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Your search keyword '"Tielidze, L."' showing total 4 results
Start Over Author "Tielidze, L." Publication Type Electronic Resources
4 results on '"Tielidze, L."'

1. The development of terrestrial ecosystems emerging after glacier retreat

Author

Ficetola, G, Marta, S, Guerrieri, A, Cantera, I, Bonin, A, Cauvy-Fraunié, S, Ambrosini, R, Caccianiga, M, Anthelme, F, Azzoni, R, Almond, P, Alviz Gazitúa, P, Ceballos Lievano, J, Chand, P, Chand Sharma, M, Clague, J, Cochachín Rapre, J, Compostella, C, Encarnación, R, Dangles, O, Deline, P, Eger, A, Erokhin, S, Franzetti, A, Gielly, L, Gili, F, Gobbi, M, Hågvar, S, Kaufmann, R, Khedim, N, Meneses, R, Morales-Martínez, M, Peyre, G, Pittino, F, Proietto, A, Rabatel, A, Sieron, K, Tielidze, L, Urseitova, N, Yang, Y, Zaginaev, V, Zerboni, A, Zimmer, A, Diolaiuti, G, Taberlet, P, Poulenard, J, Fontaneto, D, Thuiller, W, Carteron, A, Ficetola, Gentile Francesco, Marta, Silvio, Guerrieri, Alessia, Cantera, Isabel, Bonin, Aurélie, Cauvy-Fraunié, Sophie, Ambrosini, Roberto, Caccianiga, Marco, Anthelme, Fabien, Azzoni, Roberto Sergio, Almond, Peter, Alviz Gazitúa, Pablo, Ceballos Lievano, Jorge Luis, Chand, Pritam, Chand Sharma, Milap, Clague, John J., Cochachín Rapre, Justiniano Alejo, Compostella, Chiara, Encarnación, Rolando Cruz, Dangles, Olivier, Deline, Philip, Eger, Andre, Erokhin, Sergey, Franzetti, Andrea, Gielly, Ludovic, Gili, Fabrizio, Gobbi, Mauro, Hågvar, Sigmund, Kaufmann, Rüdiger, Khedim, Norine, Meneses, Rosa Isela, Morales-Martínez, Marco Aurelio, Peyre, Gwendolyn, Pittino, Francesca, Proietto, Angela, Rabatel, Antoine, Sieron, Katrin, Tielidze, Levan, Urseitova, Nurai, Yang, Yan, Zaginaev, Vitalii, Zerboni, Andrea, Zimmer, Anaïs, Diolaiuti, Guglielmina Adele, Taberlet, Pierre, Poulenard, Jerome, Fontaneto, Diego, Thuiller, Wilfried, Carteron, Alexis, Ficetola, G, Marta, S, Guerrieri, A, Cantera, I, Bonin, A, Cauvy-Fraunié, S, Ambrosini, R, Caccianiga, M, Anthelme, F, Azzoni, R, Almond, P, Alviz Gazitúa, P, Ceballos Lievano, J, Chand, P, Chand Sharma, M, Clague, J, Cochachín Rapre, J, Compostella, C, Encarnación, R, Dangles, O, Deline, P, Eger, A, Erokhin, S, Franzetti, A, Gielly, L, Gili, F, Gobbi, M, Hågvar, S, Kaufmann, R, Khedim, N, Meneses, R, Morales-Martínez, M, Peyre, G, Pittino, F, Proietto, A, Rabatel, A, Sieron, K, Tielidze, L, Urseitova, N, Yang, Y, Zaginaev, V, Zerboni, A, Zimmer, A, Diolaiuti, G, Taberlet, P, Poulenard, J, Fontaneto, D, Thuiller, W, Carteron, A, Ficetola, Gentile Francesco, Marta, Silvio, Guerrieri, Alessia, Cantera, Isabel, Bonin, Aurélie, Cauvy-Fraunié, Sophie, Ambrosini, Roberto, Caccianiga, Marco, Anthelme, Fabien, Azzoni, Roberto Sergio, Almond, Peter, Alviz Gazitúa, Pablo, Ceballos Lievano, Jorge Luis, Chand, Pritam, Chand Sharma, Milap, Clague, John J., Cochachín Rapre, Justiniano Alejo, Compostella, Chiara, Encarnación, Rolando Cruz, Dangles, Olivier, Deline, Philip, Eger, Andre, Erokhin, Sergey, Franzetti, Andrea, Gielly, Ludovic, Gili, Fabrizio, Gobbi, Mauro, Hågvar, Sigmund, Kaufmann, Rüdiger, Khedim, Norine, Meneses, Rosa Isela, Morales-Martínez, Marco Aurelio, Peyre, Gwendolyn, Pittino, Francesca, Proietto, Angela, Rabatel, Antoine, Sieron, Katrin, Tielidze, Levan, Urseitova, Nurai, Yang, Yan, Zaginaev, Vitalii, Zerboni, Andrea, Zimmer, Anaïs, Diolaiuti, Guglielmina Adele, Taberlet, Pierre, Poulenard, Jerome, Fontaneto, Diego, Thuiller, Wilfried, and Carteron, Alexis

