Results 41 to 50 of about 85,724 (312)

Ecosystems mediate climate impacts on northern hemisphere seabirds [PDF]

Ecosystem structure and biophysical processes mediate biological responses to climate changes, but few studies have examined impacts of this dynamic among upper trophic levels.
Harris, M., Koval, G., Major, H.L., Plissner, J., Flint, E., Watanuki, Y., Ceballos, E., Mazurkiewicz, D., Kristiansen, T., Jahncke, J., Dehnhard, N., Trowbridge, J., Velarde, E., Killeen, H., Strøm, H., Newell, M., Lorentsen, S.-H., Suryan, R.M., Thayer, J., Anker-Nilssen, T., Lyons, D., Becker, P., Golubova, E., Hedd, A., Parker, M., Barrett, R., Daunt, F., García-Reyes, M., Thompson, S.A., Fayet, A.L., Berglund, P.-A., Kitaysky, A., Heal, M., Hentati-Sundberg, J., Hoover, B., Rock, J.C., Young, L., Whelan, S., Hansen, E.S., Birkhead, T., Miles, W., Boulinier, T., Reiertsen, T.K., Wanless, S., Warzybok, P., Erikstad, K.E., Sydeman, W.J., Bouwhuis, S., Hatch, S., Oro, D., Rail, J.-F., Renner, H., Elliott, K., Orben, R.A., Furness, R.W., Diamond, A.   +55 more
core   +1 more source

Copepods in the Northern Hemisphere [PDF]

Nature, 1925
IT has long been recognised that the distribution of freshwater copepods has been profoundly influenced by the incidence of the glacial period, since the lake-districts which they inhabit are to a large extent postglacial catchment basins. It so happens that there is a general correspondence between the three leading sub-orders and the three principal ...
openaire   +1 more source

European climate response to tropical volcanic eruptions over the last half millennium [PDF]

, 2007
We analyse the winter and summer climatic signal following 15 major tropical volcanic eruptions over the last half millennium based on multi-proxy reconstructions for Europe. During the first and second post-eruption years we find significant continental
Tett, S. F. B., Wanner, H., Luterbacher, J., Fischer, E. M., Zorita, E., Casty, C.   +5 more
core   +1 more source

Field‐Frustrated Cooperative Distortions: Suppressing Jahn‐Teller Ordering via Microwave Annealing

Advanced Science, EarlyView.
Microwave annealing decouples local Jahn‐Teller distortions from long‐range cooperative ordering in CuFe2O4, stabilizing a metastable cubic phase that remains locally distorted yet globally symmetry‐frustrated. Synchrotron XRD, PDF, XPS, and in situ thermal cycling reveal how non‐equilibrium MW‐phonon interactions suppress cooperative orbital‐lattice ...
Daryoosh Vashaee, Kelvin Dsouza
wiley   +1 more source

Detection of volcanic, solar and greenhouse gas signals in paleo-reconstructions of Northern Hemispheric temperature [PDF]

, 2003
We apply a multiple regression method to estimate the response to anthropogenic and natural climate forcings simultaneously from a number of paleo-reconstructions of Northern Hemispheric average temperature. These long records (600 to 1000 years) provide
Kim, K. Y., Baum, S. K., Hegerl, G. C., Hyde, W. T., Crowley, T. J.   +4 more
core   +1 more source

Taxonomic reassessment of fossil Sequoia and Protosequoia from the Upper Miocene of Central Honshu, Japan, with implications for leaf morphological variation in extant S. sempervirens

American Journal of Botany, EarlyView.
Abstract Premise Since its emergence in the Mesozoic, Sequoia (Cupressaceae) has been considered to possess conserved leaf morphology. However, recent studies have shown that the leaves of extant S. sempervirens become smaller, with a scale form, with increasing tree height.
Shun Ikeda, Arata Momohara
wiley   +1 more source

Sensitivity of the ITCZ Location to Ocean Forcing Via Q‐Flux Green's Function Experiments

Geophysical Research Letters, 2018
The sensitivity of the intertropical convergence zone (ITCZ) position to forcing patterns is important for understanding changes in tropical rainfall.
Bryce E. Harrop, Jian Lu, Fukai Liu, Oluwayemi A. Garuba, L. Ruby Leung   +4 more
doaj   +1 more source

The oldest mysticete in the Northern Hemisphere

Current Biology
Extant baleen whales (Mysticeti) uniquely use keratinous baleen for filter-feeding and lack dentition, but the fossil record clearly shows that "toothed" baleen whales first appeared in the Late Eocene.1 Globally, only two Eocene mysticetes have been found, and both are from the Southern Hemisphere: Mystacodon selenensis from Peru, 36.4 mega-annum (Ma)
Cheng-Hsiu Tsai, James L. Goedert, Robert W. Boessenecker   +2 more
openaire   +2 more sources

Bayesian evaluation of the southern hemisphere radiocarbon offset during the holocene

, 2009
While an interhemispheric offset in atmospheric radiocarbon levels from AD 1950–950 is now well established, its existence earlier in the Holocene is less clear, with some studies reporting globally uniform 14C levels while others finding Southern ...
Turney, Chris S.M., Palmer, Jonathan G., Ramsey, Christopher Bronk, Turney, Chris, Hogg, Alan, Hogg, Alan G., Palmer, Jonathan, Bronk Ramsey, Christopher, Turney, Chris; id_orcid   +8 more
core   +1 more source

Speech Biomarkers for Quantifying Effects of Subthalamic Deep Brain Stimulation in Parkinson's Disease

Annals of Neurology, EarlyView.
Objective Dysarthria is one of the most common and disabling side effects of subthalamic nucleus deep brain stimulation (STN‐DBS) in Parkinson's disease (PD). Stimulation often exacerbates speech dysfunction beyond the effects of PD progression, likely because of current spread to structures surrounding the STN.
Petr Krýže, Mário Sousa, Vojtěch Illner, Adriana Jorge, Matilde Castelli, Ines Debove, Andreia D. Magalhães, Julia Waskönig, Lenard Lachenmayer, Joan Philipp Michelis, Gerd Tinkhauser, Deborah Amstutz, Marie Elise Maradan‐Gachet, Katrin Petermann, Claudio Pollo, Tobias Nef, Paul Krack, Jan Rusz   +17 more
wiley   +1 more source