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En el instante 25 de junio de 2026, 12:38:54 UTC,
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Modificado el valor del campo
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a2026-06-25
en Sonic devices effectiveness in keeping wildlife off the road. -
Modificado el valor del campo
modified
del recurso Acceso al recurso a2026-06-25
(anteriormente2026-06-23
) en Sonic devices effectiveness in keeping wildlife off the road.
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| 77 | "name": "4ddd0e74-9bbe-54ed-a4dc-031e6183b8b5", | 91 | "name": "4ddd0e74-9bbe-54ed-a4dc-031e6183b8b5", | ||
| 78 | "notes": "Road networks represent a major disturbance for wildlife, | 92 | "notes": "Road networks represent a major disturbance for wildlife, | ||
| 79 | and their continued development threat-ens biodiversity. Many | 93 | and their continued development threat-ens biodiversity. Many | ||
| 80 | mitigation measures show reliable results at reducing road mortality, | 94 | mitigation measures show reliable results at reducing road mortality, | ||
| 81 | alt-hough with high costs (e.g. fences and crossing structures). | 95 | alt-hough with high costs (e.g. fences and crossing structures). | ||
| 82 | Inexpensive measures have been applied, but there is little proof of | 96 | Inexpensive measures have been applied, but there is little proof of | ||
| 83 | their effectiveness. Finding possible ways to reduce this impact | 97 | their effectiveness. Finding possible ways to reduce this impact | ||
| 84 | should be a priority issue for road planners. Some animals may take | 98 | should be a priority issue for road planners. Some animals may take | ||
| 85 | advantage of roads as refugees (mostly small animals) or as easier | 99 | advantage of roads as refugees (mostly small animals) or as easier | ||
| 86 | hunting sites (birds of prey), which makes them vulnerable to vehicle | 100 | hunting sites (birds of prey), which makes them vulnerable to vehicle | ||
| 87 | collisions. Therefore, dissuasion measures should be implemented in | 101 | collisions. Therefore, dissuasion measures should be implemented in | ||
| 88 | such a way that prevail over these bene-fits. Here we tested the | 102 | such a way that prevail over these bene-fits. Here we tested the | ||
| 89 | efficiency of monitoring and sound devices as an alternative method to | 103 | efficiency of monitoring and sound devices as an alternative method to | ||
| 90 | reduce wildlife road and electrocution mortality. We hypothesised that | 104 | reduce wildlife road and electrocution mortality. We hypothesised that | ||
| 91 | exposing animals to these stress levels will cause them to stay away | 105 | exposing animals to these stress levels will cause them to stay away | ||
| 92 | from the devices and, consequently, from the road or elec-trical line. | 106 | from the devices and, consequently, from the road or elec-trical line. | ||
| 93 | We made four prototypes: three dissuasion prototypes that include a | 107 | We made four prototypes: three dissuasion prototypes that include a | ||
| 94 | motion detection system based on infrared sensors and a sound device; | 108 | motion detection system based on infrared sensors and a sound device; | ||
| 95 | and one monitor prototype that includes a motion detector camera. Two | 109 | and one monitor prototype that includes a motion detector camera. Two | ||
| 96 | dissuasion prototypes aimed to discourage mice from approaching roads | 110 | dissuasion prototypes aimed to discourage mice from approaching roads | ||
| 97 | and were placed on the ground on a road verge in southern Portugal. | 111 | and were placed on the ground on a road verge in southern Portugal. | ||
| 98 | The third dissuasion pro-totype aimed to dissuade large birds from | 112 | The third dissuasion pro-totype aimed to dissuade large birds from | ||
| 99 | landing on an electrical pole and was placed in an electrical pole in | 113 | landing on an electrical pole and was placed in an electrical pole in | ||
| 100 | Southern Portugal. The monitoring prototype aimed to record the | 114 | Southern Portugal. The monitoring prototype aimed to record the | ||
| 101 | approaching and be-haviour of large birds on the electrical pole with | 115 | approaching and be-haviour of large birds on the electrical pole with | ||
| 102 | the dissuasion prototype, and it was placed pointed directly to the | 116 | the dissuasion prototype, and it was placed pointed directly to the | ||
| 103 | electrical pole. Whenever motion is detected, the devices started to | 117 | electrical pole. Whenever motion is detected, the devices started to | ||
| 104 | play ultrasound (mice dissuasion prototypes), audible sound (large | 118 | play ultrasound (mice dissuasion prototypes), audible sound (large | ||
| 105 | birds dissuasion prototype) or start recording (monitoring prototype). | 119 | birds dissuasion prototype) or start recording (monitoring prototype). | ||
