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En el instante 23 de junio de 2026, 16:05:02 UTC,
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Modificado el valor del campo
spatial_coverage
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en Efectos de la fragmentación de los bosques sobre los vertebrados en las mesetas Ibéricas.
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| 75 | "notes": "En este trabajo se analizan los efectos de la | 75 | "notes": "En este trabajo se analizan los efectos de la | ||
| 76 | fragmentaci\u00f3n sobre el paisaje, la estructura de la | 76 | fragmentaci\u00f3n sobre el paisaje, la estructura de la | ||
| 77 | vegetaci\u00f3n y los vertebrados de los bosques fragmentados | 77 | vegetaci\u00f3n y los vertebrados de los bosques fragmentados | ||
| 78 | ib\u00e9ricos, con especial atenci\u00f3n a los encinares (Quercus | 78 | ib\u00e9ricos, con especial atenci\u00f3n a los encinares (Quercus | ||
| 79 | ilex) (Cap\u00edtulo 1). Se realizaron estudios intensivos sobre los | 79 | ilex) (Cap\u00edtulo 1). Se realizaron estudios intensivos sobre los | ||
| 80 | efectos de la fragmentaci\u00f3n en mam\u00edferos de tama\u00f1o | 80 | efectos de la fragmentaci\u00f3n en mam\u00edferos de tama\u00f1o | ||
| 81 | medio (lagomorfos, carn\u00edvoros y ungulados), as\u00ed como en | 81 | medio (lagomorfos, carn\u00edvoros y ungulados), as\u00ed como en | ||
| 82 | especies de aves territoriales cuya escala espacial de | 82 | especies de aves territoriales cuya escala espacial de | ||
| 83 | distribuci\u00f3n pudo analizarse adecuadamente dentro del enfoque | 83 | distribuci\u00f3n pudo analizarse adecuadamente dentro del enfoque | ||
| 84 | extensivo del estudio (palomas y t\u00f3rtolas, p\u00e1jaros | 84 | extensivo del estudio (palomas y t\u00f3rtolas, p\u00e1jaros | ||
| 85 | carpinteros y paseriformes). La investigaci\u00f3n se llev\u00f3 a | 85 | carpinteros y paseriformes). La investigaci\u00f3n se llev\u00f3 a | ||
| 86 | cabo en seis archipi\u00e9lagos de encinar (conjuntos de remanentes | 86 | cabo en seis archipi\u00e9lagos de encinar (conjuntos de remanentes | ||
| 87 | forestales resultantes del proceso de fragmentaci\u00f3n forestal): | 87 | forestales resultantes del proceso de fragmentaci\u00f3n forestal): | ||
| 88 | cuatro de ellos se localizan en la meseta norte de la Pen\u00ednsula | 88 | cuatro de ellos se localizan en la meseta norte de la Pen\u00ednsula | ||
| 89 | Ib\u00e9rica y los dos restantes en la meseta sur. Adem\u00e1s, para | 89 | Ib\u00e9rica y los dos restantes en la meseta sur. Adem\u00e1s, para | ||
| 90 | complementar el estudio se consideraron dos archipi\u00e9lagos de | 90 | complementar el estudio se consideraron dos archipi\u00e9lagos de | ||
| 91 | plantaciones de pino (Pinus pinea, P. Pinaster y P. Halepensis) (uno | 91 | plantaciones de pino (Pinus pinea, P. Pinaster y P. Halepensis) (uno | ||
| 92 | en cada meseta), un archipi\u00e9lago subcant\u00e1brico de roble | 92 | en cada meseta), un archipi\u00e9lago subcant\u00e1brico de roble | ||
| 93 | melojo (Quercus pyrenaica) y un archipi\u00e9lago mixto de | 93 | melojo (Quercus pyrenaica) y un archipi\u00e9lago mixto de | ||
| 94 | caducifolios (Quercus robur, Quercus faginea, Fraxinus spp.) situados | 94 | caducifolios (Quercus robur, Quercus faginea, Fraxinus spp.) situados | ||
| 95 | en la llanura alavesa (norte de Espa\u00f1a). En total, la | 95 | en la llanura alavesa (norte de Espa\u00f1a). En total, la | ||
| 96 | vegetaci\u00f3n y la fauna vertebrada se muestrearon en 367 fragmentos | 96 | vegetaci\u00f3n y la fauna vertebrada se muestrearon en 367 fragmentos | ||
| 97 | forestales, de los cuales 214 eran encinares, 91 eran pinares, 38 eran | 97 | forestales, de los cuales 214 eran encinares, 91 eran pinares, 38 eran | ||
| 98 | rebollares y 24 eran bosques caducifolios mixtos (Cap\u00edtulo 2). El | 98 | rebollares y 24 eran bosques caducifolios mixtos (Cap\u00edtulo 2). El | ||
| 99 | an\u00e1lisis de la estructura del paisaje (Cap\u00edtulo 3) | 99 | an\u00e1lisis de la estructura del paisaje (Cap\u00edtulo 3) | ||
| 100 | revel\u00f3 que el proceso de fragmentaci\u00f3n se encuentra en una | 100 | revel\u00f3 que el proceso de fragmentaci\u00f3n se encuentra en una | ||
| 101 | fase avanzada en los encinares de las mesetas ib\u00e9ricas. Casi el | 101 | fase avanzada en los encinares de las mesetas ib\u00e9ricas. Casi el | ||
| 102 | 65% de las masas forestales tienen una extensi\u00f3n inferior a 2 ha, | 102 | 65% de las masas forestales tienen una extensi\u00f3n inferior a 2 ha, | ||
| 103 | por lo que predominan sobre los bosques de mayor tama\u00f1o. | 103 | por lo que predominan sobre los bosques de mayor tama\u00f1o. | ||
| 104 | Adem\u00e1s, los fragmentos forestales est\u00e1n aislados de los | 104 | Adem\u00e1s, los fragmentos forestales est\u00e1n aislados de los | ||
| 105 | grandes bosques, como demuestra el hecho de que el bosque m\u00e1s | 105 | grandes bosques, como demuestra el hecho de que el bosque m\u00e1s | ||
| 106 | cercano de m\u00e1s de 100 ha se encuentra generalmente a varios | 106 | cercano de m\u00e1s de 100 ha se encuentra generalmente a varios | ||
