Results 31 to 40 of about 8,341 (239)

Habitat Use, Residency, and Connectivity of Bull Sharks (Carcharhinus leucas) in the Bazaruto Seascape, Mozambique

Fishes
Bull sharks (Carcharhinus leucas) are highly mobile coastal predators, whose broad movements complicate conservation planning, particularly in the Western Indian Ocean, where key habitats remain poorly understood.
Stephanie K. Venables, Lukas Müller, Christoph A. Rohner, Andrea D. Marshall, Jimmy van Rijn, Nilza de Catarina, John D. Filmalter, Ryan Daly   +7 more
doaj   +1 more source

The functional extinction of Andean megafauna [PDF]

Ecology, 2016
AbstractControversy exists over the cause and timing of the extinction of the Pleistocene megafauna. In the tropical Andes, deglaciation and associated rapid climate change began ~8,000 years before human arrival, providing an opportunity to separate the effects of climate change from human hunting on megafaunal extinction. We present a paleoecological
Angela, Rozas-Davila, Bryan G, Valencia, Mark B, Bush   +2 more
openaire   +2 more sources

Drone-Based Assessment of Marine Megafauna off Wave-Exposed Sandy Beaches

Remote Sensing, 2023
The wave-impacted waters off exposed sandy beaches support marine megafauna, including dolphins, whales, sharks, rays and turtles. To characterise variation in megafaunal assemblages in this challenging habitat, we used drone-based remote sensing to ...
Brendan P. Kelaher, Kim I. Monteforte, Stephen G. Morris, Thomas A. Schlacher, Duane T. March, James P. Tucker, Paul A. Butcher   +6 more
doaj   +1 more source

Using Drone Footage to Analyze the Effect of Diver Presence on Juvenile Manta Ray Behavior

Drones
Manta ray tourism has become a multi-million-dollar industry proposed as a conservation tool in recent decades; however, its impacts remain unclear. We use drones and Markov models to quantify the effects of diver presence on a juvenile population of the
Miguel de Jesús Gómez-García, Amanda L. O’Brien, Jessica H. Pate   +2 more
doaj   +1 more source

Are we eating the world's megafauna to extinction?

Conservation Letters, 2019
Many of the world's vertebrates have experienced large population and geographic range declines due to anthropogenic threats that put them at risk of extinction. The largest vertebrates, defined as megafauna, are especially vulnerable.
William J. Ripple, Christopher Wolf, Thomas M. Newsome, Matthew G. Betts, Gerardo Ceballos, Franck Courchamp, Matt W. Hayward, Blaire VanValkenburgh, Arian D. Wallach, Boris Worm   +9 more
doaj   +1 more source

Contrasting Habitat Use and Population Dynamics of Reef Manta Rays Within the Nusa Penida Marine Protected Area, Indonesia

Frontiers in Marine Science, 2019
Manta rays (Mobula spp.) are highly valued in nature-based tourism globally. In Indonesia, although manta rays are protected, critical information is lacking on their habitat use, population dynamics and movements. We investigate the population structure
Elitza S. Germanov, Elitza S. Germanov, Elitza S. Germanov, Lars Bejder, Lars Bejder, Delphine B. H. Chabanne, Delphine B. H. Chabanne, Dharmadi Dharmadi, I. Gede Hendrawan, Andrea D. Marshall, Simon J. Pierce, Mike van Keulen, Mike van Keulen, Neil R. Loneragan, Neil R. Loneragan, Neil R. Loneragan   +15 more
doaj   +1 more source

Trophic and feeding ecology of whale sharks (Rhincodon typus) using bulk stable isotope analysis

Frontiers in Fish Science
IntroductionDespite their size, relatively passive behavior, and commercial significance, knowledge of the behavioral ecology of whale sharks remains limited.
Clare E. M. Prebble, Lydie I. E. Couturier, Christoph A. Rohner, Simon J. Pierce, Clive N. Trueman   +4 more
doaj   +1 more source

Lake levels and trackways: An alternative model to explain the timing of human-megafauna trackway intersections, Tularosa Basin, New Mexico

Quaternary Science Advances, 2021
The margins of Paleolake Otero in southern New Mexico, USA, contain one of the largest concentrations of fossilized late Pleistocene (Rancholabrean) megafauna trackways in North America.
David M. Rachal, Kate Zeigler, Robert Dello-Russo, Christian Solfisburg   +3 more
doaj   +1 more source

Functional models from limited data: A parametric and multimodal approach to anatomy and 3D kinematics of feeding in basking sharks (Cetorhinus maximus)

The Anatomical Record, EarlyView.
Abstract Basking sharks, Cetorhinus maximus (Gunnerus, Brugden [Squalus maximus], Det Kongelige Norske Videnskabers Selskabs Skrifter, 1765, vol. 3, pp. 33–49), feed by gaping their mouths and gill slits, greatly reorienting their cranial skeletons to filter food from water.
Tairan Li, Mike Schindler, Martha Paskin, Venkata A. Surapaneni, Elliott Scott, Sabine Hauert, Nicholas Payne, David E. Cade, Jeremy A. Goldbogen, Frederik H. Mollen, Daniel Baum, Sean Hanna, Mason N. Dean   +12 more
wiley   +1 more source

ROV’s Video Recordings as a Tool to Estimate Variation in Megabenthic Epifauna Diversity and Community Composition in the Guaymas Basin

Frontiers in Marine Science, 2020
Patterns in benthic megafauna diversity in littoral and intertidal zones in the Gulf of California have been associated with both habitat heterogeneity and substrate type.
Pedro H. López-Garrido, Pedro H. López-Garrido, James P. Barry, Juan Ignacio González-Gordillo, Elva Escobar-Briones   +4 more
doaj   +1 more source