Results 41 to 50 of about 15,146 (215)

Herding mesopelagic fish by light [PDF]

Marine Ecology Progress Series, 2019
To assess organisms forming mesopelagic scattering layers in the Red Sea, we took advantage of their reactions to light. We used a remotely operated vehicle (ROV) equipped with LED lamps for herding the acoustic targets down to the bottom (700 m), while concurrently monitoring the event by shipborne and deployed echosounders as well as video footage ...
Kaartvedt, Stein, Røstad, Anders, Opdal, Anders Frugård, Aksnes, Dag Lorents   +3 more
openaire   +3 more sources

Acoustic behavior of melon-headed whales varies on a diel cycle. [PDF]

, 2015
Many terrestrial and marine species have a diel activity pattern, and their acoustic signaling follows their current behavioral state. Whistles and echolocation clicks on long-term recordings produced by melon-headed whales (Peponocephala electra) at ...
Baumann-Pickering, Simone, Hildebrand, John A, Roch, Marie A, Schnitzler, Hans-Ulrich, Wiggins, Sean M   +4 more
core   +2 more sources

Differences in nutrient and undesirable substance concentrations in Maurolicus muelleri across the Bay of Biscay, Norwegian fjords, and the North Sea

Frontiers in Marine Science, 2023
IntroductionWe are having pressing issues of global food insecurity and malnutrition. Mesopelagic communities in the North Atlantic have been estimated to have high biomasses of organisms.
Yiou Zhu, Atabak Mahjour Azad, Marian Kjellevold, Carlos Bald, Bruno Iñarra, Paula Alvarez, Guillermo Boyra, Marc Berntssen, Lise Madsen, Lise Madsen, Martin Wiech   +10 more
doaj   +1 more source

Trophic-Mediated Pelagic Habitat Structuring and Partitioning by Sympatric Elasmobranchs

Frontiers in Marine Science, 2022
Pelagic elasmobranchs are key elements of oceanic ecosystems and must be preserved if marine trophic networks are to be kept in balance. Yet, they face intense fishing pressure that has been threatening their populations worldwide.
André S. Afonso, André S. Afonso, Bruno C. L. Macena, Bruno Mourato, Natalia P. A. Bezerra, Sibele Mendonça, Joyce D. G. R. de Queiroz, Fábio H. V. Hazin   +7 more
doaj   +1 more source

From the surface to the seafloor: How giant larvaceans transport microplastics into the deep sea. [PDF]

, 2017
Plastic waste is a pervasive feature of marine environments, yet little is empirically known about the biological and physical processes that transport plastics through marine ecosystems.
Choy, C Anela, Katija, Kakani, Robison, Bruce H, Sherlock, Rob E, Sherman, Alana D   +4 more
core   +1 more source

The protist community traces seasonality and mesoscale hydrographic features in the oligotrophic Sargasso Sea

Frontiers in Marine Science, 2022
Protists represent the majority of the eukaryotic diversity in the oceans. They have different functions in the marine food web, playing essential roles in the biogeochemical cycles.
Leocadio Blanco-Bercial, Rachel Parsons, Luis M. Bolaños, Rod Johnson, Stephen J. Giovannoni, Ruth Curry   +5 more
doaj   +1 more source

Accounting for Uncertainties in Biodiversity Estimations: A New Methodology and Its Application to the Mesopelagic Sound Scattering Layer of the High Arctic

Frontiers in Ecology and Evolution, 2022
Measures of biological diversity (biodiversity) are important for monitoring the state of ecosystems. Several indices and methods are used to describe biodiversity from field observations.
Bent Herrmann, Bent Herrmann, Bent Herrmann, Kristine Cerbule, Kristine Cerbule, Jure Brčić, Eduardo Grimaldo, Eduardo Grimaldo, Maxime Geoffroy, Maxime Geoffroy, Malin Daase, Jørgen Berge, Jørgen Berge, Jørgen Berge   +13 more
doaj   +1 more source

Microplastic interactions with North Atlantic mesopelagic fish [PDF]

ICES Journal of Marine Science, 2015
AbstractMicroplastics in the marine environment are well documented, and interactions with marine biota have been described worldwide. However, interactions with vertically migrating fish are poorly understood. The diel vertical migration of mesopelagic fish represents one, if not the largest, vertical migration of biomass on the planet, and is thus an
Lusher, Amy L., O'Donnell, Ciaran, Officer, Rick, O'Connor, Ian   +3 more
openaire   +1 more source

Life-history traits of the giant squid Architeuthis dux revealed from stable isotope signatures recorded in beaks [PDF]

, 2010
Peer ...
Alejandro B. Rodríguez-Navarro, Bode, Boyle, Cabana, Cherel, Cherel, Cherel, Cherel, Cherel, Chris S. Romanek, Clarke, Deagle, DeNiro, DeNiro, Field, González, Graham J. Pierce, Grist, Guerra, Guerra, Guerra, Hernández-López, Higgins, Hobson, Hobson, Hobson, Hunt, Jackson, McCutchan, Mendes, Miserez, Nixon, Parry, Pedro Álvarez-Lloret, Perales-Raya, Rau, Raya, Rodhouse, Roper, Ruiz-Cooley, Ruiz-Cooley, Schimmelmann, Seibel, Smith, Stowasser, Takai, Vanderklift, Webb, Zuur, Ángel F. González, Ángel Guerra   +50 more
core   +1 more source

Population ecology of mesopelagic fishes

, 2022
This thesis focuses mainly on mesopelagic fishes, and mesopelagic fish species Maurolicus muelleri. Mesopelagic fishes are found in the oceanic twilight zone starting at the end of the euphotic zone down to approximately 1000 meters. The mesopelagic zone is found in all world oceans, and the fishes that inhabit them potentially occupy the highest ...
openaire   +2 more sources