scholarly journals A coastal population of Large-blotched Ensatina Ensatina klauberi (Caudata: Plethodontidae) in Baja California, México

Check List ◽  
2015 ◽  
Vol 11 (3) ◽  
pp. 1649 ◽  
Author(s):  
Jorge Heriberto Valdez-Villavicencio ◽  
Anny Peralta-Garcia ◽  
Bradford Damion Hollingsworth
Keyword(s):  
Baja California ◽  
Volcanic Field ◽  
Species Range ◽  
Oak Woodlands ◽  
Coastal Population ◽  
San Pedro ◽  
Sierra San Pedro Martir

We found a new population of Ensatina klauberi in San Quintín volcanic field, Baja California. It represents the first coastal population of this species. This record extends the species range ca. 71 km southwest of the southernmost record of E. klauberi in the Sierra San Pedro Mártir and represents the first population discovered outside of coniferous and pine-oak woodlands.

Vegetation history along the eastern, desert escarpment of the Sierra San Pedro Mártir, Baja California, Mexico

2011 ◽  
Vol 75 (3) ◽  
pp. 647-657 ◽  
Author(s):  
Camille A. Holmgren ◽  
Julio L. Betancourt ◽  
Kate A. Rylander
Keyword(s):  
Lake Sediments ◽  
Marine Sediments ◽  
Baja California ◽  
Vegetation History ◽  
Summer Rainfall ◽  
Plant Macrofossils ◽  
Eastern Desert ◽  
Pollen Stratigraphy ◽  
San Pedro ◽  
Sierra San Pedro Martir

AbstractPlant macrofossils from 38 packrat middens spanning the last ~ 33,000 cal yr BP record vegetation between ~ 650 and 900 m elevation along the eastern escarpment of the Sierra San Pedro Mártir, northern Baja California. The middens span most of the Holocene, with a gap between ~ 4600 and 1800 cal yr BP, but coverage in the Pleistocene is uneven with a larger hiatus between 23,100 and 14,400 cal yr BP. The midden flora is relatively stable from the Pleistocene to Holocene. Exceptions include Pinus californiarum, Juniperus californica and other chaparral elements that were most abundant > 23,100 cal yr BP and declined after 14,400 cal yr BP. Despite being near the chaparral/woodland-desertscrub ecotone during glacial times, the midden assemblages reflect none of the climatic reversals evident in the glacial or marine record, and this is corroborated by a nearby semi-continuous pollen stratigraphy from lake sediments. Regular appearance of C4 grasses and summer-flowering annuals since 13,600 cal yr BP indicates occurrence of summer rainfall equivalent to modern (JAS average of ~ 80–90 mm). This casts doubt on the claim, based on temperature proxies from marine sediments in the Guaymas Basin, that monsoonal development in the northern Gulf and Arizona was delayed until after 6200 cal yr BP.

scholarly journals Sierra San Pedro Mártir, Baja California, cool-season precipitation reconstructed from earlywood width ofAbies concolortree rings

2013 ◽  
Vol 118 (4) ◽  
pp. 1660-1673 ◽  
Author(s):  
D. M. Meko ◽  
R. Touchan ◽  
J. Villanueva Díaz ◽  
D. Griffin ◽  
C. A. Woodhouse ◽  
...  
Keyword(s):  
Baja California ◽  
Cool Season ◽  
San Pedro ◽  
Earlywood Width ◽  
Sierra San Pedro Martir

The Sierra San Pedro Mártir zoned pluton, Baja California, Mexico

2014 ◽  
Author(s):  
R. Gordon Gastil ◽  
David L. Kimbrough ◽  
Joan M. Kimbrough ◽  
Marty Grove ◽  
Masaaki Shimizu
Keyword(s):  
Baja California ◽  
San Pedro ◽  
Sierra San Pedro Martir

Uplift of the Sierra San Pedro Mártir Baja California, Mexico

Tectonics ◽  
1989 ◽  
Vol 8 (4) ◽  
pp. 833-844 ◽  
Author(s):  
James E. O'Connor ◽  
Clement G. Chase
Keyword(s):  
Baja California ◽  
San Pedro ◽  
Sierra San Pedro Martir

scholarly journals Parásitos y enfermedades del venado bura (Odocoileus hemionus fuliginatus) en la parte norte de la sierra San Pedro Mártir, Baja California, México.

