Results 31 to 40 of about 430 (170)

Spatiotemporal patterns of variability in the abundance and distribution of winter-spawned pelagic juvenile rockfish in the California Current.

PLoS ONE, 2021
Rockfish are an important component of West Coast fisheries and California Current food webs, and recruitment (cohort strength) for rockfish populations has long been characterized as highly variable for most studied populations.
John C Field, Rebecca R Miller, Jarrod A Santora, Nick Tolimieri, Melissa A Haltuch, Richard D Brodeur, Toby D Auth, E J Dick, Melissa H Monk, Keith M Sakuma, Brian K Wells   +10 more
doaj   +1 more source

Hydrodynamic interactions in midwater trawl nets: combined effects of flow velocity and door spreading through numerical and experimental approaches

Brodogradnja
Owing to escalating fuel costs and dwindling fish stocks, optimising midwater trawl efficiency requires a thorough investigation of net design variables.
Zhao Cheng, Xiaobin Li, Yonghe Xie, Panpan Jia, Li Guoqiang, Wang Wei   +5 more
doaj   +1 more source

San Francisco Estuary mysid abundance in the fall, and the potential for competitive advantage of Hyperacanthomysis longirostris over Neomysis mercedis

California Fish and Wildlife Journal, 2020
Historically, the native mysid Neomysis mercedis was a key source of food for fish in the San Francisco Estuary (SFE). Following the introductions of the over-bite clam and many invasive zooplankton species in the mid-1980s, populations of native ...
Michelle Avila, Rosemary Hartman
doaj   +1 more source

FEATURES OF FISH BEHAVIOR IN THE ACTION ZONE OF MIDWATER TRAWL

Vestnik of Astrakhan State Technical University. Series: Fishing industry, 2017
Researches in the field of behavior and distribution of fish at different stages of fishing were conducted using midwater trawls in order to increase fishing efficiency, subject to the fact that, besides fish behavior, parameters of midwater trawls and types of trawling affect the efficiency of trawling.
Alexander Victorovich Melnikov, Dmitry Alekseevich Okunev, Svetlana Nikolaevna Khusainova   +2 more
openaire   +1 more source

Trace Element Contamination in Top Predatory Elasmobranchs From the Southern Black Sea: Implications for Ecosystem Health and Risk Assessment

Environmental Toxicology, EarlyView.
ABSTRACT Environmental pollution resulting from the rapid increase in human population, urbanization, intensive use of chemicals in agriculture, and industrial development has reached a level that threatens natural life today. Trace elements are one of the most important factors causing significant levels of pollution in the environment and are added ...
Levent Bat, Süleyman Özdemir, Zekiye Birinci Özdemir, Ayşah Öztekin   +3 more
wiley   +1 more source

Mesophotic octocoral larval settlement preferences and behaviors

Restoration Ecology, EarlyView.
Abstract Introduction Lab‐based coral reproduction is advancing restoration efforts to support coral populations injured by the 2010 Deepwater Horizon oil spill. Objectives This study aimed to answer foundational questions concerning coral spawning and larval settlement that need to be resolved for these mesophotic and deep‐sea coral species before ...
Mark McCauley, Julia Johnstone, William G. Jenkins, Jayci Grosso, Arielle Pollock, Jonathan M. Quigley, Leigh‐Anne Carlson, Christopher L. Gardner, Peter J. Etnoyer, Kristopher G. Benson, Amanda W. J. Demopoulos   +10 more
wiley   +1 more source

Study on Dynamic Characteristics and Fracture Failure of Rigid Truss Trawl System During Towing Process

Journal of Marine Science and Engineering
Deep-sea fisheries depend on various fishing methods, including trawling, purse seining, and longline fishing, among others. Studying the dynamic characteristics of trawling operations is essential for the trawl mechanism.
Dapeng Zhang, Bowen Zhao, Yi Zhang, Keqiang Zhu, Jin Yan   +4 more
doaj   +1 more source

Stocks and fishery of cod (Gadus macrocephalus, Gadidae) in the northwestern Bering Sea in 1965–2022

Известия ТИНРО, 2023
For pacific cod in the northwestern Bering Sea, biomass of the summer-fall feeding aggregations in the specified area of their highest density (polygon) is considered as a stock unit.
A. B. Savin
doaj   +1 more source

Interannual Variations in Distribution and Density of Japanese Anchovy (Engraulis japonicus) Larvae in the Shelf‐Break Region of East China Sea During Spring (2001–2022)

Fisheries Oceanography, Volume 35, Issue 5, Page 777-794, September 2026.
ABSTRACT Japanese anchovy (Engraulis japonicus) is the most abundant fish in the East China Sea (ECS) and an important fishery resource throughout its life stages. Using samples collected along the ECS shelf‐break in April over a 22‐year period (2001–2022), we examined the horizontal distribution and interannual variability of larval density (mean ...
Chiyuki Sassa, Satoshi Kitajima, Motomitsu Takahashi, Koh Nishiuchi, Yoshinobu Konishi, Youichi Tsukamoto   +5 more
wiley   +1 more source

VERDA: A Multisampler Tool for Mesopelagic Nets

Journal of Marine Science and Engineering, 2023
Different types and systems to discriminate plankton samples at different strata in the water column have been developed in recent decades. For sampling at sufficient depth, opening and closing zooplankton multinets are ideal because there is no ...
Arturo Castellón, María Pilar Olivar
doaj   +1 more source