Resultats globals: 4 registres trobats en 0.03 segons.
Articles, 4 registres trobats
Articles 4 registres trobats  
1.
30 p, 690.3 KB On the early epidemic dynamics for pairwise models / Llensa, Carlos (Universitat de Girona. Departament d’Informàtica i Matemàtica Aplicada) ; Juher, David (Universitat de Girona. Departament d’Informàtica i Matemàtica Aplicada) ; Saldaña, Joan (Universitat de Girona. Departament d’Informàtica i Matemàtica Aplicada)
The relationship between the basic reproduction number R0 and the exponential growth rate, specific to pair approximation models, is derived for the SIS, SIR and SEIR deterministic models without demography. [...]
2014 - 10.1016/j.jtbi.2014.02.037
Journal of Theoretical Biology, Vol. 352 (2014) , p. 71-81  
2.
66 p, 2.7 MB Factors influencing the foliar elemental composition and stoichiometry in forest trees in Spain / Sardans i Galobart, Jordi (Centre de Recerca Ecològica i Aplicacions Forestals) ; Alonso, Rocío (Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (Espanya)) ; Carnicer i Cols, Jofre (Universitat de Barcelona. Departament d'Ecologia) ; Fernández Martínez, Marcos (Centre de Recerca Ecològica i Aplicacions Forestals) ; García Vivanco, Marta (Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (Espanya)) ; Peñuelas, Josep (Universitat Autònoma de Barcelona. Departament de Biologia Animal, de Biologia Vegetal i d'Ecologia)
Concentrations of nutrient elements in organisms and in the abiotic environment are key factors influencing ecosystem structure and function. We studied how concentrations and stoichiometries of nitrogen (N), phosphorus (P) and potassium (K) in leaves of forest trees are related to phylogeny and to environmental factors (mean annual precipitation, mean annual temperature, forest type, and nitrogen deposition). [...]
2016 - 10.1016/j.ppees.2016.01.001
Perspectives in plant ecology, evolution and systematics, Vol. 18 Issue 1 (Feb. 2016) , p. 52-69
2 documents
3.
23 p, 8.0 MB The Application of ecological stoichiometry to plant–microbial–soil organic matter transformations / Zechmeister-Boltenstern, Sophie (Universität für Bodenkultur (Viena, Àustria). Department für Wald- und Bodenwissenschaften) ; Keiblinger, Katharina Maria (Universität für Bodenkultur (Viena, Àustria). Department für Wald- und Bodenwissenschaften) ; Mooshammer, Maria (Universität Wien. Institut für Mikrobiologie und Ecosystem Wissenschaft) ; Peñuelas, Josep (Universitat Autònoma de Barcelona. Departament de Biologia Animal, de Biologia Vegetal i d'Ecologia) ; Richter, Andreas (Universität Wien. Institut für Mikrobiologie und Ecosystem Wissenschaft) ; Sardans i Galobart, Jordi (Centre de Recerca Ecològica i Aplicacions Forestals) ; Wanek, Wolfgang (Universität für Bodenkultur (Viena, Àustria). Department für Wald- und Bodenwissenschaften)
Elemental stoichiometry constitutes an inherent link between biogeochemistry and the structure and processes within food webs, and thus is at the core of ecosystem functioning. Stoichiometry allows for spanning different levels of biological organization, from cellular metabolism to ecosystem structure and nutrient cycling, and is therefore particularly useful for establishing links between different ecosystem compartments. [...]
2015 - 10.1890/14-0777.1
Ecological Monographs, Vol. 85, issue 2 (May 2015) , p. 133-155
2 documents
4.
10 p, 230.0 KB The effects of irradiance and photoperiod on the growth rate of three freshwater green algae isolated from a eutrophic lake / Bouterfas, Radia (Université Cadi Ayyad (Marroc). Département de Biologie) ; Belkoura, Mouhssine (Faculté des Sciences Semlalia (Marroc)) ; Dauta, Alain (Université Paul Sabatier (Toulouse, França). Centre d’Ecologie des Systèmes Aquatiques Continentaux)
In order to optimise algal growth in mass culture systems, the effect of irradiance and photoperiod on the growth rate of three freshwater green algae isolated from an eutrophic lake (Selenastrum minutum, Coelastrum microporum f. [...]
Con objeto de optimizar el crecimiento algal en cultivos de producción masiva, se han estudiado, en cultivos no estériles y sin limitación de nutrientes, el efecto de la irradiancia y el fotoperiodo sobre la tasa de crecimiento en tres algas de agua dulce de un lago eutrófico (Selenastrum minutum, Coelastrum microporum f. [...]

2006
Limnética, V. 25 n. 3 (2006) p. 647-656  

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