National Institute of Science and Mathematics Technology

Abstract Mud diapirs are present in different tectonic environments around the globe and are particularly prevalent in large deltas. The onshore Jurassic-Cretaceous Recôncavo Basin in northeast Brazil represents an atypical example of mud diapir occurrence in a rift basin. The intensity of mud diapirism is different in the three sectors of the basin, with the central sector exhibiting the best development. In the southern sector, diapirism is less significant, and it is practically nonexistent in the northeast sector. The 3D seismic, outcrop, and well data are used to geomorphologically characterize the onshore mud diapirs in the central sector of the Recôncavo Basin and correlate them with the structural and morphological aspects of the basin, in addition to elucidating the possible origins of their movement. After seismic interpretation, four mud diapirs are identified in the study area: Apraius-Miranga Norte, Pedra do Salgado, Biriba, and Carijó. Two internal seismic facies are identified as F1 and F2, with F1 having more disruptive features and F2 being more reflection-free. The eastern diapirs, close to the border fault conglomerates, are dominated by disrupted seismic facies (F1). The diapiric movement is associated with paleoseismicity and the rupture of an ancient delta front, together with the rapid basinward advancement of conglomerates during an active rifting phase. The Biriba diapir is possibly the first to arise, followed by Carijó and Apraius-Miranga Norte, and finally, Pedra do Salgado; this variable timing influences the location and migration of the depocenters in the area.

Bioceramic material; ciprofloxacin; metronidazole; persistent apical periodontitis; regenerative endodontic treatment.

ABSTRACT Roads significantly impact wildlife through collisions and habitat fragmentation. Wildlife crossing structures aim to mitigate these impacts, but their effectiveness for Neotropical small mammals is largely unknown. During 12 months, we monitored small mammal movements near overpasses, underpasses, and areas without structures (controls) in Rio de Janeiro, Brazil, using capture‐mark‐recapture. We quantified highway crossings, structure use without crossing, and structure avoidance. Eight small mammal species were recorded, among which were four forest specialists. The marsupials Didelphis aurita and Marmosa paraguayana used overpasses, while the water rat Nectomys squamipes and the four‐eyed opossum Philander quica used underpasses. However, only 5%–7% of marked individuals of the latter two species crossed the highway. The remaining four species ( Akodon cursor , Metachirus myosurus , Monodelphis cf. iheringi , and Mus musculus ) did not use the structures and were uncommon in roadside habitats. The results suggest that locally abundant forest small mammals avoiding roads can use crossing structures, potentially improving population connectivity compared to areas without them. However, rare forest specialists that did not use the passages may require more substantial interventions to enhance their connectivity. This research provides evidence for potential benefits of crossing structures for Neotropical small mammals while highlighting the need for tailored solutions for different species.