نتایج جستجو برای: bottom trawling

تعداد نتایج: 60372  

2002
Mary M. Nishimoto Libe Washburn

Annual midwater trawling surveys (sampling at depths of 20 to 40 m) in early summer 1998 and 1999 revealed strong interannual variability in the patterns of abundance of late-stage larval and juvenile fishes in the Santa Barbara Channel. In June 1998, sampling revealed high concentrations of fishes in the center of a cyclonic eddy in the western Channel corresponding to the lowest dynamic heigh...

Journal: :Current Biology 2007
Nigel Williams

this is to slow down. They slow way down.” Biologists are concerned about the orange roughy, grenadier, deepsea rockfish, oreo and Patagonian toothfish among others. The orange roughy is so slow growing that it is not sexually mature until 34 years old. It can live to 150. “When you buy orange roughy you are likely eating a fish that is at least 50 years old,” says Krista Baker of Memorial Univ...

Journal: :Zoology in The Middle East 2022

Sharks are one of the most threatened groups marine animals because high exploitation rates coupled with low resilience to fishing pressure. We provide information on current status young sharks caught in nets Iskenderun and Mersin Bays eastern Mediterranean, based fishery-dependent surveys conducted between 2010 2021. were found bycatches trawling nets, trammel bottom longlines lines. Incident...

2001
M. Bergmann P. G. Moore

The Clyde Sea Nephrops fishery produces large amounts of invertebrate discards. Of these, as much as 89% are decapod crustaceans, including the swimming crab Liocarcinus depurator (Linnaeus, 1758), the squat lobster Munida rugosa (Fabricius, 1775) and the hermit crab Pagurus bernhardus (Linnaeus, 1758). The short-term mortality of these species was assessed following trawling and periods of aer...

2017
Michael Clark David Tilman

Global agricultural feeds over 7 billion people, but is also a leading cause of environmental degradation. Understanding how alternative agricultural production systems, agricultural input efficiency, and food choice drive environmental degradation is necessary for reducing agriculture’s environmental impacts. A meta-analysis of life cycle assessments that includes 742 agricultural systems and ...

2017
L. Guida C. Awruch T. I. Walker R. D. Reina

Assessing fishing effects on chondrichthyan populations has predominantly focused on quantifying mortality rates. Consequently, sub-lethal effects of capture stress on the reproductive capacity of chondrichthyans are largely unknown. We investigated the reproductive consequences of capture on pregnant southern fiddler rays (Trygonorrhina dumerilii) collected from Swan Bay, Australia, in respons...

2007
J. G. HIDDINK

1. Methods for assessing habitat sensitivity to human impacts are needed to gauge the sustainability of existing impacts, develop spatial management plans and support meaningful environmental impact assessments. These methods should be quantitative, validated, repeatable and applicable at the scales of impact and management. 2. Existing methods for assessing the sensitivity of marine habitats t...

Journal: :Ecological Indicators 2023

The ecosystem approach to fisheries management needs information of not just where bottom trawlers operate but also on their impact the seabed, which is highly relevant EU Marine Strategy Framework Directive (MSFD) Descriptor D6, seafloor integrity. In this study, we assess benthic trawling in Eastern Mediterranean areas primarily fished by Greek fleet. Seabed habitat sensitivity was modelled u...

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