2007 ◽  
Vol 11 (1) ◽  
pp. 8 ◽  
Author(s):  
Joaquín Contreras ◽  
Eric Mellink ◽  
R. Martínez ◽  
G. Medina
Keyword(s):  
Baja California ◽  
Ixodes Scapularis ◽  
Mule Deer ◽  
Rhipicephalus Sanguineus ◽  
Dermacentor Variabilis ◽  
Hypoderma Lineatum ◽  
San Pedro ◽  
Dermacentor Albipictus ◽  
Sierra San Pedro Martir ◽  
Linognathus Vituli

Resumen: Durante los años 2001, 2002 y 2003 colectamos muestras de ectoparásitos, tejido sanguíneo y excretas de venados cobrados por cazadores en el norte de la sierra San Pedro Mártir, Baja California. Se colectaron ectoparásitos de 15 venados, lográndose identificar a Ixodes scapularis, Rhipicephalus sanguineus, Dermacentor occidentalis, Dermacentor variabilis, Dermacentor albipictus, Lipoptena sp, Hypoderma lineatum, Linognathus vituli y una larva de especie no identificada de la familia Oestridae. No se detectaron evidencias de nemátodos endoparásitos. Se analizaron los sueros de 12 venados para detectar anticuerpos contra el virus de la enfermedad de lengua azul, anaplasmosis y brucelosis registrando seropositividad a las dos primeras, pero no a brucelosis.Palabras clave: Venado bura, parásitos, enfermedades, enfermedad de lengua azul, anaplasmosis, brucelosis.Abstract: We collected samples of ectoparasites, blood, and feces of mule deer killed by sport hunters in the northern part of the Sierra San Pedro Mártir, Baja California from 2001 to 2003. We identified ectoparasites on 15 deer, which had 9 species of parasitic arthropods: Ixodes scapularis, Rhipicephalus sanguineus, Dermacentor occidentalis, Dermacentor variabilis, Dermacentor albipictus, Lipoptena sp, Hypoderma lineatum, Linognathus vituli, and one Oestridae larvae of unidentified species. We did not find any endoparasites. We analyzed blood serum from 12 deer to detect blue tongue disease, anaplasmosis, and brucellosis, and we found seropositivity to the two first diseases, but not to brucellosis. Key words: Mule deer, extoparasites, disease, blue tongue disease, anaplasmosis, brucellosis

scholarly journals Primer registro de bajapalos pecho canela (Sitta canadensis) en el bosque de Los Attenuatas, Baja California

2017 ◽  
Vol 18 (1) ◽  
Author(s):  
Mariana Delgado-Fernández
Keyword(s):  
Baja California ◽  
Nuevo Leon ◽  
San Pedro ◽  
Nuevo León ◽  
Sierra San Pedro Martir

El bajapalos pecho canela (Sitta canadensis) es una especie de distribución amplia en Estados Unidos y Canadá. No obstante,debido a irrupciones y vagabundeos, se ha registrado en Chihuahua, Sonora, Sinaloa, Baja California, Nuevo León y en el occidentede México (Jalisco y Colima). En Baja California existen cuatro registros: (1) Isla Guadalupe (población que se consideraextirpada desde 1995) (2), Sierra San Pedro Mártir (3), Sierra Juárez y (4) Santa Rosaliíta, los últimos dos registros son de hacemás de 20 años. Registramos por primera vez un bajapalos pecho canela macho adulto en el bosque de Los Attenuatas durantela temporada de invierno de 2015.

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