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Auteur Gesa A. Weyhenmeyer |
Documents disponibles écrits par cet auteur (4)
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Titre : Ecology under lake ice Type de document : Imprimé Auteurs : Stephanie E. Hampton ; Aaron W. E. Galloway ; Stephen M. Powers ; Ted Ozersky ; Kara H. Woo ; Ryan D. Batt ; Stephanie G. Labou ; Catherine M. O'Reilly ; Sapna Sharma ; Noah R. Lottig ; Emily H. Stanley ; Rebecca L. North ; Jason D. Stockwell ; Rita Adrian ; Gesa A. Weyhenmeyer ; Lauri Arvola ; Helen M. Baulch ; Isabella Bertani ; Larry L., Jr Bowman ; Cayelan C. Carey ; Jordi Catalán ; William Colom-Montero ; Leah M. Domine ; Marisol Felip ; Ignacio Granados ; Corinna Gries ; Hans-Peter Grossart ; Juta Haberman ; Marina Haldna ; Brian Hayden ; Scott N. Higgins ; Jeff C. Jolley ; Kimmo K. Kahilainen ; Enn Kaup ; Michael J. Kehoe ; Sally MacIntyre ; Anson W. Mackay ; Heather L. Mariash ; Robert M. McKay ; Brigitte Nixdorf ; Tiina Nõges ; Michelle Palmer ; Don C. Pierson ; David M. Post ; Matthew J. Pruett ; Milla Rautio ; Jordan S. Read ; Sarah L. Roberts ; Jacqueline Rücker ; Steven A. Sadro ; Eugene A. Silow ; Derek E. Smith ; Robert W. Sterner ; George E. A. Swann ; Maxim A. Timofeyev ; Manuel Toro ; Michael R. Twiss ; Richard J. Vogt ; Erika J. Whiteford ; Marguerite A. Xenopoulos Année de publication : 2017 Article en page(s) : 98-111 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Enjeux de conservation des lacs d'altitude Résumé : Winter conditions are rapidly changing in temperate ecosystems, particularly for those that experience periods of snow and ice cover. Relatively little is known of winter ecology in these systems, due to a historical research focus on summer ‘growing seasons’. We executed the first global quantitative synthesis on under-ice lake ecology, including 36 abiotic and biotic variables from 42 research groups and 101 lakes, examining seasonal differences and connections as well as how seasonal differences vary with geophysical factors. Plankton were more abundant under ice than expected; mean winter values were 43.2% of summer values for chlorophyll a, 15.8% of summer phytoplankton biovolume and 25.3% of summer zooplankton density. Dissolved nitrogen concentrations were typically higher during winter, and these differences were exaggerated in smaller lakes. Lake size also influenced winter-summer patterns for dissolved organic carbon (DOC), with higher winter DOC in smaller lakes. At coarse levels of taxonomic aggregation, phytoplankton and zooplankton community composition showed few systematic differences between seasons, although literature suggests that seasonal differences are frequently lake-specific, species-specific, or occur at the level of functional group. Within the subset of lakes that had longer time series, winter influenced the subsequent summer for some nutrient variables and zooplankton biomass. Lien pérenne : DOI : 10.1111/ele.12699 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=150982
in Ecology Letters > 20 (2017) . - 98-111Hampton, Stephanie E., Galloway, Aaron W. E., Powers, Stephen M., Ozersky, Ted, Woo, Kara H., Batt, Ryan D., Labou, Stephanie G., O'Reilly, Catherine M., Sharma, Sapna, Lottig, Noah R., Stanley, Emily H., North, Rebecca L., Stockwell, Jason D., Adrian, Rita, Weyhenmeyer, Gesa A., Arvola, Lauri, Baulch, Helen M., Bertani, Isabella, Bowman, Larry L., Jr, Carey, Cayelan C., Catalán, Jordi, Colom-Montero, William, Domine, Leah M., Felip, Marisol, Granados, Ignacio, Gries, Corinna, Grossart, Hans-Peter, Haberman, Juta, Haldna, Marina, Hayden, Brian, Higgins, Scott N., Jolley, Jeff C., Kahilainen, Kimmo K., Kaup, Enn, Kehoe, Michael J., MacIntyre, Sally, Mackay, Anson W., Mariash, Heather L., McKay, Robert M., Nixdorf, Brigitte, Nõges, Tiina, Palmer, Michelle, Pierson, Don C., Post, David M., Pruett, Matthew J., Rautio, Milla, Read, Jordan S., Roberts, Sarah L., Rücker, Jacqueline, Sadro, Steven A., Silow, Eugene A., Smith, Derek E., Sterner, Robert W., Swann, George E. A., Timofeyev, Maxim A., Toro, Manuel, Twiss, Michael R., Vogt, Richard J., Whiteford, Erika J., Xenopoulos, Marguerite A. 2017 Ecology under lake ice. Ecology Letters, 20: 98-111.Documents numériques
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Article (2017)URLLakes and reservoirs as regulators of carbon cycling and climate / Lars J. Tranvik in Limnology and oceanography, 54 (6-2) (November 2009)
