Catalogus

Zoeken

Zoeken kan via de modus 'eenvoudig zoeken' (één veld) of uitgebreid via 'geavanceerd zoeken' (meerdere velden). Zo kan je bv. zoeken op een combinatie van een auteursnaam (auteur), een jaartal (jaar) en een documenttype.

Boekenmand

Nuttige resultaten kan je aanvinken en toevoegen aan een mandje. De inhoud hiervan kan je exporteren of afdrukken (naar bv. PDF).

RSS

Op de hoogte blijven van nieuw toegevoegde publicaties binnen uw interessegebied? Dit kan door een RSS-feed (?) te maken van jouw zoekopdracht.

log in

Publicaties | Kaarten

nieuwe zoekopdracht

[ meld een fout in dit record ]

mandje (0): toevoegen | toon

---

Heterotrophic capability of a metalimnetic plankton population in saline Lake Shira (Siberia, Khakasia) Quesada, A.; Jüttner, F.; Zotina, T.A.; Tolomeyev, A.P.; Degermendzhy, A.G. (2002). Heterotrophic capability of a metalimnetic plankton population in saline Lake Shira (Siberia, Khakasia). Aquat. Ecol. 36(2): 219-227 In: Aquatic Ecology. Springer: Dordrecht; London; Boston. ISSN 1386-2588; e-ISSN 1573-5125, meer

---

Beschikbaar in	Auteurs
VLIZ [ aanvragen ]

---

Trefwoorden

Aquatic communities > Plankton Aquatic communities > Plankton > Nannoplankton Aquatic communities > Plankton > Phytoplankton Chemical compounds > Organic compounds PNE, Russia, Siberia Population characteristics > Population density Cyanobacteria [WoRMS]

---

Auteurs		Top
Quesada, A. Jüttner, F. Zotina, T.A.	Tolomeyev, A.P. Degermendzhy, A.G.

---

Abstract

The heterotrophic potential of a deep (12 m) phytoplankton community layer in Lake Shira (Siberia), dominated by several taxa of cyanobacteria (Aphanocapsa, Lyngbya contorta, and other unidentified species) was investigated. The plankton community was fractionated by size, allowing separation between the bacterioplankton and the phytoplankton, and 13C-labelled organic compounds were used as tracers. The uptake of 13C-labelled glucose and of 13C-labelled glycine was maximal in the bacterioplankton-enriched fraction (δ13C = 557 and 323, respectively), but was also high in the cyanobacterial fraction (δ13C=138 and 80, respectively). An inverse relationship between the uptake of organic compounds and the light intensity when the whole community was exposed to different irradiances was also investigated. These results suggest that the photosynthetic microorganisms from the investigated community are able to assimilate organic compounds and thus supplement their carbon and energy requirements. This heterotrophic capability appears to be favoured by the high in situ concentrations of dissolved organic carbon (>15 mg C l-1), and may offset the effects of severe light limitation on the phytoplankton in this deep, highly shaded environment.

---

Alle informatie in het Integrated Marine Information System (IMIS) valt onder het VLIZ Privacy beleid

Top | Auteurs