Plant diversity loss reduces soil respiration across terrestrial ecosystems

2019 ◽  
Vol 25 (4) ◽  
pp. 1482-1492 ◽  
Author(s):  
Xinli Chen ◽  
Han Y. H. Chen
Keyword(s):  
Soil Respiration ◽  
Plant Diversity ◽  
Terrestrial Ecosystems ◽  
Diversity Loss

A coupled multi-proxy and process modelling approach for extraction of quantitative terrestrial ecosystem information from speleothems

2021 ◽  
Author(s):  
Franziska Lechleitner ◽  
Christopher C. Day ◽  
Oliver Kost ◽  
Micah Wilhelm ◽  
Negar Haghipour ◽  
...  
Keyword(s):  
Climate Change ◽  
Soil Respiration ◽  
Western Europe ◽  
Global Climate ◽  
Terrestrial Ecosystem ◽  
Terrestrial Ecosystems ◽  
Clear Correlation ◽  
Northern Spain ◽  
Regional Temperature ◽  
Global Carbon

<p>Terrestrial ecosystems are intimately linked with the global climate system, but their response to ongoing and future anthropogenic climate change remains poorly understood. Reconstructing the response of terrestrial ecosystem processes over past periods of rapid and substantial climate change can serve as a tool to better constrain the sensitivity in the ecosystem-climate response.</p><p>In this talk, we will present a new reconstruction of soil respiration in the temperate region of Western Europe based on speleothem carbon isotopes (δ<sup>13</sup>C). Soil respiration remains poorly constrained over past climatic transitions, but is critical for understanding the global carbon cycle and its response to ongoing anthropogenic warming. Our study builds upon two decades of speleothem research in Western Europe, which has shown clear correlation between δ<sup>13</sup>C and regional temperature reconstructions during the last glacial and the deglaciation, with exceptional regional coherency in timing, amplitude, and absolute δ<sup>13</sup>C variation. By combining innovative multi-proxy geochemical analysis (δ<sup>13</sup>C, Ca isotopes, and radiocarbon) on three speleothems from Northern Spain, and quantitative forward modelling of processes in soil, karst, and cave, we show how deglacial variability in speleothem δ<sup>13</sup>C is best explained by increasing soil respiration. Our study is the first to quantify and remove the effects of prior calcite precipitation (PCP, using Ca isotopes) and bedrock dissolution (open vs closed system, using the radiocarbon reservoir effect) from the speleothem δ<sup>13</sup>C signal to derive changes in respired δ<sup>13</sup>C over time. Our approach allows us to estimate the temperature sensitivity of soil respiration (Q<sub>10</sub>), which is higher than current measurements, suggesting that part of the speleothem signal may be related to a change in the composition of the soil respired δ<sup>13</sup>C. This is likely related to changing substrate through increasing contribution from vegetation biomass with the onset of the Holocene.</p><p>These results highlight the exciting possibilities speleothems offer as a coupled archive for quantitative proxy-based reconstructions of climate and ecosystem conditions.</p>

scholarly journals Preliminary results of soil respiration in beech, spruce and grassy stands

2013 ◽  
Vol 59 (3) ◽  
Author(s):  
Tibor Priwitzer ◽  
Jozef Capuliak ◽  
Michal Bošela ◽  
Matej Schwarz
Keyword(s):  
Soil Respiration ◽  
Terrestrial Ecosystems ◽  
Forest Stands ◽  
Preliminary Results ◽  
Young Forest

AbstractSoil respiration constitutes the second largest flux of carbon between terrestrial ecosystems and the atmosphere. This study provides the preliminary results of soil respiration (Rs) observations in three different stands, including two types of young forest stands (beech and spruce) and grassy clearings. The average values of Rs ranged from 0.92 to 15.20 μmol CO

Shifts in Key Leaf Litter Traits Can Predict Effects of Plant Diversity Loss on Decomposition in Streams

