<?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%">Ferretti, M</style></author><author><style face="normal" font="default" size="100%">Bonini, I</style></author><author><style face="normal" font="default" size="100%">Bussotti, F</style></author><author><style face="normal" font="default" size="100%">Celesti, C</style></author><author><style face="normal" font="default" size="100%">Cenni, E</style></author><author><style face="normal" font="default" size="100%">Chiarucci, A</style></author><author><style face="normal" font="default" size="100%">Cozzi, A</style></author><author><style face="normal" font="default" size="100%">De Dominicis, V</style></author><author><style face="normal" font="default" size="100%">Grossoni, P</style></author><author><style face="normal" font="default" size="100%">Leonzio, C</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Short-term changes of response indicators of ecosystem status in broadleaved forests in Tuscany (central Italy)</style></title><secondary-title><style face="normal" font="default" size="100%">WATER AIR AND SOIL POLLUTION</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Biodiversity</style></keyword><keyword><style  face="normal" font="default" size="100%">crown condition</style></keyword><keyword><style  face="normal" font="default" size="100%">crown productivity</style></keyword><keyword><style  face="normal" font="default" size="100%">forest health</style></keyword><keyword><style  face="normal" font="default" size="100%">long-term monitoring</style></keyword><keyword><style  face="normal" font="default" size="100%">Permanent plots</style></keyword><keyword><style  face="normal" font="default" size="100%">response indicators</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1999</style></year></dates><publisher><style face="normal" font="default" size="100%">KLUWER ACADEMIC PUBL</style></publisher><pub-location><style face="normal" font="default" size="100%">SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS</style></pub-location><volume><style face="normal" font="default" size="100%">116</style></volume><pages><style face="normal" font="default" size="100%">351-356</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The status of different response indicators of forest condition were measured and assessed between 1995 and 1997 at 6 Permanent Monitoring Plots (PMPs) in Tuscany (central Italy), where beech, holm oak and Turkey oak are the most frequent tree species. Foliage transparency, leaf damage and crown dieback have changed significantly over the monitoring period. Leaf area, length of the current year shoots, and total leaf area changed as well, but only for Turkey oak. Changes were consistent between and within the plots. Different indices of plant diversity showed marked changes, apparently linked to natural dynamics within individual ecosystems. These rapid and contrasting fluctuations in the various indicators of forest ecosystem make it difficult to derive a synthesis about the general condition of ecosystems and - especially - about the effects of air pollution.</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%">Bussotti, F</style></author><author><style face="normal" font="default" size="100%">Ferretti, M</style></author><author><style face="normal" font="default" size="100%">Cozzi, A</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Crown status of holm oak (Quercus ilex L.) trees as related to phenology and environmental stress</style></title><secondary-title><style face="normal" font="default" size="100%">Water, Air, &amp; Soil …</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">abscission</style></keyword><keyword><style  face="normal" font="default" size="100%">crown condition</style></keyword><keyword><style  face="normal" font="default" size="100%">holm oak (voyant)</style></keyword><keyword><style  face="normal" font="default" size="100%">leaves</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1995</style></year></dates><volume><style face="normal" font="default" size="100%">85</style></volume><pages><style face="normal" font="default" size="100%">1269-1274</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">In order to study the possible interactions between air pollution and climate coaditions in Mediterranean evergream broadleaf species, since 1987 we have been monitoring the annual and infra-annual variations in crown density of Quercus ilex L. (holm oak) in a permanent sample plot. The behaviour of crown density has been compared with litterfall pattern and aging processes in leaves. The results of this study confirm the important impact of climate on crown condition in Meditea-raneeaa broadleaves, so that even the role of non- acute pollution can be disguised. Xeromorph adaptations in holm oak leaves are also a mechanism providing a greater protection against poltutants.</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%">Bussotti, F</style></author><author><style face="normal" font="default" size="100%">BROGI, L</style></author><author><style face="normal" font="default" size="100%">Grossoni, P</style></author><author><style face="normal" font="default" size="100%">Cozzi, A</style></author><author><style face="normal" font="default" size="100%">GELLINI, R</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">CROWN STRUCTURE MODIFICATIONS IN RELATION TO AIR-POLLUTION</style></title><secondary-title><style face="normal" font="default" size="100%">LANDSCAPE AND URBAN PLANNING</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">crown structure</style></keyword><keyword><style  face="normal" font="default" size="100%">forest formations</style></keyword><keyword><style  face="normal" font="default" size="100%">Mediterranean</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1993</style></year></dates><publisher><style face="normal" font="default" size="100%">ELSEVIER SCIENCE BV</style></publisher><pub-location><style face="normal" font="default" size="100%">PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS</style></pub-location><volume><style face="normal" font="default" size="100%">24</style></volume><pages><style face="normal" font="default" size="100%">167-173</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Analysis of crown structure and crown modifications plays a role of primary importance in surveys of `new types of forest damage', since it is a decisive parameter in assessing the health status of a tree. Several forms of ramification alterations have been described in central and northern European species (Norway spruce, beech, Durmast oak, English oak, birch). This study examines the situation in Tuscany and offers a description of the alterations found in the main species typical of the Mediterranean region (Turkey oak, pubescent oak, holm oak, stone pine). The article discusses the potential impact of these alterations on the most typical forest formations, the ones which characterize the Tuscan landscape, and it describes the modifications already under way.</style></abstract></record></records></xml>