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Effects of nutrients and fish on periphyton and plant biomass across a European latitudinal gradient

Becares, Eloy; Goma, Joan; Fernandez-Alaez, Margarita; Fernandez-Alaez, Camino; Romo, Susana; Miracle, Maria R.; Ståhl-Delbanco, Annika LU ; Hansson, Lars-Anders LU ; Gyllström, Mikael LU and Van de Bund, Wouter J., et al. (2008) In Aquatic Ecology 42(4). p.561-574
Abstract
Replicated, factorial mesocosm experiments were conducted across Europe to study the effects of nutrient enrichment and fish density on macrophytes and on periphyton chlorophyll a (chl-a) with regard to latitude. Periphyton chl-a densities and plant decline were significantly related to nutrient loading in all countries. Fish effects were significant in a few sites only, mostly because of their contribution to the nutrient pool. A saturation-response type curve in periphyton chl-a with nutrients was found, and northern lakes achieved higher densities than southern lakes. Nutrient concentration and phytoplankton chl-a necessary for a 50% plant reduction followed a latitudinal gradient. Total phosphorus values for 50% plant disappearance... (More)
Replicated, factorial mesocosm experiments were conducted across Europe to study the effects of nutrient enrichment and fish density on macrophytes and on periphyton chlorophyll a (chl-a) with regard to latitude. Periphyton chl-a densities and plant decline were significantly related to nutrient loading in all countries. Fish effects were significant in a few sites only, mostly because of their contribution to the nutrient pool. A saturation-response type curve in periphyton chl-a with nutrients was found, and northern lakes achieved higher densities than southern lakes. Nutrient concentration and phytoplankton chl-a necessary for a 50% plant reduction followed a latitudinal gradient. Total phosphorus values for 50% plant disappearance were similar from Sweden (0.27 mg L-1) to northern Spain (0.35 mg L-1), but with a sharp increase in southern Spain (0.9 mg L-1). Planktonic chl-a values for 50% plant reduction increased monotonically from Sweden (30 mu g L-1s) to Valencia (150 mu g L-1). Longer plant growing-season, higher light intensities and temperature, and strong water-level fluctuations characteristic of southern latitudes can lead to greater persistence of macrophyte biomass at higher turbidities and nutrient concentration than in northern lakes. Results support the evidence that latitudinal differences in the functioning of shallow lakes should be considered in lake management and conservation policies. (Less)
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Contribution to journal
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published
subject
keywords
Mesocosms, Latitude, Shallow lakes, Macrophytes, Periphyton, Nutrients, Fishes
in
Aquatic Ecology
volume
42
issue
4
pages
561 - 574
publisher
Springer
external identifiers
  • wos:000260834900005
  • scopus:55949092562
ISSN
1386-2588
DOI
10.1007/s10452-007-9126-y
language
English
LU publication?
yes
id
c1fe1d68-ee9a-46f0-99b5-866f306505a9 (old id 1308805)
date added to LUP
2009-03-18 12:51:04
date last changed
2017-08-06 04:06:38
@article{c1fe1d68-ee9a-46f0-99b5-866f306505a9,
  abstract     = {Replicated, factorial mesocosm experiments were conducted across Europe to study the effects of nutrient enrichment and fish density on macrophytes and on periphyton chlorophyll a (chl-a) with regard to latitude. Periphyton chl-a densities and plant decline were significantly related to nutrient loading in all countries. Fish effects were significant in a few sites only, mostly because of their contribution to the nutrient pool. A saturation-response type curve in periphyton chl-a with nutrients was found, and northern lakes achieved higher densities than southern lakes. Nutrient concentration and phytoplankton chl-a necessary for a 50% plant reduction followed a latitudinal gradient. Total phosphorus values for 50% plant disappearance were similar from Sweden (0.27 mg L-1) to northern Spain (0.35 mg L-1), but with a sharp increase in southern Spain (0.9 mg L-1). Planktonic chl-a values for 50% plant reduction increased monotonically from Sweden (30 mu g L-1s) to Valencia (150 mu g L-1). Longer plant growing-season, higher light intensities and temperature, and strong water-level fluctuations characteristic of southern latitudes can lead to greater persistence of macrophyte biomass at higher turbidities and nutrient concentration than in northern lakes. Results support the evidence that latitudinal differences in the functioning of shallow lakes should be considered in lake management and conservation policies.},
  author       = {Becares, Eloy and Goma, Joan and Fernandez-Alaez, Margarita and Fernandez-Alaez, Camino and Romo, Susana and Miracle, Maria R. and Ståhl-Delbanco, Annika and Hansson, Lars-Anders and Gyllström, Mikael and Van de Bund, Wouter J. and Van Donk, Ellen and Kairesalo, Timo and Hietala, Jaana and Stephen, Debbie and Balayla, David and Moss, Brian},
  issn         = {1386-2588},
  keyword      = {Mesocosms,Latitude,Shallow lakes,Macrophytes,Periphyton,Nutrients,Fishes},
  language     = {eng},
  number       = {4},
  pages        = {561--574},
  publisher    = {Springer},
  series       = {Aquatic Ecology},
  title        = {Effects of nutrients and fish on periphyton and plant biomass across a European latitudinal gradient},
  url          = {http://dx.doi.org/10.1007/s10452-007-9126-y},
  volume       = {42},
  year         = {2008},
}