Results 31 to 40 of about 197,987 (175)

Potential use of Sr isotope ratio to evaluate trace metal uptake in moss

Ecological Indicators, 2021
Moss biomonitoring is widely applied to evaluate trace metals in atmospheric deposition and can be especially useful in mountainous areas where the installation and maintenance of physical equipment are often challenging.
Yoshitaka Oishi
doaj   +1 more source

Forage Species Swarm in Response to Coastal Upwelling

Geophysical Research Letters, 2019
We observed the distribution and identity of forage species to infer behavioral changes in response to intraseasonal variation in the coastal upwelling ecosystem of Monterey Bay, California.
Kelly. J. Benoit‐Bird, Chad. M. Waluk, John P. Ryan   +2 more
doaj   +1 more source

Methodological considerations in longitudinal morphometry of traumatic brain injury

Frontiers in Human Neuroscience, 2013
Traumatic brain injury (TBI) has recently been reconceptualized as a chronic, evolving disease process. This new view necessitates quantitative assessment of post-injury changes in brain structure that may allow more accurate monitoring and prediction of
Junghoon eKim, Brian eAvants, John eWhyte, James eGee   +3 more
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(5S)-5-[(4aR,8aS,9E,11S,13R,14S,16R,17R,19S)-11,19-Dihydroxy-8,10,13,16-tetramethyl-18-methylidene-3,4,5,6,8a,11,12,13,14,15,16,17,18,19,20,21-hexadecahydro-2H-14,17-epoxybenzo[2,3]cyclohexadeca[1,2-b]pyridine-7-yl]-3-methylfuran-2(5H)-one (12-Methylgymnodimine B)

Molbank, 2016
A new member of the gymnodimine class of spiroimine toxins has been isolated from a laboratory culture strain of Alexandrium ostenfeldii. Extensive one-dimensional (1D) and two-dimensional (2D) NMR data analysis was used to elucidate its structure as 12 ...
Wendy Strangman, Matthew Anttila, Carmelo Tomas, Jeffrey L. C. Wright   +3 more
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Hazards evaluation of a valuable vulnerable sand-wave field forage fish habitat in the marginal Central Salish Sea using a submersible

Oceanologia, 2023
The Salish Sea is a marginal inland sea of the NE Pacific (NW North America) that includes the Georgia Strait-Gulf Islands Archipelago of British Columbia, Canada and the San Juan Archipelago, Strait of Juan de Fuca, and the Lower Puget Sound of ...
H. Gary Greene, Matthew R. Baker, John Aschoff, Robert Pacunski   +3 more
doaj   +1 more source

Phytoplankton Surveys in the Arctic Fram Strait Demonstrate the Tiny Eukaryotic Alga Micromonas and Other Picoprasinophytes Contribute to Deep Sea Export

Microorganisms, 2022
Critical questions exist regarding the abundance and, especially, the export of picophytoplankton (≤2 µm diameter) in the Arctic. These organisms can dominate chlorophyll concentrations in Arctic regions, which are subject to rapid change.
Charles Bachy, Lisa Sudek, Chang Jae Choi, Charlotte A. Eckmann, Eva-Maria Nöthig, Katja Metfies, Alexandra Z. Worden   +6 more
doaj   +1 more source

A long-term decline in the abundance of endangered leatherback turtles, Dermochelys coriacea, at a foraging ground in the California Current Ecosystem

Global Ecology and Conservation, 2020
Pacific leatherback turtles (Dermochelys coriacea) are critically endangered, and declines have been documented at multiple nesting sites throughout the Pacific. The western Pacific leatherback forages in temperate and tropical waters of the Indo-Pacific
Scott R. Benson, Karin A. Forney, Jeffrey E. Moore, Erin L. LaCasella, James T. Harvey, James V. Carretta   +5 more
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Targeted Sampling by Autonomous Underwater Vehicles

Frontiers in Marine Science, 2019
In the vast ocean, many ecologically important phenomena are temporally episodic, localized in space, and move according to local currents. To effectively study these complex and evolving phenomena, methods that enable autonomous platforms to detect and ...
Yanwu Zhang, John P. Ryan, Brian Kieft, Brett W. Hobson, Robert S. McEwen, Michael A. Godin, Julio B. Harvey, Benedetto Barone, James G. Bellingham, James M. Birch, Christopher A. Scholin, Francisco P. Chavez   +11 more
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Seasonal and Geographical Transitions in Eukaryotic Phytoplankton Community Structure in the Atlantic and Pacific Oceans

Frontiers in Microbiology, 2020
Much is known about how broad eukaryotic phytoplankton groups vary according to nutrient availability in marine ecosystems. However, genus- and species-level dynamics are generally unknown, although important given that adaptation and acclimation ...
Chang Jae Choi, Chang Jae Choi, Valeria Jimenez, David M. Needham, David M. Needham, Camille Poirier, Camille Poirier, Charles Bachy, Charles Bachy, Harriet Alexander, Harriet Alexander, Susanne Wilken, Susanne Wilken, Francisco P. Chavez, Sebastian Sudek, Stephen J. Giovannoni, Alexandra Z. Worden, Alexandra Z. Worden   +17 more
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An Exploratory Study of Telomere Length in the Deep-Sea Shark, Etmopterus granulosus

Frontiers in Marine Science, 2021
The history of elasmobranch ageing highlights the difficulty of age estimation in animals lacking ossified structures. Ageing techniques are numerous, yet all are limited by difficulties of validation and verification and inherent subjectivity.
Melissa C. Nehmens, Rebecca M. Varney, Alexis M. Janosik, David A. Ebert, David A. Ebert, David A. Ebert   +5 more
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