Results 41 to 50 of about 26,309 (230)

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

Megafauna extinctions produce idiosyncratic Anthropocene assemblages

Science Advances, 2022
The “trophic downgrading of planet Earth” refers to the systematic decline of the world’s largest vertebrates. However, our understanding of why megafauna extinction risk varies through time and the importance of site- or species-specific factors remain unclear.
Zachary Amir, Jonathan H. Moore, Pablo Jose Negret, Matthew Scott Luskin   +3 more
openaire   +4 more sources

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

Our shifting perspectives on the oceans [PDF]

, 2003
In the last 15 years new research findings have radically reshaped our understanding of human effects on ocean ecosystems. Here I describe five major shifts in perspective that reveal our impacts to be more severe and persistent than previously ...
Roberts, C.M.
core   +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

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

Megafauna Identification Training Images

, 2021
This is the data repository for the journal paper Protecting endangered megafauna through AI analysis of drone images in a low-connectivity setting: A case study from Namibia.
Hua, Alice, Martin, Kevin, Jewell, Zoe C, Shen, Eugene, Chen, Nicole, Mou, Catherine, Sterk, Maximilian, Reinhard, Berend, Reinhard, Friedrich, Lee, Stephen, Alibhai, Sky   +10 more
openaire   +1 more source

Description of the skull, braincase, and dentition of Moschognathus whaitsi (Dinocephalia, Tapinocephalia), and its palaeobiological and behavioral implications

The Anatomical Record, EarlyView.
Abstract A subadult Moschognathus whaitsi from the Eastern Cape Province, South Africa, was scanned using synchrotron radiation X‐ray computed tomography (SRXCT). Its subadult state allowed the cranial bones and teeth to be identified and individually reconstructed in 3D.
Tristen Lafferty, Luke A. Norton, Aliénor Duhamel, Julien Benoit   +3 more
wiley   +1 more source

Radiocarbon Chronologies and Extinction Dynamics of the Late Quaternary Mammalian Megafauna of the Taimyr Peninsula, Russian Federation [PDF]

, 2002
This paper presents 75 new radiocarbon dates based on late Quaternary mammal remains recovered from eastern Taimyr Peninsula and adjacent parts of the northern Siberian lowlands, Russian Federation, including specimens of woolly mammoth (Mammuthus ...
Agenbroad, L, Flemming, C, Greenwood, AD, Greenwood, Alex D., MacPhee, RDE, MacPhee, Ross D.E., Maliave, CD, Marliave, Christian de, Mol, D, Tikhonov, Alexei N., Tikhonov, AN, Van der Plicht, H   +11 more
core   +2 more sources

Origin, evolution and biogeographic dynamics of the European rabbit (Oryctolagus cuniculus) in Southwestern Europe

The Anatomical Record, EarlyView.
Abstract The Pleistocene is a key period for understanding the evolutionary history and palaeobiogeography of the European rabbit (Oryctolagus cuniculus). The species was first documented in southeastern Iberia at the beginning of the Middle Pleistocene and appears to have rapidly spread throughout Southwestern Europe, where it was found in numerous ...
Maxime Pelletier
wiley   +1 more source