Nitrogen mineralization in epiphytic soils of an old-growth <i>Fitzroya cupressoides</i> forest, southern Chile

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dc.contributor.authorPérez, CA
dc.contributor.authorGuevara, R
dc.contributor.authorCarmona, MR
dc.contributor.authorArmesto, JJ
dc.date.accessioned2025-01-21T01:07:19Z
dc.date.available2025-01-21T01:07:19Z
dc.date.issued2005
dc.description.abstractEpiphytic soils derive from organic matter accumulation on trunks and canopy branches of large trees. We compared chemical and physical properties, rates of net N mineralization, and bacterial biomass carbon associated with epiphytic soils and the forest floor of an old-growth, temperate forest dominated by the long-lived Fitzroya capressoides (Cupressaceae) in Chiloe Island, southern Chile. Epiphytic soils had lower density, higher moisture content, higher total carbon and nitrogen contents, and lower pH than forest floor; however, these differences were only slight. Microbial biomass and soil C/N ratios did not differ between soil types. We estimated similar N mineralization rates in epiphytic soil and in the forest floor, but there was a significant interaction between time of the year and soil type, resulting from higher N production in epiphytic soils in some months. Microbial net N mineralization in the epiphytic layer contributed ca 6% of the internal N circulation. Fitzroya trees may access these nutrients via adventitious root uptake and leaching to the forest floor, thus exploiting an alternative path of nutrient circulation in old-growth forests.
dc.fuente.origenWOS
dc.identifier.eissn2376-7626
dc.identifier.issn1195-6860
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/96309
dc.identifier.wosidWOS:000230239500007
dc.issue.numero2
dc.language.isoen
dc.pagina.final215
dc.pagina.inicio210
dc.revistaEcoscience
dc.rightsacceso restringido
dc.subjectC/N ratio
dc.subjectepiphytic soil
dc.subjectFitzroya cupressoides
dc.subjectsouthern temperate forests
dc.subject.ods15 Life on Land
dc.subject.ods13 Climate Action
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.subject.odspa13 Acción por el clima
dc.titleNitrogen mineralization in epiphytic soils of an old-growth <i>Fitzroya cupressoides</i> forest, southern Chile
dc.typeartículo
dc.volumen12
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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