Nurse rocks are more important than nurse plants in determining the distribution and establishment of globose cacti (Mammillaria) in the Tehuacán Valley, Mexico

Peters, Edward M.; Martorell, Carlos; Ezcurra, Exequiel

doi:10.1016/j.jaridenv.2007.10.004

Cited by 95 publications

(58 citation statements)

References 40 publications

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“…El 75 % de los sistemas insulares analizados en este trabajo se destacan por tener alta cobertura rocosa (Figura 6B) que promedia 57.4 % con variación de 86 % (Bledos) al 20.5 % (Cardo). Investigaciones como las de Parker (1991), Nobel et al (1992), Peters et al (2008), López et al (2009) y Bárcenas-Argüello et al (2010 describen la relación de las rocas con las propiedades del suelo y el crecimiento de las plantas, debido a que mientras más grandes son las rocas, éstas mejoran el efecto protector para las plantas, por reducción de la radiación solar directa, amortiguamiento de temperaturas extremas del suelo, reducción de la evaporación y canalización del agua a las raíces. Cactáceas y otras especies de ambientes secos del noroeste de México, se distribuyen en micrositios sin suelo, por ejemplo, acantilados, cavidades o fisuras en las rocas y flujos de lava antiguos (Bashan et al, 2002;López et al, 2009;Bárcenas-Argüello et al, 2010).…”

Section: Discussionunclassified

Factores topográficos y edáficos que influyen en la estructura de especies perennes de islas de la costa de Sinaloa, México

Soto¹,

García‐Moya

Reyes-Olivas

et al. 2016

Bot. Sci.

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3Autor para la correspondencia: edmundo@colpos.mxResumen: Se tomaron datos de cobertura vegetal de 29 especies perennes y 25 variables del medio en 57 sitios, para investigar la relación vegetación-ambiente en 16 islas de la costa de Sinaloa, México. Los sitios de vegetación se clasificaron con el análisis de conglomerados y se ordenaron con el análisis de correspondencia linearizado (ACL), luego se interpretaron los gradientes ecoló-gicos con el análisis de correspondencia canónica (ACC). Las correlaciones para los datos de especies-medio fueron significativas (P < 0.05) para diez variables ambientales. El primer eje estuvo relacionado con nitratos (0.776) y pH (-0.584), mientras que el segundo eje correlacionó con cobertura rocosa (-0.901), profundidad del suelo (0.757), porcentaje de limo (-0.696), pendiente (-0.685) y porcentaje de arena (0.663). Estas variables fueron las que mejor explicaron la estructura de la vegetación isleña sinaloense. El efecto de tales factores es notorio entre grupos de islas: las que tienen aporte de guano de aves marinas, las islas rocosas de origen volcánico y las de barra arenosa. Palabras clave: análisis multivariante, composición florística, estructura de comunidades, sistemas insulares.Abstract: Cover data of 29 perennial species and 25 environmental variables, in 57 sites, were used to assess vegetation-environment relationships of 16 islands in the coast of Sinaloa, Mexico. The sites were classified through cluster analysis and ordered using detrended correspondence analysis (DCA), then ecological gradients were analyzed with canonical correspondence analysis (CCA). Correlations, species-environment, were significant (P < 0.05) to ten environmental variables. The first axis was related to nitrate (0.776) and pH (-0.584), while the second axis correlated with rocky cover (-0.901), soil depth (0.757), percentage of silt (-0.696), slope (-0.685), and percentage of sand (0.663). These variables were those that best explained the structure of the Sinaloa island vegetation. The effect of such factors is noticeable between island groups: those with addition of seabird guano, islands with rocks of volcanic origin, and those of sandbar.

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Section: Discussionunclassified

Factores topográficos y edáficos que influyen en la estructura de especies perennes de islas de la costa de Sinaloa, México

Soto¹,

García‐Moya

Reyes-Olivas

et al. 2016

Bot. Sci.

