scholarly journals Hiding and feeding in floating seaweed: Floating seaweed clumps as possible refuges or feeding grounds for fishes

2007 ◽  
Vol 71 (3-4) ◽  
pp. 691-703 ◽  
Author(s):  
Sofie Vandendriessche ◽  
Marlies Messiaen ◽  
Sarah O'Flynn ◽  
Magda Vincx ◽  
Steven Degraer
Keyword(s):  
Floating Seaweed ◽  
Feeding Grounds

Feeding Habits and Feeding Grounds of the Northern Elephant Seal

1984 ◽  
Vol 65 (2) ◽  
pp. 281-290 ◽  
Author(s):  
R. Condit ◽  
B. J. Le Boeuf
Keyword(s):  
Feeding Habits ◽  
Elephant Seal ◽  
Northern Elephant Seal ◽  
Feeding Grounds

Dugong feeding grounds and spatial feeding patterns in subtidal seagrass: A case study at Sibu Archipelago, Malaysia

2021 ◽  
pp. 107670
Author(s):  
Harris Wei Khang Heng ◽  
Jillian Lean Sim Ooi ◽  
Yang Amri Affendi ◽  
Abdul Adzis Kee Alfian ◽  
Louisa Shobhini Ponnampalam
Keyword(s):  
Feeding Patterns ◽  
Feeding Grounds

scholarly journals Movement patterns of humpback whales (Megaptera novaeangliae) reoccupying a Brazilian breeding ground

2018 ◽  
Vol 18 (4) ◽  
Author(s):  
Maria Isabel Carvalho Gonçalves ◽  
Renata Santoro de Sousa-Lima ◽  
Niel Nascimento Teixeira ◽  
Gustavo Henrique Carvalho ◽  
Daniel Danilewicz ◽  
...  
Keyword(s):  
Group Composition ◽  
Movement Patterns ◽  
Study Groups ◽  
Humpback Whales ◽  
Suitable Habitat ◽  
Behavioral State ◽  
Energy Conserving ◽  
Wintering Area ◽  
The Mean ◽  
Feeding Grounds

Abstract: The population of humpback whales from breeding stock A is increasing, and little is known about the routes used by humpbacks that move north of the main calving area of Brazil, the Abrolhos Bank. The aim of this study was to describe the movements of humpback whales in a reoccupation wintering area (Serra Grande, Bahia state, Brazil) based on land-based surveys to test if movement patterns change during the season and between years, due to group composition, behavioral state, and distance to the coast. The mean leg speed of the groups sighted was 6.88 (±2.92) km/h, and leg speed was positively correlated with distance to the coast. There was an increase in leg speed and distance to the coast with increasing number of escorts in the groups with calves. The mean linearity value for group trajectory was 0.81 (±0.19) and the mean reorientation rate was 25.72 (±19.09) º/min. We observed a predominance of trajectories heading south throughout the study. Groups exhibiting more erratic movements early in the season, and groups moving south showed more linear trajectories than groups moving north, indicating the beginning of their migration back to the feeding grounds. Energy conserving strategies and social context affect the movements of humpback whales in Serra Grande, resulting in the observed patterns of the reoccupation of available and suitable habitat north of Abrolhos. Thereby, special attention should be given managing activities with the potential to disturb or displace whales using the region to calve and breed.

Circumpolar frontal systems as potential feeding grounds of Southern Right whales

2019 ◽  
Vol 176 ◽  
pp. 102123 ◽  
Author(s):  
Victoria González Carman ◽  
Alberto Piola ◽  
Todd D. O'Brien ◽  
Dmitriy D. Tormosov ◽  
E. Marcelo Acha
Keyword(s):  
Right Whales ◽  
Southern Right Whales ◽  
Frontal Systems ◽  
Feeding Grounds

scholarly journals Humpback whale song occurs extensively on feeding grounds in the western North Atlantic Ocean

2012 ◽  
Vol 14 (2) ◽  
pp. 175-183 ◽  
Author(s):  
ET Vu ◽  
D Risch ◽  
CW Clark ◽  
S Gaylord ◽  
LT Hatch ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
North Atlantic ◽  
North Atlantic Ocean ◽  
Humpback Whale ◽  
Feeding Grounds

Cryptic vocal behavior of foraging humpback whales on feeding grounds in West Greenland

2021 ◽  
Vol 150 (4) ◽  
pp. 2879-2887
Author(s):  
Simone K. A. Videsen ◽  
Malene Simon ◽  
Mark Johnson ◽  
Peter Teglberg Madsen ◽  
Fredrik Christiansen
Keyword(s):  
Humpback Whales ◽  
Vocal Behavior ◽  
West Greenland ◽  
Feeding Grounds

scholarly journals Opportunistically recorded acoustic data support Northeast Atlantic mackerel expansion theory

2015 ◽  
Vol 73 (4) ◽  
pp. 1115-1126 ◽  
Author(s):  
Jeroen van der Kooij ◽  
Sascha M.M. Fässler ◽  
David Stephens ◽  
Lisa Readdy ◽  
Beth E. Scott ◽  
...  
Keyword(s):  
North Sea ◽  
Stock Assessment ◽  
Detection Algorithm ◽  
Trawl Survey ◽  
Northeast Atlantic ◽  
Acoustic Data ◽  
The North ◽  
The North Sea ◽  
Northern North Sea ◽  
Feeding Grounds

Abstract Fisheries independent monitoring of widely distributed pelagic fish species which conduct large seasonal migrations is logistically complex and expensive. One of the commercially most important examples of such a species in the Northeast Atlantic Ocean is mackerel for which up to recently only an international triennial egg survey contributed to the stock assessment. In this study, we explore whether fisheries acoustic data, recorded opportunistically during the English component of the North Sea International Bottom Trawl Survey, can contribute to an improved understanding of mackerel distribution and provide supplementary data to existing dedicated monitoring surveys. Using a previously published multifrequency acoustic mackerel detection algorithm, we extracted the distribution and abundance of schooling mackerel for the whole of the North Sea during August and September between 2007 and 2013. The spatio-temporal coverage of this unique dataset is of particular interest because it includes part of the unsurveyed summer mackerel feeding grounds in the northern North Sea. Recent increases in landings in Icelandic waters during this season suggested that changes have occurred in the mackerel feeding distribution. Thus far it is poorly understood whether these changes are due to a shift, i.e. mackerel moving away from their traditional feeding grounds in the northern North Sea and southern Norwegian Sea, or whether the species' distribution has expanded. We therefore explored whether acoustically derived biomass of schooling mackerel declined in the northern North Sea during the study period, which would suggest a shift in mackerel distribution rather than an expansion. The results of this study show that in the North Sea, schooling mackerel abundance has increased and that its distribution in this area has not changed over this period. Both of these findings provide, to our knowledge, the first evidence in support of the hypothesis that mackerel have expanded their distribution rather than moved away.

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