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a2026-06-25
en How do roads affect the ecological processes and biodiversity? – summing up a systematic literature review for the decade 2008-2018. -
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del recurso Acceso al recurso a2026-06-25
(anteriormente2026-06-23
) en How do roads affect the ecological processes and biodiversity? – summing up a systematic literature review for the decade 2008-2018.
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| 85 | "notes": "Roads affects ecological processes at a range of spatial | 99 | "notes": "Roads affects ecological processes at a range of spatial | ||
| 86 | scales, and studies document both negative and positive effects on | 100 | scales, and studies document both negative and positive effects on | ||
| 87 | natural capital and ecological processes. Still there are too large | 101 | natural capital and ecological processes. Still there are too large | ||
| 88 | knowledge gaps and geographic and taxonomic biases to draw conclusions | 102 | knowledge gaps and geographic and taxonomic biases to draw conclusions | ||
| 89 | and guide road authorities. We used a systematic review approach to | 103 | and guide road authorities. We used a systematic review approach to | ||
| 90 | synthesise current knowledge and identify knowledge gaps. We used a | 104 | synthesise current knowledge and identify knowledge gaps. We used a | ||
| 91 | broad search string and limited our search to the period 2008 -2018. | 105 | broad search string and limited our search to the period 2008 -2018. | ||
| 92 | This gave a total of about 2000 unique papers. Title and abstract | 106 | This gave a total of about 2000 unique papers. Title and abstract | ||
| 93 | screening reduced this to 473 papers where we included studies that | 107 | screening reduced this to 473 papers where we included studies that | ||
| 94 | estimate, model or review effects of roads on population processes, | 108 | estimate, model or review effects of roads on population processes, | ||
| 95 | demography, distribution, occurrence, abundance, biodiversity, | 109 | demography, distribution, occurrence, abundance, biodiversity, | ||
| 96 | behaviour and landscape connectivity. Papers that passed the initial | 110 | behaviour and landscape connectivity. Papers that passed the initial | ||
| 97 | screening criteria were screened on full-text, grouped into themes and | 111 | screening criteria were screened on full-text, grouped into themes and | ||
| 98 | explored in more detail to detect patterns related to geography, road | 112 | explored in more detail to detect patterns related to geography, road | ||
| 99 | types, habitat types, management and responses recorded. This grouping | 113 | types, habitat types, management and responses recorded. This grouping | ||
| 100 | was based on whether papers addressed invasive species; population | 114 | was based on whether papers addressed invasive species; population | ||
| 101 | genetics; edge effects, landscape perspectives; population processes; | 115 | genetics; edge effects, landscape perspectives; population processes; | ||
| 102 | biodiversity; dispersal and connectivity; roadside construction and | 116 | biodiversity; dispersal and connectivity; roadside construction and | ||
| 103 | management; verges as habitats and resource; ecological traps; | 117 | management; verges as habitats and resource; ecological traps; | ||
| 104 | roadkill; pollution and ecotoxicology; verges as refugees and | 118 | roadkill; pollution and ecotoxicology; verges as refugees and | ||
| 105 | conservation approaches; noise; urbanisation; or ecosystem services. | 119 | conservation approaches; noise; urbanisation; or ecosystem services. | ||
| 106 | These groups of papers were then reviewed using a narrative approach. | 120 | These groups of papers were then reviewed using a narrative approach. | ||
| 107 | Biodiversity was addressed in 175 papers as the largest category of | 121 | Biodiversity was addressed in 175 papers as the largest category of | ||
| 108 | papers, mainly with a focus on taxonomic diversity and often within a | 122 | papers, mainly with a focus on taxonomic diversity and often within a | ||
| 109 | narrow phylogenetic focus. 130 studies addressed different landscape | 123 | narrow phylogenetic focus. 130 studies addressed different landscape | ||
| 110 | perspectives, some in combination with details on fragmentation, | 124 | perspectives, some in combination with details on fragmentation, | ||
| 111 | population genetics, dispersal and connectivity. The majority of | 125 | population genetics, dispersal and connectivity. The majority of | ||
| 112 | papers on movement and dispersal, however, addressed processes at | 126 | papers on movement and dispersal, however, addressed processes at | ||
