Resultats globals: 8 registres trobats en 0.02 segons.
Articles, 8 registres trobats
Articles 8 registres trobats  
27 p, 2.9 MB Potential of Photochemical reflectance index for indicating photochemistry and light use efficiency in leaves of European beech and Norway spruce trees / Kováč, Daniel (Global Change Research Institute CAS) ; Veselovská, Petra (Global Change Research Institute CAS) ; Klem, Karel (Global Change Research Institute CAS) ; Večeřová, Kristýna (Global Change Research Institute CAS) ; Ač, Alexander (Global Change Research Institute CAS) ; Peñuelas, Josep (Centre de Recerca Ecològica i Aplicacions Forestals) ; Urban, Otmar (Global Change Research Institute CAS)
Hyperspectral reflectance is becoming more frequently used for measuring the functions and productivity of ecosystems. The purpose of this study was to re-evaluate the potential of the photochemical reflectance index (PRI) for evaluating physiological status of plants. [...]
2018 - 10.3390/rs10081202
Remote Sensing, Vol. 10, Núm. 8 (July 2018) , art. 1202  
27 p, 5.9 MB Interference with plastome gene expression and Clp protease activity in Arabidopsis triggers a chloroplast unfolded protein response to restore protein homeostasis / Llamas, Ernesto (Centre de Recerca en Agrigenòmica) ; Pulido, Pablo (Centre de Recerca en Agrigenòmica) ; Rodriguez-Concepción, Manuel (Centre de Recerca en Agrigenòmica)
Disruption of protein homeostasis in chloroplasts impairs the correct functioning of essential metabolic pathways, including the methylerythritol 4-phosphate (MEP) pathway for the production of plastidial isoprenoids involved in photosynthesis and growth. [...]
2017 - 10.1371/journal.pgen.1007022
Plos genetics, Vol. 13, issue 9 (set. 2017) , e1007022  
14 p, 2.0 MB Assessment of the response of photosynthetic activity of Mediterranean evergreen oaks to enhanced drought stress and recovery by using PRI and R690/R630 / Zhang, Chao (Centre de Recerca Ecològica i Aplicacions Forestals) ; Preece, Catherine (Centre de Recerca Ecològica i Aplicacions Forestals) ; Filella, Iolanda (Centre de Recerca Ecològica i Aplicacions Forestals) ; Peñuelas, Josep (Universitat Autònoma de Barcelona. Departament de Biologia Animal, de Biologia Vegetal i d'Ecologia)
The photochemical reflectance index (PRI) and red-edge region of the spectrum are known to be sensitive to plant physiological processes, and through measurement of these optical signals it is possible to use non-invasive remote sensing to monitor the plant photosynthetic status in response to environmental stresses such as drought. [...]
2017 - 10.3390/f8100386
Forests, Vol. 8, issue 10 (Oct. 2017) , art. 386  
17 p, 1.1 MB A remotely sensed pigment index reveals photosynthetic phenology in evergreen conifers / Gamon, John A. (University of Nebraska-Lincoln. Center for Advanced Land Management Information Technologies.) ; Huemmrich, K. Fred (Goddard Space Flight Center) ; Wong, Christopher Y.S. (University of Toronto. Department of Biology) ; Ensminger, Ingo (University of Toronto. Department of Biology) ; Garrity, Steven (Decagon Devices, Inc.) ; Hollinger, David Y. (United States. Forest Service. Northern Research Station) ; Noormets, Asko (North Carolina State University. Departament of Forestry and Environmental Resources) ; Peñuelas, Josep (Centre de Recerca Ecològica i Aplicacions Forestals)
In evergreen conifers, where the foliage amount changes little with season, accurate detection of the underlying “photosynthetic phenology” from satellite remote sensing has been difficult, presenting challenges for global models of ecosystem carbon uptake. [...]
2016 - 10.1073/pnas.1606162113
Proceedings of the National Academy of Sciences, Vol. 113, Issue 46 (November 2016) , p. 13087-13092  
2.0 MB Filtration rates of the non-native Chinese mystery snail (Bellamya chinensis) and potential impacts on microbial communities / Olden, Julian D. ; Ray, Liza ; Mims, Meryl C. ; Horner-Devine, M. Claire ; University of Washington. School of Aquatic and Fishery Sciences
Invasive species in the phylum Mollusca, including gastropods and bivalves, have caused substantial impacts in freshwater ecosystems. The Chinese mystery snail, Bellamya chinensis, is a large viviparid snail native to Southeastern Asia and widely introduced throughout United States and parts of Canada and Europe. [...]
Las especies invasoras del phyllum Mollusca, incluyendo los gasterópodos y bivalvos, han causado impactos importantes en los ecosistemas dulceacuícolas. Bellamya chinensis, es un vivíparo de gran tamaño, nativo del sureste de Asia y ampliamente introducido a lo largo de los Estados Unidos y parte de Canadá y Europa. [...]

