scholarly journals Deep-diving and diel changes in vertical habitat use by Caribbean reef sharks Carcharhinus perezi

2007 ◽  
Vol 344 ◽  
pp. 271-275 ◽  
Author(s):  
DD Chapman ◽  
EK Pikitch ◽  
EA Babcock ◽  
MS Shivji
Keyword(s):  
Habitat Use ◽  
Diel Changes ◽  
Caribbean Reef ◽  
Deep Diving ◽  
Reef Sharks

Population organisation in reef sharks: new variations in coastal habitat use by mobile marine predators

2016 ◽  
Vol 544 ◽  
pp. 197-211 ◽  
Author(s):  
A Chin ◽  
MR Heupel ◽  
CA Simpfendorfer ◽  
AJ Tobin
Keyword(s):  
Habitat Use ◽  
Coastal Habitat ◽  
Marine Predators ◽  
Reef Sharks

scholarly journals Physiological, morphological, and ecological tradeoffs influence vertical habitat use of deep-diving toothed-whales in the Bahamas

PLoS ONE ◽  
2017 ◽  
Vol 12 (10) ◽  
pp. e0185113 ◽  
Author(s):  
Trevor W. Joyce ◽  
John W. Durban ◽  
Diane E. Claridge ◽  
Charlotte A. Dunn ◽  
Holly Fearnbach ◽  
...  
Keyword(s):  
Habitat Use ◽  
The Bahamas ◽  
Deep Diving ◽  
Ecological Tradeoffs

scholarly journals Movements and residency of Caribbean reef sharks at a remote atoll in Belize, Central America

2021 ◽  
Vol 8 (8) ◽  
pp. 201036
Author(s):  
Ivy E. Baremore ◽  
Rachel T. Graham ◽  
George H. Burgess ◽  
Daniel W. Castellanos
Keyword(s):  
Central America ◽  
Kernel Density ◽  
Activity Space ◽  
Use Patterns ◽  
Caribbean Reef ◽  
Blue Hole ◽  
Spatial Use ◽  
Average Activity ◽  
Reef Sharks ◽  
High Degree

We investigated spatial use patterns of 77 Caribbean reef sharks ( Carcharhinus perezi ) at Lighthouse Reef Atoll, Belize over 7 years using residency patterns, kernel density (KD) estimation and network analysis. We found a high degree individual variation in spatial use of the atoll, but there were significant differences in residency and activity space between sexes, with females being overall more resident. Ontogenetic shifts in movement and residency were largely limited to females, as the residency index increased and activity space estimates decreased as females matured, while for males there was no relationship between space use or residency and size. KD analysis revealed many mature females were highly resident to discrete locations, and average activity space of the intermediate-sized sharks was significantly larger than that of the adults, but not the smallest sharks. Markov chain analyses indicated that the southwestern portion of the atoll was the most important movement corridor for all sharks. Both the Blue Hole and Half Moon Caye Natural Monuments provide some protection for larger Caribbean reef sharks; however, a gear ban on longlines on the southwestern forereef between Long Caye and the channel entrance to the Blue Hole would maximize the benefits for all sharks.

scholarly journals Sex-specific variation in the use of vertical habitat by a resident Antarctic top predator

2020 ◽  
Vol 287 (1937) ◽  
pp. 20201447
Author(s):  
Theoni Photopoulou ◽  
Karine Heerah ◽  
Jennifer Pohle ◽  
Lars Boehme
Keyword(s):  
Habitat Use ◽  
Continental Shelf ◽  
Weddell Sea ◽  
Water Masses ◽  
Shelf Water ◽  
Top Predator ◽  
Marine Animals ◽  
Deep Diving ◽  
Continental Shelf Water ◽  
Oceanographic Conditions

Patterns of habitat use are commonly studied in horizontal space, but this does not capture the four-dimensional nature of ocean habitats (space, depth, and time). Deep-diving marine animals encounter varying oceanographic conditions, particularly at the poles, where there is strong seasonal variation in vertical ocean structuring. This dimension of space use is hidden if we only consider horizontal movement. To identify different diving behaviours and usage patterns of vertically distributed habitat, we use hidden Markov models fitted to telemetry data from an air-breathing top predator, the Weddell seal, in the Weddell Sea, Antarctica. We present evidence of overlapping use of high-density, continental shelf water masses by both sexes, as well as important differences in their preferences for oceanographic conditions. Males spend more time in the unique high-salinity shelf water masses found at depth, while females also venture off the continental shelf and visit warmer, shallower water masses. Both sexes exhibit a diurnal pattern in diving behaviour (deep in the day, shallow at night) that persists from austral autumn into winter. The differences in habitat use in this resident, sexually monomorphic Antarctic top predator suggest a different set of needs and constraints operating at the intraspecific level, not driven by body size.

Acoustic Detection, Behavior, and Habitat Use of Deep-Diving Odontocetes

2010 ◽  
Author(s):  
Mark Johnson ◽  
Peter Tyack ◽  
Natacha Aguilar ◽  
Alberto Brito ◽  
Peter Madsen
Keyword(s):  
Habitat Use ◽  
Acoustic Detection ◽  
Deep Diving

Acoustic Detection, Behavior, and Habitat Use of Deep-Diving Odontocetes

2011 ◽  
Author(s):  
Mark Johnson ◽  
Peter Tyack ◽  
Natacha Aguilar ◽  
Alberto Brito ◽  
Peter Madsen
Keyword(s):  
Habitat Use ◽  
Acoustic Detection ◽  
Deep Diving

Fine-scale movement and activity patterns of Caribbean reef sharks (Carcharhinus perezi) in the Bahamas

2017 ◽  
Vol 101 (7) ◽  
pp. 1097-1104 ◽  
Author(s):  
Oliver N. Shipley ◽  
Jacob W. Brownscombe ◽  
Andy J. Danylchuk ◽  
Steven J. Cooke ◽  
Owen R. O’Shea ◽  
...  
Keyword(s):  
Activity Patterns ◽  
Fine Scale ◽  
The Bahamas ◽  
Caribbean Reef ◽  
Reef Sharks
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