Results 61 to 70 of about 41,058 (312)

300 Years of Degradation in Wales Estuaries and Coasts

Natural Resources Forum, EarlyView.
ABSTRACT The world's oceans are in a severe state of degradation, yet our understanding of that degradation is often based on changes observed only in the past 20–50 years. This narrow view leads to marine conservation efforts that aim to preserve already degraded ecosystems, shaped by shifted ecological baselines.
Richard K. F. Unsworth, Blaise Bullimore, Leanne C. Cullen‐Unsworth, Benjamin L. H. Jones   +3 more
wiley   +1 more source

Particle sources and transport in stratified Nordic coastal seas in the Anthropocene

Elementa: Science of the Anthropocene, 2018
Particles of all origins (biogenic, lithogenic, as well as anthropogenic) are fundamental components of the coastal ocean and are re-distributed by a wide variety of transport processes at both horizontal and vertical scales.
Torsten Linders, Eduardo Infantes, Alyssa Joyce, Therese Karlsson, Helle Ploug, Martin Hassellöv, Mattias Sköld, Eva-Maria Zetsche   +7 more
doaj   +1 more source

Modeling Skin Mark Temporal Variations to Estimate the Sex of Delphinids with Low Sexual Dimorphism: Implications for Management and Conservation

Integrative Zoology, EarlyView.
This work aimed to apply the principles of skin mark analysis to a cetacean species to build a sex‐discrimination model exclusively based on photographic material. Relevant differences between sexes emerged in markings, with males presenting more social, aggression‐related, and fishing‐related marks overall, and a stronger tendency of mark accumulation
Alice Turchi, Giulia Pedrazzi, Alex Mattiussi, Maria S. Labriola, Daniele Petrone, Sofia Rinalduzzi, Giancarlo Giacomini, Daniela Silvia Pace   +7 more
wiley   +1 more source

Geographic Patterns of Head Morphology in Syngnathus typhle Across Marine Regions

Integrative Zoology, EarlyView.
Morphometric analysis of Syngnathus typhle head shape shows distinct geographic patterns across Baltic, North, Atlantic, and Mediterranean marine regions, driven by variation in snout length, head depth, and eye position. Findings provide a non‐invasive baseline for conservation monitoring.
Miriam Ravisato, Glenn Le Floch, Cataldo Pierri, Vincent Bels, José J. Castro‐Hernandez, Raphael Cornette, Luca Giannattasio, Michele Gristina, Airam Guerra, Charlotta Kvarnemo, Tamara Lazic, Patrick Louisy, Nuno Monteiro, Bruno Serranito, Marco Spoto, Beatriz Taboada, Eric Feunteun   +16 more
wiley   +1 more source

Trawling-Induced Sedimentary Dynamics in Submarine Canyons of the Gulf of Palermo (SW Mediterranean Sea)

Journal of Marine Science and Engineering
Bottom trawling in submarine canyons can affect their sedimentary dynamics, but studies addressing this topic are still scarce. In the Gulf of Palermo (NW Sicily, SW Mediterranean Sea), bottom trawling occurs on the continental slope, but principally ...
Marta Arjona-Camas, Claudio Lo Iacono, Pere Puig, Tommaso Russo, Albert Palanques   +4 more
doaj   +1 more source

Improving selection in south eastern Australian whiting (Sillago spp.) trawls: effects of modifying the body, extension and codend

Scientia Marina, 2005
In response to a shift towards directed targeting of whiting, Sillago spp. by some penaeid trawlers in coastal waters off New South Wales, Australia, 3 experiments were done to examine the effects on the size and species selectivity of trawls associated ...
Matt K. Broadhurst, Damian J. Young, Charles A. Gray, Michael E.L. Wooden   +3 more
doaj   +1 more source

Crushing and Cutting: Shape Variation and Morphological Integration Between the Claws of Two Swimming Crab Species (Brachyura: Portunidae)

Acta Zoologica, EarlyView.
ABSTRACT This study investigated shape variations and morphological integration between the components of crusher and cutter claws in two species of swimming crabs, Callinectes danae and Callinectes ornatus. The propodi and dactyli of the claws were analysed in males and females of both species, using geometric morphometric techniques to identify ...
Julia Tadiotto, Alexandre Ribeiro da Silva, Julia Fernandes Perroca, Rogerio Caetano Costa, Caio Santos Nogueira   +4 more
wiley   +1 more source

Morphometric characteristics of Antarctic krill (Euphausia superba) and finfish bycatch in the krill fishery in the waters of South Orkney Islands during the 2022/23 fishing season

Frontiers in Marine Science
Determination of bar spacing of bycatch reduction devices (BRDs) should consider species composition and morphometric characteristics (particularly width) of target species krill and bycatch. This study conducted a scientific investigation of the finfish
Zhongqiu Wang, Zhongqiu Wang, Shuo Ma, Shuo Ma, Yongjin Wang, Yongjin Wang, Lumin Wang, Lumin Wang   +7 more
doaj   +1 more source

Trawling disturbance on benthic ecosystems and consequences on commercial species: a northwestern Mediterranean case study

Scientia Marina, 2014
Trawling is known to disturb benthic communities and habitats, which may in turn indirectly affect populations of commercial species that live in close association with the seabed.
Alba Muntadas, Montserrat Demestre, Silvia de Juan, Chris L.J. Frid   +3 more
doaj   +1 more source

Gross energy requirement in fishing operations [PDF]

, 2013
Energy is a key input into the fish harvesting process. Efficient use of energy helps in reducing operational costs and environmental impact, while increasing profits.
Boopendranath, M.R., Shahul Hameed, M.
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