| 106 | We counted the presence of animals at the spot 10-days before, and | 120 | We counted the presence of animals at the spot 10-days before, and | ||
| 107 | 10-days after the device was switched on (Before-After study): we | 121 | 10-days after the device was switched on (Before-After study): we | ||
| 108 | sampled mice with Sherman traps, and every day we observed the | 122 | sampled mice with Sherman traps, and every day we observed the | ||
| 109 | dissuasion prototype and the monitoring prototype of large birds. Our | 123 | dissuasion prototype and the monitoring prototype of large birds. Our | ||
| 110 | results showed a reduction of animal approach as soon as the | 124 | results showed a reduction of animal approach as soon as the | ||
| 111 | dissuasion prototypes were switched on, with fewer mice captures on | 125 | dissuasion prototypes were switched on, with fewer mice captures on | ||
| 112 | the road verges and greater bird avoidance or reduction of length of | 126 | the road verges and greater bird avoidance or reduction of length of | ||
| 113 | stay on the electrical pole. The monitor prototype was able to detect | 127 | stay on the electrical pole. The monitor prototype was able to detect | ||
| 114 | with good accuracy most of the birds that landed on the electrical | 128 | with good accuracy most of the birds that landed on the electrical | ||
| 115 | line. Wildlife detectors equipped with sound devices seem to be a | 129 | line. Wildlife detectors equipped with sound devices seem to be a | ||
| 116 | useful measure to reduce the approaching of these species. The next | 130 | useful measure to reduce the approaching of these species. The next | ||
| 117 | steps would be to analyse if this avoid-ance will cause a significant | 131 | steps would be to analyse if this avoid-ance will cause a significant | ||
| 118 | road and electrocution mortality reduction and if this method can be | 132 | road and electrocution mortality reduction and if this method can be | ||
| 119 | adapted to others species or locations.", | 133 | adapted to others species or locations.", | ||
| 120 | "notes_translated": { | 134 | "notes_translated": { | ||
| 121 | "en": "Road networks represent a major disturbance for wildlife, | 135 | "en": "Road networks represent a major disturbance for wildlife, | ||
| 122 | and their continued development threat-ens biodiversity. Many | 136 | and their continued development threat-ens biodiversity. Many | ||
| 123 | mitigation measures show reliable results at reducing road mortality, | 137 | mitigation measures show reliable results at reducing road mortality, | ||
| 124 | alt-hough with high costs (e.g. fences and crossing structures). | 138 | alt-hough with high costs (e.g. fences and crossing structures). | ||
| 125 | Inexpensive measures have been applied, but there is little proof of | 139 | Inexpensive measures have been applied, but there is little proof of | ||
| 126 | their effectiveness. Finding possible ways to reduce this impact | 140 | their effectiveness. Finding possible ways to reduce this impact | ||
| 127 | should be a priority issue for road planners. Some animals may take | 141 | should be a priority issue for road planners. Some animals may take | ||
| 128 | advantage of roads as refugees (mostly small animals) or as easier | 142 | advantage of roads as refugees (mostly small animals) or as easier | ||
| 129 | hunting sites (birds of prey), which makes them vulnerable to vehicle | 143 | hunting sites (birds of prey), which makes them vulnerable to vehicle | ||
| 130 | collisions. Therefore, dissuasion measures should be implemented in | 144 | collisions. Therefore, dissuasion measures should be implemented in | ||
| 131 | such a way that prevail over these bene-fits. Here we tested the | 145 | such a way that prevail over these bene-fits. Here we tested the | ||
| 132 | efficiency of monitoring and sound devices as an alternative method | 146 | efficiency of monitoring and sound devices as an alternative method | ||
| 133 | to\nreduce wildlife road and electrocution mortality. We hypothesised | 147 | to\nreduce wildlife road and electrocution mortality. We hypothesised | ||
| 134 | that exposing animals to these stress levels will cause them to stay | 148 | that exposing animals to these stress levels will cause them to stay | ||
| 135 | away from the devices and, consequently, from the road or elec-trical | 149 | away from the devices and, consequently, from the road or elec-trical | ||
| 136 | line. We made four prototypes: three dissuasion prototypes that | 150 | line. We made four prototypes: three dissuasion prototypes that | ||
| 137 | include a motion detection system based on infrared sensors and a | 151 | include a motion detection system based on infrared sensors and a | ||
| 138 | sound device; and one monitor prototype that includes a motion | 152 | sound device; and one monitor prototype that includes a motion | ||
| 139 | detector camera. Two dissuasion prototypes aimed to discourage mice | 153 | detector camera. Two dissuasion prototypes aimed to discourage mice | ||
