naa a22 4500 510751393 CHVBK 20180411083106.0 cr unu---uuuuu 180411e20130401xx s 000 0 eng 10.1007/s11270-013-1492-6 doi (NATIONALLICENCE)springer-10.1007/s11270-013-1492-6 Effects of Nitrogen Deposition on Growth and Physiology of Pleurochaete squarrosa (Brid.) Lindb., a Terricolous Moss from Mediterranean Ecosystems [Elektronische Daten] [Raúl Ochoa-Hueso, Esteban Manrique] We studied the effects of N deposition (0, 10, 20 and 50kg N ha−1 year−1) on cover and physiology of Pleurochaete squarrosa, a terricolous moss from semiarid Mediterranean ecosystems. We also investigated the effects of N fertilization under competition with vascular plants or under water stress. Under greenhouse conditions, vascular plant competition reduced moss cover, and there was a significant interaction between N and competition. Water stress reduced moss cover under high and low competition conditions. Nitrogen fertilization increased moss cover irrespectively of the N dose supplied at low competition conditions. Under field conditions, N deposition affected moss physiology but not cover. Most of the physiological variables analyzed responded to N deposition, although the response of some of them was saturated with only 10kg N ha−1 year−1 over the background (nitrate reductase; phosphomonoesterase; tissue N and K+). The response of indicators such as chlorophyll a and lutein contents did not show any evidence of saturation, which probably makes them the best candidates in monitoring programs. Based on the data provided, the applicability of the phosphomonoesterase can also be considered. In addition, the importance of taking into account the existence of superimposed environmental gradients (such as those in soil mineral N content) interacting with the response of P. squarrosa to predict impacts of N deposition has been demonstrated. Therefore, detailed soil surveys and integrative physiological evaluations will be required to produce a significantly better picture of the effects of N deposition on Mediterranean ecosystems along extant N deposition gradients. Springer Science+Business Media Dordrecht, 2013 Moss cover nationallicence Moss physiology nationallicence Phosphomonoesterase nationallicence Chlorophyll a nationallicence Nitrogen deposition nationallicence Biomonitoring nationallicence Ochoa-Hueso Raúl Museo Nacional de Ciencias Naturales, Consejo Superior de Investigaciones Científicas, C/Serrano 115 dpdo, 8006, Madrid, Spain aut Manrique Esteban Museo Nacional de Ciencias Naturales, Consejo Superior de Investigaciones Científicas, C/Serrano 115 dpdo, 8006, Madrid, Spain aut Water, Air, & Soil Pollution Springer Netherlands 224/4(2013-04-01), 1-14 0049-6979 224:4<1 2013 224 11270 https://doi.org/10.1007/s11270-013-1492-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11270-013-1492-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ochoa-Hueso Raúl Museo Nacional de Ciencias Naturales, Consejo Superior de Investigaciones Científicas, C/Serrano 115 dpdo, 8006, Madrid, Spain aut NATIONALLICENCE 700 1- Manrique Esteban Museo Nacional de Ciencias Naturales, Consejo Superior de Investigaciones Científicas, C/Serrano 115 dpdo, 8006, Madrid, Spain aut NATIONALLICENCE 773 0- Water, Air, & Soil Pollution Springer Netherlands 224/4(2013-04-01), 1-14 0049-6979 224:4<1 2013 224 11270 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer