Biostratigraphy and petrography of upper Paleozoic rocks of Sierra Las Pintas, northern Baja California
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چکیده
منابع مشابه
Climatic and structural comparison of yellow pine and mixed-conifer forests in northern Baja California (México) and the eastern Sierra Nevada (California, USA)
Effects of fire suppression policies on semi-arid yellow pine and mixed conifer (YPMC) forests in the western US have been well documented, and restoration of forest structure and natural fire regimes are high management priorities to ensure the health and resilience of such forests. However, determining reference conditions for ecological restoration is difficult due to the near absence of und...
متن کاملSpatial and Temporal Examination of Bivalve Communities in Several Estuaries of Southern California and Northern Baja California, MX
A combination of historical bivalve surveys spanning 30-50 years and contemporary sampling were used to document the changes in bivalve community structure over time at four southern California and one northern Baja California estuaries. While there are limitations to the interpretation of historic data, we observed generally similar trends of reduced total bivalve species richness, losses of r...
متن کاملCorrection: Spatial and Temporal Examination of Bivalve Communities in Several Estuaries of Southern California and Northern Baja California, MX.
There are errors in the Funding section and Acknowledgements section. The complete, correct Funding statement is as follows: No external funding was received for this study. Some resources (supplies and research assistance) were donated by T.S. Talley through California Sea Grant Project A/EA-AR-37, Ocean Discovery Institute, and D.M. Talley and N. Reyns through Environmental and Ocean Sciences...
متن کاملAdditional Atmospheric Opacity Measurements at Millimeter Wavelengths from San Pedro M Artir Sierra in Baja California
Measurements of the atmospheric zenith opacity at a wavelength of 1.4 mm (210 GHz) carried out at the Observatorio Astronómico Nacional in the Sierra San Pedro Mártir, Baja California, México are presented. The data cover 251 days in 1999. Measurements were made on a continuous basis every eight minutes using a heterodyne radiometer. For this period, the total mean zenith opacity was 0.13 neper...
متن کاملCalifornia sea lions (Zalophus californianus californianus) have lower chlorinated hydrocarbon contents in northern Baja California, México, than in California, USA.
Chlorinated hydrocarbons (CHs) were determined in blubber samples of 18 California sea lions (Zalophus californianus californianus) that stranded dead along Todos Santos Bay, Ensenada, Baja California, México, January 2000-November 2001. Summation operatorDDTs were the dominant group (geometric mean 3.8 microg/g lipid weight), followed by polychlorinated biphenyls ( summation operatorPCBs, 2.96...
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ژورنال
عنوان ژورنال: Journal of South American Earth Sciences
سال: 2018
ISSN: 0895-9811
DOI: 10.1016/j.jsames.2018.03.010