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“…Extensively, some plant recruitment is also facilitated by elements of the microrelief such as stones, hollows or crevices, which are called as "nurse objects". It is well known that microclimatic amelioration and escape from seed and seedling predators are the most common mechanisms underlying plant-plant or object-plant facilitation [95][96][97]. However, facilitation by nurse plants to rodents is poorly understood, especially on rodent selection in sand ecology system.…”

Section: The Nurse-protégé Interactions Between Shrubs and Rodentsmentioning

confidence: 99%

Spatial Association of Shrubs and Their Interrelation to Burrowing Site Preference of Subterranean Rodents on Dune Slope in the Otindag Sandy Land, China

Jiang

Wang

et al. 2017

Sustainability

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Rangelands worldwide have more shrubs now, and subterranean rangeland rodents show close interaction to shrubs when choosing a burrowing site. The study was conducted in Otindag Sandy Land in Inner Mongolia, China with the objective of determining the effects of slope position on spatial pattern and interaction of shrubs; how rodents choose their habitat in different slope; and shrubs and rodents influence each other. To accomplish the objective set, we used three physiographic units: Plot 1 (upper slope), Plot 2 (middle slope), and Plot 3 (lower slope), and all individual woody plants and rodent holes in the three plots were mapped. The result of the study showed that: (1) two shrub species show a random distribution trend in all three plots except an aggregated trend only at the smaller scale on the upper slope; (2) the majority of subterranean rodents preferred to select their burrowing sites under the shrub crown, and these selected shrub individuals had generally larger crown length than those unselected individuals. At the same time, the majority of these burrowing sites were located on the lower right direction. (3) The distribution of rodents holes differ across the slopes in the study area. In the three samples, the relative locations of burrowing sites to shrubs are mostly distributed down slope of shrubs. From upper slope to lower slope, this trend gradually enhanced. Our conclusion is that the increase in shrubs represents a pioneer phase in the rehabilitation of degraded sandy land ecosystems, and colonization of subterranean rangeland rodents near the shrubs is a clear indicator of stabilization of sand dunes.

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“…While facilitation of recruitment by 'nurse' plants has been widely documented (FLORES and JURADO 2003), nurse rocks have been poorly documented. However research does report positive interactions between cacti and rocks (PARKER 1987, 1989, NOBEL et al 1992, where rocks ameliorate stressor conditions; this provides a fresh and moist environment without reducing sunlight (PETERS et al 2008). Furthermore small rocks protect seedlings from freezing temperatures (NOBEL 1980).…”

Section: Survival Pathways Within Populationsmentioning

confidence: 99%

Is drought altering plant populations in the mountainous region of Northeastern Mexico?

García

Jurado²

2015

Acta Botanica Croatica

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-Mortality in six plant species was examined in the vegetation of a mountain region in Northeastern Mexico and hypotheses of survival pathways within populations in the ecosystem were tested. Signifi cant differences in the general mortality pattern were found among species indicating species-specifi c responses to stress gradients. Average mortality differed among species: Yucca carnerosana, 33.8%; Pinus cembroides, 29.9%; Larrea tridentata, 25.9%; Hechtia podantha, 13.7%; Agave lechuguilla, 13.0%; and Thelocactus santaclarensis, 9.0%. Within populations, mortality increased with water stress and survivorship increased with less stressful environments. Results from this study may be useful for the development of a management plan to support the conservation and sustainable use of forest vegetation in this mountain community.

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Nurse rocks are more important than nurse plants in determining the distribution and establishment of globose cacti (Mammillaria) in the Tehuacán Valley, Mexico

Cited by 95 publications

References 40 publications

Factores topográficos y edáficos que influyen en la estructura de especies perennes de islas de la costa de Sinaloa, México

Factores topográficos y edáficos que influyen en la estructura de especies perennes de islas de la costa de Sinaloa, México

Spatial Association of Shrubs and Their Interrelation to Burrowing Site Preference of Subterranean Rodents on Dune Slope in the Otindag Sandy Land, China

Is drought altering plant populations in the mountainous region of Northeastern Mexico?

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