10.15470/juv2ew 6abff166-426c-468c-bd00-e359cbbe1321 https://ipt.gbif.es/resource?r=owl_pellets_mammal_survey Owl_pellets_mammal_survey Eduardo José Rodríguez-Rodríguez Sociedad Ibérica para la Conservación y Estudio de los Mamíferos

Sevilla Sevilla 41015 ES

momat@secem.es 0000-0002-1170-0788 Juan Matutano Sociedad Ibérica para la Conservación y Estudio de los Mamíferos

Sevilla Sevilla 41010 ES

matu@secem.es 0009-0005-3514-9694 Javier Calzada Dept. de Ciencias Integradas y Centro de Estudios Avanzados en Física, Matemáticas y Computación, Facultad de Ciencias Experimentales, Universidad de Huelva

Huelva Huelva 21071 ES

0000-0001-5701-2238 Lidia Freixas BiBio Research Group, Natural Sciences Museum of Granollers

Granollers Barcelona ES

Javier Fernández-López 0000-0003-4352-0252 Javier Palomo Depto. de Biología Animal, Fac. de Ciencias, Universidad de Málaga

Málaga Málaga 29071 ES

0000-0002-0396-1208 Carlos Rouco Depto. de Biología Vegetal y Ecología, Área de Ecología, Universidad de Sevilla

Sevilla Sevilla 41012 ES

00-0003-1026-3253 Simone Santoro Department of Natural Sciences and Environmental Health, University of South-Eastern Norway

Bø NO

0000-0003-0986-3278 Jacinto Román Dept. of Conservation Biology and Global Change, Estación Biológica de Doñana-CSIC

Sevilla Sevilla 41092 ES

0000-0003-0675-9432 Eduardo José Rodríguez-Rodríguez momat@secem.es 0000-0002-1170-0788 2026-04-01 eng Micromammal data obtained from the analysis of owl pellets in the national territory of Spain. The dataset includes 3,491 occurrences from 656 sampling events, covering 465 LAEA 10 × 10 km grid cells. Each record corresponds to the individuals of a species detected in a batch. 338 records have been provided by the platform for the collection of dietary data (pellets and latrines) within the Common Small Mammal Monitoring program SEMICE (www.semice.org) and 3153 by the MOMAT program Occurrence GBIF Dataset Type Vocabulary: http://rs.gbif.org/vocabulary/gbif/dataset_type_2015-07-10.xml Observation GBIF Dataset Subtype Vocabulary: http://rs.gbif.org/vocabulary/gbif/dataset_subtype.xml This work is licensed under a Creative Commons Attribution (CC-BY) 4.0 License. https://secem.es/estudios/programas/proyecto-momat The study area encompasses the entire Spanish territory, including the Iberian Peninsula, the Balearic Islands, the Canary Islands, Ceuta, and Melilla. -180 180 90 -90 2016-01-01 2025-01-01 Obtaining data on small mammals is time- and effort-intensive. To generate comparable data at the national level, a survey of owl pellets was conducted to infer species distributions. All data presented in this paper were generated through primary field surveys carried out within the project “Mejora del conocimiento del estado de conservación de la fauna terrestre continental de España (especies autóctonas y exóticas invasoras): Informes sexenales del artículo 17 (Directiva Hábitats) y del artículo 24 (Especies Invasoras), y actualización de atlas y libros rojos”, commissioned by the Spanish Ministry for the Ecological Transition and the Demographic Challenge (MITECO), implemented by TRAGSATEC, and funded by the European Union (NextGenerationEU). Additionally, the SEMICE Project contributed with pellet records from Catalonia. annually Eduardo José Rodríguez Rodríguez Sociedad Ibérica para la Conservación y estudio de los Mamíferos

