Pacific Science, published since 1947, includes multidisciplinary research on the biological and physical sciences of the Pacific basin, such as biogeography, ecology, evolution, geology, and volcanology.
Palaeodiversity, published by the Stuttgart State Museum of Natural History, contains research in palaeontology and its related fields. It is particularly interested in specimen-based studies which address problems on a larger scale.
PALAIOS is dedicated to emphasizing the impact of life on Earth's history as recorded in the paleontological and sedimentological records, and covers topics including biogeochemistry, ichnology, and paleoclimatology.
Paleobiology publishes work on any aspect of biological paleontology. Emphasis is placed on biological or paleobiological processes and patterns, including macroevolution, extinction, and diversification.
Paleontological Contributions is a rapid publication journal containing original research in all areas of paleontology and related biological disciplines, particularly the naming and description of new taxa.
Paleonotological Research focuses on work dealing with paleontology and related sciences. Contributions cover a global geographic scope, and address all ages (Precambrian to the Quaternary, including modern analogs).
Palynology, published by The Palynological Society, contains both novel and traditional work on the science of organic microfossils and their modern counterparts, and includes research on all palynomorph groups and geological ages.
The Pan-Pacific Entomologist publishes work on the biosystematics of insects and related arthropods, especially articles dealing with their taxonomy, biology, behavior, ecology, life history, biogeography and distribution.
Photochemistry and Photobiology publishes original research articles and reviews on current topics in photoscience, from the primary interaction of light with molecules, cells, and tissue to the subsequent biological responses.
Polish Journal of Ecology publishes work on all aspects of ecology: both fundamental and applied, physiological ecology, ecology of population, community, ecosystem, landscape, and global ecology.
Politics and the Life Sciences publishes work on the intersection of political science and the life sciences, and embraces interdisciplinary approaches to address this intersection in innovative ways.
Primate Conservation publishes conservation research on primate species, including status surveys and studies on distribution, which are a fundamental component of conservation endeavor.
Proceedings of the Academy of Natural Sciences, published since 1841, contains papers in the areas of systematics, taxonomy, evolution, biogeography, and ecology, as well as occasional historical reviews.
Proceedings of the Biological Society of Washington contains papers that broadly bear on systematics in the biological sciences (botany, zoology, and paleontology) and notices of Society business.
Proceedings of the Entomological Society of Washington publishes original research in entomology. Subject matter includes systematics, taxonomy, biology, behavior, ecology, morphology, and genetics.