Yucatan

Henequen. Agavefourcroydes grows ia Mexico where it was first cultivated by the Mayans ia the Yucatan (Yucatan Sisal). The plant produces for 20—30 years. The lower bottom leaves, which are up to 2 m long and 10—15 cm wide, are cut, machine decorticated, and cleaned. Henequen fibers are white to yellowish red and are inferior to sisal ia strength, cleanliness, texture, and length, the other grading criteria. Henequen is grown for local use ia Cuba (Cuban Sisal) and El Salvador. Twiae, small ropes, coarse mgs, and sacks are made commercially from henequen. 

Sisal. The tme sisal fiber Fora Agave sisalana is the most important of the leaf fibers ia terms of quahty and commercial use. Originating ia the tropical western hemisphere, sisal has beea transplanted to East Africa, Indonesia, and the Philippines. It is named after the port ia the Yucatan from which it was first exported. 

Oil Spills. Oil spills occur from oil pipeline leaks, oil tanker accidents, or submarine oil drilling operations. The two major ocean drilling accidents—oil wells blowing out—were the 1969 Santa Barbara Channel spill and the 1979 Yucatan Peninsula spill, in Mexico. The Yucatan spill spewed out more than three million barrels before being capped in 1980. Both caused damage to beaches and marine life, but the smaller Santa Barbara spill was far more devastating because of unfavorable winds following the accident. 

An "amazing amount of trash", mostly plastic objects, is stranded on the Atlantic coast of Florida during onshore winds, particularly in winter (55). While some of this debris was of United States origin (from local sources or from entrainment in the Florida Current of wastes from shipping), the remainder was of Venezuelan, Columbian, and Jamaican origin. Debris from the easternmost Caribbean and the northern coast of South America could be transported to the Atlantic coast of Florida by the Guiana and Antilles Currents in about four months. Alternatively, debris from the southern or southwestern part of the Caribbean could be carried by the Caribbean Current via the Yucatan Channel and Straits of Florida to the Atlantic coast of Florida in as little as two months. 

Cretaceous 138 Myr Gondwana begins to break up. Continued radiation of flowering plants mammals begin diversifying. Meteorite strikes Yucatan Peninsula at end of period causing mass extinction (ca. 75% of all species disappear)... 

Tozzer, A.M., ed. 1941 Landa s Relacion de las Cosas de Yucatan. Papers of the Peabody Museum of Archaeology and Ethnology, Harvard University 18, Cambridge, MA. 

In Yucatan minipigs dermally exposed for 6 hours to 350 mg/kg, [14C]tributyl phosphate was only poorly absorbed (less than 5% of the applied dose). Absorption in rats treated under similar conditions was much higher (54-58%) (Gatz 1992a, 1992b). 

Gatz. 1992a. Intravenous and dermal absorption, distribution, and excretion of 14C-tributyl phosphate in Yucatan minipigs Part I. MRI Project No. 9526-F(02). 

Caribbean flamingo, Phoenicopterus ruber ruber, Yucatan, Mexico 1989 died of lead poisoning liver Sora rail, Porzana Carolina 313 DW 154, 193... 

Aguirre-Alvarez, A.A. 1989. Clinical and toxicological findings in Caribbean flamingos (Phoenicopterus ruber ruber) during a recent outbreak of lead poisoning in Yucatan, Mexico. Proc. 1989 Ann. Meet. Amer. Assoc. Tjoo Veterin., Greensboro, NC, 14-19 Oct 1989 209-212. 

Schmitz, R.A., A.A. Aguirre, R.S. Cook, and G.A. Baldassarre. 1990. Lead poisoning in Caribbean flamingos in Yucatan, Mexico. Wildl. Soc. Bull. 18 399-404. 

C. L. de Korte, M. J. Sierevogel, F. Mastik, C. Strijder, J. A. Schaar, E. Velema, G. Pasterkamp, P. W. Serruys and A. F. van der Steen, Identification of atherosclerotic plaque components with intravascular ultrasound elastography in vivo a Yucatan pig study, Circulation, 2002, 105, 1627—1630. 

Minnesota minipig introduced in 1949 Body weights at age 2 years Yucatan minipig 70-90 kg Yucatan micropig 40 15 kg Gottinger micropig 35-40 kg... 

