Results 11 to 20 of about 3,908 (258)

The First Cut Is the Deepest: Trawl Effects on a Deep-Sea Sponge Ground Are Pronounced Four Years on

Frontiers in Marine Science, 2020
Few studies have described the effects of physical disturbance and post-recovery of deep-sea benthic communities. Here, we explore the status of deep-sea sponge ground communities four years after being impacted by an experimental bottom trawl.
Katelin M. Morrison, Heidi Kristina Meyer, Emyr Martyn Roberts, Hans Tore Rapp, Ana Colaço, Christopher Kim Pham   +5 more
doaj   +1 more source

High Mobility and Flexibility in the Habitat Use of Early Juvenile Pikeperch (Sander lucioperca) Based on a Mark-Recapture Experiment

Diversity, 2023
Disentangling the role of factors responsible for juvenile fish dispersal is essential to understand the ecology of individual species, setting the corresponding conservation status and evaluating the potential risk in case of invasion.
Petr Blabolil, Tomáš Jůza, Martin Čech, Jiří Peterka   +3 more
doaj   +1 more source

Quantity and biochemical composition of particulate organic matter in a highly trawled area (Thermaikos Gulf, Eastern Mediterranean Sea)

Advances in Oceanography and Limnology, 2015
Bottom trawling represents nowadays one of the most severe anthropogenic disturbances at sea, and determines large impacts on benthic communities and processes.
Antonio Pusceddu, Silvia Bianchelli, Roberto Danovaro   +2 more
doaj   +1 more source

Spatial Management Units as an Ecosystem-Based Approach for Managing Bottom-Towed Fisheries in the Central Mediterranean Sea

Frontiers in Marine Science, 2020
Marine ecosystems are being continually impacted by human activities and, among these, fisheries have been one of the most damaging. Fisheries modify the structure and functioning of food-webs through biomass removal and physical damage to the seabed ...
Valentina Lauria, Valentina Lauria, Michele Gristina, Fabio Fiorentino, Martin J. Attrill, Germana Garofalo   +5 more
doaj   +1 more source

Assessing the potential vulnerability of sedimentary carbon stores to bottom trawling disturbance within the UK EEZ

Frontiers in Marine Science, 2022
It is estimated that within the UK exclusive economic zone (UK EEZ), 524 Mt of organic carbon (OC) is stored within seabed sediment. However, the stability and potential vulnerability of OC in these sediments under anthropogenic stressors, such as bottom
Kirsty E. Black, Craig Smeaton, William R. Turrell, William E. N. Austin, William E. N. Austin   +4 more
doaj   +1 more source

Stable isotopes reveal the effect of trawl fisheries on the diet of commercially exploited species

Scientific Reports, 2017
Bottom trawling can change food availability for benthivorous demersal species by (i) changing benthic prey composition through physical seabed impacts and (ii) by removing overall benthic consumer biomass increasing the net availability of benthic prey ...
Hilmar Hinz, Joan Moranta, Stephen Balestrini, Marija Sciberras, Julia R. Pantin, James Monnington, Alex Zalewski, Michel J. Kaiser, Mattias Sköld, Patrik Jonsson, Francois Bastardie, Jan Geert Hiddink   +11 more
doaj   +1 more source

Modelling potential impacts of bottom trawl fisheries on soft sediment biogeochemistry in the North Sea†

Geochemical Transactions, 2001
Bottom trawling causes physical disturbance to sediments particularly in shelf areas. The disturbance due to trawling is most significant in deeper areas with softer sediments where levels of natural disturbance due to wave and tidal action are low.
Parker Ruth, Malcolm Stephen J, Jennings Simon, Duplisea Daniel E, Sivyer David B   +4 more
doaj   +1 more source

Decapod abundance and species richness in the bycatch of Xiphopenaeus kroyeri (Heller, 1862) fishery, Santa Catarina, southern Brazil

Nauplius, 2019
We aimed to analyze the crustacean bycatch from the Xiphopenaeus kroyeri fishery in the Santa Catarina State and compare the bycatch’s biomass to that of the target species.
Gilson Stanski, Geslaine R. L. Goncalves, Raphael C. Grabowski, Milena R. Wolf, Antonio Leão Castilho   +4 more
doaj   +1 more source

Limit theorems for trawl processes [PDF]

Electronic Journal of Probability, 2021
In this work we derive limit theorems for trawl processes. First,we study the asymptotic behaviour of the partial sums of the discretized trawl process $(X_{iΔ_{n}})_{i=0}^{\lfloor nt\rfloor-1}$, under the assumption that as $n\uparrow\infty$, $Δ_{n}\downarrow0$ and $nΔ_{n}\rightarrowμ\in[0,+\infty]$.
Pakkanen, MS, Passeggeri, R, Sauri, O, Veraart, AED   +3 more
openaire   +4 more sources

Quantification of Chaoborus and small fish by mobile upward-looking echosounding

Journal of Limnology, 2018
Chaoborus larvae inhabit frequently the water column of lakes, when they can be mistaken for small fish. Because larvae ascend up to the blind zone of downward-looking echo sounding at night, quantitative acoustic estimation of them is possible only with
Roman Baran, Michal Tušer, Helge Balk, Petr Blabolil, Martin Čech, Vladislav Draštík, Jaroslava Frouzova, Tomáš Jůza, Jan Kubecka   +8 more
doaj   +1 more source