| 107 | kil\u00f3metros de distancia de cualquier fragmento. La | 107 | kil\u00f3metros de distancia de cualquier fragmento. La | ||
| 108 | vegetaci\u00f3n de los encinares de las mesetas ib\u00e9ricas | 108 | vegetaci\u00f3n de los encinares de las mesetas ib\u00e9ricas | ||
| 109 | est\u00e1 generalmente degradada (escaso desarrollo vertical y baja | 109 | est\u00e1 generalmente degradada (escaso desarrollo vertical y baja | ||
| 110 | cobertura arb\u00f3rea), aunque se han encontrado tendencias | 110 | cobertura arb\u00f3rea), aunque se han encontrado tendencias | ||
| 111 | cambiantes en relaci\u00f3n con el tama\u00f1o del fragmento | 111 | cambiantes en relaci\u00f3n con el tama\u00f1o del fragmento | ||
| 112 | (Cap\u00edtulo 3). Estas tendencias, que fueron las mismas para ambas | 112 | (Cap\u00edtulo 3). Estas tendencias, que fueron las mismas para ambas | ||
| 113 | mesetas, consisten en aumentos de la cobertura arbustiva de hierbas y | 113 | mesetas, consisten en aumentos de la cobertura arbustiva de hierbas y | ||
| 114 | \u00e1rboles a medida que aumenta el tama\u00f1o del fragmento. Se | 114 | \u00e1rboles a medida que aumenta el tama\u00f1o del fragmento. Se | ||
| 115 | sugiere que dichas tendencias podr\u00edan deberse a complejas | 115 | sugiere que dichas tendencias podr\u00edan deberse a complejas | ||
| 116 | interacciones entre factores ambientales y presi\u00f3n humana que, | 116 | interacciones entre factores ambientales y presi\u00f3n humana que, | ||
| 117 | aunque intensas en todos los casos, var\u00edan con el tama\u00f1o del | 117 | aunque intensas en todos los casos, var\u00edan con el tama\u00f1o del | ||
| 118 | fragmento. El desarrollo de la vegetaci\u00f3n y y su grado de | 118 | fragmento. El desarrollo de la vegetaci\u00f3n y y su grado de | ||
| 119 | conservaci\u00f3n y son mejores en los encinares de la meseta norte | 119 | conservaci\u00f3n y son mejores en los encinares de la meseta norte | ||
| 120 | que en los bosques de la meseta sur, por lo que los fragmentos del | 120 | que en los bosques de la meseta sur, por lo que los fragmentos del | ||
| 121 | norte parecen proporcionar h\u00e1bitats de mejor calidad para los | 121 | norte parecen proporcionar h\u00e1bitats de mejor calidad para los | ||
| 122 | vertebrados forestales. La fragmentaci\u00f3n de los encinares | 122 | vertebrados forestales. La fragmentaci\u00f3n de los encinares | ||
| 123 | conlleva efectos negativos sobre la mayor\u00eda de las especies de | 123 | conlleva efectos negativos sobre la mayor\u00eda de las especies de | ||
| 124 | aves forestales (Cap\u00edtulo 4). Las aves se ven m\u00e1s afectadas | 124 | aves forestales (Cap\u00edtulo 4). Las aves se ven m\u00e1s afectadas | ||
| 125 | por la fragmentaci\u00f3n del encinar en las mesetas meridionales. | 125 | por la fragmentaci\u00f3n del encinar en las mesetas meridionales. | ||
| 126 | Este hecho apoya la hip\u00f3tesis de una menor calidad del | 126 | Este hecho apoya la hip\u00f3tesis de una menor calidad del | ||
| 127 | h\u00e1bitat de los encinares meridionales en comparaci\u00f3n con los | 127 | h\u00e1bitat de los encinares meridionales en comparaci\u00f3n con los | ||
| 128 | encinares situados en las mesetas septentrionales. Adem\u00e1s, | 128 | encinares situados en las mesetas septentrionales. Adem\u00e1s, | ||
| 129 | s\u00f3lo se encontr\u00f3 una especie nidificando exclusivamente en | 129 | s\u00f3lo se encontr\u00f3 una especie nidificando exclusivamente en | ||
| 130 | los encinares del sur, mientras que 12 de las 27 especies (44%) | 130 | los encinares del sur, mientras que 12 de las 27 especies (44%) | ||
| 131 | registradas nidificando en los encinares del norte no se encontraron | 131 | registradas nidificando en los encinares del norte no se encontraron | ||
| 132 | en absoluto en el sur. Las funciones de incidencia (proporci\u00f3n de | 132 | en absoluto en el sur. Las funciones de incidencia (proporci\u00f3n de | ||
| 133 | masas arboladas ocupadas en relaci\u00f3n con el tama\u00f1o de la | 133 | masas arboladas ocupadas en relaci\u00f3n con el tama\u00f1o de la | ||
| 134 | masa arbolada) revelaron que los requisitos territoriales de la | 134 | masa arbolada) revelaron que los requisitos territoriales de la | ||
| 135 | mayor\u00eda de las especies no se satisfacen en los fragmentos | 135 | mayor\u00eda de las especies no se satisfacen en los fragmentos | ||
| 136 | m\u00e1s peque\u00f1os, pero actualmente m\u00e1s comunes (<2 ha), | 136 | m\u00e1s peque\u00f1os, pero actualmente m\u00e1s comunes (<2 ha), | ||
| 137 | mientras que m\u00e1s del 80% de las especies de aves cr\u00edan | 137 | mientras que m\u00e1s del 80% de las especies de aves cr\u00edan | ||
| 138 | habitualmente en los fragmentos m\u00e1s grandes (>100 ha), aunque | 138 | habitualmente en los fragmentos m\u00e1s grandes (>100 ha), aunque | ||
| 139 | estos fragmentos tan grandes son ahora extremadamente infrecuentes. | 139 | estos fragmentos tan grandes son ahora extremadamente infrecuentes. | ||
