author = "Larrinaga, Asier R."

Encontrado 26 documentos, página mostrada 1 de 3

Intraspecific variation in fruit size and shape in Corema album (Ericaceae) along a latitudinal gradient: from fruits to populations

Description: Plant trait variation can be the result of environmental variability, developmental instability, and plasticity, although it can also arise from previous selective pressures on fruit traits themselves or directly on their variation. We aimed to quantify fruit size and shape variability at within-pla...
Language(s): Inglés

A multi-level test of the seed number/size trade-off in two Scandinavian communities

Description: 20 páginas, 5 tabals y 2 figuras. , Seed size is a fundamental life-history trait for plants. A seed number/size trade-off is assumed because the resources invested in reproduction are limited; however, such a trade-off is not always observed. This could be a consequence of the method used for testing ...
Language(s): Inglés

The role of post-floral persistent perianth in Helleborus viridis subsp. occidentalis (Ranunculaceae)

Description: © 2014 The Authors. Species within the genus Helleborus differ in the relative location of their sepals. Previous studies have proved the existence of post-floral functionality of sepals in H. foetidus, which leads us to consider the possibility of differences in the functionality of the sepals in H...
Language(s): Inglés

Intra-specific variation of fruit size and shape in Corema album (Ericaceae) along a latitudinal gradient: from fruits to populations

Description: Sampling procedures: In September 1997, we haphazardly selected 15 fruit-bearing Corema females in each population. Minimum distance among selected plants was 5 m, covering an approximately along-seaside transect of more than 200 m. We collected 30 ripe fruits from each of the plants, one by one and...
Language(s): Inglés

Do seed-dispersing birds exert selection on optimal plant trait combinations? Correlated phenotypic selection on the fruit and seed size of hawthorn (Crataegus monogyna)

Description: Seed-dispersing birds can be expected to optimize their energy intake through fruit selection and hence exert a positive selection on fruit pulp content, that is to say, favoring big fruits with small seeds. On the other hand they may select both, average fruit size and its variation. We addressed t...
Language(s): Inglés

Effects of frugivore preferences and habitat heterogeneity on seed rain: A multi-scale analysis

Description: Seed rain mediated by frugivores is influenced by (1) the seed-deposition distances following fruit ingestion, (2) the disperser activity, as determined by its behaviour and habitat preferences, and (3) the structure of the habitat within the landscape. Here, we evaluated such components using the f...
Language(s): Inglés

Effects of Matrix Characteristics and Interpatch Distance on Functional Connectivity in Fragmented Temperate Rainforests

Description: The connectivity of remnant patches of habitat may affect the persistence of species in fragmented landscapes. We evaluated the effects of the structural connectivity of forest patches (i.e., distance between patches) and matrix class (land-cover type) on the functional connectivity of 3 bird specie...
Language(s): Inglés

Land-use and edge effects unbalance seed dispersal and predation interactions under habitat fragmentation

Description: The process of fragmentation can greatly influence plant-animal interactions. To assess the degree to which it affects the balance between two interactions of opposite sign, namely seed dispersal and post-dispersal seed predation, we selected 16 patches of chestnut forest in O Courel and El Bierzo, ...
Language(s): Inglés

Are nested networks more robust to disturbance? A test using epiphyte-tree, comensalistic networks

Description: 10 páginas, 3 figuras y 2 tablas. , Recent research on ecological networks suggests that mutualistic networks are more nested than antagonistic ones and, as a result, they are more robust against chains of extinctions caused by disturbances. We evaluate whether mutualistic networks are more nested than...
Language(s): Inglés

Changes in Patch Features May Exacerbate or Compensate for the Effect of Habitat Loss on Forest Bird Populations

Description: One and a half centuries after Darwin visited Chiloe Island, what he described as “…an island covered by one great forest…” has lost two-thirds of its forested areas. At this biodiversity hotspot, forest surface is becoming increasingly fragmented due to unregulated logging, clearing for pastures an...
Language(s): Inglés

Encontrado 26 documentos, página mostrada 1 de 3

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