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Title: Heterogeneity of soil surface ammonium concentration and other characteristics, related to plant specific variability in a Mediterranean-type ecosystem
Author: Cruz, Cristina
Bio, Ana M.F.
Jullioti, Aldo
Tavares, Alice
Dias, Teresa
Martins-Loução, Maria Amélia
Keywords: Soil nitrogen availability
Plant functional types
Issue Date: 2008
Publisher: Elsevier
Citation: Environmental Pollution 154 (2008) 414-423
Abstract: Heterogeneity and dynamics of eight soil surface characteristics essential for plantsdammonium and nitrate concentrations, water content, temperature, pH, organic matter, nitrification and ammonification ratesdwere studied in a Mediterranean-type ecosystem on four occasions over a year. Soil properties varied seasonally and were influenced by plant species. Nitrate and ammonium were present in the soil at similar concentrations throughout the year. The positive correlation between them at the time of greatest plant development indicates that ammonium is a readily available nitrogen source in Mediterranean-type ecosystems. The results presented here suggest that plant cover significantly affects soil surface characteristics.
Description: ACESSO via B-on:
Peer review: yes
ISSN: 0269-7491
Appears in Collections:FC - Artigos em Revistas Internacionais

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