Publications by authors named "J Calleja"

Widely distributed plant genera offer insights into biogeographic processes and biodiversity. The Carduus-Cirsium group, with over 600 species in eight genera, is diverse across the Holarctic regions, especially in the Mediterranean Basin, Southwest Asia, Japan, and North America. Despite this diversity, evolutionary and biogeographic processes within the group, particularly for the genus Cirsium, remain underexplored.

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Colonization and diversification processes are responsible for the distinctiveness of island biotas, with Madagascar standing out as abiodiversity hotspot exceptionally rich in species and endemism. Regardless of its significance, the evolutionary history and diversification drivers of Madagascar's flora remain understudied. Here we focus on Helichrysum (Compositae, Gnaphalieae) to investigate the evolutionary and biogeographic origins of the Malagasy flora.

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Background And Aims: Data on the effectiveness of classical non-selective beta-blockers (cNSBB, i.e., propranolol and nadolol) versus carvedilol in patients with cirrhosis are scarce.

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Metabolic dysfunction-associated steatohepatitis(MASH) is commonly seen in biopsy proven steatotic liver disease(SLD). Life-style intervention reaching a weight loss higher than 10% promotes MASH resolution, but this goal is only achieved by a small number of patients. Endoscopic sleeve gastroplasty(ESG) has recently emerged as a safe and effective option to promote weight loss in obese population.

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Article Synopsis
  • Intercontinental disjunctions in biogeography are intriguing patterns often seen in bryophytes, which can disperse over long distances, creating unexpected species distributions.
  • This study focuses on a moss with a distribution between East Africa and southern India, examining whether it represents a single species or comprises closely-related but overlooked species.
  • Utilizing both morphological and molecular methods, the research identifies two distinct species, reveals their overlapping ranges in East Africa, and emphasizes the importance of recognizing overlooked species in understanding bryophyte biogeography.
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