Titre : Lakes and reservoirs as regulators of carbon cycling and climate Type de document : Imprimé Auteurs : Lars J. Tranvik ; John A. Downing ; James B. Cotner ; Steven A. Loiselle ; Robert G. Striegl ; Thomas J. Ballatore ; Peter Dillon ; Kerri Finlay ; Kenneth Fortino ; Lesley B. Knoll ; Pirkko L. Kortelainen ; Tiit Kuster ; Soren Larsen ; Isabelle Laurion ; Dina M. Leech ; S. Leigh McCallister ; Diane M. McKnight ; John Michael Melack ; Erin Overholt ; Jason A. Porter ; Yves Prairie ; William H. Renwick ; Fabio Roland ; Bradford Sherman ; David W. Schindler (1940-2021) ; Sebastian Sobek ; Alain Tremblay ; Michael J. Vanni ; Antonie M. Verschoor ; Eddie (von) Wachenfelt ; Gesa A. Weyhenmeyer Année de publication : 2009 Article en page(s) : 2298-2314 Langues : Anglais (eng) Catégories : [LOTERRE-Biodiversité] Changement climatique
[CBNPMP-Thématique] Lac d'altitudeRésumé : We explore the role of lakes in carbon cycling and global climate, examine the mechanisms influencing carbon pools and transformations in lakes, and discuss how the metabolism of carbon in the inland waters is likely to change in response to climate. Furthermore, we project changes as global climate change in the abundance and spatial distribution of lakes in the biosphere, and we revise the estimate for the global extent of carbon transformation in inland waters. This synthesis demonstrates that the global annual emissions of carbon dioxide from inland waters to the atmosphere are similar in magnitude to the carbon dioxide uptake by the oceans and that the global burial of organic carbon in inland water sediments exceeds organic carbon sequestration on the ocean floor. The role of inland waters in global carbon cycling and climate forcing may be changed by human activities, including construction of impoundments, which accumulate large amounts of carbon in sediments and emit large amounts of methane to the atmosphere. Methane emissions are also expected from lakes on melting permafrost. The synthesis presented here indicates that (1) inland waters constitute a significant component of the global carbon cycle, (2) their contribution to this cycle has significantly changed as a result of human activities, and (3) they will continue to change in response to future climate change causing decreased as well as increased abundance of lakes as well as increases in the number of aquatic impoundments. Lien pérenne : DOI : 10.4319/lo.2009.54.6_part_2.2298 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=152304
in Limnology and oceanography > 54 (6-2) (November 2009) . - 2298-2314Tranvik, Lars J., Downing, John A., Cotner, James B., Loiselle, Steven A., Striegl, Robert G., Ballatore, Thomas J., Dillon, Peter, Finlay, Kerri, Fortino, Kenneth, Knoll, Lesley B., Kortelainen, Pirkko L., Kuster, Tiit, Larsen, Soren, Laurion, Isabelle, Leech, Dina M., Leigh McCallister, S., McKnight, Diane M., Melack, John Michael, Overholt, Erin, Porter, Jason A., Prairie, Yves, Renwick, William H., Roland, Fabio, Sherman, Bradford, Schindler, David W. (1940-2021), Sobek, Sebastian, Tremblay, Alain, Vanni, Michael J., Verschoor, Antonie M., Wachenfelt, Eddie (von), Weyhenmeyer, Gesa A. 2009 Lakes and reservoirs as regulators of carbon cycling and climate. Limnology and oceanography, 54(6-2): 2298-2314.Documents numériques
Article (2009)URL
Titre : Lakes as sentinels of climate change Type de document : Imprimé Auteurs : Rita Adrian ; Catherine M. O'Reilly ; Horacio Zagarese ; Stephen B. Baines ; Dag O. Hessen ; Wendel Keller ; David M. Livingstone ; Ruben Sommaruga ; Dietmar Straile ; Ellen Van Donk ; Gesa A. Weyhenmeyer ; Monika Winder Année de publication : 2009 Article en page(s) : 2283-2297 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Enjeux de conservation des lacs d'altitude
[LOTERRE-Biodiversité] Changement climatiqueRésumé : While there is a general sense that lakes can act as sentinels of climate change, their efficacy has not been thoroughly analyzed. We identified the key response variables within a lake that act as indicators of the effects of climate change on both the lake and the catchment. These variables reflect a wide range of physical, chemical, and biological responses to climate. However, the efficacy of the different indicators is affected by regional response to climate change, characteristics of the catchment, and lake mixing regimes. Thus, particular indicators or combinations of indicators are more effective for different lake types and geographic regions. The extraction of climate signals can be further complicated by the influence of other environmental changes, such as eutrophication or acidification, and the equivalent reverse phenomena, in addition to other land-use influences. In many cases, however, confounding factors can be addressed through analytical tools such as detrending or filtering. Lakes are effective sentinels for climate change because they are sensitive to climate, respond rapidly to change, and integrate information about changes in the catchment. Lien pérenne : DOI : 10.4319/lo.2009.54.6_part_2.2283 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=147804
