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Auteur Pedro J. Rey |
Documents disponibles écrits par cet auteur (3)
Affiner la rechercheAgricultural intensification erodes taxonomic and functional diversity in Mediterranean olive groves by filtering out rare species / Rubén Tarifa in Journal of applied ecology, 58 (10) (2021)
Titre : Agricultural intensification erodes taxonomic and functional diversity in Mediterranean olive groves by filtering out rare species Type de document : Imprimé Auteurs : Rubén Tarifa ; Carlos Martínez-Núñez ; Francisco Valera ; Juan P. González-Varo ; Teresa Salido ; Pedro J. Rey Année de publication : 2021 Article en page(s) : 2266-2276 Langues : Anglais (eng) Catégories : [LOTERRE-Biodiversité] Diversité botanique
[CBNPMP-Thématique] Agriculture et environnement
[CBNPMP-Géographique] MéditerranéeRésumé : 1 Agri-Environmental Schemes (AES) have been proposed to mitigate the impact of agriculture on both taxonomic and functional biodiversity. However, a better knowledge of the mechanisms involved in the loss of agrobiodiversity is needed to implement efficient AES. An unbalanced effort on research towards arable lands compared to permanent crops, and on fauna relative to plants, is patent, which limits the generalization of AES effectiveness.
2 We evaluated the effects of agricultural management and landscape simplification on taxonomic and functional diversity of the ground herb cover of 40 olive groves. We use a recently developed approach based on Hill numbers (rare, common and dominant species based) to analyse taxonomic and functional dissimilarity between farms with contrasting agricultural practices, and its potential attenuation by landscape complexity. We further explore the filtering effect of agricultural intensification on functional traits, and the relationship between functional and species richness across landscapes.
3 We found that taxonomic and functional dissimilarity of herb assemblages between intensively and low-intensively managed fields was mainly due to rare species. Dissimilarity decreased as landscape complexity increased, evidencing that complex landscapes attenuate the impact of agriculture intensification on herb assemblage composition. Agricultural intensification favoured more functionally homogeneous assemblages and disfavoured the herbs pollinated by insects, while it did not seem to affect wind-pollinated species.
4 Overall, functional richness increased exponentially with species richness across landscapes, but the latter was insufficient to drive any clear enhancement in functional richness in simple landscapes. In contrast, high species richness accelerated the enhancement in functional richness in intermediate and complex landscapes. These results highlight the functional filtering that intensive agriculture has generated for decades in homogeneous olive-dominated landscapes.
5 Synthesis and applications. Herb cover is essential to support the fauna of permanent croplands and their sustainable production. Hence, Agri-Environmental Schemes (AES) in these croplands should promote management practices favouring the diversity and functionality of herb assemblages. Such AES should be particularly prioritized in homogeneous landscapes, where ground herb cover composition and function has long been homogenized to a great extent.
Lien pérenne : DOI : 10.1111/1365-2664.13970 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=153936
in Journal of applied ecology > 58 (10) (2021) . - 2266-2276Tarifa, Rubén, Martínez-Núñez, Carlos, Valera, Francisco, González-Varo, Juan P., Salido, Teresa, Rey, Pedro J. 2021 Agricultural intensification erodes taxonomic and functional diversity in Mediterranean olive groves by filtering out rare species. Journal of applied ecology, 58(10): 2266-2276.Documents numériques
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Titre : Fuentes de variación en el tamaño de la semilla de la herbácea perenne Helleborus foetidus L. (Ranunculaceae) Type de document : Imprimé Auteurs : J.L. Garrido ; Pedro J. Rey ; C.M. Herrera Année de publication : 2005 Article en page(s) : 115-126 Langues : Espagnol (spa) Catégories : [CBNPMP-Thématique] Régime et stratégie de reproduction (allogamie, autogamie, apomixie, reproduction asexué) Mots-clés : Helleborus foetidus L. Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=139226
in Anales del Jardín Botánico de Madrid (1979) > 62 (2) (12/2005) . - 115-126Garrido, J.L., Rey, Pedro J., Herrera, C.M. 2005 Fuentes de variación en el tamaño de la semilla de la herbácea perenne Helleborus foetidus L. (Ranunculaceae). Anales del Jardín Botánico de Madrid (1979), 62(2): 115-126.Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité R3636 P-122 Revue Centre de documentation Revues Consultable Geographical variation in autonomous self-pollination levels unrelated to pollinator service in Helleborus foetidus (Ranunculaceae) / Carlos M. Herrera (2001)
Titre : Geographical variation in autonomous self-pollination levels unrelated to pollinator service in Helleborus foetidus (Ranunculaceae) Type de document : Tiré à part de revue Auteurs : Carlos M. Herrera ; A.M. Sanchez-Lafuente ; M. Medrano ; J. Guitian ; X. Cerda ; Pedro J. Rey Année de publication : 2001 Importance : 1025-1032 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Régime et stratégie de reproduction (allogamie, autogamie, apomixie, reproduction asexué) Mots-clés : Helleborus foetidus L. Résumé : Autonomous self-pollination may be considered as a mechanism enhancing plant reproductive success when plant access to pollen sources may limit seed production. We have studied the relationship between geographical patterns of variation in pollinator service to Helleborus foetidus and self-pollination ability in three widely spaced regions in the Iberian Peninsula. As could be expected from its early flowering period, pollinator visitation rates to both plants and flowers of H. foetidus were very low at all sites. Pollinator composition remained consistent among regions, but there was significant variation among regions in pollinator service. Despite the low visitation rates, fruit set did not appear to be pollen limited in any of the study areas, which may be explained by the long duration of flowers (up to 20 d). When pollinators were excluded experimentally, fruit set decreased significantly, but substantial levels of self-pollination occurred at all regions. Autonomous self-pollination levels were lowest in the two regions with lowest pollinator service and highest in the region with highest pollinator service. This disagreement between our results and the expectations derived from the reproductive assurance hypothesis may reflect a nonequilibrium situation of the northern H. foetidus populations in relation to their current pollinating environment. Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=130765 Herrera, Carlos M., Sanchez-Lafuente, A.M., Medrano, M., Guitian, J., Cerda, X., Rey, Pedro J. 2001 Geographical variation in autonomous self-pollination levels unrelated to pollinator service in Helleborus foetidus (Ranunculaceae). American Journal of Botany, 88(6) : 1025-1032.Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 11188 Herrera C.M. Tiré à part Centre de documentation Tirés à part Consultable
