Changes
On March 7, 2022 at 1:15:29 PM CST, kelsey-friesenumanitoba-ca:
-
Set format of resource Changes in the Emergent Plant Community of Netley-Libau Marsh Between 1979 and 2001 to PDF in Netley-Libau Marsh Reports
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4 | "affiliation": "Environment and Climate Change Canada", | 4 | "affiliation": "Environment and Climate Change Canada", | ||
5 | "creatorName": "Watchorn, K. Elise", | 5 | "creatorName": "Watchorn, K. Elise", | ||
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11 | "PublicationYear": "2022", | 11 | "PublicationYear": "2022", | ||
12 | "Publisher": "Enivronment and Climate Change Canada", | 12 | "Publisher": "Enivronment and Climate Change Canada", | ||
13 | "ResourceType": "report", | 13 | "ResourceType": "report", | ||
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30 | "description": "Inland water features, drainage systems and | 30 | "description": "Inland water features, drainage systems and | ||
31 | their characteristics. Examples of data you can find here include | 31 | their characteristics. Examples of data you can find here include | ||
32 | river and lake data, water quality data. \r\n\r\nIn CEOS, related | 32 | river and lake data, water quality data. \r\n\r\nIn CEOS, related | ||
33 | research themes include biogeochemistry, Inland lakes and waters, | 33 | research themes include biogeochemistry, Inland lakes and waters, | ||
34 | modelling, remote sensing and technology, trace metals and | 34 | modelling, remote sensing and technology, trace metals and | ||
35 | contaminants.", | 35 | contaminants.", | ||
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63 | "metadata_created": "2022-03-07T19:00:10.419801", | 63 | "metadata_created": "2022-03-07T19:00:10.419801", | ||
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65 | "name": "netlib-marsh-reports", | 65 | "name": "netlib-marsh-reports", | ||
66 | "notes": "Phase II report: A time series analysis based on landsat | 66 | "notes": "Phase II report: A time series analysis based on landsat | ||
67 | imagery.", | 67 | imagery.", | ||
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77 | "name": "nlm", | 77 | "name": "nlm", | ||
78 | "state": "active", | 78 | "state": "active", | ||
79 | "title": "Netley-Libeau Marsh", | 79 | "title": "Netley-Libeau Marsh", | ||
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94 | ], | 94 | ], | ||
95 | "related_datasets": "[]", | 95 | "related_datasets": "[]", | ||
96 | "related_programs": "[]", | 96 | "related_programs": "[]", | ||
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100 | { | 100 | { | ||
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104 | "datastore_active": false, | 104 | "datastore_active": false, | ||
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106 | "description": "Netley-Libau Marsh, the largest coastal wetland | 106 | "description": "Netley-Libau Marsh, the largest coastal wetland | ||
107 | adjoining Lake Winnipeg, has been mapped by aerial\r\nphotography in | 107 | adjoining Lake Winnipeg, has been mapped by aerial\r\nphotography in | ||
108 | the past (Grosshans et al 2004; Verbiwski 1986), indicating a trend of | 108 | the past (Grosshans et al 2004; Verbiwski 1986), indicating a trend of | ||
109 | vegetation loss, but\r\na lack of historic aerial photography has | 109 | vegetation loss, but\r\na lack of historic aerial photography has | ||
110 | limited mapping efforts to sporadic intervals. Satellite | 110 | limited mapping efforts to sporadic intervals. Satellite | ||
111 | imagery,\r\nthough of a coarser spatial resolution, has the advantage | 111 | imagery,\r\nthough of a coarser spatial resolution, has the advantage | ||
112 | of high temporal and spectral resolution. Using\r\nLandsat images and | 112 | of high temporal and spectral resolution. Using\r\nLandsat images and | ||
113 | a methodology developed in an earlier phase of this study (Watchorn | 113 | a methodology developed in an earlier phase of this study (Watchorn | ||
114 | 2014), a time\r\nseries of classified vegetation cover maps was | 114 | 2014), a time\r\nseries of classified vegetation cover maps was | ||
115 | produced for twelve years between 1990 and 2013. Water\r\ncover maps | 115 | produced for twelve years between 1990 and 2013. Water\r\ncover maps | ||
