Please use this identifier to cite or link to this item: http://dspace.utpl.edu.ec/jspui/handle/123456789/19175
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dc.contributor.authorEspinosa íñiguez, C.es_ES
dc.date.accessioned2017-06-16T22:03:05Z-
dc.date.available2017-06-16T22:03:05Z-
dc.date.submitted01/01/2014es_ES
dc.identifierhttp://dx.doi.org/10.1017/S0266467413000692es_ES
dc.identifier.isbn2664674es_ES
dc.identifier.otherhttp://dx.doi.org/10.1017/S0266467413000692es_ES
dc.identifier.urihttp://dspace.utpl.edu.ec/handle/123456789/19175-
dc.description.abstractAbstract: Positive plant interactions have strong effects on plant diversity at several spatial scales, expanding species distribution under stressful conditions. We evaluated the joint effect of climate and grazing on the nurse effect of Croton wagneri, by monitoring several community attributes at two spatial scales: microhabitat and plant community. Two very close locations that only differed in grazing intensity were surveyed in an Ecuadorian dry scrub ecosystem. At each location, two 30 � 30-m plots were established at four altitudinal levels (1500, 2630, 1959 and 2100 m asl) and 40 microsites were surveyed in each plot. Croton wagneri acted as community hubs, increasing species richness and plant cover at both scales. Beneath nurses mean richness and cover values were 3.4 and 21.9%, and in open areas 2.3 and 4.5%, respectively. Magnitude of nurse effect was dependent on climate and grazing conditions. In ungrazed locations, cover increased and diversity reduced with altitude, while grazed locations showed the opposite trend. In ungrazed plots the interactions shifted from positive to negative with altitude, in grazed locations interactions remained positive. We conclude that the nurse effect is a key mechanism regulating community properties not only at microsite but also at the entire community scale. Copyright © Cambridge University Press 2013.es_ES
dc.languageIngléses_ES
dc.subjectaltitudees_ES
dc.subjectbiotic indiceses_ES
dc.subjectcommunity ecologyes_ES
dc.subjectcroton wagneries_ES
dc.subjectdiversityes_ES
dc.subjectecuadores_ES
dc.subjectenvironmental gradientes_ES
dc.subjectfacilitationes_ES
dc.subjectpatch structurees_ES
dc.subjectspatial scalees_ES
dc.titleClimate and grazing control nurse effects in an Ecuadorian dry shrubby communityes_ES
dc.typeArticlees_ES
dc.publisherJournal of Tropical Ecologyes_ES
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