TY  - JOUR
A1  - Thuiller, Wilfried
A1  - Muenkemueller, Tamara
A1  - Schiffers, Katja H.
A1  - Georges, Damien
A1  - Dullinger, Stefan
A1  - Eckhart, Vincent M.
A1  - Edwards, Thomas C.
A1  - Gravel, Dominique
A1  - Kunstler, Georges
A1  - Merow, Cory
A1  - Moore, Kara
A1  - Piedallu, Christian
A1  - Vissault, Steve
A1  - Zimmermann, Niklaus E.
A1  - Zurell, Damaris
A1  - Schurr, Frank Martin
T1  - Does probability of occurrence relate to population dynamics?
JF  - Ecography : pattern and diversity in ecology ; research papers forum
N2  - Interestingly, relationships between demographic parameters and occurrence probability did not vary substantially across degrees of shade tolerance and regions. Although they were influenced by the uncertainty in the estimation of the demographic parameters, we found that r was generally negatively correlated with P-occ, while N, and for most regions K, was generally positively correlated with P-occ. Thus, in temperate forest trees the regions of highest occurrence probability are those with high densities but slow intrinsic population growth rates. The uncertain relationships between demography and occurrence probability suggests caution when linking species distribution and demographic models.
Y1  - 2014
U6  - https://doi.org/10.1111/ecog.00836
SN  - 0906-7590
SN  - 1600-0587
VL  - 37
IS  - 12
SP  - 1155
EP  - 1166
PB  - Wiley-Blackwell
CY  - Hoboken
ER  - 
TY  - GEN
A1  - des Aulnois, Maxime Georges
A1  - Réveillon, Damien
A1  - Robert, Elise
A1  - Caruana, Amandine
A1  - Briand, Enora
A1  - Guljamow, Arthur
A1  - Dittmann, Elke
A1  - Amzil, Zouher
A1  - Bormans, Myriam
T1  - Salt shock responses of Microcystis revealed through physiological, transcript, and metabolomic analyses
T2  - Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe
N2  - The transfer of Microcystis aeruginosa from freshwater to estuaries has been described worldwide and salinity is reported as the main factor controlling the expansion of M. aeruginosa to coastal environments. Analyzing the expression levels of targeted genes and employing both targeted and non-targeted metabolomic approaches, this study investigated the effect of a sudden salt increase on the physiological and metabolic responses of two toxic M. aeruginosa strains separately isolated from fresh and brackish waters, respectively, PCC 7820 and 7806. Supported by differences in gene expressions and metabolic profiles, salt tolerance was found to be strain specific. An increase in salinity decreased the growth of M. aeruginosa with a lesser impact on the brackish strain. The production of intracellular microcystin variants in response to salt stress correlated well to the growth rate for both strains. Furthermore, the release of microcystins into the surrounding medium only occurred at the highest salinity treatment when cell lysis occurred. This study suggests that the physiological responses of M. aeruginosa involve the accumulation of common metabolites but that the intraspecific salt tolerance is based on the accumulation of specific metabolites. While one of these was determined to be sucrose, many others remain to be identified. Taken together, these results provide evidence that M. aeruginosa is relatively salt tolerant in the mesohaline zone and microcystin (MC) release only occurs when the capacity of the cells to deal with salt increase is exceeded.
T3  - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 1130 
KW  - Microcystis aeruginosa
KW  - microcystin
KW  - salt stress
KW  - metabolomic
KW  - transcript
Y1  - 2020
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-472405
SN  - 1866-8372
IS  - 1130
ER  - 
TY  - JOUR
A1  - des Aulnois, Maxime Georges
A1  - Réveillon, Damien
A1  - Robert, Elise
A1  - Caruana, Amandine
A1  - Briand, Enora
A1  - Guljamow, Arthur
A1  - Dittmann, Elke
A1  - Amzil, Zouher
A1  - Bormans, Myriam
T1  - Salt shock responses of Microcystis revealed through physiological, transcript, and metabolomic analyses
JF  - Toxins
N2  - The transfer of Microcystis aeruginosa from freshwater to estuaries has been described worldwide and salinity is reported as the main factor controlling the expansion of M. aeruginosa to coastal environments. Analyzing the expression levels of targeted genes and employing both targeted and non-targeted metabolomic approaches, this study investigated the effect of a sudden salt increase on the physiological and metabolic responses of two toxic M. aeruginosa strains separately isolated from fresh and brackish waters, respectively, PCC 7820 and 7806. Supported by differences in gene expressions and metabolic profiles, salt tolerance was found to be strain specific. An increase in salinity decreased the growth of M. aeruginosa with a lesser impact on the brackish strain. The production of intracellular microcystin variants in response to salt stress correlated well to the growth rate for both strains. Furthermore, the release of microcystins into the surrounding medium only occurred at the highest salinity treatment when cell lysis occurred. This study suggests that the physiological responses of M. aeruginosa involve the accumulation of common metabolites but that the intraspecific salt tolerance is based on the accumulation of specific metabolites. While one of these was determined to be sucrose, many others remain to be identified. Taken together, these results provide evidence that M. aeruginosa is relatively salt tolerant in the mesohaline zone and microcystin (MC) release only occurs when the capacity of the cells to deal with salt increase is exceeded.
KW  - Microcystis aeruginosa
KW  - microcystin
KW  - salt stress
KW  - metabolomic
KW  - transcript
Y1  - 2020
U6  - https://doi.org/10.3390/toxins12030192
SN  - 2072-6651
VL  - 12
IS  - 3
PB  - MDPI
CY  - Basel
ER  -