Publications by authors named "Bernat Bramon Mora"

AbstractSpecies' distributions can take many different forms. For example, fat-tailed or skewed distributions are very common in nature, as these can naturally emerge as a result of individual variability and asymmetric environmental tolerances, respectively. Studying the basic shape of distributions can teach us a lot about the ways climatic processes and historical contingencies shape ecological communities.

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Article Synopsis
  • Ecological communities experience shifts in populations and interactions over time, making it difficult to identify the underlying mechanisms.
  • A new approach treats the structure of plant-pollinator networks as time series, revealing high variability in species interactions throughout different seasons.
  • The study highlights coherent dynamics across years, uncovering patterns of species entry, role changes, and exits from these networks, thus clarifying key processes in plant-pollinator community interactions.
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Null models have become a crucial tool for understanding structure within incidence matrices across multiple biological contexts. For example, they have been widely used for the study of ecological and biogeographic questions, testing hypotheses regarding patterns of community assembly, species co-occurrence and biodiversity. However, to our knowledge we remain without a general and flexible approach to study the mechanisms explaining such structures.

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Although the structure of empirical food webs can differ between ecosystems, there is growing evidence of multiple ways in which they also exhibit common topological properties. To reconcile these contrasting observations, we postulate the existence of a backbone of interactions underlying all ecological networks-a common substructure within every network comprised of species playing similar ecological roles-and a periphery of species whose idiosyncrasies help explain the differences between networks. To test this conjecture, we introduce a new approach to investigate the structural similarity of 411 food webs from multiple environments and biomes.

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