Publications in top journals for two PhD students of IBED

18 February 2011

Thimo Klotzbücher and Marino Marinković, PhD students of the Institute for Biodiversity and Ecosystem Dynamics (IBED), both published an article in a journal designated as ‘top journal’ by the Faculty of Science of the University of Amsterdam.

Thimo Klotzbücher and Marino Marinković, PhD students of the Institute for Biodiversity and Ecosystem Dynamics (IBED), both published an article in a journal designated as ‘top journal’ by the Faculty of Science of the University of Amsterdam.

Lignin degradation

Thimo Klotzbücher works as PhD student at the Earth Surface Science (ESS) research group of IBED. He is first author of ‘A new conceptual model for the fate of lignin in decomposing plant litter’ accepted for publication in Ecology. Together with international partners he investigated the relationships between lignin degradation and the production of dissolved organic carbon and CO2 during litter decomposition of needle or leaf litter from 5 different tree species. Their results challenge the traditional view regarding the fate and role of lignin during litter decomposition. In contrast to the prevailing theory, they conclude that lignin degradation is controlled by the availability of easily decomposable carbon sources. Consequently, it occurs particularly in the initial phase of litter decomposition and is hampered at later stages if easily decomposable resources decline.

Publication information:
Thimo Klotzbücher, Klaus Kaiser, Georg Guggenberger, Christiane Gatzek, and Karsten Kalbitz. In press. A new conceptual model for the fate of lignin in decomposing plant litter. Ecology. [doi:10.1890/10-1307.1]

Toxicity of metals and a PAH

Marino Marinković works as PhD student at the Aquatic Ecology and Ecotoxicology (AEE) research group of IBED. He is first author of ‘Life Cycle Responses of the Midge Chironomus riparius to Compounds with Different Modes of Action’ that appeared in last month’s edition of Environmental Science & Technology. Together with partners from several other Dutch institutes he investigated the impact of four chemicals with different modes of action on chronic lethal and sublethal life-cycle effect parameters of the nonbiting midge Chironomus riparius. The compounds included the essential metal copper, the nonessential metal cadmium, the organometal tributyltin, and the polycyclic aromatic hydrocarbon (PAH) phenanthrene. They propose the chronic LC50/LOECEmT50 ratio as an alternative means to determine the specificity of a compound's mode of action that is less variable than the traditional acute-to-chronic ratios (ACR).

Publication information:
Marino Marinković, Rudo A. Verweij, Grietje A. Nummerdor, Martijs J. Jonker and Michiel H. S. Kraak. (2011). Life Cycle Responses of the Midge Chironomus riparius to Compounds with Different Modes of Action. Environmental Science & Technology, 45, 1645-1651. [doi: 10.1021/es102904y]

Published by  IBED