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|Title:||Zonobiomes, zonoecotones and azonal vegetation along the Pacific coast of North America|
Rafael Guzman, M.
|Abstract:||A perennial teosinte or "wild maize" endemic to the Cerro de San Miguel, Sierra de Manantlan, Jalisco, Mexico differs from Zea perennis by dimorphic rhizomes, robust habit, and a larger number of longer, laxer tassel branches. The fact that it is a diploid (2n = 20) has taxonomic and agronomic significance. The seeds are used locally for food. Copyright " 1979 AAAS.",,,,,,,,,"http://hdl.handle.net/20.500.12104/45774","http://www.scopus.com/inward/record.url?eid=2-s2.0-0001490237&partnerID=40&md5=bd97326e1633e6b1785f0e6ce4b36164",,,,,,"4376",,"Science",,"186|
188",,"203",,"Scopus",,,,,,,,,,,,"Zea diploperennis (gramineae): A new teosinte from Mexico",,"Article" "47562","123456789/35008",,"Sandoval, L., Division de Genetica, Centro de Invest. Biomed./Occidente, CMNO, IMSS, Apartado Postal 1-3838, Guadalajara, Jalisco, Mexico 44310, Mexico; Diaz, M., Division de Genetica, Centro de Invest. Biomed./Occidente, CMNO, IMSS, Apartado Postal 1-3838, Guadalajara, Jalisco, Mexico 44310, Mexico; Rivas, F., Division de Genetica, Centro de Invest. Biomed./Occidente, CMNO, IMSS, Apartado Postal 1-3838, Guadalajara, Jalisco, Mexico 44310, Mexico",,"Sandoval, L.
Rivas, F.",,"1995",,"Among azoospermics, the activity of seminal ?-glucosidase (?G) is low in obstruction (OBS) cases, but there is no agreement regarding its value in others. With the hypothesis that a more marked decrease in ?G activity occurs in OBS than in spermatogenesis arrest (SA), the enzyme was measured in the following groups: (1) vasectomized males (n = 15), (2) azoospermics with OBS (n = 7), (3) azoospermics with SA (n = 11), and (4) fertile males (n = 15). Patients within groups 2 and 3 had a testicular volume ?15 mL, no clinical evidence of abnormal epididymis, normal serum gonadotropins, and histological diagnosis. G activities (mU/g protein, means +/- SD) by group were (l) 131 ± 60, (2) 312 ± 186, (3) 728 ± 303, and (4) 1176 ± 374. All between-group differences were significant (t test, p < .01), except for groups 1 vs. 2 comparison (.05 > p > .01). These results support the notion that SA is associated with a decrease in ?G that is less marked than that seen in OBS. The search for germinal epithelium cells in semen also allows discrimination between these two azoospermic groups.",,,,,,,,,"http://hdl.handle.net/20.500.12104/45783","http://www.scopus.com/inward/record.url?eid=2-s2.0-0028789801&partnerID=40&md5=6c4475c09e9b16a88e5acaecd43936ec",,,,,,"2",,"Archives of Andrology",,"155
158",,"35",,"Scopus",,,,,,"?-glucosidase; azoospermic; diagnosis; male infertility; meiosis; semen analysis",,,,,,"?-1,4-glucosidase activity and the presence of germinal epithelium cells in the semen for differential diagnosis of obstructive and nonobstructive azoospermia",,"Article" "47557","123456789/35008",,"Peinado, M., Departamento de Biología Vegetal, Universidad de Alcalá, Madrid 28871, Spain; Aguirre, J.L., Cátedra de Medio Ambiente, Universidad de Alcalá, Madrid 28871, Spain; Delgadillo, J., Herbario BCMEX, Universidad Autónoma de Baja California, Ensenada, BC, Mexico; Macías, M. ., Departamento de Ciencias Ambientales, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico",,"Peinado, M.
Macias, M.A.",,"2007",,"In this study of the Pacific coast of North America, from Baja California to Alaska, we evaluated the hypothesis that the floristic composition of azonal vegetation determines areas and distribution limits similar to those of the corresponding zonobiomes (ZB), and does so in response to the same macroclimatic changes occurring on the continental scale. To this end, 686 vascular plants of the different habitats found in 279 sites along this coastal strip were recorded. Using an objective classification system (Average Linkage Clustering) and factorial analysis, floristic data acquired in fieldwork were classified into groups, which were in turn related to regional macroclimates. Our main finding was that the azonal coastal vegetation follows a distribution model that is closely linked to the corresponding macroclimate. The four ZB of the northern Pacific coast show a flora and azonal vegetation characteristic to each zonobiome; the latitudinal limits of the azonal vegetation practically coinciding with those already established for the zonal vegetation. The Boreal and Temperate ZB show high percentages of broadly distributed elements. The floristically richest zonobiome in terms of endemic taxa is the Mediterranean zonobiome, whereas the flora of Baja California is characterized by a high number of taxa related to Neotropical flora, especially to those showing links with South America. Data on the geographical distribution and habitats of the 247 most significant coastal species are also provided. " 2007 Springer Science+Business Media, Inc.
|Appears in Collections:||Producción científica UdeG|
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