116 | were produced for another eight years within this interval, resulting | 116 | were produced for another eight years within this interval, resulting | ||
117 | in a time series\r\nrepresenting 20 years of this 23-year period. This | 117 | in a time series\r\nrepresenting 20 years of this 23-year period. This | ||
118 | time series allowed for an investigation into\r\nrelationships between | 118 | time series allowed for an investigation into\r\nrelationships between | ||
119 | the extent and distribution of Netley\u2019s vegetation community to | 119 | the extent and distribution of Netley\u2019s vegetation community to | ||
120 | underlying\r\nhydrological factors on adjoining Lake Winnipeg and the | 120 | underlying\r\nhydrological factors on adjoining Lake Winnipeg and the | ||
121 | Red River, which can be used to guide future\r\nmarsh remediation | 121 | Red River, which can be used to guide future\r\nmarsh remediation | ||
122 | measures.\r\nThe analysis of this time series indicates that the | 122 | measures.\r\nThe analysis of this time series indicates that the | ||
123 | long-term trend of vegetation loss in Netley-Libau Marsh\r\nhas not | 123 | long-term trend of vegetation loss in Netley-Libau Marsh\r\nhas not | ||
124 | been steady, nor has it been unidirectional. Observed vegetation | 124 | been steady, nor has it been unidirectional. Observed vegetation | ||
125 | change \u2013 both loss and gain \u2013\r\nwas characterised by sudden | 125 | change \u2013 both loss and gain \u2013\r\nwas characterised by sudden | ||
126 | dramatic changes disrupting periods of relative stasis. Lake Winnipeg | 126 | dramatic changes disrupting periods of relative stasis. Lake Winnipeg | ||
127 | water\r\nlevel was identified as the major factor responsible for | 127 | water\r\nlevel was identified as the major factor responsible for | ||
128 | shifting the balance between emergent wetland\r\nvegetation and open | 128 | shifting the balance between emergent wetland\r\nvegetation and open | ||
129 | water. Periods of low water as short as one year had dramatic and | 129 | water. Periods of low water as short as one year had dramatic and | ||
130 | persistent effects\r\non emergent vegetation cover, particularly in | 130 | persistent effects\r\non emergent vegetation cover, particularly in | ||
131 | smaller lakes. Regenerated emergent vegetation was less\r\npersistent | 131 | smaller lakes. Regenerated emergent vegetation was less\r\npersistent | ||
132 | in the large Netley Lake, suggesting that marsh bathymetry is dynamic. | 132 | in the large Netley Lake, suggesting that marsh bathymetry is dynamic. | ||
133 | This study also\r\nidentified that Lake Winnipeg water level and Red | 133 | This study also\r\nidentified that Lake Winnipeg water level and Red | ||
134 | River flow are both contributing factors which influence\r\nthe extent | 134 | River flow are both contributing factors which influence\r\nthe extent | ||
135 | of wet meadows around Netley-Libau Marsh. Decreased river discharges | 135 | of wet meadows around Netley-Libau Marsh. Decreased river discharges | ||
136 | and lake levels were\r\ncorrelated with increasing use of these | 136 | and lake levels were\r\ncorrelated with increasing use of these | ||
137 | regions as hayed or cultivated land. Finally, the interpretation | 137 | regions as hayed or cultivated land. Finally, the interpretation | ||
138 | of\r\nthe cover map time series indicates the connectivity between the | 138 | of\r\nthe cover map time series indicates the connectivity between the | ||
139 | marsh lakes and Lake Winnipeg has\r\nvaried and is presently | 139 | marsh lakes and Lake Winnipeg has\r\nvaried and is presently | ||
140 | increasing. ", | 140 | increasing. ", | ||
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175 | "name": "Changes in the Emergent Plant Community of Netley-Libau | 175 | "name": "Changes in the Emergent Plant Community of Netley-Libau | ||
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201 | Coverages. Produced Based on Aerial Photography and Satellite Imagry | 201 | Coverages. Produced Based on Aerial Photography and Satellite Imagry | ||
202 | Netley-Libau Marsh, 2001", | 202 | Netley-Libau Marsh, 2001", | ||
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