Results 71 to 80 of about 25,785 (279)

Nuclear multifragmentation induced by electromagnetic fields of ultrarelativistic heavy ions [PDF]

open access: yes, 1997
We study the disintegration of nuclei by strong electromagnetic fields induced by ultrarelativistic heavy ions. The proposed multi-step model includes 1) the absorption of a virtual photon by a nucleus, 2) intranuclear cascades of produced hadrons and 3)
Bondorf, J. P.   +4 more
core   +2 more sources

International Bottom Trawl Survey Working Group (IBTSWG) [PDF]

open access: yes, 2019
This report summarises the national contributions in 2018–2019 and the planning for the 2019–2020 surveys coordinated by the International Bottom Trawl Survey Working Group (IBTSWG). In the North Sea, the surveys are performed in quarters (Q) Q1 and Q3 while in the Northeast Atlantic the surveys are conducted in Q1, Q3, and Q4 with a suite of 14 ...
Alvested, Anja Helene   +39 more
openaire   +6 more sources

A review of participatory mapping in conservation science and practice

open access: yesConservation Science and Practice, EarlyView.
There has been a recent increase and diversification in the use of participatory mapping in the field of conservation, however, methodological standards remain both disjointed and confounding. We conducted a comprehensive review of the conservation participatory mapping literature and synthesized geographical, temporal, and topical trends across a ...
Michael B. Kowalski   +3 more
wiley   +1 more source

Deep-sea coral distribution on seamounts, oceanic islands, and continental slopes in the Northeast Atlantic [PDF]

open access: yes, 2007
A database of deep-water (\u3e 200 m) antipatharians, scleractinians, and gorgonians has been assembled for the NE Atlantic to determine what their distribution and diversity was before coral habitats became heavily impacted by bottom fishing gear ...
Davies, J   +3 more
core   +1 more source

Translating Ecological Integrity terms into operational language to inform societies

open access: yes, 2018
It is crucial that societies are informed on the risks of impoverished ecosystem health for their well-being. For this purpose, Ecological Integrity (EI) is a useful concept that seeks to capture the complex nature of ecosystems and their interaction ...
de Juan, Silvia   +3 more
core   +1 more source

Influence of Trawl Geometry and Vertical Distribution of Fish on Sampling with Bottom Trawl

open access: yesJournal of Northwest Atlantic Fishery Science, 1986
Studies were initiated at the Institute of Marine Research, Bergen, in 1984 with the aim of improving the reliability of bottom trawl and acoustic survey results for cod and haddock in the Barents Sea. Spread of the wings and doors and height of the trawl were measured during fishing operations, and acoustic recordings of fish densities were obtained ...
A Engås, O R Godø
openaire   +1 more source

Duck Tales: Spatio‐temporal dynamics of habitat use and prey relationships of a diving duck and its implication for conservation management

open access: yesConservation Science and Practice, EarlyView.
Shows the spatiotemporal predictability of wintering eiders based on monitoring data from 1993–2023 with intertidal and subtidal Marine Protected Areas (yellow and green, respectively), and a depiction of the current mismatch between eider hotspots and protection measures. Abstract Migratory animals often follow predictable spatiotemporal distributions
Kasper J. Meijer   +6 more
wiley   +1 more source

The effect of autotrawl systems on the performance of a survey trawl [PDF]

open access: yes, 2006
Three aspects of a survey bottom trawl performance—1) trawl geometry (i.e., net spread, door spread, and headrope height); 2) footrope distance off-bottom; and 3) bridle distance off-bottom—were compared among hauls by using either of two autotrawl ...
Kotwicki, Stan   +2 more
core  

Assessing Risk for Bycatch and Byproduct Species Using a Modified Sustainability Assessment for Fishing Effects (SAFE) Approach

open access: yesFish and Fisheries, EarlyView.
ABSTRACT Central to ecosystem‐based fisheries management is ensuring the sustainability of bycatch and byproduct species. However, the sustainability of these species is difficult to assess as the lack of information limits the use of traditional stock assessment methods.
Grant J. Johnson   +5 more
wiley   +1 more source

Batho-spatial distribution pattern and biomass estimate of the major demersal fishes in Lake Victoria [PDF]

open access: yes, 1974
A generalized bottom trawl exploratory survey was carried out on Lake Victoria to: (i) define the distributional pattern and magnitude of the lakewide demersal stocks, (ii) determine the commercial potential of Haplochromis spp.
Cordone, A.J., Kudhongania, A.W.
core  

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