| 113 | smaller spatial scales. A good number of papers (124) explored the | 127 | smaller spatial scales. A good number of papers (124) explored the | ||
| 114 | role of road verges as habitats or providers of resources. In a subset | 128 | role of road verges as habitats or providers of resources. In a subset | ||
| 115 | of the papers, this was linked to the role of roadsides as refuges or | 129 | of the papers, this was linked to the role of roadsides as refuges or | ||
| 116 | their role in conservation. There were over 100 papers addressing | 130 | their role in conservation. There were over 100 papers addressing | ||
| 117 | demography and population processes involving a broad range of | 131 | demography and population processes involving a broad range of | ||
| 118 | measured or estimated effects and only a few in combination with | 132 | measured or estimated effects and only a few in combination with | ||
| 119 | population genetics. Edge effects were also rather well described for | 133 | population genetics. Edge effects were also rather well described for | ||
| 120 | a wide range of organisms (108 papers) sometimes linked to abiotic | 134 | a wide range of organisms (108 papers) sometimes linked to abiotic | ||
| 121 | explanatory variables. We found that, despite strong negative effects | 135 | explanatory variables. We found that, despite strong negative effects | ||
| 122 | of processes and factors such as noise, barrier effects, vehicle | 136 | of processes and factors such as noise, barrier effects, vehicle | ||
| 123 | collisions and landscape fragmentation, HTI can contain considerable | 137 | collisions and landscape fragmentation, HTI can contain considerable | ||
| 124 | biological diversity and species richness, contribute to structural | 138 | biological diversity and species richness, contribute to structural | ||
| 125 | and resource heterogeneity in the landscape, and function as corridors | 139 | and resource heterogeneity in the landscape, and function as corridors | ||
| 126 | for a diverse set of organisms. However, evidence of these | 140 | for a diverse set of organisms. However, evidence of these | ||
| 127 | contributions is fragmented, with high species-specificity in | 141 | contributions is fragmented, with high species-specificity in | ||
| 128 | responses (especially in animals), but also a strong impact of the | 142 | responses (especially in animals), but also a strong impact of the | ||
| 129 | landscape configuration and resources. A shift in focus from species | 143 | landscape configuration and resources. A shift in focus from species | ||
| 130 | occurrence to processes and functions at population and community | 144 | occurrence to processes and functions at population and community | ||
| 131 | level; addressing the importance of connectivity towards and away from | 145 | level; addressing the importance of connectivity towards and away from | ||
| 132 | the roads, integrating habitats along roads in a larger landscape; and | 146 | the roads, integrating habitats along roads in a larger landscape; and | ||
| 133 | approaches to identify and prioritise critical components and | 147 | approaches to identify and prioritise critical components and | ||
| 134 | trade-offs during road construction and maintenance are among the | 148 | trade-offs during road construction and maintenance are among the | ||
| 135 | major knowledge gaps to be addressed in future research.", | 149 | major knowledge gaps to be addressed in future research.", | ||
| 136 | "notes_translated": { | 150 | "notes_translated": { | ||
| 137 | "en": "Roads affects ecological processes at a range of spatial | 151 | "en": "Roads affects ecological processes at a range of spatial | ||
| 138 | scales, and studies document both negative and positive effects on | 152 | scales, and studies document both negative and positive effects on | ||
| 139 | natural capital and ecological processes. Still there are too large | 153 | natural capital and ecological processes. Still there are too large | ||
| 140 | knowledge gaps and geographic and taxonomic biases to draw conclusions | 154 | knowledge gaps and geographic and taxonomic biases to draw conclusions | ||
| 141 | and guide road authorities. We used a systematic review approach to | 155 | and guide road authorities. We used a systematic review approach to | ||
| 142 | synthesise current knowledge and identify knowledge gaps. We used a | 156 | synthesise current knowledge and identify knowledge gaps. We used a | ||
| 143 | broad search string and limited our search to the period 2008 -2018. | 157 | broad search string and limited our search to the period 2008 -2018. | ||
| 144 | This gave a total of about 2000 unique papers. Title and abstract | 158 | This gave a total of about 2000 unique papers. Title and abstract | ||
