N Deposition Affects N Availability in Interstitial Water, Growth of Sphagnum and Invasion of Vascular Plants in Bog Vegetation. Limpens, J., Berendse, F., & Klees, H. New Phytologist, 157(2):339–347, January, 2003. doi abstract bibtex \textbullet We studied the effects of N deposition on shrub-moss competition and the establishment and growth of invasive Betula pubescens and Molinia caerulea in intact bog vegetation removed from a site subject to 40 kg N ha-1 yr-1. \textbullet Mesocosms with and without introduced Betula seedlings and Molinia sprouts were kept under a roof and received an equivalent of 0, 40 and 80 kg N ha-1 yr-1 for two growing seasons. \textbullet N concentration in both interstitial water and Sphagnum decreased when N input ceased and increased when N input was doubled. Molinia biomass was positively related to the inorganic N concentration in the interstitial water. Adding N increased production of Molinia and prolonged survival of Betula seedlings in the first year. Sphagnum height increment showed a hump-shaped relationship with light interception by vascular plants. \textbullet N deposition encouraged vascular plants to grow by enhancing N availability in the rhizosphere. Water table level and the availability of P were found to be important in explaining species-specific responses to N deposition. The underlying mechanisms and the reversibility of N effects are discussed.
@article{limpensDepositionAffectsAvailability2003,
title = {N Deposition Affects {{N}} Availability in Interstitial Water, Growth of {{Sphagnum}} and Invasion of Vascular Plants in Bog Vegetation},
author = {Limpens, Juul and Berendse, Frank and Klees, Herman},
year = {2003},
month = jan,
volume = {157},
pages = {339--347},
issn = {0028-646X},
doi = {10.1046/j.1469-8137.2003.00667.x},
abstract = {\textbullet{} We studied the effects of N deposition on shrub-moss competition and the establishment and growth of invasive Betula pubescens and Molinia caerulea in intact bog vegetation removed from a site subject to 40 kg N ha-1 yr-1. \textbullet{} Mesocosms with and without introduced Betula seedlings and Molinia sprouts were kept under a roof and received an equivalent of 0, 40 and 80 kg N ha-1 yr-1 for two growing seasons. \textbullet{} N concentration in both interstitial water and Sphagnum decreased when N input ceased and increased when N input was doubled. Molinia biomass was positively related to the inorganic N concentration in the interstitial water. Adding N increased production of Molinia and prolonged survival of Betula seedlings in the first year. Sphagnum height increment showed a hump-shaped relationship with light interception by vascular plants. \textbullet{} N deposition encouraged vascular plants to grow by enhancing N availability in the rhizosphere. Water table level and the availability of P were found to be important in explaining species-specific responses to N deposition. The underlying mechanisms and the reversibility of N effects are discussed.},
journal = {New Phytologist},
keywords = {*imported-from-citeulike-INRMM,~INRMM-MiD:c-12643036,betula-pubescens,bogs,ecosystem-invasibility,forest-resources,invasive-species,molinia-caerulea,nitrogen,sphagnum-spp,wetlands},
lccn = {INRMM-MiD:c-12643036},
number = {2}
}
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