| 140 | Una proporci\u00f3n aceptable (al menos el 20%) de fragmentos con | 140 | Una proporci\u00f3n aceptable (al menos el 20%) de fragmentos con | ||
| 141 | tama\u00f1os intermedios alberga individuos reproductores del 50% de | 141 | tama\u00f1os intermedios alberga individuos reproductores del 50% de | ||
| 142 | las especies de aves forestales encontradas. Tales fragmentos de | 142 | las especies de aves forestales encontradas. Tales fragmentos de | ||
| 143 | tama\u00f1o medio representan m\u00e1s del 30% de los encinares que se | 143 | tama\u00f1o medio representan m\u00e1s del 30% de los encinares que se | ||
| 144 | encuentran actualmente en las mesetas ib\u00e9ricas.\n Palabras clave: | 144 | encuentran actualmente en las mesetas ib\u00e9ricas.\n Palabras clave: | ||
| 145 | Tierras agr\u00edcolas, Aves, Bosques de con\u00edferas, Bosques | 145 | Tierras agr\u00edcolas, Aves, Bosques de con\u00edferas, Bosques | ||
| 146 | caducifolios, Borde, \n Bosque, Fragmentaci\u00f3n, H\u00e1bitat, | 146 | caducifolios, Borde, \n Bosque, Fragmentaci\u00f3n, H\u00e1bitat, | ||
| 147 | Fragmentaci\u00f3n de h\u00e1bitat, Aislamiento, Paisaje, | 147 | Fragmentaci\u00f3n de h\u00e1bitat, Aislamiento, Paisaje, | ||
| 148 | Mam\u00edfero, Rat\u00f3n, Din\u00e1mica poblacional, Vegetaci\u00f3n, | 148 | Mam\u00edfero, Rat\u00f3n, Din\u00e1mica poblacional, Vegetaci\u00f3n, | ||
| 149 | Vertebrados, Bosques", | 149 | Vertebrados, Bosques", | ||
| 150 | "notes_translated": { | 150 | "notes_translated": { | ||
| 151 | "en": "This work analyses the effects of fragmentation on the | 151 | "en": "This work analyses the effects of fragmentation on the | ||
| 152 | landscape, vegetation structure and the vertebrates of Iberian | 152 | landscape, vegetation structure and the vertebrates of Iberian | ||
| 153 | fragmented forests, with particular emphasis on Holm oak (Quercus | 153 | fragmented forests, with particular emphasis on Holm oak (Quercus | ||
| 154 | ilex) woods (Chapter 1). Intensive studies were performed on the | 154 | ilex) woods (Chapter 1). Intensive studies were performed on the | ||
| 155 | effects of fragmentation on meduim-sized mammals (lagomorphs, | 155 | effects of fragmentation on meduim-sized mammals (lagomorphs, | ||
| 156 | carnivores and ungulates), as well as on territorial bird species | 156 | carnivores and ungulates), as well as on territorial bird species | ||
| 157 | whose spatial scale of distribution could be analysed properly within | 157 | whose spatial scale of distribution could be analysed properly within | ||
| 158 | the extensive approach of the study (doves and pigeons, woodpeckers | 158 | the extensive approach of the study (doves and pigeons, woodpeckers | ||
| 159 | and passerines). Research was conducted in six Holm oak archipelagos | 159 | and passerines). Research was conducted in six Holm oak archipelagos | ||
| 160 | (groups of forest remnants resulting from the process of forest | 160 | (groups of forest remnants resulting from the process of forest | ||
| 161 | fragmentation): four of them are located in the northern plateau of | 161 | fragmentation): four of them are located in the northern plateau of | ||
| 162 | the Iberian peninsula and the remaining two in the southern plateau. | 162 | the Iberian peninsula and the remaining two in the southern plateau. | ||
| 163 | In addition, two archipelagos of pine (Pinus pinea, P. Pinaster and P. | 163 | In addition, two archipelagos of pine (Pinus pinea, P. Pinaster and P. | ||
| 164 | Halepensis) plantations (one in each plateau), a sub-Cantabrian | 164 | Halepensis) plantations (one in each plateau), a sub-Cantabrian | ||
| 165 | Pyrenean oak (Quercus pyrenaica) archipelago, and a mixed deciduous | 165 | Pyrenean oak (Quercus pyrenaica) archipelago, and a mixed deciduous | ||
| 166 | archipelago (Quercus robur, Quercus faginea, Fraxinus spp.) located in | 166 | archipelago (Quercus robur, Quercus faginea, Fraxinus spp.) located in | ||
| 167 | the Alava plains (northern Spain) were also considered to compliment | 167 | the Alava plains (northern Spain) were also considered to compliment | ||
| 168 | the study. Overall, the vegetation and vertebrate fauna were sampled | 168 | the study. Overall, the vegetation and vertebrate fauna were sampled | ||
| 169 | in 367 forest fragments, out of which 214 were Holm oak woods, 91 were | 169 | in 367 forest fragments, out of which 214 were Holm oak woods, 91 were | ||
| 170 | pine plantations, 38 were Pyrenean oak woods, and 24 were mixed | 170 | pine plantations, 38 were Pyrenean oak woods, and 24 were mixed | ||
| 171 | deciduous woods (Chapter 2).\nThe analysis of the landscape structure | 171 | deciduous woods (Chapter 2).\nThe analysis of the landscape structure | ||
| 172 | (Chapter 3) revealed that the fragmentation process is in an advanced | 172 | (Chapter 3) revealed that the fragmentation process is in an advanced | ||
| 173 | stage in the Holm oak woodlands of the Iberian plateaux. Almost 65% of | 173 | stage in the Holm oak woodlands of the Iberian plateaux. Almost 65% of | ||
| 174 | woodlots are less than 2 ha in extent, so that they predominate over | 174 | woodlots are less than 2 ha in extent, so that they predominate over | ||