Abstract

The global retreat of glaciers is dramatically altering mountain and high-latitude landscapes, with new ecosystems developing from apparently barren substrates1–4. The study of these emerging ecosystems is critical to understanding how climate change interacts with microhabitat and biotic communities and determines the future of ice-free terrains1,5. Here, using a comprehensive characterization of ecosystems (soil properties, microclimate, productivity and biodiversity by environmental DNA metabarcoding6) across 46 proglacial landscapes worldwide, we found that all the environmental properties change with time since glaciers retreated, and that temperature modulates the accumulation of soil nutrients. The richness of bacteria, fungi, plants and animals increases with time since deglaciation, but their temporal patterns differ. Microorganisms colonized most rapidly in the first decades after glacier retreat, whereas most macroorganisms took longer. Increased habitat suitability, growing complexity of biotic interactions and temporal colonization all contribute to the increase in biodiversity over time. These processes also modify community composition for all the groups of organisms. Plant communities show positive links with all other biodiversity components and have a key role in ecosystem development. These unifying patterns provide new insights into the early dynamics of deglaciated terrains and highlight the need for integrated surveillance of their multiple environmental properties5.

Published
2024

2. The retreat of mountain glaciers since the little ice age: A spatially explicit database

Author

Marta, S, Azzoni, R, Fugazza, D, Tielidze, L, Chand, P, Sieron, K, Almond, P, Ambrosini, R, Anthelme, F, Alviz Gazitua, P, Bhambri, R, Bonin, A, Caccianiga, M, Cauvy-Fraunie, S, Lievano, J, Clague, J, Rapre, J, Dangles, O, Deline, P, Eger, A, Encarnacion, R, Erokhin, S, Franzetti, A, Gielly, L, Gili, F, Gobbi, M, Guerrieri, A, Hagvar, S, Khedim, N, Kinyanjui, R, Messager, E, Morales-Martinez, M, Peyre, G, Pittino, F, Poulenard, J, Seppi, R, Sharma, M, Urseitova, N, Weissling, B, Yang, Y, Zaginaev, V, Zimmer, A, Diolaiuti, G, Rabatel, A, Ficetola, G, Marta S., Azzoni R. S., Fugazza D., Tielidze L., Chand P., Sieron K., Almond P., Ambrosini R., Anthelme F., Alviz Gazitua P., Bhambri R., Bonin A., Caccianiga M., Cauvy-Fraunie S., Lievano J. L. C., Clague J., Rapre J. A. C., Dangles O., Deline P., Eger A., Encarnacion R. C., Erokhin S., Franzetti A., Gielly L., Gili F., Gobbi M., Guerrieri A., Hagvar S., Khedim N., Kinyanjui R., Messager E., Morales-Martinez M. A., Peyre G., Pittino F., Poulenard J., Seppi R., Sharma M. C., Urseitova N., Weissling B., Yang Y., Zaginaev V., Zimmer A., Diolaiuti G. A., Rabatel A., Ficetola G. F., Marta, S, Azzoni, R, Fugazza, D, Tielidze, L, Chand, P, Sieron, K, Almond, P, Ambrosini, R, Anthelme, F, Alviz Gazitua, P, Bhambri, R, Bonin, A, Caccianiga, M, Cauvy-Fraunie, S, Lievano, J, Clague, J, Rapre, J, Dangles, O, Deline, P, Eger, A, Encarnacion, R, Erokhin, S, Franzetti, A, Gielly, L, Gili, F, Gobbi, M, Guerrieri, A, Hagvar, S, Khedim, N, Kinyanjui, R, Messager, E, Morales-Martinez, M, Peyre, G, Pittino, F, Poulenard, J, Seppi, R, Sharma, M, Urseitova, N, Weissling, B, Yang, Y, Zaginaev, V, Zimmer, A, Diolaiuti, G, Rabatel, A, Ficetola, G, Marta S., Azzoni R. S., Fugazza D., Tielidze L., Chand P., Sieron K., Almond P., Ambrosini R., Anthelme F., Alviz Gazitua P., Bhambri R., Bonin A., Caccianiga M., Cauvy-Fraunie S., Lievano J. L. C., Clague J., Rapre J. A. C., Dangles O., Deline P., Eger A., Encarnacion R. C., Erokhin S., Franzetti A., Gielly L., Gili F., Gobbi M., Guerrieri A., Hagvar S., Khedim N., Kinyanjui R., Messager E., Morales-Martinez M. A., Peyre G., Pittino F., Poulenard J., Seppi R., Sharma M. C., Urseitova N., Weissling B., Yang Y., Zaginaev V., Zimmer A., Diolaiuti G. A., Rabatel A., and Ficetola G. F.

