Neobuxbaumia tetetzo size and length of its apical spines in a light gradient under Mimosa luisana, a nurse shrub
Environmental conditions and resource availability under the canopy of nurse shrubs in xeric ecosystems are not homogeneous and affect growth rate, survivorship and some morphological traits of young cacti plants. We studied the effect of a gradient of photosynthetically active radiation (PAR) on tw...
| Main Authors: | , , , |
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| Format: | Online |
| Sprog: | spa |
| Udgivet: |
Instituto de Ecología, A.C.
2007
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| Online adgang: | https://abm.ojs.inecol.mx/index.php/abm/article/view/1039 |
| _version_ | 1799771270935478272 |
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| author | Bravo-Mendoza, Mariana Espinosa-Cantú, Adriana Castellanos-Vargas, Iván Cano-Santana, Zenón |
| author_facet | Bravo-Mendoza, Mariana Espinosa-Cantú, Adriana Castellanos-Vargas, Iván Cano-Santana, Zenón |
| author_sort | Bravo-Mendoza, Mariana |
| collection | ABM |
| description | Environmental conditions and resource availability under the canopy of nurse shrubs in xeric ecosystems are not homogeneous and affect growth rate, survivorship and some morphological traits of young cacti plants. We studied the effect of a gradient of photosynthetically active radiation (PAR) on two traits of the columnar cactus Neobuxbaumia tetetzo: (1) individuals height and (2) length of its apical thorns under the nurse shrub Mimosa luisana in the Zapotitlán Salinas Valley, Puebla (Mexico). We found a positive correlation between the length of the apical thorns and the distance from the nurse shrub, as well as between the height of N. tetetzo and the length of apical thorns. Likewise, the correlation between N. tetetzo size and the distance from the nurse shrub was positive. A multiple regression analysis showed that the length of the apical thorns depends on the size of N. tetetzo individuals, but not on the distance from the nurse shrub. Additionally, the sizes of the N. tetetzo individuals were also dependent on distance from the nurse shrub. When N. tetetzo establishes on the periphery of a nurse shrub the recruitment probability is low as a cause of the high radiation level. Likewise, this factor can have a negative effect on the growth rate because high temperatures reduce photosynthetic rates. |
| format | Online |
| id | oai:oai.abm.ojs.inecol.mx:article-1039 |
| institution | Acta Botanica Mexicana |
| language | spa |
| publishDate | 2007 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | oai:oai.abm.ojs.inecol.mx:article-10392022-12-24T04:31:18Z Neobuxbaumia tetetzo size and length of its apical spines in a light gradient under Mimosa luisana, a nurse shrub Tamaño de Neobuxbaumia tetezo y longitud de sus espinas apicales en un gradiente de luz bajo Mimosa luisana, un arbusto nodriza Bravo-Mendoza, Mariana Espinosa-Cantú, Adriana Castellanos-Vargas, Iván Cano-Santana, Zenón length of apical thorns Neobuxbaumia tetetzo photosynthetically active radiation Zapotitlán Salinas-Puebla longitud de espinas apicales Neobuxbaumia tetetzo radiación fotosintéticamente activa Zapotitlán Salinas-Puebla Environmental conditions and resource availability under the canopy of nurse shrubs in xeric ecosystems are not homogeneous and affect growth rate, survivorship and some morphological traits of young cacti plants. We studied the effect of a gradient of photosynthetically active radiation (PAR) on two traits of the columnar cactus Neobuxbaumia tetetzo: (1) individuals height and (2) length of its apical thorns under the nurse shrub Mimosa luisana in the Zapotitlán Salinas Valley, Puebla (Mexico). We found a positive correlation between the length of the apical thorns and the distance from the nurse shrub, as well as between the height of N. tetetzo and the length of apical thorns. Likewise, the correlation between N. tetetzo size and the distance from the nurse shrub was positive. A multiple regression analysis showed that the length of the apical thorns depends on the size of N. tetetzo individuals, but not on the distance from the nurse shrub. Additionally, the sizes of the N. tetetzo individuals were also dependent on distance from the nurse shrub. When N. tetetzo establishes on the periphery of a nurse shrub the recruitment probability is low as a cause of the high radiation level. Likewise, this factor can have a negative effect on the growth rate because high temperatures reduce photosynthetic rates. Las condiciones ambientales y los recursos bajo el dosel de un arbusto nodriza no son uniformes y afectan las tasas de crecimiento y de supervivencia de las plantas que lo usan como refugio, así como algunas características morfológicas. En el Valle de Zapotitlán Salinas, Puebla, se estudió el efecto que tiene la radiación fotosintéticamente activa (RFA) en función de su distancia al centro de Mimosa luisana sobre dos características morfométricas de Neobuxbaumia tetetzo: (1) la longitud de las espinas apicales y (2) el tamaño de los individuos. Se encontraron correlaciones significativas y positivas entre la longitud máxima de las espinas apicales y su distancia al centro del arbusto, así como entre el tamaño de N. tetetzo y la longitud de las espinas apicales. Del mismo modo, el tamaño de N. tetetzo y su distancia al centro de la nodriza guardan una correlación significativa y positiva. Un análisis de regresión múltiple mostró que el largo de las espinas apicales de N. tetetzo se vincula con el tamaño del individuo, pero no de su distancia al arbusto. Por su parte, el tamaño de N. tetetzo es una característica dependiente de su distancia a la nodriza. Se discute el hecho de que cuando N. tetetzo se establece cerca de la periferia de M. luisana existe una baja probabilidad de reclutamiento debida a la incidencia de altos niveles de radiación, los cuales también pueden afectar negativamente el crecimiento de N. tetetzo, debido a las altas temperaturas asociadas que afectan negativamente sus tasas fotosintéticas. Instituto de Ecología, A.C. 2007-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion artículo evaluado por pares application/pdf https://abm.ojs.inecol.mx/index.php/abm/article/view/1039 10.21829/abm79.2007.1039 Acta Botanica Mexicana; No. 79 (2007); 69-80 Acta Botanica Mexicana; Núm. 79 (2007); 69-80 2448-7589 0187-7151 spa https://abm.ojs.inecol.mx/index.php/abm/article/view/1039/1200 Derechos de autor 2016 Acta Botanica Mexicana https://creativecommons.org/licenses/by-nc/4.0 |
| spellingShingle | Bravo-Mendoza, Mariana Espinosa-Cantú, Adriana Castellanos-Vargas, Iván Cano-Santana, Zenón Neobuxbaumia tetetzo size and length of its apical spines in a light gradient under Mimosa luisana, a nurse shrub |
| title | Neobuxbaumia tetetzo size and length of its apical spines in a light gradient under Mimosa luisana, a nurse shrub |
| title_full | Neobuxbaumia tetetzo size and length of its apical spines in a light gradient under Mimosa luisana, a nurse shrub |
| title_fullStr | Neobuxbaumia tetetzo size and length of its apical spines in a light gradient under Mimosa luisana, a nurse shrub |
| title_full_unstemmed | Neobuxbaumia tetetzo size and length of its apical spines in a light gradient under Mimosa luisana, a nurse shrub |
| title_short | Neobuxbaumia tetetzo size and length of its apical spines in a light gradient under Mimosa luisana, a nurse shrub |
| title_sort | neobuxbaumia tetetzo size and length of its apical spines in a light gradient under mimosa luisana, a nurse shrub |
| url | https://abm.ojs.inecol.mx/index.php/abm/article/view/1039 |
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