State University
  • Western Institute of Technology and Higher Education
  • Stanford University