Ecosystems ◽  
2020 ◽  
Author(s):  
Naiara López-Rojo ◽  
Javier Pérez ◽  
Jesús Pozo ◽  
Ana Basaguren ◽  
Unai Apodaka-Etxebarria ◽  
...  
Keyword(s):  
Leaf Litter ◽  
Plant Diversity ◽  
Diversity Loss ◽  
Litter Traits

scholarly journals Soil respiration at mean annual temperature predicts annual total across vegetation types and biomes

2009 ◽  
Vol 6 (6) ◽  
pp. 11501-11520
Author(s):  
M. Bahn ◽  
M. Reichstein ◽  
E. A. Davidson ◽  
J. Grünzweig ◽  
M. Jung ◽  
...  
Keyword(s):  
Soil Respiration ◽  
Potential Evapotranspiration ◽  
Terrestrial Ecosystems ◽  
Mean Annual Temperature ◽  
Wet Season ◽  
Seasonally Dry ◽  
Soil Co2 Emissions ◽  
Annual Total ◽  
Spatio Temporal ◽  
Tropical Climates

Abstract. Soil respiration (SR) constitutes the largest flux of CO2 from terrestrial ecosystems to the atmosphere. There still exist considerable uncertainties as to its actual magnitude, as well as its spatial and interannual variability. Based on a reanalysis and synthesis of 72 site-years for 58 forests, plantations, savannas, shrublands and grasslands from boreal to tropical climates we present evidence that total annual SR is closely related to SR at mean annual soil temperature (SR MAT), irrespective of the type of ecosystem and biome. This convergence is to be theoretically expected for non water-limited ecosystems within most of the globally occurring range of annual temperature variability and sensitivity (Q10). We further show that for seasonally dry sites where annual precipitation (P) is lower than potential evapotranspiration (PET), annual SR can be predicted from wet season SR MAT corrected for a factor related to P/PET. Our finding indicates that it is sufficient to measure SR MAT for obtaining a highly constrained estimate of its annual total. This should substantially increase our capacity for assessing the spatial distribution and interannual variation of soil CO2 emissions across ecosystems, landscapes and regions, and thereby contribute to improving the spatio-temporal resolution of a major component of the global carbon cycle.

Abundance- and functional-based mechanisms of plant diversity loss with fertilization in the presence and absence of herbivores

Oecologia ◽  
2015 ◽  
Vol 179 (1) ◽  
pp. 261-270 ◽  
Author(s):  
Zhongling Yang ◽  
Yann Hautier ◽  
Elizabeth T. Borer ◽  
Chunhui Zhang ◽  
Guozhen Du
Keyword(s):  
Plant Diversity ◽  
Diversity Loss ◽  
Presence And Absence

scholarly journals The unseen majority: soil microbes as drivers of plant diversity and productivity in terrestrial ecosystems

2008 ◽  
Vol 11 (3) ◽  
pp. 296-310 ◽  
Author(s):  
Marcel G. A. van der Heijden ◽  
Richard D. Bardgett ◽  
Nico M. van Straalen
Keyword(s):  
Plant Diversity ◽  
Soil Microbes ◽  
Terrestrial Ecosystems

scholarly journals Increasing effects of chronic nutrient enrichment on plant diversity loss and ecosystem productivity over time

Ecology ◽  
2020 ◽  
Author(s):  
Eric W. Seabloom ◽  
Peter B. Adler ◽  
Juan Alberti ◽  
Lori Biederman ◽  
Yvonne M. Buckley ◽  
...  
Keyword(s):  
Plant Diversity ◽  
Nutrient Enrichment ◽  
Ecosystem Productivity ◽  
Diversity Loss ◽  
Over Time

Spatiotemporal Pattern of Soil Respiration of Terrestrial Ecosystems in China: The Development of a Geostatistical Model and Its Simulation

2010 ◽  
Vol 44 (16) ◽  
pp. 6074-6080 ◽  
Author(s):  
Guirui Yu ◽  
Zemei Zheng ◽  
Qiufeng Wang ◽  
Yuling Fu ◽  
Jie Zhuang ◽  
...  
Keyword(s):  
Soil Respiration ◽  
Terrestrial Ecosystems ◽  
Spatiotemporal Pattern ◽  
Geostatistical Model
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