| 145 | screening reduced this to 473 papers where we included studies that | 159 | screening reduced this to 473 papers where we included studies that | ||
| 146 | estimate, model or review effects of roads on population processes, | 160 | estimate, model or review effects of roads on population processes, | ||
| 147 | demography, distribution, occurrence, abundance, biodiversity, | 161 | demography, distribution, occurrence, abundance, biodiversity, | ||
| 148 | behaviour and landscape connectivity. Papers that passed the initial | 162 | behaviour and landscape connectivity. Papers that passed the initial | ||
| 149 | screening criteria were screened on full-text, grouped into themes and | 163 | screening criteria were screened on full-text, grouped into themes and | ||
| 150 | explored in more detail to detect patterns related to geography, road | 164 | explored in more detail to detect patterns related to geography, road | ||
| 151 | types, habitat types, management and responses recorded. This grouping | 165 | types, habitat types, management and responses recorded. This grouping | ||
| 152 | was based on whether papers addressed invasive species; population | 166 | was based on whether papers addressed invasive species; population | ||
| 153 | genetics; edge effects, landscape perspectives; population processes; | 167 | genetics; edge effects, landscape perspectives; population processes; | ||
| 154 | biodiversity; dispersal and connectivity; roadside construction and | 168 | biodiversity; dispersal and connectivity; roadside construction and | ||
| 155 | management; verges as habitats and resource; ecological traps; | 169 | management; verges as habitats and resource; ecological traps; | ||
| 156 | roadkill; pollution and ecotoxicology; verges as refugees and | 170 | roadkill; pollution and ecotoxicology; verges as refugees and | ||
| 157 | conservation approaches; noise; urbanisation; or ecosystem services. | 171 | conservation approaches; noise; urbanisation; or ecosystem services. | ||
| 158 | These groups of papers were then reviewed using a narrative approach. | 172 | These groups of papers were then reviewed using a narrative approach. | ||
| 159 | Biodiversity was addressed in 175 papers as the largest category of | 173 | Biodiversity was addressed in 175 papers as the largest category of | ||
| 160 | papers, mainly with a focus on taxonomic diversity and often within a | 174 | papers, mainly with a focus on taxonomic diversity and often within a | ||
| 161 | narrow phylogenetic focus. 130 studies addressed different landscape | 175 | narrow phylogenetic focus. 130 studies addressed different landscape | ||
| 162 | perspectives, some in combination with details on fragmentation, | 176 | perspectives, some in combination with details on fragmentation, | ||
| 163 | population genetics, dispersal and connectivity. The majority of | 177 | population genetics, dispersal and connectivity. The majority of | ||
| 164 | papers on movement and dispersal, however, addressed processes at | 178 | papers on movement and dispersal, however, addressed processes at | ||
| 165 | smaller spatial scales. A good number of papers (124) explored the | 179 | smaller spatial scales. A good number of papers (124) explored the | ||
| 166 | role of road verges as habitats or providers of resources. In a subset | 180 | role of road verges as habitats or providers of resources. In a subset | ||
| 167 | of the papers, this was linked to the role of roadsides as refuges or | 181 | of the papers, this was linked to the role of roadsides as refuges or | ||
| 168 | their role in conservation. There were over 100 papers addressing | 182 | their role in conservation. There were over 100 papers addressing | ||
| 169 | demography and population processes involving a broad range of | 183 | demography and population processes involving a broad range of | ||
| 170 | measured or estimated effects and only a few in combination with | 184 | measured or estimated effects and only a few in combination with | ||
| 171 | population genetics. Edge effects were also rather well described for | 185 | population genetics. Edge effects were also rather well described for | ||
| 172 | a wide range of organisms (108 papers) sometimes linked to abiotic | 186 | a wide range of organisms (108 papers) sometimes linked to abiotic | ||
| 173 | explanatory variables. We found that, despite strong negative effects | 187 | explanatory variables. We found that, despite strong negative effects | ||
| 174 | of processes and factors such as noise, barrier effects, vehicle | 188 | of processes and factors such as noise, barrier effects, vehicle | ||
| 175 | collisions and landscape fragmentation, HTI can contain considerable | 189 | collisions and landscape fragmentation, HTI can contain considerable | ||
