Results 81 to 90 of about 15,856 (229)

Models on diel vertical migration

, 1993
To clarify what can be expected from models the role of modelling in the scientific process in relation to experiments and field studies is addressed. Hypotheses to explain vertical migration are reviewed with respect to the selection mechanism assumed; it is asked whether group selection instead of individual selection arguments are used explicitly or
openaire   +3 more sources

Mallard response to experimental human disturbance on sanctuary areas is mediated by hunting

Wildlife Biology, EarlyView.
Wildlife managers often provide spatial sanctuaries for wildlife to escape both lethal (e.g. hunting) and non‐lethal (e.g. non‐consumptive recreation) human disturbance. However, as societal interest in outdoor recreation continues to climb, many areas face added pressure to allow recreation, yet studies increasingly demonstrate negative effects of ...
Abigail G. Blake‐Bradshaw, Nicholas M. Masto, Cory J. Highway, Allison C. Keever, Jamie C. Feddersen, Heath M. Hagy, Bradley S. Cohen   +6 more
wiley   +1 more source

Diel Vertical Migrators Respond to Short‐Term Upwelling Events

Geophysical Research Letters
Pelagic organisms inhabiting coastal upwelling regions face a high risk of advection away from the nearshore productive habitat, potentially leading to mortality.
Mei Sato, Kelly J. Benoit‐Bird
doaj   +1 more source

No escape from microplastics: Contamination of reef manta ray feeding areas in a remote, protected archipelago

Conservation Science and Practice, EarlyView.
We found microplastic contamination of the upper water column around the Chagos Archipelago, a remote, protected archipelago in the central Indian Ocean. Key aggregation areas for reef manta rays (Mobula alfredi) were contaminated, putting them at risk of microplastic ingestion.
J. Savage, J. L. Harris, H. J. Koldewey, T. B. Letessier, M. Rowcliffe, D. Morritt   +5 more
wiley   +1 more source

Shark predation on migrating adult American eels (Anguilla rostrata) in the Gulf of St. Lawrence. [PDF]

PLoS ONE, 2012
In an attempt to document the migratory pathways and the environmental conditions encountered by American eels during their oceanic migration to the Sargasso Sea, we tagged eight silver eels with miniature satellite pop-up tags during their migration ...
Mélanie Béguer-Pon, José Benchetrit, Martin Castonguay, Kim Aarestrup, Steven E Campana, Michael J W Stokesbury, Julian J Dodson   +6 more
doaj   +1 more source

Classification of European Illex coindetii and Loligo forbesii Squid Stocks by Trace Element Analysis of Statoliths

Fisheries Management and Ecology, EarlyView.
ABSTRACT We investigated whether statolith microchemistry analysis could classify ommastrephid and loliginid squid species into fishery stocks. Statolith nucleus (early life stage) and edge (life stage at time before catch) of Illex coindetii (Verany, 1839) and Loligo forbesii (Steenstrup, 1856) from various areas of the North East Atlantic Ocean and ...
Bianca T. C. Bobowski, Anne Marie Power, Finlay Burns, Pierluigi Carbonara, Danila Cuccu, Maria Cristina Follesa, Klaus Peter Jochum, Ana Moreno, Inna M. Sokolova, Maria Valls, Daniel Oesterwind   +10 more
wiley   +1 more source

Migration of Net Phytoplankton and Zooplankton in Mendum’s Pond, New Hampshire [PDF]

, 2006
The study examines the vertical distribution and migratory behavior of net phytoplankton and zooplankton of Mendum’s Pond in Barrington, N.H. The cyanobacteria, Microcystis and Aphanocapsa were the dominant net phytoplankton in this lake.
Murby, Amanda L.
core   +1 more source

Management Implications of Mesopelagic Forage Fisheries for Bigeye Tuna Stocks

Fisheries Management and Ecology, EarlyView.
ABSTRACT Many large marine predators forage on mesopelagic fish stocks, including commercially valuable tunas. The mesopelagic is under increasing interest for commercial exploitation, given its large biomass with potential to supply fishmeal for aquaculture feed or fish oil.
Ciara Willis, Di Jin, Melina Kourantidou, Simon R. Thorrold   +3 more
wiley   +1 more source

Mapping Escolar (Lepidocybium flavobrunneum) in Motion: Oceanographic Forces Shaping Its Habitat in the Southwestern South Atlantic, With Insights From Fishers' Perceptions

Fisheries Oceanography, EarlyView.
ABSTRACT Lepidocybium flavobrunneum [Smith, 1843], commonly known as escolar, is a large pelagic species, important for global and local fisheries, particularly in the southwestern South Atlantic Ocean (SWAO), where it constitutes a significant portion of the catch.
Lucas Rodrigues, Maria Grazia Pennino, Paul Gerhard Kinas, David Conesa, Alba Fuster‐Alonso, Andrés Domingo, Rodrigo Forselledo, Federico Mas, Bruno Mourato, Rodrigo Sant'Ana, Vinni Santos Thykjaer, Raquel Virginia Marquez Marquez, Abner Ventura Alves, Mariano Cabanillas‐Torpoco, Rafael Schroeder, Luis Gustavo Cardoso   +15 more
wiley   +1 more source

The influence of sea ice, wind speed and marine mammals on Southern Ocean ambient sound [PDF]

Royal Society Open Science, 2017
This paper describes the natural variability of ambient sound in the Southern Ocean, an acoustically pristine marine mammal habitat. Over a 3-year period, two autonomous recorders were moored along the Greenwich meridian to collect underwater passive ...
Sebastian Menze, Daniel P. Zitterbart, Ilse van Opzeeland, Olaf Boebel   +3 more
doaj   +1 more source