Results 121 to 130 of about 26,538 (206)

Water stable isotopes reveal the ecohydrological importance of stemflow infiltration for mature and juvenile European beech

New Phytologist, EarlyView.
Field site and experimental set‐up with stemflow‐labelled European beech trees. Summary Stemflow of forest trees can contribute a significant fraction of water to forest's water fluxes; however, it is still unclear whether and to what extent trees and their neighbours use stemflow for water uptake and supply.
Simon Haberstroh, Simon Keller, Laura Kinzinger, Judith Mach, Kathrin Kühnhammer, Markus Weiler, Natalie Orlowski, Christiane Werner   +7 more
wiley   +1 more source

Concurrent Measurement of O2 Production and Isoprene Emission During Photosynthesis: Pros, Cons and Metabolic Implications of Responses to Light, CO2 and Temperature

Plant, Cell &Environment, EarlyView.
ABSTRACT Traditional leaf gas exchange experiments have focused on net CO2 exchange (Anet). Here, using California poplar (Populus trichocarpa), we coupled measurements of net oxygen production (NOP), isoprene emissions and δ18O in O2 to traditional CO2/H2O gas exchange with chlorophyll fluorescence, and measured light, CO2 and temperature response ...
Kolby Jeremiah Jardine, Suman Som, Luiza Beraldi Gallo, Jilian Demus, Tomas Ferreira Domingues, Christina Marie Wistrom, Lianhong Gu, Guillaume Tcherkez, Ülo Niinemets   +8 more
wiley   +1 more source

Site‐Specific Functional Response of the Tibetan Plateau's Forests to Climate Change Over the Past 200 Years – A Tree‐Ring Isotope Perspective

Plant, Cell &Environment, EarlyView.
ABSTRACT Global warming challenges forest resilience on the Tibetan Plateau by disrupting tree's physiological adjustments. However, understanding the physiological adjustments between autotrophic and heterotrophic metabolism under shifting moisture regimes remains challenging.
Wenling An, Valentina Vitali, Xiaohong Liu, Kerstin Treydte, Chenxi Xu, Zhengtang Guo   +5 more
wiley   +1 more source

Temperature Changes in the Altai Are Driven by Solar and Anthropogenic Forcing

CHIMIA, 2009
Anja Eichler, Susanne Olivier, Keith Henderson, Andreas Laube, Jürg Beer, Heinz W. Gäggeler, Tatyana Papina, Margit Schwikowski   +7 more
doaj   +1 more source

Light oxygen isotopic composition in deep mantle reveals oceanic crust subduction before 3.3 billion years ago

Communications Earth & Environment
Compositional heterogeneity exists in Earth’s deep mantle, which can be caused by the subduction of oceanic slabs. How early this process started on Earth remains highly debated due to the scarcity of early Archean materials with pristine mantle ...
Dongjian Ouyang, Huiming Bao, Gary R. Byerly, Qiuli Li   +3 more
doaj   +1 more source

Drought resistance is influenced by soil water uptake depth in dryland shrubs

Plant Biology, EarlyView.
Higher drought resistance was associated with shifts from shallow to deep soil water uptake under drier conditions, with both covarying with functional traits in drylands. Abstract Climate change exacerbates aridity in dry shrublands leading to different responses of coexisting shrubs to drought, including different resistance (capacity to sustain ...
E. Tamudo, E. González de Andrés, J. J. Camarero, A. Gazol   +3 more
wiley   +1 more source

盐生荒漠土壤水稳定氢、氧同位素组成季节动态/Analysis on Seasonal Dynamics of δ18O and δD in Soil Water at a Saline Desert Site in the Southeastern Junggar Basin[J]

, 2014
对准噶尔盆地东南缘降水和土壤水稳定氢、氧同位素组成(δ18O和δD)进行了测定,分析了降水中δ18O和δD值的季节变化规律、表层土壤水中188O和δD值对降水脉冲的动态响应以及不同深度土壤水中188O和δD值的变化特征.结果表明:该区域大气降水线为δD=7.691 δ18O+4.606;降水与表层土壤水中188O和18值表现出明显的季节变化特征;表层土壤水中δ18O和δD值、质量含水量对降水脉冲响应显著,且不同量级的降水导致不同程度的响应.利用LSD法对0～300 ...
郑新军, 中国科学院新疆生态与地理研究所 荒漠与绿洲生态国家重点实验室/新疆阜康荒漠生态系统国家野外科学观测研究站,新疆乌鲁木齐,830011, 李彦, 周海, 唐立松, 中国科学院大学,北京100049   +5 more
core  

Conditions and timing for the precipitation of early marine diagenetic dolomite in the Triassic Dolomia Principale (northern Italy)

Sedimentology, EarlyView.
ABSTRACT Thermodynamic constraints and empirical evidence often suggest that fabric‐retentive replacement dolomites are stable carbonate minerals that preserve ancient seawater properties. This study evaluates this hypothesis by examining the Upper Triassic Dolomia Principale in Northern Italy.
Vivien Folliot, Giovanna Della Porta, Mathias Mueller, Fabrizio Berra, Benjamin F. Walter, Aratz Beranoaguirre, Sylvia Riechelmann, Oskar Schramm, Adrian Immenhauser   +8 more
wiley   +1 more source

Sealant Testing δ18O and δ13C Data

, 2019
This file contains all of the δ18O and δ13C data sampled from modern bivalves for the sealant testing portion of this study. Data are divided into three sections (A, B, and C), where A and C are samples taken from the control areas and B are samples ...
Tobin, Thomas S., Thomas S. Tobin (6322214), Ellis, Nicholas M., Nicholas M. Ellis (6322211)   +3 more
core   +1 more source

Stable Isotopes (δ18O) analysis of G. bulloides from sediment core HER-GC-ALB2 (ALB-2)

, 2018
Stable Isotopes (δ18O) analysis of G.
Jaime Frigola (6974747), Albert Català (7885361), Isabel Cacho (6962510), Fabrizio Lirer (7113104), Lirer, Fabrizio, Leopoldo D Peña (6973688), Català, Albert, Frigola, Jaime, Pena, Leopoldo D, Cacho, Isabel, Isabel Cacho, Leopoldo D Pena, Fabrizio Lirer, Albert Català, Jaime Frigola   +14 more
core   +1 more source