Results 71 to 80 of about 830,420 (240)

Modeling the characteristics of a bottom trawl

Trudy VNIRO
The purpose of the work is to create software for calculating the structural, geometric and strength characteristics of mesh bottom trawl structures, intended for modeling technological and hydrodynamic processes of trawl structures.Methods used: The software “Calculation of the structural, technological and power characteristics of a bottom mesh trawl”
A. A. Nedostup, A. O. Razhev, P. V. Nasenkov   +2 more
openaire   +1 more source

Assessing the overlap between fishing and chondrichthyans exposes high‐risk areas for bycatch of threatened species

Ecosphere
Chondrichthyans (sharks, rays, skates, and chimaeras) make up one of the oldest and most ecologically diverse vertebrate groups, yet they face severe threats from fishing, necessitating improved management strategies. To effectively manage these species,
Federico Maioli, Benjamin Weigel, Max Lindmark, Chiara Manfredi, Walter Zupa, Isabella Bitetto, Tommaso Russo, Michele Casini   +7 more
doaj   +1 more source

Quantifying habitat preference of bottom trawling gear

ICES Journal of Marine Science, 2020
Continental shelves around the world are subject to intensive bottom trawling. Demersal fish assemblages inhabiting these shelves account for one-fourth of landed wild marine species. Increasing spatial claims for nature protection and wind farm energy
N. Hintzen, G. Aarts, J. Poos, K. J. van der Reijden, A. Rijnsdorp   +4 more
semanticscholar   +1 more source

Trawling in the Mediterranean: An Exploration of Empirical Relations Connecting Fishing Gears, Otterboards and Propulsive Characteristics of Fishing Vessels

Frontiers in Marine Science, 2019
Fishing pressure is often expressed in terms of a vessels physical attributes, like tonnage and engine power, while a common definition of fishing capacity identifies vessel size as a convenient proxy for the size of the gear used.
Antonello Sala, Antonello Sala, Emilio Notti, Sara Bonanomi, Jacopo Pulcinella, Alessandro Colombelli   +5 more
doaj   +1 more source

Comparing environmental metabarcoding and trawling survey of demersal fish communities in the Gulf of St. Lawrence, Canada

Environmental DNA, 2021
Biodiversity assessment is an important part of conservation management that ideally can be accomplished with noninvasive methods without influencing the structure and functioning of ecosystems.
Seyedeh Fatemeh Afzali, Hugo Bourdages, Martin Laporte, Claire Mérot, Eric Normandeau, Céline Audet, Louis Bernatchez   +6 more
doaj   +1 more source

Environmental Impacts of the Bioeconomy: A Systematic Review of Variables, Methods, Sectors and Policy Relevance

Sustainable Development, EarlyView.
ABSTRACT The bioeconomy has become a component of sustainability strategies addressing climate change, resource scarcity and economic transformation. Despite a growing body of literature, evidence on the environmental impacts of the bioeconomy remains fragmented, heterogeneous and distributed across sectors and regions. This paper provides a systematic
Javier Coca, Valeria Ferreira, Laia Pié
wiley   +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

Experimental bottom trawling finds resilience in large-bodied infauna but vulnerability for epifauna and juveniles in the Frisian Front.

Marine Environmental Research, 2020
In this study, we analysed the benthic effects of two in situ fisheries disturbance experiments using a combination of side-scan sonar, high definition underwater video, sediment profile imagery, and box core sampling techniques after conventional beam ...
J. Tiano, K. J. van der Reijden, Sarah O'Flynn, O. Beauchard, Sietse van der Ree, Jelmer van der Wees, T. Ysebaert, K. Soetaert   +7 more
semanticscholar   +1 more source

Long‐term recovery and food web response of benthic macrofauna following cessation of bottom trawling in a marine protected area

Conservation Science and Practice
The understanding of the depletion of species and communities and recovery following the reduction of pressures is fundamental in conservation biology. The impact of bottom trawl fisheries on benthic communities has been well studied, but there are few ...
Mattias Sköld, Mats Blomqvist, Clare Bradshaw, Patrik Börjesson, Peter Göransson, Håkan Wennhage   +5 more
doaj   +1 more source

Ontogeny of foraging behaviour in an opportunistic gull inhabiting urban marine ecosystems

Wildlife Biology, EarlyView.
Urbanization affects ecosystems by reducing biodiversity and displacing species from native habitats. While some suffer, others, like urban wildlife, adapt through innovative feeding and behaviours that improve their fitness in human‐altered settings. Despite research on wildlife in urban areas, the development of foraging behaviour in urban species is
Joan Navarro, Víctor Martín-Vélez, Joan Giménez, José Antonio Garcia, Pablo Cermeño, Jordi Figuerola, Raül Aymí, Tomás Montalvo   +7 more
wiley   +1 more source