| 175 | larger woods. Further, forest fragments are isolated from large | 175 | larger woods. Further, forest fragments are isolated from large | ||
| 176 | woodlands, as shown by the fact that the nearest wood larger than 100 | 176 | woodlands, as shown by the fact that the nearest wood larger than 100 | ||
| 177 | ha is generally found several kilometres apart from any given | 177 | ha is generally found several kilometres apart from any given | ||
| 178 | fragment. The vegetation of the Holm oak woodlands of the Iberian | 178 | fragment. The vegetation of the Holm oak woodlands of the Iberian | ||
| 179 | plateaux is generally degraded (little vertical development and low | 179 | plateaux is generally degraded (little vertical development and low | ||
| 180 | tree cover), although changing trends were found in relation to | 180 | tree cover), although changing trends were found in relation to | ||
| 181 | fragment size (Chapter 3). These trends, which were the same for both | 181 | fragment size (Chapter 3). These trends, which were the same for both | ||
| 182 | plateaux, consist of increases in shrub covers of herbs and trees as | 182 | plateaux, consist of increases in shrub covers of herbs and trees as | ||
| 183 | fragment size increases. It is suggested that such trends could be due | 183 | fragment size increases. It is suggested that such trends could be due | ||
| 184 | to complex interactions between environmental factors and human | 184 | to complex interactions between environmental factors and human | ||
| 185 | pressure which, while intense in every case, vary with the fragment | 185 | pressure which, while intense in every case, vary with the fragment | ||
| 186 | size. The development of the vegetation and and its degree of | 186 | size. The development of the vegetation and and its degree of | ||
| 187 | conservation and are better in the Holm oak woodlands of the northern | 187 | conservation and are better in the Holm oak woodlands of the northern | ||
| 188 | plateau than in the woodlands of the southern plateau, so that | 188 | plateau than in the woodlands of the southern plateau, so that | ||
| 189 | northern fragments seem to provide habitats of better quality for | 189 | northern fragments seem to provide habitats of better quality for | ||
| 190 | forest vertebrates.\nThe fragmentation of Holm oak woods entails | 190 | forest vertebrates.\nThe fragmentation of Holm oak woods entails | ||
| 191 | negative effects on most species of forest birds (Chapter 4). Birds | 191 | negative effects on most species of forest birds (Chapter 4). Birds | ||
| 192 | are most heavily affected by Holm oak wood fragmentation on the | 192 | are most heavily affected by Holm oak wood fragmentation on the | ||
| 193 | southern plateaux. This fact supports the hypothesis of a lower | 193 | southern plateaux. This fact supports the hypothesis of a lower | ||
| 194 | habitat quality of southern woodlots as compared to woodlots located | 194 | habitat quality of southern woodlots as compared to woodlots located | ||
| 195 | on the northern plateaux. Further, only one species was found nesting | 195 | on the northern plateaux. Further, only one species was found nesting | ||
| 196 | on exclusively in the southern Holm oak woods, while 12 out of the 27 | 196 | on exclusively in the southern Holm oak woods, while 12 out of the 27 | ||
| 197 | species (44%) recorded nesting in the northern Holm oak woods were not | 197 | species (44%) recorded nesting in the northern Holm oak woods were not | ||
| 198 | found in the south at all. Incidence functions (proportion of occupied | 198 | found in the south at all. Incidence functions (proportion of occupied | ||
| 199 | woodlots in relation to woodlot size) revealed that the territorial | 199 | woodlots in relation to woodlot size) revealed that the territorial | ||
| 200 | requirements of most species are not satisfied by the smallest, but | 200 | requirements of most species are not satisfied by the smallest, but | ||
| 201 | currently commonest, fragments (<2 ha) while over 80% of the bird | 201 | currently commonest, fragments (<2 ha) while over 80% of the bird | ||
| 202 | species habitually breed in the larger (>100 ha) fragmets, although | 202 | species habitually breed in the larger (>100 ha) fragmets, although | ||
| 203 | such large fragments are now extremely uncommon. A acceptable | 203 | such large fragments are now extremely uncommon. A acceptable | ||
| 204 | proportion (at least 20%) of fragments with intermediate sizes hosts | 204 | proportion (at least 20%) of fragments with intermediate sizes hosts | ||
| 205 | breeding individuals from 50% of the forest bird species found. Such | 205 | breeding individuals from 50% of the forest bird species found. Such | ||
| 206 | medium-sized fragments account for more than 30% of the Holm oak | 206 | medium-sized fragments account for more than 30% of the Holm oak | ||
| 207 | woodlands currently found in the Iberian plateaux.\nPine plantations | 207 | woodlands currently found in the Iberian plateaux.\nPine plantations | ||
