Results 81 to 90 of about 4,131 (264)

A new instrument for stable isotope measurements of ¹³C and ¹⁸O in CO₂ – instrument performance and ecological application of the Delta Ray IRIS analyzer [PDF]

Atmospheric Measurement Techniques, 2017
We used the recently developed commercially available Delta Ray isotope ratio infrared spectrometer (IRIS) to continuously measure the CO2 concentration c and its isotopic composition δ13C and δ18O in a managed beech forest in central Germany.
J. Braden-Behrens, Y. Yan, A. Knohl, A. Knohl   +3 more
doaj   +1 more source

Herbarium data accurately predict the timing and duration of population‐level flowering displays

Ecography, Volume 2025, Issue 3, March 2025.
Forecasting the impacts of changing climate on the phenology of plant populations is essential for anticipating and managing potential ecological disruptions to biotic communities. Herbarium specimens enable assessments of plant phenology across broad spatiotemporal scales.
Isaac W. Park, Tadeo Ramirez‐Parada, Sydne Record, Charles Davis, Aaron M. Ellison, Susan J. Mazer   +5 more
wiley   +1 more source

New Method for Increasing Sustainable Agricultural Yield [PDF]

, 2017
The main objective of this study is to look for a new method, to obtain the maximum production, and the minimum economic and environmental cost. Scientific advances in bioclimatology have brought a greater understanding of the functioning of plant ...
Cano, Eusébio, Cano-Ortiz, Ana, Gea, F. Leiva, Musarella, Carmelo, Pinto-Gomes, Carlos, Piñar Fuentes, José C.   +5 more
core  

Past and Future Climate‐Driven Changes of Agricultural Land in Central Europe

Geophysical Research Letters, Volume 51, Issue 24, 28 December 2024.
Abstract Europe is expected to experience major climatic shifts during the 21st century but the impact on agricultural productivity from such changes is uncertain. Here, we combine proxy, instrumental, and model data to assess interannual to multi‐centennial changes in central European agroclimate over the past 2,000 years and projections into the near
M. C. A. Torbenson, J. Esper, R. Brázdil, U. Büntgen, J. E. Olesen, D. Semarádová, M. Vlach, O. Urban, J. Balek, T. Kolář, M. Rybníček, N. Pernicová, F. Reinig, E. Martinez del Castillo, P. D. Jones, M. Trnka   +15 more
wiley   +1 more source

Modificaciones térmicas en las ciudades. Avance sobre la isla de calor en Barcelona [PDF]

, 1990
Cet article est la présentation des resultats initiels du premier étude empirique sur l'ile de chaleur a Barcelona. Après l'analyse de la bibliographie internationale sur le theme et son évolution, on présente la méthodologie du travail, basée en la ...
Carreras, Carles, Martín Vide, Javier, Marín Ramos, Mercedes, Moreno, María del Carmen, Sabí i Bonastre, Joan   +4 more
core   +1 more source

Una nueva asociación prepirenaica de Asplenion petrarchae Br.-Bl. in Meier & Br.-Bl. 1934 nom. mut [PDF]

, 2003
A new Pre-Pyrenean association of Asplenion petrarchae Br.-B1. in Meier & Br.-131. 1934 nom. mut. Palabras clave. Vegetación rupícola, Asplenietea, fitosociología, sintaxonomía, España. Key words.
Coca Calvo, Beatriz, Crespo Villalba, Manuel Benito, Juan, Ana   +2 more
core   +4 more sources

Birch (Betula pubescens Ehrh.) Encroachment Alters Contribution of Plant Functional Groups to Ecosystem Carbon Cycling in a Rewetted Bog

Ecology and Evolution, Volume 14, Issue 12, December 2024.
Rewetted bogs with high water levels (WL) and mire‐specific vegetation function as important carbon sinks, but tree encroachment, often associated with low WL, may threaten this. Our study compared CO2 exchange at two bog sites—one with high WL and mire‐specific vegetation (open site, OS) and another with fluctuating WL and dense birch encroachment ...
Carla Welpelo, Maren Dubbert, Bärbel Tiemeyer, Alexander Knohl, Arndt Piayda   +4 more
wiley   +1 more source

Perfil hematológico de búfalas da raça Murrah, criadas ao sol e à sombra, em clima tropical da Amazônia Oriental Hematologic profile of murrah buffalo cows, raised in the sun and under shade, at tropical climate of the eastern amazon

Acta Amazonica, 2011
Foram avaliadas as respostas hematológicas de 20 búfalas, criadas ao sol (grupo - SS) e à sombra (grupo - CS), em Belém, Pará. Os animais do grupo CS (n = 10) estavam em sistema silvipastoril, com Racosperma mangium e os do SS (n = 10), em piquetes sem ...
Jamile Andréa Rodrigues Silva, Airton Alencar Araújo, José de Brito Lourenço Júnior, Rinaldo Batista Viana, Núbia de Fátima Alves Santos, Alexandre Rossetto Garcia   +5 more
doaj   +1 more source

El Niño–Southern Oscillation (ENSO) event reduces CO₂ uptake of an Indonesian oil palm plantation [PDF]

Biogeosciences, 2019
The El Niño–Southern Oscillation (ENSO) in 2015 was one of the strongest observed in almost 20 years and set the stage for a severe drought and the emergence of widespread fires and related smoke emission over large parts of Southeast Asia.
C. Stiegler, A. Meijide, Y. Fan, A. Ashween Ali, T. June, A. Knohl   +5 more
doaj   +1 more source

Perfil hematológico de búfalas da raça Murrah, criadas ao sol e à sombra, em clima tropical da Amazônia. [PDF]

, 2015
Foram avaliadas as respostas hematológicas de 20 búfalas, criadas ao sol (grupo - SS) e à sombra (grupo - CS), em Belém, Pará. Os animais do grupo CS (n = 10) estavam em sistema silvipastoril, com Racosperma mangium e os do SS (n = 10), em piquetes sem ...
ARAÚJO, A. A., GARCIA, A. R., LOURENÇO JÚNIOR, J. de B., SANTOS, N. de F. A., SILVA, J. A. R., VIANA, R. B.   +5 more
core