| 176 | biological diversity and species richness, contribute to structural | 190 | biological diversity and species richness, contribute to structural | ||
| 177 | and resource heterogeneity in the landscape, and function as corridors | 191 | and resource heterogeneity in the landscape, and function as corridors | ||
| 178 | for a diverse set of organisms. However, evidence of these | 192 | for a diverse set of organisms. However, evidence of these | ||
| 179 | contributions is fragmented, with high species-specificity in | 193 | contributions is fragmented, with high species-specificity in | ||
| 180 | responses (especially in animals), but also a strong impact of the | 194 | responses (especially in animals), but also a strong impact of the | ||
| 181 | landscape configuration and resources. A shift in focus from species | 195 | landscape configuration and resources. A shift in focus from species | ||
| 182 | occurrence to processes and functions at population and community | 196 | occurrence to processes and functions at population and community | ||
| 183 | level; addressing the importance of connectivity towards and away from | 197 | level; addressing the importance of connectivity towards and away from | ||
| 184 | the roads, integrating habitats along roads in a larger landscape; and | 198 | the roads, integrating habitats along roads in a larger landscape; and | ||
| 185 | approaches to identify and prioritise critical components and | 199 | approaches to identify and prioritise critical components and | ||
| 186 | trade-offs during road construction and maintenance are among the | 200 | trade-offs during road construction and maintenance are among the | ||
| 187 | major knowledge gaps to be addressed in future research.", | 201 | major knowledge gaps to be addressed in future research.", | ||
| 188 | "es": "Roads affects ecological processes at a range of spatial | 202 | "es": "Roads affects ecological processes at a range of spatial | ||
| 189 | scales, and studies document both negative and positive effects on | 203 | scales, and studies document both negative and positive effects on | ||
| 190 | natural capital and ecological processes. Still there are too large | 204 | natural capital and ecological processes. Still there are too large | ||
| 191 | knowledge gaps and geographic and taxonomic biases to draw conclusions | 205 | knowledge gaps and geographic and taxonomic biases to draw conclusions | ||
| 192 | and guide road authorities. We used a systematic review approach to | 206 | and guide road authorities. We used a systematic review approach to | ||
| 193 | synthesise current knowledge and identify knowledge gaps. We used a | 207 | synthesise current knowledge and identify knowledge gaps. We used a | ||
| 194 | broad search string and limited our search to the period 2008 -2018. | 208 | broad search string and limited our search to the period 2008 -2018. | ||
| 195 | This gave a total of about 2000 unique papers. Title and abstract | 209 | This gave a total of about 2000 unique papers. Title and abstract | ||
| 196 | screening reduced this to 473 papers where we included studies that | 210 | screening reduced this to 473 papers where we included studies that | ||
| 197 | estimate, model or review effects of roads on population processes, | 211 | estimate, model or review effects of roads on population processes, | ||
| 198 | demography, distribution, occurrence, abundance, biodiversity, | 212 | demography, distribution, occurrence, abundance, biodiversity, | ||
| 199 | behaviour and landscape connectivity. Papers that passed the initial | 213 | behaviour and landscape connectivity. Papers that passed the initial | ||
| 200 | screening criteria were screened on full-text, grouped into themes and | 214 | screening criteria were screened on full-text, grouped into themes and | ||
| 201 | explored in more detail to detect patterns related to geography, road | 215 | explored in more detail to detect patterns related to geography, road | ||
| 202 | types, habitat types, management and responses recorded. This grouping | 216 | types, habitat types, management and responses recorded. This grouping | ||
| 203 | was based on whether papers addressed invasive species; population | 217 | was based on whether papers addressed invasive species; population | ||
| 204 | genetics; edge effects, landscape perspectives; population processes; | 218 | genetics; edge effects, landscape perspectives; population processes; | ||
| 205 | biodiversity; dispersal and connectivity; roadside construction and | 219 | biodiversity; dispersal and connectivity; roadside construction and | ||
| 206 | management; verges as habitats and resource; ecological traps; | 220 | management; verges as habitats and resource; ecological traps; | ||
| 207 | roadkill; pollution and ecotoxicology; verges as refugees and | 221 | roadkill; pollution and ecotoxicology; verges as refugees and | ||
