GSTDTAP

浏览/检索结果: 共101条,第1-10条 帮助

限定条件                            
已选(0)清除 条数/页:   排序方式:
Long-term cyclic persistence in an experimental predator-prey system 期刊论文
NATURE, 2020, 577 (7789) : 226-+
作者:  Blasius, Bernd;  Rudolf, Lars;  Weithoff, Guntram;  Gaedke, Ursula;  Fussmann, Gregor F.
收藏  |  浏览/下载:8/0  |  提交时间:2020/04/16

Predator-prey cycles rank among the most fundamental concepts in ecology, are predicted by the simplest ecological models and enable, theoretically, the indefinite persistence of predator and prey(1-4). However, it remains an open question for how long cyclic dynamics can be self-sustained in real communities. Field observations have been restricted to a few cycle periods(5-8) and experimental studies indicate that oscillations may be short-lived without external stabilizing factors(9-19). Here we performed microcosm experiments with a planktonic predator-prey system and repeatedly observed oscillatory time series of unprecedented length that persisted for up to around 50 cycles or approximately 300 predator generations. The dominant type of dynamics was characterized by regular, coherent oscillations with a nearly constant predator-prey phase difference. Despite constant experimental conditions, we also observed shorter episodes of irregular, non-coherent oscillations without any significant phase relationship. However, the predator-prey system showed a strong tendency to return to the dominant dynamical regime with a defined phase relationship. A mathematical model suggests that stochasticity is probably responsible for the reversible shift from coherent to non-coherent oscillations, a notion that was supported by experiments with external forcing by pulsed nutrient supply. Our findings empirically demonstrate the potential for infinite persistence of predator and prey populations in a cyclic dynamic regime that shows resilience in the presence of stochastic events.


  
Release of oxidizing fluids in subduction zones recorded by iron isotope zonation in garnet 期刊论文
NATURE GEOSCIENCE, 2019, 12 (12) : 1029-+
作者:  Gerrits, Anna R.;  Inglis, Edward C.;  Dragovic, Besim;  Starr, Paul G.;  Baxter, Ethan F.;  Burton, Kevin W.
收藏  |  浏览/下载:7/0  |  提交时间:2020/02/16
An interval of high salinity in ancient Gale crater lake on Mars 期刊论文
NATURE GEOSCIENCE, 2019, 12 (11) : 889-+
作者:  Rapin, W.;  Ehlmann, B. L.;  Dromart, G.;  Schieber, J.;  Thomas, N. H.;  Fischer, W. W.;  Fox, V. K.;  Stein, N. T.;  Nachon, M.;  Clark, B. C.;  Kah, L. C.;  Thompson, L.;  Meyer, H. A.;  Gabriel, T. S. J.;  Hardgrove, C.;  Mangold, N.;  Rivera-Hernandez, F.;  Wiens, R. C.;  Vasavada, A. R.
收藏  |  浏览/下载:8/0  |  提交时间:2020/02/16
TERRESTRIAL BIOGEOCHEMISTRY Peatlands as prolific carbon sinks 期刊论文
NATURE GEOSCIENCE, 2019, 12 (11) : 880-881
作者:  Amesbury, Matthew J.;  Gallego-Sala, Angela;  Loisel, Julie
收藏  |  浏览/下载:7/0  |  提交时间:2020/02/16
Vulnerability of the industrialized microbiota 期刊论文
SCIENCE, 2019, 366 (6464) : 444-+
作者:  Sonnenburg, Justin L.;  Sonnenburg, Erica D.
收藏  |  浏览/下载:6/0  |  提交时间:2019/11/27
Multivalent anions as universal latent electron donors 期刊论文
NATURE, 2019, 573 (7775) : 519-+
作者:  Tang, Cindy G.;  Syafiqah, Mazlan Nur;  Koh, Qi-Mian;  Zhao, Chao;  Zaini, Jamal;  Seah, Qiu-Jing;  Cass, Michael J.;  Humphries, Martin J.;  Grizzi, Ilaria;  Burroughes, Jeremy H.;  Png, Rui-Qi;  Chua, Lay-Lay;  Ho, Peter K. H.
收藏  |  浏览/下载:13/0  |  提交时间:2019/11/27
Comment on "The global tree restoration potential" 期刊论文
SCIENCE, 2019, 366 (6463)
作者:  Grainger, Alan;  Iverson, Louis R.;  Marland, Gregg H.;  Prasad, Anantha
收藏  |  浏览/下载:5/0  |  提交时间:2019/11/27
Genetic regulatory variation in populations informs transcriptome analysis in rare disease 期刊论文
SCIENCE, 2019, 366 (6463) : 351-+
作者:  Mohammadi, Pejman;  Castel, Stephane E.;  Cummings, Beryl B.;  Einson, Jonah;  Sousa, Christina;  Hoffman, Paul;  Donkervoort, Sandra;  Jiang, Zhuoxun;  Mohassel, Payam;  Foley, A. Reghan;  Wheeler, Heather E.;  Im, Hae Kyung;  Bonnemann, Carsten G.;  MacArthur, Daniel G.;  Lappalainen, Tuuli
收藏  |  浏览/下载:7/0  |  提交时间:2019/11/27
Hierarchical interlocked orthogonal faulting in the 2019 Ridgecrest earthquake sequence 期刊论文
SCIENCE, 2019, 366 (6463) : 346-+
作者:  Ross, Zachary E.;  Idini, Benjamin;  Jia, Zhe;  Stephenson, Oliver L.;  Zhong, Minyan;  Wang, Xin;  Zhan, Zhongwen;  Simons, Mark;  Fielding, Eric J.;  Yun, Sang-Ho;  Hauksson, Egill;  Moore, Angelyn W.;  Liu, Zhen;  Jung, Jungkyo
收藏  |  浏览/下载:16/0  |  提交时间:2019/11/27
Comment on "The global tree restoration potential" 期刊论文
SCIENCE, 2019, 366 (6463)
作者:  Veldman, Joseph W.;  Aleman, Julie C.;  Alvarado, Swanni T.;  Anderson, T. Michael;  Archibald, Sally;  Bond, William J.;  Boutton, Thomas W.;  Buchmann, Nina;  Buisson, Elise;  Canadell, Josep G.;  Dechoum, Michele de Sa;  Diaz-Toribio, Milton H.;  Durigan, Giselda;  Ewel, John J.;  Fernandes, G. Wilson;  Fidelis, Alessandra;  Fleischman, Forrest;  Good, Stephen P.;  Griffith, Daniel M.;  Hermann, Julia-Maria;  Hoffmann, William A.;  Le Stradic, Soizig;  Lehmann, Caroline E. R.;  Mahy, Gregory;  Nerlekar, Ashish N.;  Nippert, Jesse B.;  Noss, Reed F.;  Osborne, Colin P.;  Overbeck, Gerhard E.;  Parr, Catherine L.;  Pausas, Juli G.;  Pennington, R. Toby;  Perring, Michael P.;  Putz, Francis E.;  Ratnam, Jayashree;  Sankaran, Mahesh;  Schmidt, Isabel B.;  Schmitt, Christine B.;  Silveira, Fernando A. O.;  Staver, A. Carla;  Stevens, Nicola;  Still, Christopher J.;  Stromberg, Caroline A. E.;  Temperton, Vicky M.;  Varner, J. Morgan;  Zaloumis, Nicholas P.
收藏  |  浏览/下载:18/0  |  提交时间:2019/11/27