Results 91 to 100 of about 40,659 (288)

Bottom-trawling along submarine canyons impacts deep sedimentary regimes [PDF]

, 2017
Unidad de excelencia María de Maeztu MdM-2015-0552Many studies highlight that fish trawling activities cause seafloor erosion, but the assessment of the remobilization of surface sediments and its relocation is still not well documented.
Juan Diaz, Xènia, Juan-Díaz, Xènia, Martín de Nascimento, Jacobo, Martín, Jacobo, Masqué Barri, Pere, Masqué Barri, Pere, Palanques, Albert, Paradis Vilar, Sarah, Puig i Alenyà, Pere   +8 more
core   +2 more sources

CheckEM: An open‐source toolkit for standardising, cleaning and visualising stereo‐video fish survey data

Methods in Ecology and Evolution, EarlyView.
Abstract Effective research and monitoring requires accurate, interoperable and representative data. Stereo‐video based methods are commonly used to survey fish and are rapidly expanding globally due to their cost‐effectiveness, ability to provide accurate body size measurements, non‐destructive approach and capacity to create permanent data records ...
Brooke A. Gibbons, Claude Spencer, Jordan Goetze, Dianne McLean, Todd Bond, Jacquomo Monk, Matthew Navarro, Daniel Agnello, Charlotte Aston, Charlie Huveneers, Stephen J. Newman, Shaun Wilson, Andrew Hoey, Ben Radford, Conrad W. Speed, Daniel Ierodiaconou, Tim Langlois   +16 more
wiley   +1 more source

Carbon emission due to excess fuel consumption by the trawlers of Thoothukudi, Southeast Coast of India

Carbon Management, 2017
Single-day trawling is commercially practiced along Thoothukudi coast, involving a total of 275 trawlers of varying length range operated from Thoothukudi fishing harbour (8°47’N, 78°9.5’E).
J. Amala Shajeeva, N. Neethiselvan, B. Sundaramoorthy, K. Masilan, D. Arunjenish, M. Rajakumar, T. Ravikumar, V. Baiju   +7 more
doaj   +1 more source

Use of remotely-derived bathymetry for modelling biomass in marine environments [PDF]

, 2013
The paper presents results on the influence of geometric attributes of satellite-derived raster bathymetric data, namely the General Bathymetric Charts of the Oceans, on spatial statistical modelling of marine biomass. In the initial experiment, both the
Godbold, Jasmin A., Niedzielski, Tomasz, Priede, Imants G., Spallek, Waldemar A., Wieczorek, Małgorzata M.   +4 more
core   +2 more sources

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

Overlap of nonbreeding wandering albatrosses with fisheries and implications for colony‐specific population trajectories at South Georgia

Conservation Biology, EarlyView.
Abstract Bycatch in fisheries is one of the most serious threats to pelagic seabirds, causing major population declines. Mitigation measures can reduce bycatch substantially, but many fisheries fail to apply best practices, and seabird mortality remains high.
V. Warwick‐Evans, E. J. Pearmain, R. A. Phillips   +2 more
wiley   +1 more source

Quantification and mitigation of bottom-trawling impacts on sedimentary organic carbon stocks in the North Sea [PDF]

Biogeosciences
The depletion of sedimentary organic carbon stocks by the use of bottom-contacting fishing gear and the potential climate impacts resulting from remineralization of the organic carbon to CO2 have recently been heavily debated.
L. Porz, W. Zhang, N. Christiansen, J. Kossack, U. Daewel, C. Schrum, C. Schrum   +6 more
doaj   +1 more source

Multi‐event modeling of Hector's dolphin (Cephalorhynchus hectori) fecundity using four decades of monitoring: Implications for current management of bycatch

Conservation Science and Practice, EarlyView.
Updated estimate of fecundity for Hector's dolphin is lower and more precise than prior estimation. This latest estimate suggests a lower capacity for population growth than previously thought and a reduced resilience to anthropogenic threats. Abstract Prediction of future population trajectories is vital in the management of threatened species but ...
Steph Bennington, Peter W. Dillingham, Lindsay Wickman, Trudi Webster, Tom Brough, Elisabeth Slooten, Stephen M. Dawson, William J. Rayment   +7 more
wiley   +1 more source

Predicting Historical Populations and Evaluating Shifting Baselines of Traditionally Exploited Fisheries

Fish and Fisheries, EarlyView.
ABSTRACT Development of data‐intensive stock assessment and ecosystem‐based models has improved our understanding of shifting species abundance in response to fishing, ocean ecology, and species interactions. Along with this analytical progress is evidence that many stocks lack data required for complex models, resulting in data‐limited options for ...
Allegra Ervin, Robert M. Cerrato, Adrian Jordaan, Michael G. Frisk   +3 more
wiley   +1 more source

Global Analysis of Shallow Underwater Fish Observation Research: 70 Years of Progress, Persistent Geographic Biases and a Path Forward

Fish and Fisheries, EarlyView.
ABSTRACT Marine ecosystems are increasingly threatened by overfishing, pollution, coastal development and climate change, underscoring the need for long‐term, representative information on key fish populations and habitats to inform management and policy.
Angus John van Wyk, Rick D. Stuart‐Smith, Jordan S. Goetze, Eva Maire, Elodie Heyns‐Veale, Kaylee Smit, Tim J. Langlois, M. Aaron MacNeil, Alejandro Pérez‐Matus, Amanda T. Lombard, Ana Carolina, Christy Semmens, Ella Clausius, Fernanda A. Rolim, Jonathan S. Lefcheck, Jacquomo Monk, Joanna K. Schmid, Katherine Tattersall, Laura Ghigliotti, Luther Adams, Melita Samoilys, Pascale Chabanet, Paul Whomersley, Peter Walsh, Reiji Masuda, Russell Brainard, Anthony Bernard   +26 more
wiley   +1 more source