Ceacero Ruiz, Carlos Juan

Profesor/a Contratado Doctor
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First Name
Carlos Juan
Last Name
Ceacero Ruiz
Universidad Pablo de Olavide
Fisiología, Anatomía y Biología Celular
Research Center
Fisiología Vegetal
Research Group
PhD programs
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Now showing 1 - 10 of 12
  • Publication
    Is tree shelter protection an effective complement to weed competition management in improving the morphophysiological response of holm oak planted seedlings?
    (SISEF - Italian Society of Silviculture and Forest Ecology, 2014) Ceacero Ruiz, Carlos Juan; Navarro-Cerrillo, Rafael M.; Díaz-Hernández, José Luis; del Campo, Antonio D.
    Weed control is a key aspect affecting seedling response in newly-established plantations. Tree shelter protection may be an effective complement to weed control with a positive effect on the overall response of seedlings. Our study focused on assessing the morpho-physiological response of Holm oak (Quercus ilex L. ballota [Desf.] Samp.) plantations to weed control and individual protection as a combined cultural technique on a cropland site in southern Spain. The weed control treatments (cultivation, herbicide and mulch) were also applied in combination with tree shelters. Morpho-physiological variables including survival, aerial and root morphology, water potential, gas exchange and chlorophyll fluorescence were monitored over a 2-year period. Results showed that weed competition management treatments improved the seedling survival rate compared to the control treatment. Moreover, shelter protection was proven to enhance the height growth of seedlings. At early stages of establishment, and particularly under combined treatments, all plants invested more resources in their aerial parts than in their root system. Seedlings did not regulate water loss as a result of water stress, contrary to the expectations in Mediterranean areas. Under all treatments, especially those combined with tree shelters, seedlings took up to 2 years to achieve morpho-physiological adaptation to site conditions, in terms of height and diameter growths, and water stress behavior. In addition, tree shelters promoted an increase in net photosynthesis compared to non-shelter treatments during the winter period. Tree shelters also limited the emergence of photo-inhibition phenomena in seedlings so that plants under combined treatments showed greater photo-chemical efficiency. Thus, this study supports the effectiveness of tree shelter protection as a complement to weed control treatments. More specifically, a combination of individual protection (shelter) and weed control around seedlings is an interesting technique for reforestation of agroforestry systems in the Mediterranean area.
  • Publication
    Establishment of Quercus ilex L. subsp. ballota [Desf.] Samp. using different weed control strategies in southern Spain
    (Elsevier, 2005) Navarro Cerrillo, Rafael M; Fragueiro, Benito; Ceacero Ruiz, Carlos Juan; Del Campo, Antonio; De Prado, Rafael
    Formerly cropped sites on Mediterranean areas that have been planted with hardwoods are typically associated with low tree survival and growth, with an enduring influence of agricultural weeds in the herbaceous stratum. This study evaluates the survival and growth of planted Holm oak (Quercus ilex L. ballota [Desf.] Samp.) in response to three weed control treatments on a cropland site in southern Spain. The weed control treatments (cultivation, herbicide, and mulch) were applied in combination with tree shelters. Survival, relative growth rate, biomass, and root architecture were monitored over a 1-year period. Shelter microclimate was measured 1 year after establishment. Trees in the ground management treatments consistently had greater levels of survival than the control. Although these effects were not significantly different between weed control treatments, we found that tree shelters had a significant effect on growth and biomass. There were also significant treatment effects on root architecture. The response of trees to weed control treatments and tree shelters are consistent with other studies, which suggest a positive effect related to the interplay of microclimate change and resource availability. Our results suggest that weed control may improve early survival in forest plantations and, in combination with tree shelters, merit consideration in Mediterranean afforestation programs.
  • Publication
    Interactions between soil gravel content and neighboring vegetation control management in oak seedling establishment success in Mediterranean environments
    (Elsevier, 2012-02-01) Ceacero Ruiz, Carlos Juan; Díaz-Hernández, José Luis; del Campo, Antonio D.; Navarro-Cerrillo, Rafael M.
