Results 91 to 100 of about 16,008 (241)

Management Implications of Mesopelagic Forage Fisheries for Bigeye Tuna Stocks

Fisheries Management and Ecology, EarlyView.
ABSTRACT Many large marine predators forage on mesopelagic fish stocks, including commercially valuable tunas. The mesopelagic is under increasing interest for commercial exploitation, given its large biomass with potential to supply fishmeal for aquaculture feed or fish oil.
Ciara Willis, Di Jin, Melina Kourantidou, Simon R. Thorrold   +3 more
wiley   +1 more source

Nocturnal depth distribution of western North Atlantic swordfish (Xiphias gladius, Linnaeus, 1758) in relation to lunar illumination [PDF]

, 2007
Swordfish are known to undergo large diel vertical movements from surface waters at night to \u3e 300 m depth during the day. Evidence presented over the past several deeades suggests the lunar cycle affects these vertical migrations.
Loefer, J.L., McGovern, J.C., Sedberry, George R.   +2 more
core   +2 more sources

Environmental Drivers of Jumbo Squid During Fishery Collapse in the Gulf of California (2019–2024)

Fisheries Oceanography, EarlyView.
ABSTRACT The jumbo squid (Dosidicus gigas) is a cephalopod endemic to the eastern Pacific with significant ecological and economic importance. Its exploitation in the Gulf of California (GC) peaked in the 1990s, with catches exceeding 100,000 tons, but collapsed in 2009 and virtually disappeared by 2015, largely due to environmental changes and ...
Mario Vásquez‐Ortiz, Juan Roberto F. Vallarta‐Zárate, Jesús E. Osuna‐Soto, Emma Verónica Pérez‐Flores, Leslie Altamirano‐López, Ramón Isaac Rojas‐González   +5 more
wiley   +1 more source

Diel vertical migration of Peridiniopsis niei, Liu et al., a new species of dinoflagellates in an eutrophic bay of Three-Gorge Reservoir, China [PDF]

, 2010
In spring, a typical dinoflagellate (Peridiniopsis niei Liu et al.) constitutes most of the phytoplankton biomass in most of eutrophic bay of Three-Gorge Reservoir (TGR, China). There are few field observations on vertical migration of the members of the
Cai, QH, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China, Cai, Qinghua, Kong, Linghui, Li, Daofeng, Wang, Lan, Xu, Yaoyang   +5 more
core  

Vertical distribution of zooplankton in a shallow peatland pond: the limiting role of dissolved oxygen [PDF]

, 2013
We investigated the diel vertical distribution patterns of microcrustacean zooplankton (Cladocera, Copepoda) in a shallow pond (max. depth: 70 cm) of the Öreg-turján peatland (Ócsa, Central Hungary) during three 24-h periods in July (19–20th), August (17–
Ahlgren, Arvola, Attila L. Péntek, Barker, Bence Tóth, Blinn, Boix, Branco, Burks, Csaba F. Vad, Ford, Fox, Gilbert, Gliwicz, Gulati, Heisey, Hembre, Herbert, Keresztessy, Kessler, Keve T. Kiss, Kring, Kuczyńska-Kippen, Lampert, Larsson, Lauridsen, Lynch, Massana, Meerhoff, Müller-Navarra, Nurminen, Oertli, Orcutt, Paul, Pilati, Ranta, Rautio, Rautio, Rhode, Rocha, Romanovsky, Salonen, Sell, Tinson, Utermöhl, V.-Balogh, Vad, Vadstein, von Elert, Wanzenböck, Weider, Williamson, Williamson, Winder, Zaret, Zsófia Horváth, Éva Ács   +56 more
core   +1 more source

Diel vertical migration of zooplankton in the Northeast Atlantic [PDF]

Journal of Plankton Research, 1996
Acoustic Doppler current profiler (ADCP) data collected during August-September 1991 reveal the diel migration of zooplankton in the northeast Atlantic (50-60°N, 10-40°W). Volume scattering strength has been calculated, from which the speed and depth of migrations have been stud- ied. There are usually at least two layers displaying nocturnal migration,
openaire   +2 more sources

Vertical Habitat Use by Japanese Jack Mackerel Trachurus japonicus Inferred From a Biologging Study in Tokyo Bay

Fisheries Oceanography, EarlyView.
ABSTRACT The movement ecology of Trachurus japonicus in the adult stage remains poorly understood because observing their underwater behavior over long periods is challenging. This study aimed to examine vertical habitat use by T. japonicus using electronic tags. Ninety fish were tagged and released in November 2022 in Tokyo Bay, Japan.
Junji Kinoshita, Yuki Fujinami, Junichi Imoto, Tohya Yasuda   +3 more
wiley   +1 more source

Using the Diet Composition of Adult Chinook Salmon to Understand the Regional Structure of Salish Sea Forage Communities

Fisheries Oceanography, EarlyView.
ABSTRACT Small pelagic fish and other forage species are patchily distributed over space and time, resulting in variable foraging conditions experienced by their predators. The high‐resolution data necessary to understand the spatiotemporal structure of forage communities are challenging to collect with expensive fishery‐independent surveys, meaning ...
Wesley L. Greentree, William D. P. Duguid, Micah J. Quindazzi, Bridget Maher, Francis Juanes   +4 more
wiley   +1 more source

Chlorophyll shading reduces zooplankton diel migration depth in a high-resolution physical–biogeochemical model [PDF]

Ocean Science
Zooplankton diel vertical migration (DVM) is critical to ocean ecosystem dynamics and biogeochemical cycles, by supplying food and injecting carbon into the mesopelagic ocean (200–800 m).
M. A. Poupon, M. A. Poupon, L. Resplandy, L. Resplandy, J. Garwood, C. Stock, N. Zadeh, J. Y. Luo   +7 more
doaj   +1 more source

Effects of Dissolved Oxygen and Hypoxia on Catch Rates of Nearshore Groundfishes in a Recreational Hook and Line Fishery

Fisheries Oceanography, EarlyView.
ABSTRACT Global climate change is intensifying ocean deoxygenation, particularly in eastern boundary current systems such as the California Current. This study investigates the impact of hypoxic events on a nearshore, multispecies recreational groundfish fishery along the Oregon coast.
Leif K. Rasmuson, Alison D. Whitman, Brandy T. Cervantes, Jonathan P. Fram   +3 more
wiley   +1 more source