Abstract

Most of the world’s mountain glaciers have been retreating for more than a century in response to climate change. Glacier retreat is evident on all continents, and the rate of retreat has accelerated during recent decades. Accurate, spatially explicit information on the position of glacier margins over time is useful for analyzing patterns of glacier retreat and measuring reductions in glacier surface area. This information is also essential for evaluating how mountain ecosystems are evolving due to climate warming and the attendant glacier retreat. Here, we present a non-comprehensive spatially explicit dataset showing multiple positions of glacier fronts since the Little Ice Age (LIA) maxima, including many data from the pre-satellite era. The dataset is based on multiple historical archival records including topographical maps; repeated photographs, paintings, and aerial or satellite images with a supplement of geochronology; and own field data. We provide ESRI shapefiles showing 728 past positions of 94 glacier fronts from all continents, except Antarctica, covering the period between the Little Ice Age maxima and the present. On average, the time series span the past 190 years. From 2 to 46 past positions per glacier are depicted (on average: 7.8).

Published
2021

3. Topsoil organic matter build-up in glacier forelands around the world

Author

Khedim, N, Cecillon, L, Poulenard, J, Barre, P, Baudin, F, Marta, S, Rabatel, A, Dentant, C, Cauvy-Fraunie, S, Anthelme, F, Gielly, L, Ambrosini, R, Franzetti, A, Azzoni, R, Caccianiga, M, Compostella, C, Clague, J, Tielidze, L, Messager, E, Choler, P, Ficetola, G, Khedim N., Cecillon L., Poulenard J., Barre P., Baudin F., Marta S., Rabatel A., Dentant C., Cauvy-Fraunie S., Anthelme F., Gielly L., Ambrosini R., Franzetti A., Azzoni R. S., Caccianiga M. S., Compostella C., Clague J., Tielidze L., Messager E., Choler P., Ficetola G. F., Khedim, N, Cecillon, L, Poulenard, J, Barre, P, Baudin, F, Marta, S, Rabatel, A, Dentant, C, Cauvy-Fraunie, S, Anthelme, F, Gielly, L, Ambrosini, R, Franzetti, A, Azzoni, R, Caccianiga, M, Compostella, C, Clague, J, Tielidze, L, Messager, E, Choler, P, Ficetola, G, Khedim N., Cecillon L., Poulenard J., Barre P., Baudin F., Marta S., Rabatel A., Dentant C., Cauvy-Fraunie S., Anthelme F., Gielly L., Ambrosini R., Franzetti A., Azzoni R. S., Caccianiga M. S., Compostella C., Clague J., Tielidze L., Messager E., Choler P., and Ficetola G. F.

