Results 21 to 30 of about 8,961 (218)

Stereo-video landers can rapidly assess marine fish diversity and community assemblages

Frontiers in Marine Science
Climate change and anthropogenic stressors affect the distribution, abundance, and diversity of fish communities across the world. To understand rapidly changing biotic communities, resource managers need a method to quickly and efficiently document ...
Kinsey E. Matthews, Ryan T. Fields, Kathleen P. Cieri, Jacklyn L. Mohay, Mary G. Gleason, Richard M. Starr   +5 more
doaj   +1 more source

The artisanal elasmobranch fishery on the east coast of Baja California, Mexico: Characteristics and management considerations

Ciencias Marinas, 2009
The Mexican elasmobranch fishery ranks among the most important in the world, but details associated with fishing effort and species composition are generally unavailable, particularly for the extensive artisanal fishery. Seasonal surveys were conducted
WD Smith, JJ Bizzarro, GM Cailliet
doaj   +1 more source

The Souss lagerstätte of the Anti-Atlas, Morocco: discovery of the first Cambrian fossil lagerstätte from Africa

Scientific Reports, 2021
Episodic low oxygenated conditions on the sea-floor are likely responsible for exceptional preservation of animal remains in the upper Amouslek Formation (lower Cambrian, Stage 3) on the northern slope of the western Anti-Atlas, Morocco.
Gerd Geyer, Ed Landing
doaj   +1 more source

The Bakken Model: Deposition of Organic-Rich Mudstones and Petroleum Source Rocks as Shallow-Marine Facies Through the Phanerozoic

Journal of Marine Science and Engineering
Many organic-rich marine mudstones, which are key hydrocarbon sources, were deposited on continent margins in mid-water oxygen-minimum zones (OMZs) that expanded and intensified during oceanic anoxic events (OAEs).
Ed Landing
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

High‐frequency and long‐term observations of eDNA from imperiled salmonids in a coastal stream: Temporal dynamics, relationships with environmental factors, and comparisons with conventional observations

Environmental DNA, 2022
A greater understanding of eDNA behavior in the environment is needed before it can be employed for ecosystem monitoring applications. The objectives of this study were to use autonomous sampling to conduct long‐term, high‐frequency monitoring of the ...
Ryan T. Searcy, Alexandria B. Boehm, Chloe Weinstock, Christina M. Preston, Scott Jensen, Brent Roman, James M. Birch, Christopher A. Scholin, Kyle S. Van Houtan, Joseph D. Kiernan, Kevan M. Yamahara   +10 more
doaj   +1 more source

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
doaj   +1 more source

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
doaj   +1 more source

Three phosphatase families form a community: The phosphohydrolases that act upon inositol pyrophosphates

FEBS Letters, EarlyView.
Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley   +1 more source

Effect of heat and surface treatment on mechanical properties of 300M steel for civil main landing gear fuse-pin

Hangkong gongcheng jinzhan
The control of accuracy breakaway load for emergency fuse-pin of civil aircraft main landing gear is crucial for mechanical design of fuse-pin. To propose the requirements for heat and surface treatment process of fusepin and explore the mechanical ...
FU Liang, LI Tiannan, TAN Zihao, HUANG Shaofan, XIAO Xijun, FENG Kangtun, MENG Qinghe   +6 more
doaj   +1 more source