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Fenología reproductiva y capacidad de regeneración de dos cardones, stenocereus griseus (haw.) Buxb. Y cereus repandus (l.) Mill. (cactaceae)
Nassar,Jafet M; Emaldi,Unai;
Acta Botánica Venezuelica , 2008,
Abstract: stenocereus griseus and cereus repandus are two of the most abundant and widely distributed columnar cacti in the arid and semiarid regions of venezuela. despite their value as keystone species for wildlife and their potential economic value, information on their reproductive activity and regeneration capacities is quite limited. these aspects were evaluated in natural populations from padre diego, lara state, and paraguana peninsula, falcon state. these cacti have broad time windows for reproduction and considerably high fecundity levels (s. griseus: 44,225 seeds/ind, c. repandus: 322,749 seeds/ind), which confer them great advantages in terms of natural regeneration and propagation. these species depend on nurse plants for their establishment. the highest percentages of survival occurred under the shadow of trees. under natural conditions, these species can produce half a ton of fruit pulp per hectare.
Uso, manejo y conservación de Stenocereus griseus (Haworth) Buxb. en la Alta Guajira colombiana
Villalobos Hernández Soraya,Vargas Ríos Orlando
Acta Biológica Colombiana , 2006,
Abstract: En la Alta Guajira del Caribe colombiano, el cactus Stenocereus griseus es muy utilizado por la comunidad Wayuu. En el presente trabajo se caracteriza el sistema de uso y manejo, así como la demanda y oferta potencial de S. griseus en dos localidades. Una evaluación de los factores que afectan las poblaciones permitió determinar cinco categorías de da o, de las cuales las más importantes son las ocasionadas por corte con machete (tipo I), insectos (Tipo II) y cabras (Tipo III). El uso actual de Stenocereus griseus se restringe a la colecta de la madera seca (“yotojoro”) para construcción de viviendas tradicionales en la cultura Wayuu; la colecta de frutos en temporada de cosecha y la cosecha de tallos jóvenes para alimento de cabras y cercas vivas. La demanda anual de “yotojoro” está sujeta a la necesidad de construcción de los habitantes del área, que es definida como ocasional. El método actual de cosecha y extracción del mismo no está generando desequilibrio local en el mantenimiento de la especie. La demanda de cardones para cercas vivas y pastoreo es constante durante todo el a o y generan el mayor impacto de da o. Finalmente, se discuten los principales problemas de conservación de la especie, y se recomienda establecer alternativas de manejo para las actividades de pastoreo, dado que con el ritmo actual de extracción, la población de cactus está expuesta a una inminente disminución local.
Clasificación y selección tradicional de pitaya (Stenocereus pruinosus (Otto) Buxb.) en Tianguistengo, Oaxaca y variación morfológica de cultivares
Rosales-Bustamante, E. P.;Luna-Morales, C. del C.;Cruz-León, A.;
Revista Chapingo. Serie horticultura , 2009,
Abstract: given the natural and cultural importance of columnar cacti in mexico, in an indigenous mixtec community in which these species have been used and managed for centuries, the infraspecific traditional classification and the morphological variation of 41 characters of stem, flower and fruit in 15 land races of pitaya (stenocereus pruinosus) were studied. key informants identified 25 land races, using stem and fruit traits; 10 of these landraces were the most popular, and 15 were analyzed using principal components and cluster analyses. three principal components explained more than 50% of the variation and cluster analyses defined five groups of land races. three selection tendencies were identified: large and heavy fruits, long and many thorns, short and few thorns. yield per plant, harvest season, hardness of peel, moisture content and fruit color were not evaluated, but are used for selection by farmers.