Limnética, Vol. 32, Núm. 1 (2013) , p. 107-120  
10 p, 182.3 KB Lutein and the C/N as tracers of organic matter in the Palmones River estuary / Arrojo, Ma Angeles (Universidad de Málaga. Departamento de Ecología) ; Jiménez, Carlos (Universidad de Málaga. Departamento de Ecología) ; Rubio, Lourdes (Universidad de Málaga. Departamento de Biología Vegetal) ; Niell, F. Xavier (Universidad de Málaga. Departamento de Ecología)
Los pigmentos vegetales han sido usados como bioindicadores de la presencia de organismos fototrópicos en ríos, estuarios y sedimentos marinos actuales y en estudios paleolimnológicos. En el sedimento del estuario río Palmones (Bahía de Algeciras, Sur de España) se ha estudiado las concentraciones de clorofila a y luteína, el índice C/N y el contenido en materia orgánica. [...]
Plant pigments have been used as biomarkers of the presence of phototrophic organisms in rivers, estuaries and sea sediments in present and in paleolimnological studies. Chlorophyll a and lutein concentration, C/N ratio and organic matter content have been studied in the sediment of the Palmones River estuary (Algeciras Bay, Southern Spain). [...]

Limnética, Vol. 28, Núm. 2 ( 2009) , p. 243-252  
26 p, 553.7 KB On the occurrence and ecological features of deep chlorophyll maxima (DCM) in Spanish stratified lakes / Camacho González, Antonio (Universitat de València. Departament de Microbiologia y Ecologia)
Deep chlorophyll maxima (DCM) are absolute maxima of Chlorophyll-a concentration among the vertical profile that can be found in deep layers of stratified lakes. In this manuscript I review the principal mechanisms that have been argued to explain the formation of DCM, which include, among others, in situ growth of metalimnetic phototrophs, differential impact of grazing between the different lake strata, and passive sedimentation to the layers where water density and cell density are equalized. [...]
Los máximos profundos de clorofila (DCM) son máximos absolutos de concentración de clorofila-a que pueden encontrarse en capas profundas de los lagos estratificados. En este manuscrito se revisan los principales mecanismos que se han propuesto para explicar la formación de los DCM, entre los que se cuentan, al margen de otros secundarios, el crecimiento in situ de los microorganismos fotótrofos metalimnéticos, el impacto diferencial del herbivorismo en diferentes estratos del lago, y la sedimentación pasiva hasta las capas en las que se iguala la densidad del agua con la densidad celular. [...]

Limnética, V. 25 n. 1-2 (2006) p. 453-478  
13 p, 306.4 KB Hydrology, light and the use of organic and inorganic materials as structuring factors of biological communities in Mediterranean streams / Sabater, Sergi ; Guasch, Helena ; Muñoz, Isabel ; Romaní, Anna
Hydrological disturbances, light availability and nutrients are the most relevant factors determining the structure of the biological communities in Mediterranean rivers. While some hydrological disturbances are able to induce catastrophic effects, which may cause a complete reset in physical and biological conditions, continued enrichment or changes in light availability are factors leading to the progressive shift in the communities of autotrophs and heterotrophs in the systems. [...]
Los cambios hidrológicos, la disponibilidad de la luz y los nutrientes son los factores más importantes que determinan la estructura y función de la comunidad en los ríos Mediterráneos. Mientras los cambios hidrológicos pueden causar un total reestablecimiento en las condiciones físicas y biológicas, un aumento continuo de la concentración de nutrientes o cambios en la disponibilidad de la luz, son factores que favorecen un cambio progresivo de las comunidades de autótrofos y heterótrofos. [...]

Limnética, V. 25 n. 1-2 (2006) p. 335-348  

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