Abstract

Since the last glacial maximum, soil formation related to ice-cover shrinkage has been one major sink of carbon accumulating as soil organic matter (SOM), a phenomenon accelerated by the ongoing global warming. In recently deglacierized forelands, processes of SOM accumulation, including those that control carbon and nitrogen sequestration rates and biogeochemical stability of newly sequestered carbon, remain poorly understood. Here, we investigate the build-up of SOM during the initial stages (up to 410 years) of topsoil development in 10 glacier forelands distributed on four continents. We test whether the net accumulation of SOM on glacier forelands (i) depends on the time since deglacierization and local climatic conditions (temperature and precipitation); (ii) is accompanied by a decrease in its stability and (iii) is mostly due to an increasing contribution of organic matter from plant origin. We measured total SOM concentration (carbon, nitrogen), its relative hydrogen/oxygen enrichment, stable isotopic (13C, 15N) and carbon functional groups (C-H, C=O, C=C) compositions, and its distribution in carbon pools of different thermal stability. We show that SOM content increases with time and is faster on forelands experiencing warmer climates. The build-up of SOM pools shows consistent trends across the studied soil chronosequences. During the first decades of soil development, the low amount of SOM is dominated by a thermally stable carbon pool with a small and highly thermolabile pool. The stability of SOM decreases with soil age at all sites, indicating that SOM storage is dominated by the accumulation of labile SOM during the first centuries of soil development, and suggesting plant carbon inputs to soil (SOM depleted in nitrogen, enriched in hydrogen and in aromatic carbon). Our findings highlight the potential vulnerability of SOM stocks from proglacial areas to decomposition and suggest that their durability largely depends on the relative contributio

Published
2021

4. Historically unprecedented global glacier decline in the early 21st century

Author

Ahlström, A. P., Anderson, B., Arenillas, M., Bajracharya, S., Baroni, C., Bidlake, W. R., Braun, L. N., Caceres, B., Casassa, G., Ceballos, J. L., Cobos, G., Davila, L. R., Delgado Granados, H., Demberel, O., Demuth, M. N., Espizua, L., Fischer, A., Fujita, K., Gadek, B., Ghazanfar, A., Hagen, J. O., Hoelzle, M., Holmlund, Per, Karimi, N., Li, Z., Martinez De Pison, E., Pelto, M., Pitte, P., Popovnin, V. V., Portocarrero, C. A., Prinz, R., Ramirez, J., Rudell, A., Sangewar, C., Severskiy, I, Sigurdsson, O., Soruco, A., Tielidze, L., Usubaliev, R., Van Ommen, T., Vincent, C., Yakovlev, A., Ahlström, A. P., Anderson, B., Arenillas, M., Bajracharya, S., Baroni, C., Bidlake, W. R., Braun, L. N., Caceres, B., Casassa, G., Ceballos, J. L., Cobos, G., Davila, L. R., Delgado Granados, H., Demberel, O., Demuth, M. N., Espizua, L., Fischer, A., Fujita, K., Gadek, B., Ghazanfar, A., Hagen, J. O., Hoelzle, M., Holmlund, Per, Karimi, N., Li, Z., Martinez De Pison, E., Pelto, M., Pitte, P., Popovnin, V. V., Portocarrero, C. A., Prinz, R., Ramirez, J., Rudell, A., Sangewar, C., Severskiy, I, Sigurdsson, O., Soruco, A., Tielidze, L., Usubaliev, R., Van Ommen, T., Vincent, C., and Yakovlev, A.

Abstract

Observations show that glaciers around the world are in retreat and losing mass. Internationally coordinated for over a century, glacier monitoring activities provide an unprecedented dataset of glacier observations from ground, air and space. Glacier studies generally select specific parts of these datasets to obtain optimal assessments of the mass-balance data relating to the impact that glaciers exercise on global sea-level fluctuations or on regional runoff. In this study we provide an overview and analysis of the main observational datasets compiled by the World Glacier Monitoring Service (WGMS). The dataset on glacier front variations (similar to 42 000 since 1600) delivers clear evidence that centennial glacier retreat is a global phenomenon. Intermittent readvance periods at regional and decadal scale are normally restricted to a subsample of glaciers and have not come close to achieving the maximum positions of the Little Ice Age (or Holocene). Glaciological and geodetic observations (similar to 5200 since 1850) show that the rates of early 21st-century mass loss are without precedent on a global scale, at least for the time period observed and probably also for recorded history, as indicated also in reconstructions from written and illustrated documents. This strong imbalance implies that glaciers in many regions will very likely suffer further ice loss, even if climate remains stable.

Published
2015
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