| 140 | from approaching roads and were placed on the ground on a road verge | 154 | from approaching roads and were placed on the ground on a road verge | ||
| 141 | in southern Portugal. The third dissuasion pro-totype aimed to | 155 | in southern Portugal. The third dissuasion pro-totype aimed to | ||
| 142 | dissuade large birds from landing on an electrical pole and was placed | 156 | dissuade large birds from landing on an electrical pole and was placed | ||
| 143 | in an electrical pole in Southern Portugal. The monitoring prototype | 157 | in an electrical pole in Southern Portugal. The monitoring prototype | ||
| 144 | aimed to record the approaching and be-haviour of large birds on the | 158 | aimed to record the approaching and be-haviour of large birds on the | ||
| 145 | electrical pole with the dissuasion prototype, and it was placed | 159 | electrical pole with the dissuasion prototype, and it was placed | ||
| 146 | pointed directly to the electrical pole. Whenever motion is detected, | 160 | pointed directly to the electrical pole. Whenever motion is detected, | ||
| 147 | the devices started to play ultrasound (mice dissuasion prototypes), | 161 | the devices started to play ultrasound (mice dissuasion prototypes), | ||
| 148 | audible sound (large birds dissuasion prototype) or start recording | 162 | audible sound (large birds dissuasion prototype) or start recording | ||
| 149 | (monitoring prototype). We counted the presence of animals at the spot | 163 | (monitoring prototype). We counted the presence of animals at the spot | ||
| 150 | 10-days before, and 10-days after the device was switched on | 164 | 10-days before, and 10-days after the device was switched on | ||
| 151 | (Before-After study): we sampled mice with Sherman traps, and every | 165 | (Before-After study): we sampled mice with Sherman traps, and every | ||
| 152 | day we observed the dissuasion prototype and the monitoring prototype | 166 | day we observed the dissuasion prototype and the monitoring prototype | ||
| 153 | of large birds. Our results showed a reduction of animal approach as | 167 | of large birds. Our results showed a reduction of animal approach as | ||
| 154 | soon as the dissuasion prototypes were switched on, with fewer mice | 168 | soon as the dissuasion prototypes were switched on, with fewer mice | ||
| 155 | captures on the road verges and greater bird avoidance or reduction of | 169 | captures on the road verges and greater bird avoidance or reduction of | ||
| 156 | length of stay on the electrical pole. The monitor prototype was able | 170 | length of stay on the electrical pole. The monitor prototype was able | ||
| 157 | to detect with good accuracy most of the birds that landed on the | 171 | to detect with good accuracy most of the birds that landed on the | ||
| 158 | electrical line. Wildlife detectors equipped with sound devices seem | 172 | electrical line. Wildlife detectors equipped with sound devices seem | ||
| 159 | to be a useful measure to reduce the approaching of these species. The | 173 | to be a useful measure to reduce the approaching of these species. The | ||
| 160 | next steps would be to analyse if this avoid-ance will cause a | 174 | next steps would be to analyse if this avoid-ance will cause a | ||
| 161 | significant road and electrocution mortality reduction and if this | 175 | significant road and electrocution mortality reduction and if this | ||
| 162 | method can be adapted to others species or locations.", | 176 | method can be adapted to others species or locations.", | ||
| 163 | "es": "Road networks represent a major disturbance for wildlife, | 177 | "es": "Road networks represent a major disturbance for wildlife, | ||
| 164 | and their continued development threat-ens biodiversity. Many | 178 | and their continued development threat-ens biodiversity. Many | ||
| 165 | mitigation measures show reliable results at reducing road mortality, | 179 | mitigation measures show reliable results at reducing road mortality, | ||
| 166 | alt-hough with high costs (e.g. fences and crossing structures). | 180 | alt-hough with high costs (e.g. fences and crossing structures). | ||
| 167 | Inexpensive measures have been applied, but there is little proof of | 181 | Inexpensive measures have been applied, but there is little proof of | ||
| 168 | their effectiveness. Finding possible ways to reduce this impact | 182 | their effectiveness. Finding possible ways to reduce this impact | ||
| 169 | should be a priority issue for road planners. Some animals may take | 183 | should be a priority issue for road planners. Some animals may take | ||
| 170 | advantage of roads as refugees (mostly small animals) or as easier | 184 | advantage of roads as refugees (mostly small animals) or as easier | ||
| 171 | hunting sites (birds of prey), which makes them vulnerable to vehicle | 185 | hunting sites (birds of prey), which makes them vulnerable to vehicle | ||
| 172 | collisions. Therefore, dissuasion measures should be implemented in | 186 | collisions. Therefore, dissuasion measures should be implemented in | ||
