Results 81 to 90 of about 124,197 (248)

Homo luzonensis and the role of homoplasy in the morphology of hominin insular species

Cladistics, EarlyView.
Abstract Homo luzonensis lived during the upper Pleistocene in the northern Philippines, east of the Wallace line. The few specimens attributed to this species show a mosaic of plesiomorphies for the genus Homo and apomorphies found in upper Pleistocene Homo species.
Pierre Gousset, Jérémie Bardin, Isabelle Rouget, Armand S. Mijares, Florent Détroit   +4 more
wiley   +1 more source

Speed matters - seismicity and spreading processes of ultraslow spreading mid-ocean ridges [PDF]

, 2018
The creation of new ocean lithosphere at mid-ocean ridges is accompanied by characteristic earthquake activity. The analysis of mid-ocean ridge seismicity proved a powerful tool to study submarine accretion of lithosphere and the structure of mid-ocean ...
Schlindwein, Vera
core  

The age and origin of the central Scotia Sea [PDF]

, 2010
Opening of the Drake Passage gateway between the Pacific and Atlantic oceans has been linked in various ways to Cenozoic climate changes. From the oceanic floor of Drake Passage, the largest of the remaining uncertainties in understanding this opening is
Eagles, Graeme
core   +1 more source

Assessment of ecosystem status in Mozambique and implications for environmental planning

Conservation Science and Practice, EarlyView.
We assess Mozambique's terrestrial ecosystems using the IUCN Red List of Ecosystems framework, showing that more than half of Mozambique's ecosystems are threatened, with impacts primarily concentrated in temperate subhumid grasslands and pyric tussock savannas.
Kendall R. Jones, Mervyn Lötter, Hugo M. Costa, Gautam Surya, Vanessa Rathbone, Hermenegildo Matimele, Eleutério Duarte, Tereza Alves, Célia Macamo, Denise Nicolau, Muri G. Soares, Roberto Zolho, Hedley S. Grantham   +12 more
wiley   +1 more source

Magmatic activity at the slowest spreading rates: insights from a high-resolution earthquake catalog obtained from Gakkel Ridge Deep (Arctic Ocean)

Seismica
At the eastern end of Gakkel Ridge, Arctic Ocean, spreading rates drop below 5 mm/y near the termination of the active mid-ocean ridge in the Laptev Sea.
David Essing, Annika Hellbrück, Vera Schlindwein   +2 more
doaj   +1 more source

The Abrupt and Persistent Decline in Recruitment Success in Northeast Arctic Cod: A Review of Probable Causes

Fish and Fisheries, EarlyView.
ABSTRACT Most of the previously large cod stocks in the North Atlantic are depleted to very low levels. A notable exception has been the Northeast Arctic cod inhabiting the Barents Sea. This cod stock reached a record high level around 2013, but since then has declined sharply, with older fish being fished out and few new recruits entering the stock ...
Edda Johannesen, Geir Ottersen, Florian Berg, Bjarte Bogstad, Padmini Dalpadado, Côme Denechaud, Elena Eriksen, Maria Fossheim, Håvard Guldbrandsen Frøysa, Torild Johansen, Knut Korsbrekke, Even Moland, Esben Moland Olsen, Anne Britt Sandø, Georg Skaret, Morten Skogen, Frode Vikebø   +16 more
wiley   +1 more source

A joint geochemical–geophysical record of time-dependent mantle convection south of Iceland [PDF]

, 2014
The North Atlantic V-Shaped Ridges (VSRs) provide a spatially extensive and clear record of unsteady mantle convective circulation over >40 My>40 My.
S.M. Jones, B.J. Murton, J.G. Fitton, N.J. White, J. Maclennan, R.L. Walters, Albers, Barton, Benediktsdóttir, Bourdon, Bown, Bown, Bunch, Cohen, Crosby, Devey, Fitton, Fitton, Foulger, Foulger, Gaherty, Gibson, Harðarson, Hey, Ito, Jones, Jones, Jones, Katz, Kojitani, Kokfelt, Kokfelt, Koornneef, Louden, Maclennan, Maclennan, Maclennan, McKenzie, Murton, Navin, Peate, Pickett, Pilidou, Poore, Poore, Poore, Ribe, Ribe, Rickers, Robinson, Rudge, Samworth, Schilling, Schilling, Schubert, Shorttle, Sims, Sims, Slater, Sleep, Sleep, Smallwood, Stracke, Stracke, Taylor, Tilmann, Vogt, Walters, Watson, Weir, White, White, White, White, Whitmarsh, Wright   +75 more
core   +5 more sources

Compound‐Specific Stable Isotope Analysis Reveals Population‐Specific Differences in Chinook Salmon Trophic Level and Basal Resource Use in the Northeast Pacific

Fisheries Oceanography, EarlyView.
ABSTRACT Chinook salmon exhibit far‐flung and disparate population‐specific marine migrations that have made it difficult to assess their trophic ecology. In this study, we collected returning and resident subadult Fraser River Chinook salmon in 2018 and 2019 from population groups with different known run‐timings (spring, summer, and fall) and marine ...
Jacob E. Lerner, Brian P. V. Hunt
wiley   +1 more source

Ocean rises are products of variable mantle composition, temperature and focused melting [PDF]

, 2014
Author Posting. © The Author(s), 2014. This is the author's version of the work. It is posted here by permission of Nature Publishing Group for personal use, not for redistribution. The definitive version was published in Nature Geoscience 8 (2015): 68-
Dick, Henry J. B., Zhou, Huaiyang
core   +1 more source

A Common Reference Material for Mass‐Dependent Sn Isotope Compositions: An Inter‐Laboratory Calibration Approach

Geostandards and Geoanalytical Research, EarlyView.
Key Points We recommend using the notation δ122/118SnNIST SRM 3161a for mass‐dependent Sn isotope data. We derived conversion factors relative to NIST SRM 3161a for Puri Sn CEZA (0.132 ± 0.011‰), Sn Lyon (0.229 ± 0.016‰), Sn IPGP (0.162 ± 0.018‰). Tin isotope compositions are presented for SPEX CertiPrep Sn and nine USGS reference materials.
Aurélia C.E. Meister, Manuela A. Fehr, Quentin Amet, Gerhard Brügmann, Caroline Fitoussi, Matthias Friebel, Weiqiang Li, Frederic Moynier, Jia‐Xin She, Xueying Wang, Maria Schönbächler   +10 more
wiley   +1 more source