Acidification recovery in a changing climate: Observations from thirty‐five years of stream chemistry monitoring in forested headwater catchments at the Turkey Lakes Watershed, Ontario

2021 ◽  
Author(s):  
K. L. Webster ◽  
J. A. Leach ◽  
D. Houle ◽  
P. W. Hazlett ◽  
E. J. S. Emilson
Keyword(s):  
Stream Chemistry ◽  
Headwater Catchments ◽  
Changing Climate ◽  
Turkey Lakes Watershed ◽  
Acidification Recovery

Modelling Stream Chemistry for the Turkey Lakes Watershed: Comparison with 1981–84 Data

1988 ◽  
Vol 45 (S1) ◽  
pp. s72-s80 ◽  
Author(s):  
D. C. L. Lam ◽  
A. G. Bobba ◽  
D. S. Jeffries ◽  
D. Craig
Keyword(s):  
Primary Productivity ◽  
Hydrological Model ◽  
Stream Chemistry ◽  
Stream System ◽  
Turkey Lakes Watershed ◽  
Simulation Results

Simulation results obtained from interfacing a hydrological model with a hydrogeochemical model are used to explain the increase of Ca2+ + Mg2+, alkalinity, and pH in a progressively buffered stream system in the Turkey Lakes Watershed, Ontario. Results from the model, which were calibrated with observed data for 1981, were confirmed with those from 1982, 1983, and 1984. The results further supported the hypothesis that the increases of the groundwater input of Ca into the lower streams contributed to the increase of alkalinity and pH in the downstream lakes which appeared to have caused a corresponding increase in the biological primary productivity in these lakes.

scholarly journals Changing climate and nutrient transfers: Evidence from high temporal resolution concentration-flow dynamics in headwater catchments

2016 ◽  
Vol 548-549 ◽  
pp. 325-339 ◽  
Author(s):  
M.C. Ockenden ◽  
C.E. Deasy ◽  
C.McW.H. Benskin ◽  
K.J. Beven ◽  
S. Burke ◽  
...  
Keyword(s):  
Temporal Resolution ◽  
Flow Dynamics ◽  
High Temporal Resolution ◽  
Headwater Catchments ◽  
Changing Climate

scholarly journals Modelling sulphate stream concentrations in the Black Forest catchments Schluchsee and Villingen

2003 ◽  
Vol 7 (4) ◽  
pp. 552-560 ◽  
Author(s):  
A. Prechtel ◽  
M. Armbruster ◽  
E. Matzner
Keyword(s):  
Future Research ◽  
Stream Chemistry ◽  
Stream Data ◽  
Black Forest ◽  
Organic S ◽  
Biogeochemical Models ◽  
Magic Model ◽  
Acidification Recovery ◽  
S Deposition

Abstract. The sulphate (SO4) released by mineralisation and desorption from soil can play an important role in determining concentrations of SO4 in streams. The MAGIC model was calibrated for two catchments in the Black Forest, Germany (Schluchsee and Villingen) and SO4 concentrations in the streams for the years 2016 and 2030 were predicted. Special emphasis was placed on the dynamics of soil sulphur (S) pools. At Schluchsee, 90% of soil S is stored in the organic S (Sorg) pool, whereas at Villingen, 54% is in the inorganic (Sinorg) pool. The Villingen stream chemistry was modelled successfully by measured Langmuir isotherm parameters (LIPs) for Sinorg. Schluchsee data could not be modelled satisfactorily using measured or freely adapted LIPs only, as the Sinorg pool would have to be more than five times larger than what was measured. With 60.5 mmolc SO4 m-2 yr-1 as internal soil source by mineralisation and the measured LIPs, stream data was modelled successfully. The modelling shows that in these two catchments pre-industrial concentrations of SO4 in runoff can be reached in the next two decades if S deposition decreases as intended under currently agreed national and international legislation. Sorg is the most likely dominant source of SO4 released at Schluchsee. Mineralization from the Sorg pool must be included when modelling SO4 concentrations in the stream. As the dynamics and the controlling factors of S release by mineralisation are not yet clear, this process remains a source of uncertainty for predictions of SO4 concentrations in streams. Future research should concentrate on dynamics of S mineralisation in the field, such that mathematical descriptions of long-term S-mineralisation can be incorporated into biogeochemical models. Keywords: sulphate release, organic S, mineralisation, acidification, recovery, modelling, MAGIC, catchments, predictions, Germany, forest

Floods in a Changing Climate: Extreme Precipitation

2012 ◽  
Author(s):  
Ramesh S. V. Teegavarapu
Keyword(s):  
Extreme Precipitation ◽  
Climate Extreme ◽  
Changing Climate

Energy - the changing climate

2001 ◽  
Vol 15 (3) ◽  
pp. 122-123
Keyword(s):  
Changing Climate

Assessment of Variation in Austin Water Demands under Changing Climate Conditions

2010 ◽  
Author(s):  
Joseph D. Smith ◽  
Eric D. Loucks ◽  
Katharine Hayhoe
Keyword(s):  
Climate Conditions ◽  
Changing Climate ◽  
Water Demands

CHANGING CLIMATE AND THE IRISH LANDSCAPE

2010 ◽  
Vol 110 (1) ◽  
pp. 1-16 ◽  
Author(s):  
F. I. Woodward ◽  
T. Quaife ◽  
M. R. Lomas
Keyword(s):  
Changing Climate
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