| 208 | are widespread forest habitats on both Iberian plateaux, and its | 208 | are widespread forest habitats on both Iberian plateaux, and its | ||
| 209 | extent has clear prospects of increasing in the near future, so that | 209 | extent has clear prospects of increasing in the near future, so that | ||
| 210 | its analysis is particularly relevant in", | 210 | its analysis is particularly relevant in", | ||
| 211 | "es": "En este trabajo se analizan los efectos de la | 211 | "es": "En este trabajo se analizan los efectos de la | ||
| 212 | fragmentaci\u00f3n sobre el paisaje, la estructura de la | 212 | fragmentaci\u00f3n sobre el paisaje, la estructura de la | ||
| 213 | vegetaci\u00f3n y los vertebrados de los bosques fragmentados | 213 | vegetaci\u00f3n y los vertebrados de los bosques fragmentados | ||
| 214 | ib\u00e9ricos, con especial atenci\u00f3n a los encinares (Quercus | 214 | ib\u00e9ricos, con especial atenci\u00f3n a los encinares (Quercus | ||
| 215 | ilex) (Cap\u00edtulo 1). Se realizaron estudios intensivos sobre los | 215 | ilex) (Cap\u00edtulo 1). Se realizaron estudios intensivos sobre los | ||
| 216 | efectos de la fragmentaci\u00f3n en mam\u00edferos de tama\u00f1o | 216 | efectos de la fragmentaci\u00f3n en mam\u00edferos de tama\u00f1o | ||
| 217 | medio (lagomorfos, carn\u00edvoros y ungulados), as\u00ed como en | 217 | medio (lagomorfos, carn\u00edvoros y ungulados), as\u00ed como en | ||
| 218 | especies de aves territoriales cuya escala espacial de | 218 | especies de aves territoriales cuya escala espacial de | ||
| 219 | distribuci\u00f3n pudo analizarse adecuadamente dentro del enfoque | 219 | distribuci\u00f3n pudo analizarse adecuadamente dentro del enfoque | ||
| 220 | extensivo del estudio (palomas y t\u00f3rtolas, p\u00e1jaros | 220 | extensivo del estudio (palomas y t\u00f3rtolas, p\u00e1jaros | ||
| 221 | carpinteros y paseriformes). La investigaci\u00f3n se llev\u00f3 a | 221 | carpinteros y paseriformes). La investigaci\u00f3n se llev\u00f3 a | ||
| 222 | cabo en seis archipi\u00e9lagos de encinar (conjuntos de remanentes | 222 | cabo en seis archipi\u00e9lagos de encinar (conjuntos de remanentes | ||
| 223 | forestales resultantes del proceso de fragmentaci\u00f3n forestal): | 223 | forestales resultantes del proceso de fragmentaci\u00f3n forestal): | ||
| 224 | cuatro de ellos se localizan en la meseta norte de la Pen\u00ednsula | 224 | cuatro de ellos se localizan en la meseta norte de la Pen\u00ednsula | ||
| 225 | Ib\u00e9rica y los dos restantes en la meseta sur. Adem\u00e1s, para | 225 | Ib\u00e9rica y los dos restantes en la meseta sur. Adem\u00e1s, para | ||
| 226 | complementar el estudio se consideraron dos archipi\u00e9lagos de | 226 | complementar el estudio se consideraron dos archipi\u00e9lagos de | ||
| 227 | plantaciones de pino (Pinus pinea, P. Pinaster y P. Halepensis) (uno | 227 | plantaciones de pino (Pinus pinea, P. Pinaster y P. Halepensis) (uno | ||
| 228 | en cada meseta), un archipi\u00e9lago subcant\u00e1brico de roble | 228 | en cada meseta), un archipi\u00e9lago subcant\u00e1brico de roble | ||
| 229 | melojo (Quercus pyrenaica) y un archipi\u00e9lago mixto de | 229 | melojo (Quercus pyrenaica) y un archipi\u00e9lago mixto de | ||
| 230 | caducifolios (Quercus robur, Quercus faginea, Fraxinus spp.) situados | 230 | caducifolios (Quercus robur, Quercus faginea, Fraxinus spp.) situados | ||
| 231 | en la llanura alavesa (norte de Espa\u00f1a). En total, la | 231 | en la llanura alavesa (norte de Espa\u00f1a). En total, la | ||
| 232 | vegetaci\u00f3n y la fauna vertebrada se muestrearon en 367 fragmentos | 232 | vegetaci\u00f3n y la fauna vertebrada se muestrearon en 367 fragmentos | ||
| 233 | forestales, de los cuales 214 eran encinares, 91 eran pinares, 38 eran | 233 | forestales, de los cuales 214 eran encinares, 91 eran pinares, 38 eran | ||
| 234 | rebollares y 24 eran bosques caducifolios mixtos (Cap\u00edtulo 2). El | 234 | rebollares y 24 eran bosques caducifolios mixtos (Cap\u00edtulo 2). El | ||
| 235 | an\u00e1lisis de la estructura del paisaje (Cap\u00edtulo 3) | 235 | an\u00e1lisis de la estructura del paisaje (Cap\u00edtulo 3) | ||
| 236 | revel\u00f3 que el proceso de fragmentaci\u00f3n se encuentra en una | 236 | revel\u00f3 que el proceso de fragmentaci\u00f3n se encuentra en una | ||
| 237 | fase avanzada en los encinares de las mesetas ib\u00e9ricas. Casi el | 237 | fase avanzada en los encinares de las mesetas ib\u00e9ricas. Casi el | ||
| 238 | 65% de las masas forestales tienen una extensi\u00f3n inferior a 2 ha, | 238 | 65% de las masas forestales tienen una extensi\u00f3n inferior a 2 ha, | ||
| 239 | por lo que predominan sobre los bosques de mayor tama\u00f1o. | 239 | por lo que predominan sobre los bosques de mayor tama\u00f1o. | ||
| 240 | Adem\u00e1s, los fragmentos forestales est\u00e1n aislados de los | 240 | Adem\u00e1s, los fragmentos forestales est\u00e1n aislados de los | ||
| 241 | grandes bosques, como demuestra el hecho de que el bosque m\u00e1s | 241 | grandes bosques, como demuestra el hecho de que el bosque m\u00e1s | ||
| 242 | cercano de m\u00e1s de 100 ha se encuentra generalmente a varios | 242 | cercano de m\u00e1s de 100 ha se encuentra generalmente a varios | ||