    Restoration of vegetation in Mediterranean areas is limited by several factors, some of which are poorly understood, such as soil stoniness and competition with natural vegetation. This paper analyzes the interaction between weed management treatments (cultivation, herbicide, mulch and tree shelter) and the profile stoniness in Holm oak (Quercus ilex L. sub. ballota (Desf.) Samp.) seedling establishment in Mediterranean areas. Our experimental trials show that profile gravel content is a key factor in seedling survival, in which optimal reforestation sites would be defined by gravel content [removed]15%. The soil profile gravel content caused severe water limitations, especially important in the first year after planting, which influenced the effectiveness of neighboring vegetation control techniques for seedling establishment success. This study also confirms the positive effect of competition management techniques on survival. The treatments tested showed an improvement in the survival rate, but not in growth rate, over the control treatment throughout the monitoring period. We have obtained a vegetation response model in which the beneficial effects of competition control on the success of oak seedling establishment are distorted by soil gravel content.
  • Publication
    Soil rock fragment is stronger driver of spatio-temporal soil water dynamics and efficiency of water use than cultural management in holm oak plantations
    (Elsevier, 2019-10-15) Ceacero Ruiz, Carlos Juan; Díaz-Hernández, José Luis; del Campo, Antonio D.; Navarro-Cerrillo, Rafael M.
    Water is the main component in the conservation and functioning of Mediterranean ecosystems. There is a trade-off between plant water use during establishment and soil water conservation. Rock fragments and cultural management are two key factors affecting soil water dynamics on forest establishment. In this work, we studied the interactions of different cultural management techniques (tillage, herbicide and mulching) with soil rock fragment content (soil gravel) and their effects on the spatio-temporal water dynamics and efficiency of water use in Mediterranean forest plantations. Soil water content (SWC, l/m3), soil water depletion rate (k) and water use efficiency (WUE, μmol CO2/mol H2O) were monitored along a two-year period in a holm oak reforestation. The results show that SWC and its spatio-temporal dynamics were defined by a significant interaction between the cultural management techniques and the rock fragment content. Cultural management techniques had weak effects on SWC when compared to the control treatment, although significant differences were found. The soil rock fragment content accounted for most of the variability in SWC; and soils with a content below 5% had higher water contents. The cultural treatments showed some influence on water behaviour under SWC more limited conditions, that is, when rock fragment contents was higher than 15% and/or in summer periods. Finally, SWC was also a limiting factor for the WUE of holm oak seedlings, being the WUE values higher when the soil water supply was more restricted. The maximum WUE was reached at a rock fragment content in the soil profile of 17%, combined with mulch treatment, during dry summer conditions. Thus, the interaction between the rock fragment content and cultural management is a key element in trade-offs between water conservation and plant water-use objectives in Mediterranean forest restoration strategies.
  • Publication
    Caracterización fisiológica de tres razas de maíz peruano cultivadas con altos contenidos de boro
    (Universidad Nacional Jorge Basadre Grohmann, Tacna - Perú, 2020) Mamani-Huarcaya, Betty M; Luque-Zuñiga, Bret; Ceacero Ruiz, Carlos Juan; Rexach, Jesús; Fernández Cutire, Óscar
    El boro (B) es un nutriente esencial para un adecuado desarrollo de las plantas. En regiones áridas o semiáridas es frecuente encontrar suelos con elevado contenido de B. Este exceso de B desencadena problemas importantes de toxicidad en las plantas, que conducen a una reducción de su crecimiento y a una disminución de la fotosíntesis, entre otros efectos. El maíz es uno de los cultivos de mayor importancia en Perú. Muchas de las tierras de cultivo del sur del Perú presentan contenidos elevados de B. La selección de razas que sean tolerantes a estas condiciones es fundamental para obtener mejores rendimientos en las cosechas. El objetivo de este trabajo fue caracterizar la tolerancia al exceso de B de las razas de maíz Pachía, Lipe-Coruca y Sama, originarias de la región de Tacna (Perú). Para ello, se cultivaron estas razas de maíz en macetas con tierras con alto contenido de B (214 ppm), y fueron -1 regadas con aguas del río Sama cuya concentración de B fue de 14.63 mgL . Las razas Sama y Lipe-Coruca mostraron las mayores alturas con respecto al vástago. Además, la raza Sama presentó los más bajos contenidos foliares de B soluble e insoluble, y los mayores contenidos de clorofilas y carotenoides. En resumen, estos resultados sugieren que Sama es la raza más tolerante al exceso de B. Así, los menores contenidos de B y el mayor contenido de estos pigmentos de Sama permitirían una mejor adaptación al estrés generado por la acumulación de B en las tierras de cultivo.