Clinical Laboratory. Clinical chemical and hematological parameters for minipigs have been studied. Ranges for some of the more commonly examined parameters from Yucatan minipigs are summarized in Tables 16.9 and 16.10 (from Radin, Weiser and Frettman, 1986). Parson and Wells (1986) have published similar data on the Yucatan minipig. Brechbuler, Kaeslin and Wyler (1984), Oldigs (1986),... 

Sambuco (1985) has described the sunburn response of the Yucatan minipig to ultraviolet (UV) light, suggesting that this species would also make a good model in phototoxicity as well as photocontact dermatitis studies. Thirty 12-cm sites were demarcated, permitting the study of 15 different dermal dosages of UV radiation. 

Parsons, A. and Wells, R. (1986). Serum biochemistry of healthy Yucatan miniature pigs. Lab. Animal Sci. 36 428 130. 

Radin, M., Weiser, M. and Frettman, M. (1986). Flematologic and serum biochemical values for Yucatan miniature swine. Lab Anim. Sci. 36 425 127. 

The workshop was co-chaired by Dr. Luis Marin, Professor of Geology at the Universidad Nacional Autonoma de Mexico (UNAM— National Autonomous University of Mexico) and Dr. Henry Vaux, Professor of Resource Economics and Associate Vice President Emeritus of the University of California, Berkeley. The workshop addressed science-based decision making in a regional (Yucatan peninsula) and topical (sustainable ground water management) context. 

Schultz IG, Shepard AO, Blackmon PD, Starkey HC (1971) Mixed layer kaoUnite-montmoriUon-ite from the Yucatan Peninsula, Mexico Clays Clay Miner 19 137-150 Shternina EB (1960) Solubility of gypsum in aqueous solutions of salts. Intern Geol Rev 1 pp 605-616... 

Three new dolabellanes (24-26) were isolated from the wood of Trichilia trifolia (family Meliaceae, mahogany family ) collected in Yucatan, Mexico... 

Results of outdoor and indoor corrosion rate and corrosion aggressivity in tropical corrosion test stations of Cuba and Mexico are reported. The results mainly concern to natural atmospheric corrosion tests obtained in the western side of the Isle of Cuba and in the Campeche State located at the Yucatan Peninsula in Mexico. The two regions are located in the tropical climate and receive the influences of the waters of the Atlantic Ocean and the Mexican Gulf. Data processed in this paper correspond to atmospheric corrosion tests carried out during a long period of time, about the last 20 years in Cuba and the last 10 years at Campeche up to the present. 

The humid tropical climate of Cuba and the Yucatan Peninsula (Mexico) is characterized by an average air temperature always higher than 15°C, frequently high relative humidity, a summer or wet season (may to October) with frequent and heavy precipitations and a winter of dry season (november to april) with lower precipitations. 

In the case of these two regions there is a natural source of airborne salinity the waters of the Atlantic Ocean, the Gulf of Mexico and the Caribbean Sea. Airborne salinity plays an important role in determining corrosion aggressivity in Cuba [1-4] and in the Yucatan Peninsula [2, 5-6], Other anthropogenic contaminants can be present also in this region, particularly sulfur compounds coming from the oil production and manufacture industries and... 

Air temperature in the Yucatan Peninsula reaches higher values than in Cuba, the top average air temperature in Cuba is 26°C in the eastern shoreline [7], In the Yucatan Peninsula part of the territoiy can be classified as Tropical very warm with an average temperature over 26°C [8], Absolute maximum temperature in Cuba is of 38,6°C, meanwhile a temperature over 40°C is frequently reported in sites of the Yucatan Peninsula, particularly in Campeche. 

About % of the Cuban territoiy is composed by mountains and the rest is mainly terrain flatness. The Yucatan Peninsula has no mountains. The lower temperatures and higher precipitations rates in Cuba are localized in the mountain regions. Orography is a transformation factor of local wind regime. 

Figure 10. Annual average of deposition rate of Chlorides for different sites of the Yucatan Peninsula Puerto Progreso and Puerto Morelos (Yucatan and Quintana Roo States), Campeche and Veracruz States.

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