| 243 | kil\u00f3metros de distancia de cualquier fragmento. La | 243 | kil\u00f3metros de distancia de cualquier fragmento. La | ||
| 244 | vegetaci\u00f3n de los encinares de las mesetas ib\u00e9ricas | 244 | vegetaci\u00f3n de los encinares de las mesetas ib\u00e9ricas | ||
| 245 | est\u00e1 generalmente degradada (escaso desarrollo vertical y baja | 245 | est\u00e1 generalmente degradada (escaso desarrollo vertical y baja | ||
| 246 | cobertura arb\u00f3rea), aunque se han encontrado tendencias | 246 | cobertura arb\u00f3rea), aunque se han encontrado tendencias | ||
| 247 | cambiantes en relaci\u00f3n con el tama\u00f1o del fragmento | 247 | cambiantes en relaci\u00f3n con el tama\u00f1o del fragmento | ||
| 248 | (Cap\u00edtulo 3). Estas tendencias, que fueron las mismas para ambas | 248 | (Cap\u00edtulo 3). Estas tendencias, que fueron las mismas para ambas | ||
| 249 | mesetas, consisten en aumentos de la cobertura arbustiva de hierbas y | 249 | mesetas, consisten en aumentos de la cobertura arbustiva de hierbas y | ||
| 250 | \u00e1rboles a medida que aumenta el tama\u00f1o del fragmento. Se | 250 | \u00e1rboles a medida que aumenta el tama\u00f1o del fragmento. Se | ||
| 251 | sugiere que dichas tendencias podr\u00edan deberse a complejas | 251 | sugiere que dichas tendencias podr\u00edan deberse a complejas | ||
| 252 | interacciones entre factores ambientales y presi\u00f3n humana que, | 252 | interacciones entre factores ambientales y presi\u00f3n humana que, | ||
| 253 | aunque intensas en todos los casos, var\u00edan con el tama\u00f1o del | 253 | aunque intensas en todos los casos, var\u00edan con el tama\u00f1o del | ||
| 254 | fragmento. El desarrollo de la vegetaci\u00f3n y y su grado de | 254 | fragmento. El desarrollo de la vegetaci\u00f3n y y su grado de | ||
| 255 | conservaci\u00f3n y son mejores en los encinares de la meseta norte | 255 | conservaci\u00f3n y son mejores en los encinares de la meseta norte | ||
| 256 | que en los bosques de la meseta sur, por lo que los fragmentos del | 256 | que en los bosques de la meseta sur, por lo que los fragmentos del | ||
| 257 | norte parecen proporcionar h\u00e1bitats de mejor calidad para los | 257 | norte parecen proporcionar h\u00e1bitats de mejor calidad para los | ||
| 258 | vertebrados forestales. La fragmentaci\u00f3n de los encinares | 258 | vertebrados forestales. La fragmentaci\u00f3n de los encinares | ||
| 259 | conlleva efectos negativos sobre la mayor\u00eda de las especies de | 259 | conlleva efectos negativos sobre la mayor\u00eda de las especies de | ||
| 260 | aves forestales (Cap\u00edtulo 4). Las aves se ven m\u00e1s afectadas | 260 | aves forestales (Cap\u00edtulo 4). Las aves se ven m\u00e1s afectadas | ||
| 261 | por la fragmentaci\u00f3n del encinar en las mesetas meridionales. | 261 | por la fragmentaci\u00f3n del encinar en las mesetas meridionales. | ||
| 262 | Este hecho apoya la hip\u00f3tesis de una menor calidad del | 262 | Este hecho apoya la hip\u00f3tesis de una menor calidad del | ||
| 263 | h\u00e1bitat de los encinares meridionales en comparaci\u00f3n con los | 263 | h\u00e1bitat de los encinares meridionales en comparaci\u00f3n con los | ||
| 264 | encinares situados en las mesetas septentrionales. Adem\u00e1s, | 264 | encinares situados en las mesetas septentrionales. Adem\u00e1s, | ||
| 265 | s\u00f3lo se encontr\u00f3 una especie nidificando exclusivamente en | 265 | s\u00f3lo se encontr\u00f3 una especie nidificando exclusivamente en | ||
| 266 | los encinares del sur, mientras que 12 de las 27 especies (44%) | 266 | los encinares del sur, mientras que 12 de las 27 especies (44%) | ||
| 267 | registradas nidificando en los encinares del norte no se encontraron | 267 | registradas nidificando en los encinares del norte no se encontraron | ||
| 268 | en absoluto en el sur. Las funciones de incidencia (proporci\u00f3n de | 268 | en absoluto en el sur. Las funciones de incidencia (proporci\u00f3n de | ||
| 269 | masas arboladas ocupadas en relaci\u00f3n con el tama\u00f1o de la | 269 | masas arboladas ocupadas en relaci\u00f3n con el tama\u00f1o de la | ||
| 270 | masa arbolada) revelaron que los requisitos territoriales de la | 270 | masa arbolada) revelaron que los requisitos territoriales de la | ||
| 271 | mayor\u00eda de las especies no se satisfacen en los fragmentos | 271 | mayor\u00eda de las especies no se satisfacen en los fragmentos | ||
| 272 | m\u00e1s peque\u00f1os, pero actualmente m\u00e1s comunes (<2 ha), | 272 | m\u00e1s peque\u00f1os, pero actualmente m\u00e1s comunes (<2 ha), | ||
| 273 | mientras que m\u00e1s del 80% de las especies de aves cr\u00edan | 273 | mientras que m\u00e1s del 80% de las especies de aves cr\u00edan | ||
| 274 | habitualmente en los fragmentos m\u00e1s grandes (>100 ha), aunque | 274 | habitualmente en los fragmentos m\u00e1s grandes (>100 ha), aunque | ||
| 275 | estos fragmentos tan grandes son ahora extremadamente infrecuentes. | 275 | estos fragmentos tan grandes son ahora extremadamente infrecuentes. | ||