| 173 | such a way that prevail over these bene-fits. Here we tested the | 187 | such a way that prevail over these bene-fits. Here we tested the | ||
| 174 | efficiency of monitoring and sound devices as an alternative method to | 188 | efficiency of monitoring and sound devices as an alternative method to | ||
| 175 | reduce wildlife road and electrocution mortality. We hypothesised that | 189 | reduce wildlife road and electrocution mortality. We hypothesised that | ||
| 176 | exposing animals to these stress levels will cause them to stay away | 190 | exposing animals to these stress levels will cause them to stay away | ||
| 177 | from the devices and, consequently, from the road or elec-trical line. | 191 | from the devices and, consequently, from the road or elec-trical line. | ||
| 178 | We made four prototypes: three dissuasion prototypes that include a | 192 | We made four prototypes: three dissuasion prototypes that include a | ||
| 179 | motion detection system based on infrared sensors and a sound device; | 193 | motion detection system based on infrared sensors and a sound device; | ||
| 180 | and one monitor prototype that includes a motion detector camera. Two | 194 | and one monitor prototype that includes a motion detector camera. Two | ||
| 181 | dissuasion prototypes aimed to discourage mice from approaching roads | 195 | dissuasion prototypes aimed to discourage mice from approaching roads | ||
| 182 | and were placed on the ground on a road verge in southern Portugal. | 196 | and were placed on the ground on a road verge in southern Portugal. | ||
| 183 | The third dissuasion pro-totype aimed to dissuade large birds from | 197 | The third dissuasion pro-totype aimed to dissuade large birds from | ||
| 184 | landing on an electrical pole and was placed in an electrical pole in | 198 | landing on an electrical pole and was placed in an electrical pole in | ||
| 185 | Southern Portugal. The monitoring prototype aimed to record the | 199 | Southern Portugal. The monitoring prototype aimed to record the | ||
| 186 | approaching and be-haviour of large birds on the electrical pole with | 200 | approaching and be-haviour of large birds on the electrical pole with | ||
| 187 | the dissuasion prototype, and it was placed pointed directly to the | 201 | the dissuasion prototype, and it was placed pointed directly to the | ||
| 188 | electrical pole. Whenever motion is detected, the devices started to | 202 | electrical pole. Whenever motion is detected, the devices started to | ||
| 189 | play ultrasound (mice dissuasion prototypes), audible sound (large | 203 | play ultrasound (mice dissuasion prototypes), audible sound (large | ||
| 190 | birds dissuasion prototype) or start recording (monitoring prototype). | 204 | birds dissuasion prototype) or start recording (monitoring prototype). | ||
| 191 | We counted the presence of animals at the spot 10-days before, and | 205 | We counted the presence of animals at the spot 10-days before, and | ||
| 192 | 10-days after the device was switched on (Before-After study): we | 206 | 10-days after the device was switched on (Before-After study): we | ||
| 193 | sampled mice with Sherman traps, and every day we observed the | 207 | sampled mice with Sherman traps, and every day we observed the | ||
| 194 | dissuasion prototype and the monitoring prototype of large birds. Our | 208 | dissuasion prototype and the monitoring prototype of large birds. Our | ||
| 195 | results showed a reduction of animal approach as soon as the | 209 | results showed a reduction of animal approach as soon as the | ||
| 196 | dissuasion prototypes were switched on, with fewer mice captures on | 210 | dissuasion prototypes were switched on, with fewer mice captures on | ||
| 197 | the road verges and greater bird avoidance or reduction of length of | 211 | the road verges and greater bird avoidance or reduction of length of | ||
| 198 | stay on the electrical pole. The monitor prototype was able to detect | 212 | stay on the electrical pole. The monitor prototype was able to detect | ||
| 199 | with good accuracy most of the birds that landed on the electrical | 213 | with good accuracy most of the birds that landed on the electrical | ||
| 200 | line. Wildlife detectors equipped with sound devices seem to be a | 214 | line. Wildlife detectors equipped with sound devices seem to be a | ||
| 201 | useful measure to reduce the approaching of these species. The next | 215 | useful measure to reduce the approaching of these species. The next | ||
| 202 | steps would be to analyse if this avoid-ance will cause a significant | 216 | steps would be to analyse if this avoid-ance will cause a significant | ||
| 203 | road and electrocution mortality reduction and if this method can be | 217 | road and electrocution mortality reduction and if this method can be | ||
| 204 | adapted to others species or locations." | 218 | adapted to others species or locations." | ||
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