9 Works

Facultative chemosynthesis in a deep-sea anemone from hydrothermal vents in the Pescadero Basin, Gulf of California

Shana Goffredi, Cambrie Motooka, David Fike, Luciana Gusmão, Ekin Tilic, Greg Rouse & Estefanía Rodríguez
Background Numerous deep-sea invertebrates have formed symbiotic associations with internal chemosynthetic bacteria in order to harness inorganic energy sources typically unavailable to most animals. Despite success in nearly all marine habitats and their well-known associations with photosynthetic symbionts, Cnidaria remain without a clear dependence on hydrothermal vents and chemosynthetic bacterial symbionts specifically. Results A new chemosynthetic symbiosis between the sea anemone Ostiactis pearseae (Daly & Gusmão, 2007) and intracellular bacteria was discovered at ~3700 m...

Sea surface temperature from multiple in situ sensors on MISO-BOB 2019 research cruise

Simon de Szoeke
Sea surface temperature (SST) was measured by several instruments deployed from the research vessel Sally Ride in the Bay of Bengal for the Monsoon Intraseasonal Oscillations in the Bay of Bengal (MISO-BOB) 2019 field experiment. This data set presents 1 minute averages of 3 m SST from the Scripps Institution of Oceanography Fast Current-Temperature-Depth sounder (FCTD), 0.2 m SST from the Oregon State University SurfOtter, and 0.1 m SST from a sensor attached to a...

Data from: Sierra Nevada mountain lake microbial communities are structured by temperature, resources, and geographic location

Marika Schulhof, Andrew Allen, Eric Allen, Natalie Mladenov, John McCrow, Natalie Jones, Jessica Blanton, Hamanda Badona Cavalheri, Drishti Kaul, Celia Symons & Jonathan Shurin
Warming, eutrophication (nutrient fertilization) and brownification (increased loading of allochthonous organic matter) are three global trends impacting lake ecosystems. However, the independent and synergistic effects of resource addition and warming on autotrophic and heterotrophic microorganisms are largely unknown. In this study, we investigate the independent and interactive effects of temperature, dissolved organic carbon (DOC, both allochthonous and autochthonous), and nitrogen (N) supply, in addition to the effect of spatial variables, on the composition, richness, and...

Emperor penguin air sac oxygen

Paul Ponganis, Cassondra Williams, Max Czapanskiy, Jason John, Judy St. Leger & Miriam Scadeng
Some marine birds and mammals can perform dives of extraordinary duration and depth. Such dive performance is dependent on many factors, including total body oxygen (O2) stores. For diving penguins, the respiratory system (air sacs and lungs) constitutes 30-50% of the total body O2 store. To better understand the role and mechanism of parabronchial ventilation and O2 utilization in penguins both on the surface and during the dive, we examined air sac partial pressures of...

Data from: Strong selective effects of mitochondrial DNA on the nuclear genome

Timothy Healy & Ronald Burton
Oxidative phosphorylation, the primary source of cellular energy in eukaryotes, requires gene products encoded in both the nuclear and mitochondrial genomes. As a result, functional integration between the genomes is essential for efficient adenosine triphosphate (ATP) generation. Although within populations this integration is presumably maintained by coevolution, the importance of mitonuclear coevolution in key biological processes such as speciation and mitochondrial disease has been questioned. In this study, we crossed populations of the intertidal copepod...

Co-occurrence of beaked whale strandings and naval sonar in the Mariana Islands, Western Pacific

Anne Simonis, Robert Brownell, Bruce Thayre, Jennifer Trickey, Erin Oleson, Roderick Huntington & Simone Baumann-Pickering
Mid-frequency active sonar (MFAS), used for antisubmarine warfare (ASW), has been associated with multiple beaked whale (BW) mass stranding events. Multinational naval ASW exercises have utilized MFAS offshore of the Mariana Archipelago semi-annually since 2006. We report BW and MFAS acoustic activity near the islands of Saipan and Tinian from March 2010 through November 2014. Signals from Cuvier’s (Ziphius cavirostris) and Blainville’s beaked whales (Mesoplodon densirostris), and a third unidentified BW species were detected throughout...

Data from: Dermal denticle assemblages in coral reef sediments correlate with conventional shark surveys

Erin Dillon, Kevin Lafferty, Douglas McCauley, Darcy Bradley, Richard Norris, Jennifer Caselle, Graziella DiRenzo, Jonathan Gardner & Aaron O'Dea
It is challenging to assess long-term trends in mobile, long-lived, and relatively rare species such as sharks. Despite ongoing declines in many coastal shark populations, conventional surveys might be too fleeting and too recent to describe population trends over decades to millennia. Placing recent shark declines into historical context should improve management efforts as well as our understanding of past ecosystem dynamics. A new paleoecological approach for surveying shark abundance on coral reefs is to...

New Age of Fishes initiated by the Cretaceous−Paleogene mass extinction

Elizabeth C. Sibert & Richard D. Norris
Ray-finned fishes (Actinopterygii) comprise nearly half of all modern vertebrate diversity, and are an ecologically and numerically dominant megafauna in most aquatic environments. Crown teleost fishes diversified relatively recently, during the Late Cretaceous and early Paleogene, although the exact timing and cause of their radiation and rise to ecological dominance is poorly constrained. Here we use microfossil teeth and shark dermal scales (ichthyoliths) preserved in deep-sea sediments to study the changes in the pelagic fish...

Registration Year

  • 2020
    9

Resource Types

  • Dataset
    9

Affiliations

  • Scripps Institution of Oceanography
    9
  • Victoria University of Wellington
    1
  • National Oceanography Centre
    1
  • National Marine Mammal Foundation
    1
  • University of Queensland
    1
  • Oregon State University
    1
  • University of California, San Diego
    1
  • Royal Netherlands Institute for Sea Research
    1
  • Occidental College
    1
  • University of Edinburgh
    1