Results 51 to 60 of about 3,161,795 (320)

Potential landscape-scale pollinator networks across Great Britain: structure, stability and influence of agricultural land cover [PDF]

, 2018
Understanding spatial variation in the structure and stability of plant-pollinator networks, and their relationship with anthropogenic drivers, is key to maintaining pollination services and mitigating declines.
Asher, August, Ballantyne, Bartomeus, Basilio, Bersier, Bishop, Bohan, Burgos, Burkle, Carstensen, Carvalheiro, Carvell, Chacoff, Chen, Côté, Dormann, Dunne, Dyer, Eilers, Falcão, Falk, Fitter, Fortin, Forup, Fox, Free, Fuller, Garratt, Gill, Gray, Grimm, Hill, Hill, Hortal, Isaac, Jordano, Kaartinen, Kaiser-Bunbury, Kaiser-Bunbury, Keller, Kemp, Kleijn, Kremen, Marrs, Maskell, Memmott, Memmott, Menz, Minckley, Morales-Castilla, Morris, Morris, Morueta-Holme, Olesen, Olesen, Oliver, Ollerton, Pornon, Potts, Potts, Powney, R Core Team, Rader, Rafferty, Ramos-Jiliberto, Redhead, Richardson, Robinson, Smith, Stanley, Stevens, Stubbs, Thierry, Thomas, Thomsen, Thuiller, Thébault, Trøjelsgaard, Tulloch, Tylianakis, Vanbergen, Vanbergen, Vieira, Vinebrooke, Vázquez, Walker, Walker, Waser, Watts, Welti, Winfree, Woodcock, Woodcock, Woodcock   +94 more
core   +3 more sources

Extinction risk and diversification are linked in a plant biodiversity hotspot. [PDF]

PLoS Biology, 2011
It is widely recognized that we are entering an extinction event on a scale approaching the mass extinctions seen in the fossil record. Present-day rates of extinction are estimated to be several orders of magnitude greater than background rates and are ...
T Jonathan Davies, Gideon F Smith, Dirk U Bellstedt, James S Boatwright, Benny Bytebier, Richard M Cowling, Félix Forest, Luke J Harmon, A Muthama Muasya, Brian D Schrire, Yolande Steenkamp, Michelle van der Bank, Vincent Savolainen   +12 more
doaj   +1 more source

Impending extinction crisis of the world’s primates: Why primates matter

Science Advances, 2017
Impending extinction of the world’s primates due to human activities; immediate global attention is needed to reverse the trend. Nonhuman primates, our closest biological relatives, play important roles in the livelihoods, cultures, and religions of many
Alejandro Estrada, P. A. Garber, A. Rylands, Christian Roos, Eduardo Fernandez-Duque, A. D. Fiore, K. Nekaris, V. Nijman, E. Heymann, Joanna E. Lambert, Francesco Rovero, Claudia Barelli, Joanna M. Setchell, Thomas R. Gillespie, R. Mittermeier, Luis D. Verde Arregoitia, Miguel de Guinea, Sidney F. Gouveia, Ricardo Dobrovolski, S. Shanee, Noga Shanee, Sarah A. Boyle, Agustin Fuentes, Katherine C. Mackinnon, K. Amato, Andreas L. S. Meyer, Serge A. Wich, Serge A. Wich, Robert W. Sussman, Ruliang Pan, I. Koné, Baoguo Li   +31 more
semanticscholar   +1 more source

Ecological response to collapse of the biological pump following the mass extinction at the Cretaceous–Paleogene boundary

, 2016
. It is commonly accepted that the mass extinction associated with the Cretaceous–Paleogene (K–Pg) boundary (∼ 66 Ma) is related to the environmental effects of a large extraterrestrial impact.
J. Vellekoop, Lineke Woelders, S. Açikalin, J. Smit, B. Schootbrugge, İ. Yılmaz, H. Brinkhuis, R. Speijer   +7 more
semanticscholar   +1 more source

Correlates of extinction risk in Chinese endemic birds

Avian Research, 2019
Background China has a relative high degree of endemism of birds due to its large area, diversified topography, and varied climates and habitats. Among the 77 Chinese endemic birds, 29 species are classified as threatened according to the officially ...
Chuanwu Chen, Di Zeng, Yuhao Zhao, Yiru Wu, Junfeng Xu, Yanping Wang   +5 more
doaj   +1 more source

Climate Modelling of Mass-Extinction Events: A Review [PDF]

Int.J.Astrobiology 8 (2009) 207-212, 2009
Despite tremendous interest in the topic and decades of research, the origins of the major losses of biodiversity in the history of life on Earth remain elusive. A variety of possible causes for these mass-extinction events have been investigated, including impacts of asteroids or comets, large-scale volcanic eruptions, effects from changes in the ...
arxiv   +1 more source

Global analysis of a new nonlinear stochastic differential competition system with impulsive effect

Advances in Difference Equations, 2017
We propose a new stochastic competition chemostat system with saturated growth rate and impulsive toxicant input. The main purpose of this paper is to study the stochastic dynamics of a high-dimensional impulsive stochastic chemostat model and find the ...
Xuejin Lv, Lu Wang, Xinzhu Meng
doaj   +1 more source

Fluctuations in models of biological macroevolution

, 2005
Fluctuations in diversity and extinction sizes are discussed and compared for two different, individual-based models of biological coevolution. Both models display power-law distributions for various quantities of evolutionary interest, such as the ...
Rikvold, Per Arne
core   +1 more source

The extinction probability in systems randomly varying in time

Nuclear Engineering and Technology, 2017
The extinction probability of a branching process (a neutron chain in a multiplying medium) is calculated for a system randomly varying in time. The evolution of the first two moments of such a process was calculated previously by the authors in a system
Imre Pázsit, M.M.R. Williams, Lénárd Pál   +2 more
doaj   +1 more source

Retroactive interference: Counterconditioning and extinction with and without biologically significant outcomes.

Journal of Experimental Psychology: Animal Learning and Cognition, 2020
Following cue-outcome (X-O) pairings, 2 procedures that reduce conditioned responses to X are extinction, in which X is presented by itself, and counterconditioning, in which X is paired with a different outcome typically of valence opposite that of training.
Jérémie Jozefowiez, Alaina S. Berruti, Yaroslav Moshchenko, Tori Peña, Cody W. Polack, Ralph R. Miller   +5 more
openaire   +4 more sources