  • Publication
    Rainfall partitioning after thinning in two low-biomass semiarid forests: Impact of meteorological variables and forest structure on the effectiveness of water-oriented treatments
    (Elsevier, 2018) del Campo, Antonio D; González-Sanchis, María; Lidón, Antonio; García-Prats, Alberto; Ceacero Ruiz, Carlos Juan
    Water-oriented forest management is an urgent need in semiarid catchments. In the case of low-biomass forests and shrublands, the magnitude, efficiency and temporal duration of thinning effects on rainfall partitioning needs further attention. This work studies the effects of juvenile thinning and shrub clearing on stemflow (Stf), throughfall (Thr) and interception (It) in two low-biomass forests (CAL: post-fire Aleppo pine saplings with 74% of basal area, BA, removed; and HU: evergreen oak coppice with 41% of BA removed), as well as the relative contribution of the event meteorology. The effects are compared with a control plot during the first 3–4 years. Stf rate (%) decreased with density and, on a tree scale, it was enhanced by the treatment only in the bigger oaks. Event Thr increased from 55 to 81% and from 68 to 86% of gross rainfall (Pg) for CAL and HU respectively after thinning, resulting in about 15% less intercepted Pg. High evaporative conditions and an open (ventilated) forest structure led to high It rates in the controls when comparing with other studies, thus making the treatments more efficient in net precipitation (Pn) gain (Pg intercepted decreased 17% or 2.3% per unit of LAI or BA removed respectively). In general, depths (mm) were mostly explained (>75%) by the rainfall characteristics of the event (e.g. amount, duration, intensity), with a limited contribution from forest structure (e.g. cover, LAI) and event meteorology (e.g. temperature, wind speed, vapor pressure deficit). On the contrary, when expressed as rates (% of Pg), forest structure and event-meteorology gained importance (explaining 25–65%), especially in the drier site (CAL). In this site, the low gain in Pn (∼25 mm per year on average) was offset with no temporal dampening during the span of this study, as observed in the wetter site (HU), where plant growth tended to mitigate the effect of the treatment by the end of the study. The results presented here make a contribution to a better understanding of the effects of water-oriented forest management in low-biomass semiarid forests.
  • Publication
    Legume living mulch for afforestation in agricultural land in Southern Spain
    (Elsevier, 2008) Navarro Cerrillo, Rafael M; Ariza, David; González, Luis; del Campo, Antonio; Arjona, Miguel; Ceacero Ruiz, Carlos Juan
    Weed control is essential for a successful establishment and growth of tree seedlings in former agricultural land. Weed control methods are effective but can be costly in terms of time, damage to non-target vegetation, or increased soil erosion. Alternatively, some living mulches can exclude undesirable vegetation, protect the soil, compete minimally with associated trees, and supplement soil nitrogen, but there is a lack of knowledge on living mulch systems in Mediterranean afforestation. Thus, the objective of the present study was to evaluate the effects on Holm oak (Quercus ilex L.), mastic tree (Pistacia lentiscus L.), wild olive (Olea europaea L. var. sylvestris Brot.) and terebinth (Pistacia terebinthus L.) seedlings of wrinkled medick (Medicago rugosa Desr.) mulch. Survival, growth, photosynthesis, foliar nutrient and soil parameters were measured during the first year. 36 months after planting, seedlings in the living mulch had survival rates of between 60% for mastic tree and 8.3% for Holm oak, compared with survival rates of 70% in the mechanical treatment for mastic tree and 2% for Holm oak. Photosynthesis and foliar nutrient concentrations were improved by the living mulch treatment. The soil under the living mulch had higher CEC, soil organic matter levels and nitrogen content in comparison to the cultivated soil. The response of living mulch differs between species and environmental conditions but our study suggests a positive effect due to soil protection. Living mulch may be a promise alternative for use in Mediterranean afforestation programs.