Sevilla Sevilla 41010 ES

momat@secem.es 0000-0002-1170-0788 Micromammal presence data were obtained through the analysis of pellets produced primarily by barn owls (Tyto alba), as well as other nocturnal raptors including Strix aluco, Asio otus, Bubo bubo and Athene noctua. Pellets were collected at known or potential roosting and nesting sites. When available, at least 25 pellets per roost were analysed; if fewer were present, all available pellets were processed. Prey remains contained within the pellets, mainly skulls and mandibles, were identified to species level using established osteological criteria. Identification was supported by reference manuals and digital tools developed by SECEM, and data were centrally managed using the SEMICE platform. This non-invasive method allows detection of a broad range of micromammal species for which alternative census methods are limited or unavailable. The study area encompasses the entire Spanish territory, including the Iberian Peninsula, the Balearic Islands, the Canary Islands, Ceuta, and Melilla. This region spans a wide range of bioclimatic zones, from Atlantic and Alpine in the north, to Mediterranean and semi-arid regions in the south and southeast, as well as Macaronesian climates in the Canary Islands. Elevation ranges from sea level to over 3,400 m in the Pyrenees and Sierra Nevada, resulting in steep climatic and habitat gradients. The landscape is highly heterogeneous, comprising forests (deciduous, coniferous, and mixed), shrublands, grasslands, wetlands, rivers and streams, coastal areas, agricultural lands, and urbanized zones. Such environmental diversity supports a broad spectrum of terrestrial and semi-aquatic mammal species with varying ecological requirements and detectability, making standardized and complementary survey methods essential for comprehensive monitoring. Micromammal presence was assessed through the analysis of owl pellets, mainly from barn owls and other nocturnal raptors. Pellets were collected at roosting and nesting sites, with up to 25 pellets analysed per site when available. Prey remains, primarily skulls and mandibles, were identified to species using osteological criteria and SECEM reference materials, and data were managed via the SEMICE platform. This non-invasive approach enables detection of many micromammal species for which other survey methods are limited. All data were reviewed and validated by a SECEM specialist, and supporting images were requested for records involving uncertain species identification Contacto SECEM metadataProvider Eduardo José Rodríguez-Rodríguez 0000-0002-1170-0788 author Jacinto Román author Javier Palomo author Carlos Rouco author Simone Santoro author Javier Fernández author Juan Matutano author María Mas author Javier Calzada author State and EU regulations require Member States to monitor, track, and assess various species of terrestrial mammals. Periodically, it is necessary to update reports and Red Lists, which are essential for defining appropriate management measures to protect and promote biodiversity in our country. In this context, the project developed by SECEM together with TRAGSATEC (2024–2025) was launched, in which a Terrestrial Mammal Monitoring plan (MOMAT) was designed. Its objective is to gather information on most mammal species that currently lack specific monitoring programs. At present, the MOMAT project operates thanks to volunteer participation. The data collected help improve knowledge about the species included both in the annexes of the Habitats Directive and in the EU Regulation on invasive alien species. Aditonally, 338 records have been provided by the platform for the collection of dietary data (pellets and latrines) within the Common Small Mammal Monitoring program SEMICE (www.semice.org). All the information generated will contribute to future updates of the Atlas and Red Book of Terrestrial Mammals of Spain, facilitating a better understanding of our fauna and supporting more effective decision-making in conservation. Mejora del conocimiento del estado de conservación de la fauna terrestre continental de España (especies autóctonas y exóticas invasoras): Informes sexenales del artículo 17 (Directiva Hábitats) y del artículo 24 (Especies Invasoras), y actualización de atlas y libros rojos”, commissioned by the Spanish Ministry for the Ecological Transition and the Demographic Challenge (MITECO), implemented by TRAGSATEC, and funded by the European Union (NextGenerationEU) The study area encompasses the entire Spanish territory, including the Iberian Peninsula, the Balearic Islands, the Canary Islands, Ceuta, and Melilla. This region spans a wide range of bioclimatic zones, from Atlantic and Alpine in the north, to Mediterranean and semi-arid regions in the south and southeast, as well as Macaronesian climates in the Canary Islands. Elevation ranges from sea level to over 3,400 m in the Pyrenees and Sierra Nevada, resulting in steep climatic and habitat gradients. The landscape is highly heterogeneous, comprising forests (deciduous, coniferous, and mixed), shrublands, grasslands, wetlands, rivers and streams, coastal areas, agricultural lands, and urbanized zones. Such environmental diversity supports a broad spectrum of terrestrial and semi-aquatic mammal species with varying ecological requirements and detectability, making standardized and complementary survey methods essential for comprehensive monitoring. 2026-02-12T07:29:16.888+01:00 dataset Rodríguez-Rodríguez E J, Matutano J, Calzada J, Freixas L, Fernández-López J, Palomo J, Rouco C, Santoro S, Román J (2026). Small Mammals – Owl Pellet Analysis – Spain – 2016–2025 – MOMAT Project. Version 2.1. Sociedad Ibérica para la Conservación y Estudio de los Mamíferos (SECEM). Occurrence dataset. https://doi.org/10.15470/juv2ew https://ipt.gbif.es/logo.do?r=owl_pellets_mammal_survey 6abff166-426c-468c-bd00-e359cbbe1321/v2.1.xml