Características morfo-anatómicas y metabolismo fotosintético en plántulas de stenocereus queretaroensis (cactaceae): su significado adaptativo
Loza-Cornejo,Sofía; Terrazas,Teresa; López-Mata,Lauro; Trejo,Carlos;
Interciencia , 2003,
Abstract: summary morpho-anatomical characters and the photosynthetic metabolism of stenocereus queretaroensis (weber) buxb. seedlings were studied to examine these features during their ontogeny. more than 500 seedlings were sowed in nurseries; during the first three months they were harvested every week and, thereafter, every month until completing 56 weeks, to record the morpho-anatomical changes. some seedlings were collected every 3h during 24h at the mentioned time intervals and stored in liquid n2 to estimate the acid concentration (tritated protons) for unit of fresh weight. seedlings had a shoot 3.6cm in height, with seven ribs, and roots with the same length after 56 weeks of age; cotyledons withered at one year old. the hypocotyl-root axis as well as the shoot had simple epidermis and scarce stomata; hypoderm was also of one layer and differs from the mature shoot. vascular cambium developed in one year-old seedlings; secondary xylem was distinguished from the mature shoot by the occurrence of wide band tracheids and lack of fibers. the tritated protons showed irregular fluctuations during the first weeks of growth, however acidity increased with seedling age. in the week 56, the increment started at 18:00 reaching a maximum of 45.19μmolh+·g-1 tissue at 06:00, showing the typical crassulacean acid metabolism pattern. the rapid root growth, the occurrence of wide band tracheids and the scarce stomata were interpreted as adaptations to avoid drying.
Uso, manejo y conservacion de “yosú” Stenocereus griseus (Cactaceae),en la alta guajira colombiana Usage, Managment and Conservation of “yosú”, Stenocereus griseus (Cactaceae), in the Upper Guajira, Colombia  [cached]
Villalobos Soraya,Vargas Orlando,Melo Sandra
Acta Biológica Colombiana , 2007,
Abstract: En este trabajo se caracteriza el sistema de uso, manejo, demanda y oferta potencial de Stenocereus griseus, un cactus columnar muy utilizado por la comunidad indígena Wayúu en la Guajira, Caribe colombiano. Actualmente el uso de S. griseus se restringe a la recolección de madera seca ("yotojoro") para construcción de viviendas, la recolección de frutos para la alimentación, de tallos jóvenes para alimentos de cabras y para utilizarlos en cercas vivas. Una evaluación de los factores que afectan las poblaciones permitió determinar cinco categorías de da o: las ocasionadas por corte con machete (tipo I), insectos (tipo II), cabras (tipo III), aves (tipo IV) y viento (tipo V). La demanda anual de "yotojoro" está sujeta a la necesidad de construcción de los habitantes del área, que es definida como ocasional. El método actual de cosecha y extracción del mismo no está generando desequilibrio local en el mantenimiento de la especie. La demanda de cardones para cercas vivas y pastoreo es constante durante todo el a o y es la que genera el mayor impacto de da o. Finalmente, se discuten los principales problemas de conservación de la especie y se recomienda establecer alternativas de manejo para las actividades de pastoreo. The present paper characterizes the usage and handling system, demand and potential offer of Stenocereus griseus, a columnar cactus widely used by the "Wayúu", an indigenous community in the Colombian Caribbean region of "La Guajira". The current use of S. griseus is restricted to the collection of dry timber wood ("yotojoro") for house building; of the fruit, which is used for human consumption; and of the young stems, used as goat fodder, and as living fences. An evaluation of the factors that affect the populations allowed the detection of five different harm categories: those caused by cuttings with cutlass (type I); by insects (type II); goats (type III); birds (type IV); and wind (type V). The annual "yotojoro" demand is subject to the building needs of the people in the area, which is defined as occasional. The current cropping and extraction method was not found to be causing any local disequilibrium in the species population maintenance. There is a steady cardon demand for fodder and living fences all year long; one which is causing the highest harm impact. Finally, the main conservation problems of the species are discussed, together with the suggestion of management alternatives for grazing activities.