  • Publication
    Seedling quality and field performance of commercial stocklots of containerized holm oak (Quercus ilex) in Mediterranean Spain: An approach for establishing a quality standard
    (Springer, 2010) del Campo, Antonio D; Navarro Cerrillo, Rafael M; Ceacero Ruiz, Carlos Juan
    Holm oak is the hardwood most used for reforestation in Mediterranean Spain, which makes the development of stock quality standards in order to improve establishment success, a priority. However, its nursery culture is characterized by a wide range of practices resulting in stock heterogeneity and a potentially varied outplanting performance. Previous research has focused on specific seedling quality attributes, obviating the integral effect of nursery culture on overall quality. We studied growing regime, seedling quality, and field performance in nine holm oak stocklots produced in commercial nurseries during two consecutive growing years. Results proved variations in field performance were related to stocklot quality and, hence, to the growing regime practised. This dependence on stock quality may vary with planting site weather: in the drier year, survival was related to attributes like height, water status and K concentration, while, in the second, milder year, only growth performance was related to nutrient concentrations, plant size and water status. Results indicated the following quality standards for height: 12-17 cm, diameter: 3. 5-4. 8 mm, shoot and root weights: 1. 3-1. 6 and 2. 8-4. 7 g, respectively, N-P-K foliar concentrations: over 10-0. 9-3. 7 mg g-1, respectively and in water status parameters: EMX < 5 MPa and SWDTL > 15%. These attributes can be adjusted using nursery cultural practices in order to meet seedling quality standards for holm oak for planting across similar sites.
  • Publication
    Elements for a non-detriment finding of Cedrela spp. in Bolivia-A CITES implementation case study
    (Elsevier, 2013) Navarro Cerrillo, Rafael M; Agote, Nahia; Pizarro, Fernando; Ceacero Ruiz, Carlos Juan; Palacios, Guillermo
    Cedrela odorata and C. fissilis are two tropical tree species that have been widely harvested for their timber. In response to this heavy exploitation, the species have been listed in Appendix III of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES). The aim of this study was to provide important elements necessary for the making of CITES Non-Detriment Findings for Cedrela spp. in Bolivia using a wide variety of sources of information on its distribution, population structure, and management at multiple spatial scales. A national large-scale database of forest inventories was created, including information about trees of certain species with diameter at breast height (dbh) ≥;20. These data were used to make non-detriment findings (NDFs) following CITES guidance for timber species. Spatial prediction of Cedrela habitat revealed a consistent pattern of habitat probability across Bolivia. The genus occurs in areas formerly or currently occupied by ten of the twelve forest types described as habitat for Cedrela odorata and C. fissilis, with a density ranging from 0.4 to 159 trees>60cmdbh per 100ha. Based on these data, the annual export quota for Cedrela in Bolivia should be 3513.1m3 of timber. This country-level case study could provide a roadmap for other studies that may eventually lead to uplisting the genus. Including Cedrela in CITES Appendix II may help to ensure that its harvest to supply international markets is conducted in a sustainable manner, without damaging the target species or their ecosystem.
  • Publication
    Nursery location and potassium enrichment in Aleppo pine stock 1. Effect on nursery culture, growth, allometry and seedling quality
    (Oxford Academic, 2011-04-11) del Campo, Antonio D; Hermoso, Javier; Ceacero Ruiz, Carlos Juan; Navarro Cerrillo, Rafael M
    There is a need for a better understanding of the primary role of macronutrients in Aleppo pine stock quality and for producing larger nutrient-loaded stock, which may be challenging for inland nurseries. The influence of nursery location and fertilization on nursery culture, growth, allometry and seedling quality of Aleppo pine was studied in seedlings cultivated over the 2006 growing year. Fertilization treatments considered how a K enrichment performed over common programs currently being practiced and divided into three levels of K/N ratio: 0.63-0.89 (normal), 1.81-1.89 (high), and 2.25-2.53 (very high). Results showed that fertilization had a minor effect on seedling growth and allometry in comparison with location, which was the governing factor. However, fertilizing treatments significantly affected final seedling attributes, which has its origin on the early treatment differences that were kept up to the end of culture. Higher nutrient supply treatments produced the highest nutrient concentration in seedlings but they were associated with lower fertilization efficiencies. Fertilizer efficiency was approximately twofold in the coastal nursery for the three macronutrients, although concentration was higher in the inland nursery due to lower seedling growth. It is concluded that warmer regions are more suitable for producing large stock more efficiently