TY  - JOUR
A1  - Périllon, Cécile
A1  - Hilt, Sabine
T1  - Groundwater influence differentially affects periphyton and macrophyte production in lakes
JF  - Hydrobiologia : acta hydrobiologica, hydrographica, limnologica et protistologica
N2  - Groundwater influx can significantly contribute to nutrient and carbon budgets of lakes, and its influence is the strongest in littoral areas dominated by macrophytes and periphyton. We have reviewed the effects of groundwater-borne nitrogen and phosphorus and dissolved inorganic and organic carbon (DIC, DOC) on these benthic primary producers in lakes. We develop a hypothesis for groundwater effects including the less studied impacts of periphyton shading on macrophytes. Groundwater-borne nutrients and DIC promote both macrophytes and periphyton. Direct studies on groundwater-borne DOC effects are lacking, but coloured DOC contributes to light attenuation and thus can restrict the growth of benthic primary producers. We predict that above certain threshold levels of nutrient influx by groundwater, periphyton and macrophyte biomass should decline owing to shading by phytoplankton and periphyton, respectively. However, because of their higher light requirements, those thresholds should be lower for macrophytes. For macrophytes, a threshold level is also predicted for a shift from DIC limitation to light limitation. Differences in light requirements are expected to result in lower thresholds of DOC loading for declines of macrophytes than periphyton.
KW  - Dissolved inorganic carbon
KW  - Dissolved organic carbon
KW  - Light
KW  - Macrophytes
KW  - Nutrients
KW  - Periphyton
Y1  - 2016
U6  - https://doi.org/10.1007/s10750-015-2485-9
SN  - 0018-8158
SN  - 1573-5117
VL  - 778
SP  - 91
EP  - 103
PB  - Springer
CY  - Dordrecht
ER  - 
TY  - JOUR
A1  - Perillon, Cecile
A1  - van de Weyer, Klaus
A1  - Päzolt, Jens
A1  - Kasprzak, Peter
A1  - Hilt, Sabine
T1  - Changes in submerged macrophyte colonization in shallow areas of an oligo-mesotrophic lake and the potential role of groundwater
JF  - Limnologica : ecology and management of inland waters
N2  - Groundwater influx can significantly contribute to nutrient budgets of lakes and its influence is strongest in shallow littoral areas. In oligo-or mesotrophic systems, additional nutrient supply by groundwater influx may affect benthic primary producers and their interactions. Potential changes can be expected in community composition, biomass, stoichiometry and interactions between submerged macrophytes and epiphyton.
KW  - Seepage
KW  - Eutrophication
KW  - Charophytes
KW  - Periphyton
KW  - Nutrients
KW  - Littoral
Y1  - 2018
U6  - https://doi.org/10.1016/j.limno.2017.03.002
SN  - 0075-9511
SN  - 1873-5851
VL  - 68
SP  - 168
EP  - 176
PB  - Elsevier
CY  - Jena
ER  -