<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Uribe, C</style></author><author><style face="normal" font="default" size="100%">Inclán, R</style></author><author><style face="normal" font="default" size="100%">Sanchez, D M</style></author><author><style face="normal" font="default" size="100%">Clavero, M A</style></author><author><style face="normal" font="default" size="100%">Fernandez, A M</style></author><author><style face="normal" font="default" size="100%">Morante, R</style></author><author><style face="normal" font="default" size="100%">Cardena, A</style></author><author><style face="normal" font="default" size="100%">Blanco, A</style></author><author><style face="normal" font="default" size="100%">Van Miegroet, H</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Effect of wildfires on soil respiration in three typical Mediterranean forest ecosystems in Madrid, Spain</style></title><secondary-title><style face="normal" font="default" size="100%">PLANT AND SOIL</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">climate change</style></keyword><keyword><style  face="normal" font="default" size="100%">Pinus sylvestris</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus ilex</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus pyrenaica</style></keyword><keyword><style  face="normal" font="default" size="100%">soil parameters</style></keyword><keyword><style  face="normal" font="default" size="100%">Soil respiration</style></keyword><keyword><style  face="normal" font="default" size="100%">wildfires</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2013</style></year></dates><publisher><style face="normal" font="default" size="100%">SPRINGER</style></publisher><pub-location><style face="normal" font="default" size="100%">VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS</style></pub-location><volume><style face="normal" font="default" size="100%">369</style></volume><pages><style face="normal" font="default" size="100%">403-420</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Mediterranean forests are vulnerable to numerous threats including wildfires due to a combination of climatic factors and increased urbanization. In addition, increased temperatures and summer drought lead to increased risk of forest fires as a result of climate change. This may have important consequences for C dynamics and balance in these ecosystems. Soil respiration was measured over 2 successive years in Holm oak (Quercus ilex subsp. ballota; Qi); Pyrenean Oak (Quercus pyrenaica Willd; Qp); and Scots pine (Pinus sylvestris L.; Ps) forest stands located in the area surrounding Madrid (Spain), to assess the long term effects of wildfires on C efflux from the soil, soil properties, and the role of soil temperature and soil moisture in the variation of soil respiration. Soil respiration, soil temperature, soil moisture, fine root mass, microbial biomass, biological and chemical soil parameters were compared between non burned (NB) and burned sites (B). The annual C losses through soil respiration from NB sites in Qi, Qp and Ps were 790, 1010, 1380 gCm(-2) yr(-1), respectively, with the B sites emitting 43 %, 22 % and 11 % less in Qi, Qp and Ps respectively. Soil microclimate changed with higher soil temperature and lower soil moisture in B sites after fire. Exchangeable cations and the pH also decreased. The total SOC stocks were not significantly altered, but 6-8 years after wildfires, there was still measurably lower fine root and microbial biomass, while SOC quality changed, indicated by lower the C/N ratio and the labile carbon and a relative increase in refractory SOC forms, which resulted in lower Q(10) values. We found long term effects of wildfires on the physical, chemical and biological soil characteristics, which in turn affected soil respiration. The response of soil respiration to temperature was controlled by moisture and changed with ecosystem type, season, and between B and NB sites. Lower post-burn Q(10) integrated the loss of roots and microbial biomass, change in SOC quality and a decrease in soil moisture.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Bakkali Yakhlef, Salah Eddine</style></author><author><style face="normal" font="default" size="100%">Abourouh, Mohamed</style></author><author><style face="normal" font="default" size="100%">Ducousso, Marc</style></author><author><style face="normal" font="default" size="100%">Duponnois, Robin</style></author><author><style face="normal" font="default" size="100%">Delaruelle, Christine</style></author><author><style face="normal" font="default" size="100%">Mousain, Daniel</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Intraspecific variability of Pisolithus spp. as a response to changes in soil characteristics in a Moroccan cork oak plantation</style></title><secondary-title><style face="normal" font="default" size="100%">Mycology</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Cork oak</style></keyword><keyword><style  face="normal" font="default" size="100%">ITS sequencing</style></keyword><keyword><style  face="normal" font="default" size="100%">Morocco</style></keyword><keyword><style  face="normal" font="default" size="100%">Pisolithus</style></keyword><keyword><style  face="normal" font="default" size="100%">soil parameters</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2011///</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.tandfonline.com/doi/abs/10.1080/21501203.2011.592155</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">2</style></volume><pages><style