Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/162139
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Alleviating nitrogen limitation in Mediterranean maquis vegetation leads to ecological degradation |
Autor: | Dias, Teresa; Crous, Casparus J.; Liberati, Dario; Munzi, Silvana; Gouveia, Catarina; Ulm, Florian; Afonso, Ana Catarina; Ochoa-Hueso, Raúl; Manrique, Esteban CSIC ORCID ; Sheppard, Lucy; Martins-Loução, Maria Amelia; Bernardes da Silva, Anabela; Cruz, Cristina CSIC | Palabras clave: | Ecosystem functioning Plant-soil ecological partnerships Mediterranean Ecosystem degradation Ammonium |
Fecha de publicación: | nov-2017 | Editor: | John Wiley & Sons | Citación: | Land Degradation and Development 28(8): 2482-2492 (2017) | Resumen: | Soils are being degraded at an alarming rate and thereby also crucial ecosystem goods and services. Nitrogen (N) enrichment is a major driver of this degradation. While the negative impacts of N enrichment on vegetation are well known globally, those on various ecological interactions, and on ecosystem functioning, remain largely unknown. Because Mediterranean ecosystems are N limited, they are good model systems for evaluating how N enrichment impacts not only vegetation but also ecological partnerships and ecosystem functioning. Using a 7-year N-manipulation (dose and form) field experiment running in a Mediterranean Basin maquis located in a region with naturally low ambient N deposition (<4 kg N ha y), we assessed the impacts of the N additions on (i) the dominant plant species (photosynthetic N-use efficiency); (ii) plant–soil ecological partnerships with ectomycorrhiza and N-fixing bacteria; and (iii) ecosystem degradation (plant–soil cover, biological mineral weathering and soil N fixation). N additions significantly disrupted plant–soil cover, plant–soil biotic interactions, and ecosystem functioning compared with ambient N deposition conditions. However, the higher the ammonium dose (alone or with nitrate), the more drastic these disruptions were. We report a critical threshold at 20–40 kg ammonium ha y whereby severe ecosystem degradation can be expected. These observations are critical to help explain the mechanisms behind ecosystem degradation, to describe the collective loss of organisms and multifunction in the landscape, and to predict potential fragmentation of Mediterranean maquis under conditions of unrelieved N enrichment. Copyright © 2017 John Wiley & Sons, Ltd. | URI: | http://hdl.handle.net/10261/162139 | DOI: | 10.1002/ldr.2784 | Identificadores: | doi: 10.1002/ldr.2784 issn: 1099-145X |
Aparece en las colecciones: | (MNCN) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
accesoRestringido.pdf | 15,38 kB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
8
checked on 18-abr-2024
WEB OF SCIENCETM
Citations
8
checked on 22-feb-2024
Page view(s)
320
checked on 22-abr-2024
Download(s)
91
checked on 22-abr-2024
Google ScholarTM
Check
Altmetric
Altmetric
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.