Land cover controls on depression-focused recharge on the Oak Ridges Moraine, southern Ontario, Canada

2018 ◽  
Vol 32 (12) ◽  
pp. 1909-1926 ◽  
Author(s):  
Wes J. Greenwood ◽  
James M. Buttle
Keyword(s):  
Land Cover ◽  
Southern Ontario ◽  
Oak Ridges Moraine

Soil water recharge for grassed and forested land covers on the Oak Ridges Moraine, southern Ontario, Canada

2015 ◽  
Vol 47 (2) ◽  
pp. 390-408
Author(s):  
R. Bialkowski ◽  
J. M. Buttle
Keyword(s):  
Land Cover ◽  
Soil Water ◽  
Red Pine ◽  
Pine Plantations ◽  
Southern Ontario ◽  
Oak Ridges Moraine ◽  
Water Recharge ◽  
Land Covers ◽  
Soil Water Recharge

Soil water recharge (R) below 1 m depth was estimated via a 1-d water balance for grasslands, hardwood stands and red pine plantations on the Oak Ridges Moraine (ORM) in southern Ontario, Canada. Annual R values (431–696 mm) were in the order of previous estimates for outcropping sands and gravels on the ORM (∼400 mm); however, they only partially supported hypothesized differences in R between land covers. Annual R was similar for grasslands and hardwood stands and exceeded that for red pine plantations. However, there were no consistent differences in R between land covers for growing or dormant seasons, due to relatively large uncertainties for R estimates as well as inter-site differences in the soil's ability to store and transmit inputs below 1 m. Nevertheless, shifts in annual R appear to have accompanied historical land cover changes from hardwood-conifer stands → agricultural fields → red pine plantations → regenerating hardwoods. Growing season R in hardwoods makes a larger contribution to total R than for other land covers, partly due to spatially focused throughfall and stemflow contributions to R. Results highlight the role of land cover differences when assessing spatial variations in R along the ORM.

scholarly journals Structural model of the Greater Toronto and Oak Ridges Moraine areas, southern Ontario: ORM sediment

2005 ◽  
Author(s):  
H A J Russell ◽  
D R Sharpe ◽  
C Logan
Keyword(s):  
Structural Model ◽  
Southern Ontario ◽  
Oak Ridges Moraine

scholarly journals Regional hydrogeology: models and land use planning, Oak Ridges Moraine, southern Ontario

2001 ◽  
Author(s):  
D R Sharpe ◽  
M Hinton ◽  
H A J Russell ◽  
C Logan
Keyword(s):  
Land Use ◽  
Land Use Planning ◽  
Southern Ontario ◽  
Oak Ridges Moraine ◽  
Regional Hydrogeology

scholarly journals Tunnel channels of the Greater Toronto and Oak Ridges Moraine areas, southern Ontario

2003 ◽  
Author(s):  
H A J Russell ◽  
D R Sharpe ◽  
T A Brennand ◽  
P J Barnett ◽  
C Logan
Keyword(s):  
Southern Ontario ◽  
Oak Ridges Moraine

Downhole Seismic Logging Techniques In A Regional Hydrogeology Study, Oak Ridges Moraine, Southern Ontario

2000 ◽  
Author(s):  
S.E. Pullan ◽  
J.A. Hunter ◽  
A. Pugin ◽  
R.A. Burns ◽  
M.J. Hinton
Keyword(s):  
Southern Ontario ◽  
Oak Ridges Moraine ◽  
Regional Hydrogeology

A Comparison of Urbanization Effects on Stream Benthic Macroinvertebrates and Water Chemistry in an Urban and an Urbanizing Basin in Southern Ontario, Canada

2010 ◽  
Vol 45 (3) ◽  
pp. 327-341 ◽  
Author(s):  
Normand L. Bazinet ◽  
Beth M. Gilbert ◽  
Angela M. Wallace
Keyword(s):  
Land Cover ◽  
Urban Development ◽  
Correspondence Analysis ◽  
Lake Ontario ◽  
Urban Land ◽  
Biotic Index ◽  
Southern Ontario ◽  
Urban Land Cover ◽  
Linear Relationships ◽  
Lake Simcoe

Abstract Benthic invertebrate communities were compared in several watersheds within an urban basin and an urbanizing basin in southern Ontario, Canada. The urban watersheds of the Lake Ontario basin and the urbanizing watersheds within the Lake Simcoe basin share similar geologies, soils, and climates, but differ in the stage of urban development within these two basins. Correspondence analysis showed that invertebrate populations formed distinct groups split between these two basins owing to intense urban development in the Lake Ontario watersheds versus the agricultural nature of the Lake Simcoe basin. Canonical correspondence analysis ordinations indicated that the major environmental gradients were related to urban land cover (imperviousness), chloride, nitrates and stream order factors. Urban land cover and chloride were most strongly associated with the first axis. The typical logarithmic relationship between urban land cover and benthos found in other studies was not evident in this study. Rather, 9 of the 12 metrics tested had significant linear relationships with urban land cover. The Hilsenhoff Family Biotic Index and percent Oligochaeta metrics showed the strongest positive linear relationships with urban land cover. Pollution sensitive groups (Ephemeroptera, Plecoptera, and Trichoptera) along with richness and diversity measures decreased with increasing urbanization.

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