face="normal" font="default" size="100%">283 - 290</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Soil characteristics may be an important factor in structuring fungal communities. We relate the above- and below-ground distribution of the ectomycorrhizal fungi (EMF) Pisolithus spp. to changes in soil chemistry in a Quercus suber plantation located in the Maâmora forest (Morocco). Intrageneric variability of 115 fruit bodies was studied, using morphological characterization, restriction fragment length polymorphism (RFLP) analyses and internal transcribed spacer (ITS) sequencing. Two Pisolithus spp. genotypes were identified: 97% of the fruit bodies represent Pisolithus arhizus; the remaining 3% correspond to Pisolithus species 4, as previously described by Martin et al. [New Phytologist 153 (2002) 345-357]. Multivariate analysis (PCA) showed that species structure was strongly correlated with soil characteristics. P. arhizus fruit bodies were frequently found in the Eastern part of the plot at low molasic clay, N and P contents, while Pisolithus species 4 were collected only in the Western part at the high molasic clay, N and P contents. To determine whether this change in fruit body structure was expressed at the belowground level, we used morphological and molecular techniques to characterize the Pisolithus ectomycorrhizas. Only ectomycorrhizas of P. arhizus were identified at the low P?N?molasic clay site and disappeared completely at the high P?N?red clay site, where no Pisolithus species 4 mycorrhizas were found. However, autocorrelation among soil parameters makes it difficult to isolate the effects of individual parameters. These results show the local-scale impact of natural spatial heterogeneity on an ectomycorrhizal fungal genus.</style></abstract><issue><style face="normal" font="default" size="100%">4</style></issue><notes><style face="normal" font="default" size="100%">doi: 10.1080/21501203.2011.592155doi: 10.1080/21501203.2011.592155The following values have no corresponding Zotero field:&lt;br/&gt;publisher: Taylor &amp; Francis</style></notes></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Ferreira, Eugénio Mendes</style></author><author><style face="normal" font="default" size="100%">Simões, Nuno</style></author><author><style face="normal" font="default" size="100%">Castro, Isabel Videira e</style></author><author><style face="normal" font="default" size="100%">Carneiro, Luís</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Relationships of Selected Soil Parameters and Natural Pastures Yield in the Montado Ecosystem of the Mediterranean Area Using Multivariate Analysis</style></title><secondary-title><style face="normal" font="default" size="100%">Silva Lusitana</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Montado ecosystem</style></keyword><keyword><style  face="normal" font="default" size="100%">pasture yield</style></keyword><keyword><style  face="normal" font="default" size="100%">soil parameters</style></keyword><keyword><style  face="normal" font="default" size="100%">sustainable agriculture</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2010///</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">18</style></volume><pages><style face="normal" font="default" size="100%">151 - 166</style></pages><isbn><style face="normal" font="default" size="100%">0870-6352 UL - http://www.scielo.gpeari.mctes.pt/scielo.php?script=sci_arttext&amp;pid=S0870-63522010000300003&amp;nrm=iso</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Chemical, physical and biological soil parameters (OM, total N, pH, P2O5, K2O, Mg, B, WHC, free–living nitrogen fixing and rhizobial microflora properties) and pastures yield were characterized and used to determine relationships in 40 locations covering different growth conditions of the &quot;montado&quot; ecosystem. Soil samples were collected in Spring. Reasonable soil fertility was found. The soils presented, in general, intermediate values for OM, K2O, Mg, and Bo and low values for pH and P2O5. Populations of free-living nitrogen fixing bacteria were high, with an average of 4.2 x 107 CFU g-1 of soil, being nitrogenase activity highly variable, with an average of 34 nmoles of C2H4 g-1 of soil h-1. Rhizobial population associated to Trifolium subterraneum was high, with an average of 106 bacteria g-1 of soil, having adequate nitrogen fixing potential for the majority of the soils. Rhizobial population associated to Medicago polymorpha was low, with an average of 6.5 x 104 bacteria g-1 of soil, an insufficient value for a good nodulation, having low nitrogen fixing potential for the majority of the soils. Annual yield of natural pastures varied highly among locals, with an average of 3245 kg ha-1, a usual value for this ecosystem. In general, soil properties were independent of the soil samples. The chemical parameters OM, P2O5, K2O and total N were important factors to pasture yield. A great variability, even in soil samples collected within a short distance, was observed. A relationship between geological origin and productivity was found, being the granitic soils more productive in non-legume plants</style></abstract><notes><style face="normal" font="default" size="100%">The following values have no corresponding Zotero field:&lt;br/&gt;publisher: scielopt</style></notes></record></records></xml>