scholarly journals Effect of oceanographic features on fine-scale foraging movements of bottlenose dolphins

2010 ◽  
Vol 418 ◽  
pp. 223-233 ◽  
Author(s):  
H Bailey ◽  
P Thompson
Keyword(s):  
Bottlenose Dolphins ◽  
Fine Scale ◽  
Foraging Movements

scholarly journals Fine-scale behaviour of bottlenose dolphins around gillnets

2003 ◽  
Vol 270 (suppl_1) ◽  
Author(s):  
Andrew J. Read ◽  
Danielle M. Waples ◽  
Kim W. Urian ◽  
Dave Swanner
Keyword(s):  
Bottlenose Dolphins ◽  
Fine Scale

Fine-scale population genetic structuring of bottlenose dolphins in Irish coastal waters

2011 ◽  
Vol 14 (4) ◽  
pp. 342-353 ◽  
Author(s):  
L. Mirimin ◽  
R. Miller ◽  
E. Dillane ◽  
S. D. Berrow ◽  
S. Ingram ◽  
...  
Keyword(s):  
Coastal Waters ◽  
Population Genetic ◽  
Bottlenose Dolphins ◽  
Fine Scale ◽  
Genetic Structuring ◽  
Scale Population

Fine-Scale Spatial Variation of Persistent Organic Pollutants in Bottlenose Dolphins (Tursiops truncatus) in Biscayne Bay, Florida

2007 ◽  
Vol 41 (21) ◽  
pp. 7222-7228 ◽  
Author(s):  
Jenny A. Litz ◽  
Lance P. Garrison ◽  
Lynne A. Fieber ◽  
Anthony Martinez ◽  
Joseph P. Contillo ◽  
...  
Keyword(s):  
Spatial Variation ◽  
Organic Pollutants ◽  
Persistent Organic Pollutants ◽  
Tursiops Truncatus ◽  
Bottlenose Dolphins ◽  
Biscayne Bay ◽  
Fine Scale

Fine-scale habitat selection by coastal bottlenose dolphins: application of a new land-based video-montage technique

2003 ◽  
Vol 81 (3) ◽  
pp. 469-478 ◽  
Author(s):  
Gordon D Hastie ◽  
Ben Wilson ◽  
Paul M Thompson
Keyword(s):  
Spatial Scales ◽  
Bottlenose Dolphins ◽  
Distribution Patterns ◽  
Fine Scale ◽  
Narrow Channels ◽  
Diurnal Cycles ◽  
Patterns Of Use ◽  
Seasonal Migrations ◽  
Intensive Use ◽  
Moray Firth

Cetacean distribution and underwater topography are frequently correlated. These patterns are commonly studied on large spatial scales, over tens of kilometres, but very rarely on a fine scale. Sightings of bottlenose dolphins, Tursiops truncatus, within the Moray Firth, Scotland, were previously found to be concentrated within deep, narrow channels. To understand why such areas were selected, more-detailed information on the distribution of dolphins was required. This study describes the development of a video technique to study the spatial distribution and relative abundance of bottlenose dolphins. We then used the methodology to investigate whether water depth and seabed gradient influence the dolphins' distribution patterns. Furthermore, temporal patterns of use were examined with respect to seasonal, tidal, and diurnal cycles. The distribution of dolphins was significantly related to topography: dolphins were sighted most frequently in the deepest regions with the steepest seabed gradients. There was a clear temporal pattern in the use of the area, with sightings peaking during July. However, the presence of dolphins was not significantly related to tidal or diurnal cycles. The topography of the area appears to be a significant influence on its intensive use by dolphins, and patterns of use indicate that topography may facilitate foraging during seasonal migrations of fish.

Fine-scale analysis of synchronous breathing in wild Indo-Pacific bottlenose dolphins (Tursiops aduncus)

2010 ◽  
Vol 83 (1) ◽  
pp. 48-53 ◽  
Author(s):  
Mai Sakai ◽  
Tadamichi Morisaka ◽  
Kazunobu Kogi ◽  
Toru Hishii ◽  
Shiro Kohshima
Keyword(s):  
Bottlenose Dolphins ◽  
Fine Scale ◽  
Scale Analysis ◽  
Tursiops Aduncus

Fine-scale genetic structure of bottlenose dolphins, Tursiops truncatus, in Atlantic coastal waters of the Iberian Peninsula

Hydrobiologia ◽  
2011 ◽  
Vol 670 (1) ◽  
pp. 111-125 ◽  
Author(s):  
Ruth Fernández ◽  
M. Begoña Santos ◽  
Graham J. Pierce ◽  
Ángela Llavona ◽  
Alfredo López ◽  
...  
Keyword(s):  
Genetic Structure ◽  
Iberian Peninsula ◽  
Coastal Waters ◽  
Tursiops Truncatus ◽  
Bottlenose Dolphins ◽  
Fine Scale ◽  
Atlantic Coastal

Fine-scale population structure of bottlenose dolphins (Tursiops truncatus) in Tampa Bay, Florida

2009 ◽  
Vol 25 (3) ◽  
pp. 619-638 ◽  
Author(s):  
Kim W. Urian ◽  
Sue Hofmann ◽  
Randall S. Wells ◽  
Andrew J. Read
Keyword(s):  
Population Structure ◽  
Tursiops Truncatus ◽  
Bottlenose Dolphins ◽  
Tampa Bay ◽  
Fine Scale ◽  
Scale Population

scholarly journals Predicting defaunation: accurately mapping bushmeat hunting pressure over large areas

2020 ◽  
Vol 287 (1922) ◽  
pp. 20192677
Author(s):  
Mairin C. M. Deith ◽  
Jedediah F. Brodie
Keyword(s):  
Real World ◽  
Landscape Heterogeneity ◽  
Strongly Correlated ◽  
Fine Scale ◽  
Habitat Features ◽  
Wild Meat ◽  
Large Animals ◽  
Human Foraging ◽  
Foraging Movements ◽  
Malaysian Borneo

Unsustainable hunting is emptying forests of large animals around the world, but current understanding of how human foraging spreads across landscapes has been stymied by data deficiencies and cryptic hunter behaviour. Unlike other global threats to biodiversity like deforestation, climate change and overfishing, maps of wild meat hunters' movements—often based on forest accessibility—typically cover small scales and are rarely validated with real-world observations. Using camera trapping data from rainforests across Malaysian Borneo, we show that while hunter movements are strongly correlated with the accessibility of different parts of the landscape, accessibility measures are most informative when they integrate fine-scale habitat features like topography and land cover. Measures of accessibility naive to fine-scale habitat complexity, like distance to the nearest road or settlement, generate poor approximations of hunters’ movements. In comparison, accessibility as measured by high-resolution movement models based on circuit theory provides vastly better reflections of real-world foraging movements. Our results highlight that simple models incorporating fine-scale landscape heterogeneity can be powerful tools for understanding and predicting widespread threats to biodiversity.

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