Comparación de las macroalgas epizóicas de la madreperla Pinctada mazatlanica (Hanley 1856) con las de fondos rocosos en la bahía de La Paz, Baja California Sur, México

El presente estudio describe la comunidad de macroalgas epizóicas de Pinctada mazatlanica y la compara con la del substrato rocoso. Colectamos un total de 36 muestras de la comunidad de macroalgas, 18 muestras sobre ostras y otras tantas sobre substrato rocoso en la Península San Juan Nepomuceno, bahía de La Paz, México. Las algas fueron colectadas mediante buceo SCUBA raspando las distintas superficies (25 cm2 de substrato rocoso). El tamaño de muestra fue ajustado por curva de acumulación de especies y expresado con un modelo polinomial. Comparamos las comunidades de algas con análisis multivariantes de similitud basados en el índice de Bray-Curtis, entre substratos, diferentes alturas de ostras perleras y profundidades. Encontramos 27 especies de algas epizóicas (15.4% Clorophyta, 3.8% Phaeophyta y 80.8% Rhodophyta) con una disimilitud de 71.16% con respecto al substrato rocoso. El dendrograma mostró tres agrupaciones de macroalgas en P. mazatlanica. El primero caracterizado por Chondria, Jania, Herposiphonia tenella y Gracilaria. El segundo compuesto por Jania, Polysiphonia acuminata, P. decusata y Spyridia filamentosa. El tercero constituido por Polysiphonia sp., Jania, Herposiphonia tenella, Ceramium canouii y Amphiroa sp. Estas agrupaciones y los talos filamentosos de las algas epizóicas corresponden a estados iniciales de sucesión.

Acusacion presentada ante el Tribunal Superior del Distrito Norte de la Baja California contra el licenciado Juan Prieto y Quemper por los licenciados Juan R. Orcí, Manuel Piña y Cuevas y Miguel Bolaños Cacho.

Mode of access: Internet.

Código penal para el Distrito Federal y Territorio de la Baja-California sobre delitos del fuero común y para toda la República Mexicana sobre delitos contra la Federación.

Mode of access: Internet.

Territorio de la Baja California : resena geografica y estadistica /

Mode of access: Internet.

Arachnida from Baja California and other parts of Mexico.

"Issued May 28, 1898."

Historia de la antigua o baja California /

Relación histórica de la vida del venerable padre Fray Junipero Serra / [Francisco Palou] (p. 125-252)

Proceedings/actas, first Symposium on the Cerro Prieto Geothermal Field, Baja California, Mexico, September 20-22, 1978, San Diego, California /

Mode of access: Internet.

Manual teórico y verdadero práctico para la sustanciación y tramitación de los procedimientos civiles : con arreglo a la ley de enjuiciamiento civil vigente /

Mode of access: Internet.

Formularios de los procedimientos civiles, con arreglo a la Ley de Enjuiciamiento vigente /

Mode of access: Internet.

The mother of California, being an historical sketch of the little known land of Baja California, from the days of Cortez to the present time, depicting the ancient missions therein established, the mines there found, and the physical, social and political aspects of the country; together with an extensive bibliography relative to the same,

Bibliography: p. 163-169.

Monitoring green turtles (Chelonia mydas) at a coastal foraging area in Baja California, Mexico: multiple indices to describe population status

From June 1995 to August 2002 we assessed green turtle (Chelonia mydas) population structure and survival, and identified human impact, at Bahia de los Angeles, a large bay that was once the site of the greatest sea turtle harvest rates in the Gulf of California, Mexico. Turtles were captured live with entanglement nets and mortality was quantified through stranding surveys and flipper tag recoveries. A total of 14,820 netting hours (617.5 d) resulted in 255 captures of 200 green turtles. Straight-carapace length and mass ranged from 46.0-100.0 cm (mean = 74.3 +/- 0.7 cm) and 14.5-145.0 kg (mean = 61.5 +/- 1.7 kg), respectively. The size-frequency distribution remained stable during all years and among all capture locations. Anthropogenic-derived injuries ranging from missing flippers to boat propeller scars were present in 4% of captured turtles. Remains of 18 turtles were found at dumpsites, nine stranded turtles were encountered in the study area, and flipper tags from seven turtles were recovered. Survival was estimated at 0.58 for juveniles and 0.97 for adults using a joint live-recapture and dead-recovery model (Burnham model). Low survival among juveniles, declining annual catch per unit effort, and the presence of butchered carcasses indicated human activities continue to impact green turtles at this foraging area.

(Table 2) Radiocarbon ages of selected southern Baja California sediment cores

Piston, gravity, and multicores as well as hydrographic data were collected along the Pacific margin of Baja California to reconstruct past variations in the intensity of the oxygen-minimum zone (OMZ). Gravity cores collected from within the OMZ north of 24°N did not contain laminated surface sediments even though bottom water oxygen (BWO) concentrations were close to 5 µmol/kg. However, many of the cores collected south of 24°N did contain millimeter- to centimeter-scale, brown to black laminations in Holocene and older sediments but not in sediments deposited during the Last Glacial Maximum. In addition to the dark laminations, Holocene sediments in Soledad Basin, silled at 290 m, also contain white coccolith laminae that probably represent individual blooms. Two open margin cores from 430 and 700 m depth that were selected for detailed radiocarbon dating show distinct transitions from bioturbated glacial sediment to laminated Holocene sediment occurring at 12.9 and 11.5 ka, respectively. The transition is delayed and more gradual (11.3-10.0 ka) in another dated core from Soledad Basin. The observations indicate that bottom-water oxygen concentrations dropped below a threshold for the preservation of laminations at different times or that a synchronous hydrographic change left an asynchronous sedimentary imprint due to local factors. With the caveat that laminated sections should therefore not be correlated without independent age control, the pattern of older sequences of laminations along the North American western margin reported by this and previous studies suggests that multiple patterns of regional productivity and ventilation prevailed over the past 60 kyr.

El impacto turístico en el noroeste de México y el sur de California, Estados Unidos : hacia un modelo territorial de turismo sostenible en el litoral rosaritense, Baja California, México

Programa de doctorado: Turismo y Desarrollo Sostenible. La fecha de publicación es la fecha de lectura

[Reformas al código de procedimientos civiles vigentes]

Contenido : Reformas al código de procedimientos civiles vigentes (edición de 1904) -- Reformas al código de comercio vigente (edición de 1904.) – Ley sobre bancos de emisión – Reformas al código penal (edición de 1904) – Reformas al código de instrucción criminal (edición de 1904.) – Ley sobre la penitenciaria – Ley de papel sellado y timbres – Ley que grava la sucesión por causa de muerte – Ley de ingenieros topógrafos – Decreto que establece que el periodo de las municipalidades que se elegirán por dos años principiara el primero de enero del año próximo de 1915