| 276 | Una proporci\u00f3n aceptable (al menos el 20%) de fragmentos con | 276 | Una proporci\u00f3n aceptable (al menos el 20%) de fragmentos con | ||
| 277 | tama\u00f1os intermedios alberga individuos reproductores del 50% de | 277 | tama\u00f1os intermedios alberga individuos reproductores del 50% de | ||
| 278 | las especies de aves forestales encontradas. Tales fragmentos de | 278 | las especies de aves forestales encontradas. Tales fragmentos de | ||
| 279 | tama\u00f1o medio representan m\u00e1s del 30% de los encinares que se | 279 | tama\u00f1o medio representan m\u00e1s del 30% de los encinares que se | ||
| 280 | encuentran actualmente en las mesetas ib\u00e9ricas.\n Palabras clave: | 280 | encuentran actualmente en las mesetas ib\u00e9ricas.\n Palabras clave: | ||
| 281 | Tierras agr\u00edcolas, Aves, Bosques de con\u00edferas, Bosques | 281 | Tierras agr\u00edcolas, Aves, Bosques de con\u00edferas, Bosques | ||
| 282 | caducifolios, Borde, \n Bosque, Fragmentaci\u00f3n, H\u00e1bitat, | 282 | caducifolios, Borde, \n Bosque, Fragmentaci\u00f3n, H\u00e1bitat, | ||
| 283 | Fragmentaci\u00f3n de h\u00e1bitat, Aislamiento, Paisaje, | 283 | Fragmentaci\u00f3n de h\u00e1bitat, Aislamiento, Paisaje, | ||
| 284 | Mam\u00edfero, Rat\u00f3n, Din\u00e1mica poblacional, Vegetaci\u00f3n, | 284 | Mam\u00edfero, Rat\u00f3n, Din\u00e1mica poblacional, Vegetaci\u00f3n, | ||
| 285 | Vertebrados, Bosques" | 285 | Vertebrados, Bosques" | ||
| 286 | }, | 286 | }, | ||
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| 445 | "state": "active", | 416 | "state": "active", | ||
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| 447 | }, | 418 | }, | ||
| 448 | { | 419 | { | ||
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| 452 | "state": "active", | 423 | "state": "active", | ||
| 453 | "vocabulary_id": null | 424 | "vocabulary_id": null | ||
| 454 | }, | 425 | }, | ||
| 455 | { | 426 | { | ||
| 456 | "display_name": "bosque", | 427 | "display_name": "bosque", | ||
| 457 | "id": "47b2aa2a-4cbb-4d71-8ce0-bc0963af6f84", | 428 | "id": "47b2aa2a-4cbb-4d71-8ce0-bc0963af6f84", | ||
| 458 | "name": "bosque", | 429 | "name": "bosque", | ||
| 459 | "state": "active", | 430 | "state": "active", | ||
| 460 | "vocabulary_id": null | 431 | "vocabulary_id": null | ||
| 461 | }, | 432 | }, | ||
| 462 | { | 433 | { | ||
| 463 | "display_name": "bosques", | 434 | "display_name": "bosques", | ||
| 464 | "id": "d373e745-7ec9-4836-9d3d-b50f288934c7", | 435 | "id": "d373e745-7ec9-4836-9d3d-b50f288934c7", | ||
| 465 | "name": "bosques", | 436 | "name": "bosques", | ||
| 466 | "state": "active", | 437 | "state": "active", | ||
| 467 | "vocabulary_id": null | 438 | "vocabulary_id": null | ||
| 468 | }, | 439 | }, | ||
| 469 | { | 440 | { | ||
| 470 | "display_name": "bosques-caducifolios", | 441 | "display_name": "bosques-caducifolios", | ||
| 471 | "id": "4c5e8a9a-86ec-4829-b5de-33846ead5d74", | 442 | "id": "4c5e8a9a-86ec-4829-b5de-33846ead5d74", | ||
| 472 | "name": "bosques-caducifolios", | 443 | "name": "bosques-caducifolios", | ||
| 473 | "state": "active", | 444 | "state": "active", | ||
| 474 | "vocabulary_id": null | 445 | "vocabulary_id": null | ||
| 475 | }, | 446 | }, | ||
| 476 | { | 447 | { | ||
| 477 | "display_name": "bosques-de-coniferas", | 448 | "display_name": "bosques-de-coniferas", | ||
| 478 | "id": "852026a1-b98e-4951-bff6-5b92ca752a5f", | 449 | "id": "852026a1-b98e-4951-bff6-5b92ca752a5f", | ||
| 479 | "name": "bosques-de-coniferas", | 450 | "name": "bosques-de-coniferas", | ||
| 480 | "state": "active", | 451 | "state": "active", | ||
| 481 | "vocabulary_id": null | 452 | "vocabulary_id": null | ||
| 482 | }, | 453 | }, | ||
| 483 | { | 454 | { | ||
| 484 | "display_name": "dinamica-de-poblaciones", | 455 | "display_name": "dinamica-de-poblaciones", | ||
| 485 | "id": "41aa5123-424d-4548-8c65-1d0108ee90d1", | 456 | "id": "41aa5123-424d-4548-8c65-1d0108ee90d1", | ||
| 486 | "name": "dinamica-de-poblaciones", | 457 | "name": "dinamica-de-poblaciones", | ||
| 487 | "state": "active", | 458 | "state": "active", | ||
| 488 | "vocabulary_id": null | 459 | "vocabulary_id": null | ||
| 489 | }, | 460 | }, | ||
| 490 | { | 461 | { | ||
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| 492 | "id": "627f9c0a-a199-4c69-b563-0c8d626e3194", | 463 | "id": "627f9c0a-a199-4c69-b563-0c8d626e3194", | ||
| 493 | "name": "fragmentacion", | 464 | "name": "fragmentacion", | ||
| 494 | "state": "active", | 465 | "state": "active", | ||
| 495 | "vocabulary_id": null | 466 | "vocabulary_id": null | ||
| 496 | }, | 467 | }, | ||
| 497 | { | 468 | { | ||
| 498 | "display_name": "fragmentacion-del-habitat", | 469 | "display_name": "fragmentacion-del-habitat", | ||
| 499 | "id": "5b7faea2-e2cd-4f1a-b7c1-ced4e0b75a16", | 470 | "id": "5b7faea2-e2cd-4f1a-b7c1-ced4e0b75a16", | ||
| 500 | "name": "fragmentacion-del-habitat", | 471 | "name": "fragmentacion-del-habitat", | ||
| 501 | "state": "active", | 472 | "state": "active", | ||
| 502 | "vocabulary_id": null | 473 | "vocabulary_id": null | ||
| 503 | }, | 474 | }, | ||
| 504 | { | 475 | { | ||
| 505 | "display_name": "habitat", | 476 | "display_name": "habitat", | ||
