ECOHYDROLOGICAL MODELING OF BEAVER DAMS
Beavers (Castor canadensis and C. fiber) are expanding in their native range in North America and Eurasia and are expanding their range into urban environments and the Arctic tundra. Outside their natural range, they are also in Southern Patagonia because of historic releases in the fur industry. Gi...
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2023
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ftusaskatchewan:oai:harvest.usask.ca:10388/15076 2023-10-29T02:34:44+01:00 ECOHYDROLOGICAL MODELING OF BEAVER DAMS Aguirre Belmar, Ignacio Jose Westbrook, Cherie J Hood, Glynnis A Guo, Xulin Pomeroy, John W Mazurek, Kerry A 2023-09-27T17:39:21Z application/pdf https://hdl.handle.net/10388/15076 en eng University of Saskatchewan https://hdl.handle.net/10388/15076 TC-SSU-15076 Beavers BeaverPy beaver dam flow states hydrological modelling Thesis text 2023 ftusaskatchewan 2023-09-30T22:10:25Z Beavers (Castor canadensis and C. fiber) are expanding in their native range in North America and Eurasia and are expanding their range into urban environments and the Arctic tundra. Outside their natural range, they are also in Southern Patagonia because of historic releases in the fur industry. Given the broad geographical span of this expansion, it is critical to understand and predict the hydrology of beaver-dominated landscapes. Beavers build dams that modify the water balance and modulate streamflow through different flow states, which might result in drought and flood mitigation. To date, four published hydrological models have been developed to predict these impacts; however, these models were unable to represent dam variability and dynamics. In this study, a model specific to beaver dams was developed to predict the impacts of beaver dams on hydrology by including the flow state dynamics and the heterogeneity of dams and ponds. First, through the instrumentation of the montane peatland of Sibbald Fen in the Canadian Rocky Mountains, I determined that flow state changes of beaver dams are dynamic on a much shorter scale than previously documented. The shifts from one flow state to another happen regularly, have limited synchronicity within dam sequences, and can be predicted. In Sibbald, 66% to 80% of the flow state changes coincided with rainfall-runoff triggers and no changes were associated with biota using the dams. Following this flow state dynamic, I then developed an open-source model called BeaverPy in Python to simulate key features of dams and their impact on hydrology. Five single flow states and mixed combinations were included to identify their dynamics using a vector-based modeling approach, which accounted for changes in dam structures. Simulating individual and in-sequence dams from Sibbald Fen demonstrated that BeaverPy successfully models streamflow modulation by beaver dams, water storage in ponds, and flow state changes. Metrics for simulated vs. measured behavior for streamflow ... Thesis Arctic Tundra University of Saskatchewan: eCommons@USASK |
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English |
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Beavers BeaverPy beaver dam flow states hydrological modelling |
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Beavers BeaverPy beaver dam flow states hydrological modelling Aguirre Belmar, Ignacio Jose ECOHYDROLOGICAL MODELING OF BEAVER DAMS |
topic_facet |
Beavers BeaverPy beaver dam flow states hydrological modelling |
description |
Beavers (Castor canadensis and C. fiber) are expanding in their native range in North America and Eurasia and are expanding their range into urban environments and the Arctic tundra. Outside their natural range, they are also in Southern Patagonia because of historic releases in the fur industry. Given the broad geographical span of this expansion, it is critical to understand and predict the hydrology of beaver-dominated landscapes. Beavers build dams that modify the water balance and modulate streamflow through different flow states, which might result in drought and flood mitigation. To date, four published hydrological models have been developed to predict these impacts; however, these models were unable to represent dam variability and dynamics. In this study, a model specific to beaver dams was developed to predict the impacts of beaver dams on hydrology by including the flow state dynamics and the heterogeneity of dams and ponds. First, through the instrumentation of the montane peatland of Sibbald Fen in the Canadian Rocky Mountains, I determined that flow state changes of beaver dams are dynamic on a much shorter scale than previously documented. The shifts from one flow state to another happen regularly, have limited synchronicity within dam sequences, and can be predicted. In Sibbald, 66% to 80% of the flow state changes coincided with rainfall-runoff triggers and no changes were associated with biota using the dams. Following this flow state dynamic, I then developed an open-source model called BeaverPy in Python to simulate key features of dams and their impact on hydrology. Five single flow states and mixed combinations were included to identify their dynamics using a vector-based modeling approach, which accounted for changes in dam structures. Simulating individual and in-sequence dams from Sibbald Fen demonstrated that BeaverPy successfully models streamflow modulation by beaver dams, water storage in ponds, and flow state changes. Metrics for simulated vs. measured behavior for streamflow ... |
author2 |
Westbrook, Cherie J Hood, Glynnis A Guo, Xulin Pomeroy, John W Mazurek, Kerry A |
format |
Thesis |
author |
Aguirre Belmar, Ignacio Jose |
author_facet |
Aguirre Belmar, Ignacio Jose |
author_sort |
Aguirre Belmar, Ignacio Jose |
title |
ECOHYDROLOGICAL MODELING OF BEAVER DAMS |
title_short |
ECOHYDROLOGICAL MODELING OF BEAVER DAMS |
title_full |
ECOHYDROLOGICAL MODELING OF BEAVER DAMS |
title_fullStr |
ECOHYDROLOGICAL MODELING OF BEAVER DAMS |
title_full_unstemmed |
ECOHYDROLOGICAL MODELING OF BEAVER DAMS |
title_sort |
ecohydrological modeling of beaver dams |
publisher |
University of Saskatchewan |
publishDate |
2023 |
url |
https://hdl.handle.net/10388/15076 |
genre |
Arctic Tundra |
genre_facet |
Arctic Tundra |
op_relation |
https://hdl.handle.net/10388/15076 TC-SSU-15076 |
_version_ |
1781057426964873216 |