in Limnology and oceanography > 54 (6-2) (November 2009) . - 2283-2297Adrian, Rita, O'Reilly, Catherine M., Zagarese, Horacio, Baines, Stephen B., Hessen, Dag O., Keller, Wendel, Livingstone, David M., Sommaruga, Ruben, Straile, Dietmar, Van Donk, Ellen, Weyhenmeyer, Gesa A., Winder, Monika 2009 Lakes as sentinels of climate change. Limnology and oceanography, 54(6-2): 2283-2297.Documents numériques
Article (2009)URL
Titre : Scientists’ warning to humanity: rapid degradation of the world’s large lakes Type de document : Imprimé Auteurs : Jean-Philippe Jenny ; Orlane Anneville ; Fabien Arnaud ; Yoann Baulaz ; Damien Bouffard ; Isabelle Domaizon ; Serghei A. Bocaniov ; Nathalie Chèvre ; Maria Dittrich ; Jean-Marcel Dorioz ; Erin S. Dunlop ; Gaël Dur ; Jean Guillard ; Thibault Guinaldo ; Stéphan Jacquet ; Aurélien Jamoneau ; Zobia Jawed ; Erik Jeppesen ; Gail Krantzberg ; John D. Lenters ; Barbara Leoni ; Michel Meybeck ; Veronica Nava ; Tiina Nõges ; Peeter Nõges ; Martina Patelli ; Victoria Pebbles ; Marie-Elodie Perga ; Serena Rasconi ; Carl R. Ruetz ; Lars Rudstam ; Nico Salmaso ; Sharma Sapna ; Dietmar Straile ; Olga Tammeorg ; Michael R. Twiss ; Donald G. Uzarski ; Anne-Mari Ventelä ; Vincent Warwick F. ; Steven W. Wilhelm ; Sten-Ake Wängberg ; Gesa A. Weyhenmeyer Année de publication : 2020 Article en page(s) : 686-702 Catégories : [LOTERRE-Biodiversité] Changement climatique
[CBNPMP-Thématique] Conservation et gestion de l'eau
[CBNPMP-Thématique] Enjeux de conservation des lacs d'altitude
[CBNPMP-Thématique] L'eau dans l'écosystèmeRésumé : Large lakes of the world are habitats for diverse species, including endemic taxa, and are valuable resources that provide humanity with many ecosystem services. They are also sentinels of global and local change, and recent studies in limnology and paleolimnology have demonstrated disturbing evidence of their collective degradation in terms of depletion of resources (water and food), rapid warming and loss of ice, destruction of habitats and ecosystems, loss of species, and accelerating pollution. Large lakes are particularly exposed to anthropogenic and climatic stressors. The Second Warning to Humanity provides a framework to assess the dangers now threatening the world’s large lake ecosystems and to evaluate pathways of sustainable development that are more respectful of their ongoing provision of services. Here we review current and emerging threats to the large lakes of the world, including iconic examples of lake management failures and successes, from which we identify priorities and approaches for future conservation efforts. The review underscores the extent of lake resource degradation, which is a result of cumulative perturbation through time by long-term human impacts combined with other emerging stressors. Decades of degradation of large lakes have resulted in major challenges for restoration and management and a legacy of ecological and economic costs for future generations. Large lakes will require more intense conservation efforts in a warmer, increasingly populated world to achieve sustainable, high-quality waters. This Warning to Humanity is also an opportunity to highlight the value of a long-term lake observatory network to monitor and report on environmental changes in large lake ecosystems. Lien pérenne : DOI : 10.1016/j.jglr.2020.05.006 / HAL : hal-02746258
Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=152168
in Journal of great lakes research > 46 (4) (August 2020) . - 686-702Jenny, Jean-Philippe, Anneville, Orlane, Arnaud, Fabien, Baulaz, Yoann, Bouffard, Damien, Domaizon, Isabelle, Bocaniov, Serghei A., Chèvre, Nathalie, Dittrich, Maria, Dorioz, Jean-Marcel, Dunlop, Erin S., Dur, Gaël, Guillard, Jean, Guinaldo, Thibault, Jacquet, Stéphan, Jamoneau, Aurélien, Jawed, Zobia, Jeppesen, Erik, Krantzberg, Gail, Lenters, John D., Leoni, Barbara, Meybeck, Michel, Nava, Veronica, Nõges, Tiina, Nõges, Peeter, Patelli, Martina, Pebbles, Victoria, Perga, Marie-Elodie, Rasconi, Serena, Ruetz, Carl R., Rudstam, Lars, Salmaso, Nico, Sapna, Sharma, Straile, Dietmar, Tammeorg, Olga, Twiss, Michael R., Uzarski, Donald G., Ventelä, Anne-Mari, Warwick F., Vincent, Wilhelm, Steven W., Wängberg, Sten-Ake, Weyhenmeyer, Gesa A. 2020 Scientists’ warning to humanity: rapid degradation of the world’s large lakes. Journal of great lakes research, 46(4): 686-702.Documents numériques
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Article (2020)URL