| 506 | "id": "f44082db-9187-43b8-b05e-3e93c0de4889", | 477 | "id": "f44082db-9187-43b8-b05e-3e93c0de4889", | ||
| 507 | "name": "habitat", | 478 | "name": "habitat", | ||
| 508 | "state": "active", | 479 | "state": "active", | ||
| 509 | "vocabulary_id": null | 480 | "vocabulary_id": null | ||
| 510 | }, | 481 | }, | ||
| 511 | { | 482 | { | ||
| 512 | "display_name": "mamifero", | 483 | "display_name": "mamifero", | ||
| 513 | "id": "769483c9-c977-46f4-8225-1792c4af8a97", | 484 | "id": "769483c9-c977-46f4-8225-1792c4af8a97", | ||
| 514 | "name": "mamifero", | 485 | "name": "mamifero", | ||
| 515 | "state": "active", | 486 | "state": "active", | ||
| 516 | "vocabulary_id": null | 487 | "vocabulary_id": null | ||
| 517 | }, | 488 | }, | ||
| 518 | { | 489 | { | ||
| 519 | "display_name": "otros-recursos-que-incluyen-informacion-", | 490 | "display_name": "otros-recursos-que-incluyen-informacion-", | ||
| 520 | "id": "2b3610b7-85fe-495c-990a-40e99a432df1", | 491 | "id": "2b3610b7-85fe-495c-990a-40e99a432df1", | ||
| 521 | "name": "otros-recursos-que-incluyen-informacion-", | 492 | "name": "otros-recursos-que-incluyen-informacion-", | ||
| 522 | "state": "active", | 493 | "state": "active", | ||
| 523 | "vocabulary_id": null | 494 | "vocabulary_id": null | ||
| 524 | }, | 495 | }, | ||
| 525 | { | 496 | { | ||
| 526 | "display_name": "paisaje", | 497 | "display_name": "paisaje", | ||
| 527 | "id": "10f8d187-18cc-41ca-92cc-df2ec4de80a7", | 498 | "id": "10f8d187-18cc-41ca-92cc-df2ec4de80a7", | ||
| 528 | "name": "paisaje", | 499 | "name": "paisaje", | ||
| 529 | "state": "active", | 500 | "state": "active", | ||
| 530 | "vocabulary_id": null | 501 | "vocabulary_id": null | ||
| 531 | }, | 502 | }, | ||
| 532 | { | 503 | { | ||
| 533 | "display_name": "raton", | 504 | "display_name": "raton", | ||
| 534 | "id": "1d2b4978-da47-4913-917b-34b6e9d10c65", | 505 | "id": "1d2b4978-da47-4913-917b-34b6e9d10c65", | ||
| 535 | "name": "raton", | 506 | "name": "raton", | ||
| 536 | "state": "active", | 507 | "state": "active", | ||
| 537 | "vocabulary_id": null | 508 | "vocabulary_id": null | ||
| 538 | }, | 509 | }, | ||
| 539 | { | 510 | { | ||
| 540 | "display_name": "tierras-agricolas", | 511 | "display_name": "tierras-agricolas", | ||
| 541 | "id": "943469b4-e460-48a2-9737-50dff14c46a3", | 512 | "id": "943469b4-e460-48a2-9737-50dff14c46a3", | ||
| 542 | "name": "tierras-agricolas", | 513 | "name": "tierras-agricolas", | ||
| 543 | "state": "active", | 514 | "state": "active", | ||
| 544 | "vocabulary_id": null | 515 | "vocabulary_id": null | ||
| 545 | }, | 516 | }, | ||
| 546 | { | 517 | { | ||
| 547 | "display_name": "vegetacion", | 518 | "display_name": "vegetacion", | ||
| 548 | "id": "50a6603a-765e-4272-b5e7-889d7b2c0b23", | 519 | "id": "50a6603a-765e-4272-b5e7-889d7b2c0b23", | ||
| 549 | "name": "vegetacion", | 520 | "name": "vegetacion", | ||
| 550 | "state": "active", | 521 | "state": "active", | ||
| 551 | "vocabulary_id": null | 522 | "vocabulary_id": null | ||
| 552 | }, | 523 | }, | ||
| 553 | { | 524 | { | ||
| 554 | "display_name": "vertebrados", | 525 | "display_name": "vertebrados", | ||
| 555 | "id": "a0c85d4d-944d-4f1a-ae04-3937c823b73c", | 526 | "id": "a0c85d4d-944d-4f1a-ae04-3937c823b73c", | ||
| 556 | "name": "vertebrados", | 527 | "name": "vertebrados", | ||
| 557 | "state": "active", | 528 | "state": "active", | ||
| 558 | "vocabulary_id": null | 529 | "vocabulary_id": null | ||
| 559 | } | 530 | } | ||
| 560 | ], | 531 | ], | ||
| 561 | "thematic_area": [ | 532 | "thematic_area": [ | ||
| 562 | "especies_silvestres" | 533 | "especies_silvestres" | ||
| 563 | ], | 534 | ], | ||
| 564 | "theme_es": [ | 535 | "theme_es": [ | ||
| 565 | "http://datos.gob.es/kos/sector-publico/sector/medio-ambiente" | 536 | "http://datos.gob.es/kos/sector-publico/sector/medio-ambiente" | ||
| 566 | ], | 537 | ], | ||
| 567 | "title": "Efectos de la fragmentaci\u00f3n de los bosques sobre los | 538 | "title": "Efectos de la fragmentaci\u00f3n de los bosques sobre los | ||
| 568 | vertebrados en las mesetas Ib\u00e9ricas.", | 539 | vertebrados en las mesetas Ib\u00e9ricas.", | ||
| 569 | "title_translated": { | 540 | "title_translated": { | ||
| 570 | "en": "", | 541 | "en": "", | ||
| 571 | "es": "Efectos de la fragmentaci\u00f3n de los bosques sobre los | 542 | "es": "Efectos de la fragmentaci\u00f3n de los bosques sobre los | ||
| 572 | vertebrados en las mesetas Ib\u00e9ricas." | 543 | vertebrados en las mesetas Ib\u00e9ricas." | ||
| 573 | }, | 544 | }, | ||
| 574 | "topic": | 545 | "topic": | ||
| 575 | "http://inspire.ec.europa.eu/metadata-codelist/TopicCategory/biota", | 546 | "http://inspire.ec.europa.eu/metadata-codelist/TopicCategory/biota", | ||
| 576 | "type": "dataset", | 547 | "type": "dataset", | ||
| 577 | "url": | 548 | "url": | ||
| 578 | //iepnb.es:443/catalogo/dataset/7f5968c8-4415-54f1-b8d0-5e722a9c6e04", | 549 | //iepnb.es:443/catalogo/dataset/7f5968c8-4415-54f1-b8d0-5e722a9c6e04", | ||
| 579 | "version": "", | 550 | "version": "", | ||
| 580 | "version_notes": { | 551 | "version_notes": { | ||
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| 583 | } | 554 | } | ||
| 584 | } | 555 | } |