Anatomía caulinar de las especies del género Stenocereus (Cactaceae) Stem anatomy of the species of the genus Stenocereus (Cactaceae)
Teresa TERRAZAS,Sofía LOZA-CORNEJO,Hilda J ARREOLA-NAVA
Acta Botánica Venezuelica , 2005,
Abstract: Se describió la anatomía caulinar de 22 especies del género Stenocereus y se comparó con otras Cactoideae. Stenocereus presentó una cutícula lisa y delgada, las células epidérmicas presentaron divisiones oblicuas, distinguiéndose S. stellatus, S. treleasei y S. zopilotensis por su abundancia. La existencia de cuerpos de sílice en epidermis e hipodermis caracteriza al género. La abundancia de células de mucílago es un atributo que comparten las especies de Stenocereus con su taxón hermano; su ubicación en el córtex permitió reconocer dos grupos de especies. Destaca el desarrollo de la felodermis y la presencia de placa de perforación múltiple en elementos de vaso, caracteres descritos por primera vez para el género. La combinación células de mucílago y cuerpos de sílice permite distinguir a las especies de Stenocereus de otros miembros de la familia Cactaceae. Stenocereus stem anatomy was described and compared with other Cactoideae. Stenocereus had a smooth and thin cuticle, epidermal cells showed oblique divisions, which distinguish S. stellatus, S. treleasei and S. zopilotensis by their abundance. The occurrence of silica bodies in the epidermal and hypodermal cells characterizes the genus. The profusion of the mucilage cells is a character shared by the Stenocereus species with its sister taxon. In addition, the distribution of the mucilage cells in the cortex allowed recognizing two groups of species. Phelloderm development and the presence of multiple perforation plates in the secondary xylem were characters described for the first time for the genus. Abundance mucilage cells and silica bodies allow distinguishing Stenocereus species from other members of the family.
Anatomía caulinar de las especies del género Stenocereus (Cactaceae)
TERRAZAS,Teresa; LOZA-CORNEJO,Sofía; ARREOLA-NAVA,Hilda J;
Acta Botánica Venezuelica , 2005,
Abstract: stenocereus stem anatomy was described and compared with other cactoideae. stenocereus had a smooth and thin cuticle, epidermal cells showed oblique divisions, which distinguish s. stellatus, s. treleasei and s. zopilotensis by their abundance. the occurrence of silica bodies in the epidermal and hypodermal cells characterizes the genus. the profusion of the mucilage cells is a character shared by the stenocereus species with its sister taxon. in addition, the distribution of the mucilage cells in the cortex allowed recognizing two groups of species. phelloderm development and the presence of multiple perforation plates in the secondary xylem were characters described for the first time for the genus. abundance mucilage cells and silica bodies allow distinguishing stenocereus species from other members of the family.
Especies de Stenocereus con aréolas morenas: clave y descripciones  [cached]
Hilda J. Arreola Nava,Teresa Terrazas
Acta botánica mexicana , 2003,
Abstract: Se presenta una clave y las descripciones de las especies de Stenocereus que conforman el grupo con aréolas morenas, basadas en la revisión de ejemplares de herbario, observaciones en el campo y colecta intensiva. De acuerdo con este trabajo, son siete las especies de Stenocereus con aréolas morenas y se distinguen de los otros representantes conocidos del género por sus tricomas glandulares que le confieren el color obscuro a todas sus aréolas y porque su distribución se centra en el occidente de México.
Nuevos avances en las prospecciones arqueológicas en la Quebrada de los Cardones
Rivolta,Gustavo M.;
Cuadernos de la Facultad de Humanidades y Ciencias Sociales. Universidad Nacional de Jujuy , 2005,
Abstract: in this paper to be inform over the result of archaeology prospections realizated at the "los cardones" ravine, located in the east of yocavil valley, in the tucuman province. to be prospections sites belonging at the stage of the regional developments. was effect surveys architectonics and planoaltimetric of the totality structures of one site the residential use, called los cardones, to be find summoned in the slopes and top of one hill, located in the left bank of amaicha river. were prospections the extensive cones footmountains until the low sectors near in the right bank of amaicha river, and to be documentated the structures, agricultural basicament, that ocupated different places on landscape. the abundant information collected permit to infer the articulation and organization the spase in the ravine, elaborated hypothesis over the differential utilization the distintc bounds in the zone of study. the model proposals classify the tipes of the structures, yours functionality possibles, the characteristic of the lanscape in that to be encounter seateds and your relations with the resources.
Vulnerabilidad de la avifauna en el Parque Nacional Los Cardones, Salta, Argentina
Acreche,N.; Nú?ez,H.A.; Albeza,M.V.;
Revista de Biología Tropical , 1998,
Abstract: avian vulnerability was studied in three habitats of the national park los cardones (salta, argentina): valle encantado, valle tin tin and laguna cachipampa. these habitats differ in plant abundance and composition, altitude and climate. vulnerability of avian species was estimated taking into account an index built considering geographic distribution, abundance and habitat specificity. it varies between a maximal of one and a minimal of eight. 40 % of species have the higher vulnerability index (restricted geographic distribution, restricted habitat specificity and low abundance).
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