Results 31 to 40 of about 1,314,808 (196)

Population Dynamics on Complex Food Webs [PDF]

, 2011
In this work we analyse the topological and dynamical properties of a simple model of complex food webs, namely the niche model. In order to underline competition among species, we introduce "prey" and "predators" weighted overlap graphs derived from the
Barabási A.-L., Bollobás B., Cohen J. E., Erdős P., May P. M., Stouffer D. B.   +5 more
core   +2 more sources

Food Webs

, 2022
Ciliates are important elements of the trophic networks of aquatic and terrestrial environments, they can be primary producers (myxotrophs), consumers of bacteria, algae, flagellates, even other ciliates and can serve as food for metazoans, for all the above they are the link between different levels of food webs.
Laura Mondragón-Camarillo, Salvador Rodríguez Zaragoza   +1 more
openaire   +3 more sources

Evaluation of the effect of agroclimatic variables on the probability and timing of olive fruit fly attack

Frontiers in Plant Science
Agroclimatic variables may affect insect and plant phenology, with unpredictable effects on pest populations and crop losses. Bactrocera oleae Rossi (Diptera: Tephritidae) is a specific pest of Olea europaea plants that can cause annual economic losses ...
Gabriele Rondoni, Elisabetta Mattioli, Elisabetta Mattioli, Vito Antonio Giannuzzi, Elena Chierici, Andrea Betti, Gaetano Natale, Gaetano Natale, Ruggero Petacchi, Franco Famiani, Antonio Natale, Eric Conti   +11 more
doaj   +1 more source

Asynchronous food-web pathways could buffer the response of Serengeti predators to El Niño southern oscillation [PDF]

, 2013
Understanding how entire ecosystems maintain stability in the face of climatic and human disturbance is one of the most fundamental challenges in ecology.
Bukombe, J., Byrom, A.E., Cleaveland, S., Craft, M.E., Dempewolf, J., Durant, S.M., Forrester, G.J., Fryxell, J.M., Hampson, K., Hilborn, R., Lembo, T., Mchetto, J., Mduma, S.A.R., Metzger, K.L., Mosser, A., Nkwabi, A., Packer, C., Sinclair, A.R.E.   +17 more
core   +1 more source

Modelling coevolution in multispecies communities

, 1998
We introduce the Webworld model, which links together the ecological modelling of food web structure with the evolutionary modelling of speciation and extinction events. The model describes dynamics of ecological communities on an evolutionary timescale.
Caldarelli, Guido, Higgs, Paul G., McKane, Alan J.   +2 more
core   +3 more sources

Some Properties of the Speciation Model for Food-Web Structure - Mechanisms for Degree Distributions and Intervality

, 2005
We present a mathematical analysis of the speciation model for food-web structure, which had in previous work been shown to yield a good description of empirical data of food-web topology. The degree distributions of the network are derived.
A.G. Rossberg, Amaral, Bailey, Baird, Berlow, Briand, Caldarelli, Camacho, Camacho, Camacho, Cattin, Cohen, Cohen, Drossel, Drossel, Goldwasser, H. Matsuda, Hall, Havens, K. Itoh, Martinez, Memmott, Montoya, Pastor-Satorras, Pimm, Polis, Raup, Stouffer, T. Amemiya, Tokita, Vazquez, Warren, Warren, Williams, Yoshida, Yoshida   +35 more
core   +1 more source

Early warning of complex climate risk with integrated artificial intelligence

Nature Communications
As climate change accelerates, human societies face growing exposure to disasters and stress, highlighting the urgent need for effective early warning systems (EWS).
Markus Reichstein, Vitus Benson, Jan Blunk, Gustau Camps-Valls, Felix Creutzig, Carina J. Fearnley, Boran Han, Kai Kornhuber, Nasim Rahaman, Bernhard Schölkopf, José María Tárraga, Ricardo Vinuesa, Karen Dall, Joachim Denzler, Dorothea Frank, Giulia Martini, Naomi Nganga, Danielle C. Maddix, Kommy Weldemariam   +18 more
doaj   +1 more source

Trophic structure and fishing impacts on an oligotrophic ecosystem in the Western Mediterranean: the Balearic Islands

Frontiers in Marine Science, 2023
Within the context of the ecosystem approach to fisheries management, an ecosystem model was developed for the Balearic Islands in the early 2000s, covering from 0 to 800 m of depth.
Paula Sánchez-Zulueta, María Valls, Beatriz Guijarro, María Ángeles Torres, María Ángeles Zapata, Marta Coll, Xavier Corrales, Eider Andonegi, Marta Díaz-Valdés, Enric Massutí, Francesc Ordines   +10 more
doaj   +1 more source

Allochthonous resources are less important for faunal communities on highly productive, small tropical islands

Ecology and Evolution, 2021
Ecosystems are interconnected by energy fluxes that provide resources for the inhabiting organisms along the transition zone. Especially where in situ resources are scarce, ecosystems can become highly dependent on external resources.
Sebastian Steibl, Robert Sigl, Sanja Blaha, Sophia Drescher, Gerhard Gebauer, Elif Gürkal, Frederic Hüftlein, Anna Satzger, Michael Schwarzer, Dimitri Seidenath, Jana Welfenbach, Raphael S. Zinser, Christian Laforsch   +12 more
doaj   +1 more source

Investigating food web structure and system function of an artificial reef ecosystem based on carbon and nitrogen stable isotope analysis: implications for reef management

Frontiers in Marine Science, 2023
IntroductionFood web is an important basis for identifying trophodynamic processes, and evaluating the structural and functional characteristics of ecosystems.
Jie Feng, Jie Feng, Jie Feng, Jie Feng, Jie Feng, Jie Feng, Xiaolong Zhao, Fan Bi, Fan Bi, Wei Zhao, Wei Zhao, Wei Zhao, Wei Zhao, Liang Zhao, Liang Zhao, Liang Zhao, Liang Zhao, Hao Song, Hao Song, Hao Song, Hao Song, Meijie Yang, Meijie Yang, Meijie Yang, Meijie Yang, Zhi Hu, Zhi Hu, Zhi Hu, Zhi Hu, Cong Zhou, Cong Zhou, Cong Zhou, Cong Zhou, Pu Shi, Pu Shi, Pu Shi, Pu Shi, Pengpeng Hu, Pengpeng Hu, Pengpeng Hu, Pengpeng Hu, Peizhen Ma, Pengfei Sun, Han Jiang, Jiangling Xu, Jiangling Xu, Tao Zhang, Tao Zhang, Tao Zhang, Tao Zhang   +49 more
doaj   +1 more source