Stimulation of metazooplankton by photochemically modified dissolved organic matter
(2006) In Limnology and Oceanography 51(1). p.101-108- Abstract
- 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 (UV) radiation or kept dark, was added to semicontinuous laboratory microcosms that lasted for 7 weeks. Bacterial production responded positively to photochemical modification of DOM regardless of lake type. Final heterotrophic biomass (bacteria + proto + metazooplankton) was 47 +/- 5 and 37 +/- 5 mu g carbon (C) L-1 in microcosms with UV-exposed and unaltered eutrophic water DOM and 15 +/- 4 and 11 +/- 2 mu g C L-1 in microcosms with UV-exposed and unaltered humic water DOM, respectively. For the eutrophic water,... (More)
- 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 (UV) radiation or kept dark, was added to semicontinuous laboratory microcosms that lasted for 7 weeks. Bacterial production responded positively to photochemical modification of DOM regardless of lake type. Final heterotrophic biomass (bacteria + proto + metazooplankton) was 47 +/- 5 and 37 +/- 5 mu g carbon (C) L-1 in microcosms with UV-exposed and unaltered eutrophic water DOM and 15 +/- 4 and 11 +/- 2 mu g C L-1 in microcosms with UV-exposed and unaltered humic water DOM, respectively. For the eutrophic water, there were no significant differences in proto- or metazooplankton biomasses between microcosms receiving UV-exposed or nonexposed DOM. Differences between eutrophic water microcosms were not significant when flagellates, ciliates, cladocerans, and copepods were examined separately. In microcosms with UV-exposed humic water, biomasses of heterotrophic flagellates, rotifers, nauplii, and cladocerans were higher than in those with nonexposed DOM. Higher final metazooplankton biomass following addition of UV-exposed humic water indicates that photochemically modified DOM can be effectively transferred through the microbial loop. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/159567
- author
- Daniel, Cesar Bolivar LU ; Granéli, Wilhelm LU ; Kritzberg, Emma LU and Anesio, Alexandre Magno LU
- organization
- publishing date
- 2006
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Limnology and Oceanography
- volume
- 51
- issue
- 1
- pages
- 101 - 108
- publisher
- ASLO
- external identifiers
-
- wos:000237399700011
- scopus:32944465694
- ISSN
- 1939-5590
- language
- English
- LU publication?
- yes
- id
- 2d9678f2-9f90-4be5-98a6-64a648e2648c (old id 159567)
- alternative location
- http://www.aslo.org/lo/pdf/vol_51/issue_1/0101.pdf
- date added to LUP
- 2016-04-01 16:58:18
- date last changed
- 2024-01-11 18:17:41
@article{2d9678f2-9f90-4be5-98a6-64a648e2648c,
abstract = {{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 (UV) radiation or kept dark, was added to semicontinuous laboratory microcosms that lasted for 7 weeks. Bacterial production responded positively to photochemical modification of DOM regardless of lake type. Final heterotrophic biomass (bacteria + proto + metazooplankton) was 47 +/- 5 and 37 +/- 5 mu g carbon (C) L-1 in microcosms with UV-exposed and unaltered eutrophic water DOM and 15 +/- 4 and 11 +/- 2 mu g C L-1 in microcosms with UV-exposed and unaltered humic water DOM, respectively. For the eutrophic water, there were no significant differences in proto- or metazooplankton biomasses between microcosms receiving UV-exposed or nonexposed DOM. Differences between eutrophic water microcosms were not significant when flagellates, ciliates, cladocerans, and copepods were examined separately. In microcosms with UV-exposed humic water, biomasses of heterotrophic flagellates, rotifers, nauplii, and cladocerans were higher than in those with nonexposed DOM. Higher final metazooplankton biomass following addition of UV-exposed humic water indicates that photochemically modified DOM can be effectively transferred through the microbial loop.}},
author = {{Daniel, Cesar Bolivar and Granéli, Wilhelm and Kritzberg, Emma and Anesio, Alexandre Magno}},
issn = {{1939-5590}},
language = {{eng}},
number = {{1}},
pages = {{101--108}},
publisher = {{ASLO}},
series = {{Limnology and Oceanography}},
title = {{Stimulation of metazooplankton by photochemically modified dissolved organic matter}},
url = {{http://www.aslo.org/lo/pdf/vol_51/issue_1/0101.pdf}},
volume = {{51}},
year = {{2006}},
}