Miniatura

Fitxers

691885.pdf (965.55 KB)

Tipus de document

Article

Versió

Versió acceptada

Data de publicació

2019-09-28

Tots els drets reservats

Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/148364

Uptake and trophic transfer of nitrogen and carbon in a temperate forested headwater stream

Títol de la revista

Autors

Director/Tutor

ISSN de la revista

Títol del volum

Recurs relacionat

https://doi.org/10.1007/s00027-019-0672-x

Resum

In temperate headwater streams, riparian forests hinder the development of algae by reducing light availability and generate large inputs of detritus. Microbial assemblages associated with this detritus are expected to strongly influence in-stream elemental cycling. However, most research has focused on quantifying nitrogen (N) cycling while we know little about the coupling of N and carbon (C) cycling. We conducted a simultaneous whole-reach tracer addition of 15N-ammonium and 13C-acetate in a forested headwater stream to examine the importance of different primary uptake compartments (e.g. epilithic biofilm, leaves, small wood) on N and C uptake, storage, and transfer to consumers. We predicted high whole-reach uptake of N and C from the water column to satisfy requirements of microbial decomposers. We also predicted a dominant role of the abundant detrital compartments, especially leaf litter, in the uptake, storage and trophic transfer of these labile forms of N and C. Our results show efficient immobilization of both ammonium and acetate along the study reach. Leaf litter showed the highest percentage of contribution among all compartments to whole-reach ammonium and acetate uptake. We also found evidence of rapid transfer of N and C to higher trophic levels, thereby extending the retention time of these elements within the ecosystem. Overall, our study provides relevant insights into the influence of detritus on N and C cycling in headwater streams.

Matèries

Cursos d'aigua, Carboni, Nitrats

Matèries (anglès)

Rivers, Carbon, Nitrates

Citació

Col·leccions

Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)

Citació

ABRIL CUEVAS, Meritxell, BASTIAS ÁLAMO, Elliot, SCHILLER CALLE, Daniel von, MARTÍ ROCA, Eugènia, MENÉNDEZ LÓPEZ, Margarita, MUÑOZ GRÀCIA, Isabel. Uptake and trophic transfer of nitrogen and carbon in a temperate forested headwater stream. _Aquatic Sciences - Research Across Boundaries_. 2019. Vol. 81, núm. 75. [consulta: 25 de febrer de 2026]. ISSN: 1015-1621. [Disponible a: https://hdl.handle.net/2445/148364]

Exportar metadades

JSON - METS

Compartir registre