| 208 | conservation approaches; noise; urbanisation; or ecosystem services. | 222 | conservation approaches; noise; urbanisation; or ecosystem services. | ||
| 209 | These groups of papers were then reviewed using a narrative approach. | 223 | These groups of papers were then reviewed using a narrative approach. | ||
| 210 | Biodiversity was addressed in 175 papers as the largest category of | 224 | Biodiversity was addressed in 175 papers as the largest category of | ||
| 211 | papers, mainly with a focus on taxonomic diversity and often within a | 225 | papers, mainly with a focus on taxonomic diversity and often within a | ||
| 212 | narrow phylogenetic focus. 130 studies addressed different landscape | 226 | narrow phylogenetic focus. 130 studies addressed different landscape | ||
| 213 | perspectives, some in combination with details on fragmentation, | 227 | perspectives, some in combination with details on fragmentation, | ||
| 214 | population genetics, dispersal and connectivity. The majority of | 228 | population genetics, dispersal and connectivity. The majority of | ||
| 215 | papers on movement and dispersal, however, addressed processes at | 229 | papers on movement and dispersal, however, addressed processes at | ||
| 216 | smaller spatial scales. A good number of papers (124) explored the | 230 | smaller spatial scales. A good number of papers (124) explored the | ||
| 217 | role of road verges as habitats or providers of resources. In a subset | 231 | role of road verges as habitats or providers of resources. In a subset | ||
| 218 | of the papers, this was linked to the role of roadsides as refuges or | 232 | of the papers, this was linked to the role of roadsides as refuges or | ||
| 219 | their role in conservation. There were over 100 papers addressing | 233 | their role in conservation. There were over 100 papers addressing | ||
| 220 | demography and population processes involving a broad range of | 234 | demography and population processes involving a broad range of | ||
| 221 | measured or estimated effects and only a few in combination with | 235 | measured or estimated effects and only a few in combination with | ||
| 222 | population genetics. Edge effects were also rather well described for | 236 | population genetics. Edge effects were also rather well described for | ||
| 223 | a wide range of organisms (108 papers) sometimes linked to abiotic | 237 | a wide range of organisms (108 papers) sometimes linked to abiotic | ||
| 224 | explanatory variables. We found that, despite strong negative effects | 238 | explanatory variables. We found that, despite strong negative effects | ||
| 225 | of processes and factors such as noise, barrier effects, vehicle | 239 | of processes and factors such as noise, barrier effects, vehicle | ||
| 226 | collisions and landscape fragmentation, HTI can contain considerable | 240 | collisions and landscape fragmentation, HTI can contain considerable | ||
| 227 | biological diversity and species richness, contribute to structural | 241 | biological diversity and species richness, contribute to structural | ||
| 228 | and resource heterogeneity in the landscape, and function as corridors | 242 | and resource heterogeneity in the landscape, and function as corridors | ||
| 229 | for a diverse set of organisms. However, evidence of these | 243 | for a diverse set of organisms. However, evidence of these | ||
| 230 | contributions is fragmented, with high species-specificity in | 244 | contributions is fragmented, with high species-specificity in | ||
| 231 | responses (especially in animals), but also a strong impact of the | 245 | responses (especially in animals), but also a strong impact of the | ||
| 232 | landscape configuration and resources. A shift in focus from species | 246 | landscape configuration and resources. A shift in focus from species | ||
| 233 | occurrence to processes and functions at population and community | 247 | occurrence to processes and functions at population and community | ||
| 234 | level; addressing the importance of connectivity towards and away from | 248 | level; addressing the importance of connectivity towards and away from | ||
| 235 | the roads, integrating habitats along roads in a larger landscape; and | 249 | the roads, integrating habitats along roads in a larger landscape; and | ||
| 236 | approaches to identify and prioritise critical components and | 250 | approaches to identify and prioritise critical components and | ||
| 237 | trade-offs during road construction and maintenance are among the | 251 | trade-offs during road construction and maintenance are among the | ||
| 238 | major knowledge gaps to be addressed in future research." | 252 | major knowledge gaps to be addressed in future research." | ||
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