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Browsing Gwyddorau Biolegol, Amgylcheddol a Gwledig / Biological, Environmental & Rural Sciences by Author

Browsing Gwyddorau Biolegol, Amgylcheddol a Gwledig / Biological, Environmental & Rural Sciences by Author "Anesio, Alexandre M."

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A distinctive fungal community inhabiting cryoconite holes on glaciers in Svalbard

Edwards, Arwyn; Douglas, Brian; Anesio, Alexandre M.; Rassner, Sara M.; Irvine-fynn, Tristram D.l.; Sattler, Birgit; Griffith, Gareth W. (2012-12-01)

Cryoconite holes on glacier surfaces are ice-cold hot spots of microbial diversity and activity but still little is known about their fungal inhabitants. We provide the first report of distinctive fungal communities in ...
Effect of humic substance photodegradation on bacterial growth and respiration in lake water

Aiken, G. R.; Kieber, D. J.; Anesio, Alexandre M.; Mopper, K.; Graneli, W. (2005)

This study addresses how humic substance (HS) chemical composition and photoreactivity affect bacterial growth, respiration, and growth efficiency (BGE) in lake water. Aqueous solutions of HSs from diverse aquatic environments ...
Eutrophication processes and trophic interactions in a shallow estuary: prelinimary results based on stable isotope analysis (delta13C and delta15N)

Costa, C. S. B.; Bemvenuti, C.; Odebrecht, C.; Abreu, P. C.; Graneli, W.; Anesio, Alexandre M. (2006-04)

Stable isotopes ratios (δ13C and δ15N) were measured in primary producers and consumers of two bays with contrasting eutrophic conditions in the Patos Lagoon estuary, southern Brazil: the Justino bay, a more pristine ...
Hydrogen peroxide distribution, production, and decay in boreal lakes

Graneli, W.; Hakkinen, P. J.; Anesio, Alexandre M. (2004-08)

The distribution, production, and decay of hydrogen peroxide (H2O2) were studied in 10 boreal lakes of differing physical–chemical characteristics. Diurnal and vertical fluctuations in H2O2 concentration were followed in ...
Microbial food webs in the dark: independence of Lake Plankton from recent algal production

Graneli, W.; Gutseit, K.; Anesio, Alexandre M.; Daniel, C. (2005-02-09)

We investigated the development of a heterotrophic plankton food web with or without phytoplankton primary production in a long-term (>1 yr) laboratory experiment. Water from 3 Swedish lakes (humic, oligotrophic clearwater, ...
Possible interactions between bacterial diversity, microbial activity and supraglacial hydrology of cryoconite holes in Svalbard

Edwards, Arwyn; Anesio, Alexandre M.; Rassner, Sara M.; Sattler, Birgit; Hubbard, Bryn; Perkins, William T.; Young, Michael; Griffith, Gareth W. (2011-01-01)

The diversity of highly active bacterial communities in cryoconite holes on three Arctic glaciers in Svalbard was investigated using terminal restriction fragment length polymorphism (T-RFLP) of the 16S rRNA locus. ...
Stimulation of metazooplankton by photochemically modified dissolved organic matter

Anesio, Alexandre M.; Daniel, C.; Graneli, W.; Kritzberg, E. S. (2006)

We examined the response of bacteria and proto- and metazooplankton to photomodified dissolved organic matter (DOM). Sterile filtered water from a eutrophic and a humic lake, that was either exposed to artificial ultraviolet ...

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