Fine‐scale habitat use of foraging sperm whales is driven by seafloor topography and water column structure

2021 ◽  
Author(s):  
Marta Guerra ◽  
Stephen M. Dawson ◽  
Tamlyn R. Somerford ◽  
Elizabeth Slooten ◽  
William J. Rayment
Keyword(s):  
Habitat Use ◽  
Water Column ◽  
Fine Scale ◽  
Sperm Whales ◽  
Seafloor Topography ◽  
Column Structure

Overwinter thermal habitat use in lakes by anadromous Arctic char

2018 ◽  
Vol 75 (12) ◽  
pp. 2343-2353 ◽  
Author(s):  
Ingeborg M. Mulder ◽  
Corey J. Morris ◽  
J. Brian Dempson ◽  
Ian A. Fleming ◽  
Michael Power
Keyword(s):  
Habitat Use ◽  
Water Column ◽  
Prey Capture ◽  
Salvelinus Alpinus ◽  
Late Summer ◽  
Arctic Char ◽  
Foraging Efficiency ◽  
Thermal Habitat ◽  
Metabolic Costs ◽  
Seaward Migration

Anadromous Arctic char (Salvelinus alpinus) migrate back to fresh water in late summer to spawn and (or) overwinter. Upon freshwater entry, feeding is reduced or absent, and movement activity is restricted. While the physiological responses to low temperatures (e.g., growth, metabolism) are understood, specifics of the use of thermal habitat for overwintering remains poorly characterized. This study used acoustic and archival telemetry data from two lakes in southern Labrador, Canada, to study thermal habitat use during the ice-covered period. Results showed that lake-dwelling anadromous Arctic char predominantly occupied a narrow range of temperatures (0.5–2 °C) and used cooler temperatures available within the middle and upper water column. Use of the selected temperatures is likely a strategy that lowers metabolic costs and minimizes energy expenditure, preserving stored lipids for overwinter survival and the energetic costs of preparation for seaward migration. As Arctic char are visual feeders, use of the upper water column is also thought to aid foraging efficiency by increasing the likelihood of prey capture.

scholarly journals Fine-Scale Habitat Use of Reintroduced Black-Footed Ferrets on Prairie Dog Colonies in New Mexico

2012 ◽  
Vol 72 (2) ◽  
pp. 216-227 ◽  
Author(s):  
Jennifer G. Chipault ◽  
Dean E. Biggins ◽  
James K. Detling ◽  
Dustin H. Long ◽  
Robin M. Reich
Keyword(s):  
New Mexico ◽  
Habitat Use ◽  
Fine Scale ◽  
Prairie Dog

scholarly journals Water column structure and statistics of Denmark Strait Overflow Water cyclones

2014 ◽  
Vol 84 ◽  
pp. 110-126 ◽  
Author(s):  
Wilken-Jon von Appen ◽  
Robert S. Pickart ◽  
Kenneth H. Brink ◽  
Thomas W.N. Haine
Keyword(s):  
Water Column ◽  
Column Structure ◽  
Denmark Strait

Fine-scale movement and habitat use of a prairie stream fish assemblage

Oecologia ◽  
2018 ◽  
Vol 186 (3) ◽  
pp. 831-842 ◽  
Author(s):  
Casey A. Pennock ◽  
C. Nathan Cathcart ◽  
Skyler C. Hedden ◽  
Robert E. Weber ◽  
Keith B. Gido
Keyword(s):  
Habitat Use ◽  
Fish Assemblage ◽  
Stream Fish ◽  
Fine Scale ◽  
Prairie Stream

scholarly journals A note on modeling mixing in the upper layers of the Bay of Bengal: Importance of water type, water column structure and precipitation

2019 ◽  
Vol 168 ◽  
pp. 104643
Author(s):  
Lakshmi Kantha ◽  
Robert A. Weller ◽  
J. Thomas Farrar ◽  
Hasibur Rahaman ◽  
Venkata Jampana
Keyword(s):  
Water Column ◽  
Bay Of Bengal ◽  
Water Type ◽  
Column Structure ◽  
Type Water
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