摘要：Las algas marinas participan en los equilibrios físico-químicos, el ciclo del carbono y sustentan tramas alimenticias de ambientes costeros. A pesar de su importancia los estudios realizados de este grupo de organismos en Yucatán son escasos. El objetivo de este trabajo es contribuir al conocimiento de la biodiversidad de algas marinas en la zona costera de Yucatán, comprendida entre Uaymitún y Chuburná, con la finalidad de fundamentar estudios de ingeniería ambiental. Se hicieron recorridos en la zona intermareal hasta encontrar fondos rocosos. Los muestreos se hicieron en Chelém, Uaymitún, Chuburná y Progreso colectando algas de piedras, concreto, madera, conchas, otras algas, briozoos, tubícolas, esponjas, arena, y algas a la deriva. La identificación se hizo con caracteres morfológicos macroscópicos y microscópicos. Se analizaron las asociaciones de algas por sitios, especies y sustratos mediante análisis de conglomerados, para tal efecto se utilizó el coeficiente de Jaccard. Se determinaron 46 taxas de algas marinas bentónicas en 29 géneros y 19 familias; Rhodomelaceae presentó la mayor riqueza de especies. El análisis de conglomerados indica que las asociaciones de algas marinas en madera y concreto son muy similares; las que crecen en caracol y piedra forman un segundo grupo; las algas a la deriva, asociadas a briozoos, a poliquetos y a otras algas marinas forman un tercer grupo y las algas en esponjas y sobre arena no se asocian. La biodiversidad de algas tiene un comportamiento dinámico relacionado a condiciones de lugar y ciclos temporales. Los sustratos definen agrupaciones y las condiciones oceanográficas otras agrupaciones de deriva.
其他摘要：Marine algae participate in the physical chemical balance and the carbon cycle; they also sustain trofic nets of coastal environments. In spite of its importance, studies on the marine algae from the Yucatan coast are limited. The objective of this work is to contribute to the knowledge of marine algae biodiversity in the Uaymitun to Chuburna coastal zone from Yucatan, México, in order to help environmental engineering studies. Searches were made on the intertidal zone until the rock-bottom depth was found. The transects were made in Chelem, Uaymitun, Chuburna and Progreso, Yucatan, collecting algae from stones, concrete, construction woods, snail shells, other algae, bryozoa, calcareous tube worms, sponges, sand, and non-fixed algae. The samples were collected and identified to the species level. Macroscopic and microscopic morphologic characters were used for identification. Algae associations were made of the sampling sites, between the species and substrate where they were found through Cluster analysis using Jaccards coefficient. 46 taxa of bentonic algae were determinate: 29 genera and 19 families, Rhodomelaceae was the group with major specific richness. Cluster analysis indicates that the associations of marine algae from wood and concrete are very similar forming a second group; the non-fixed algae associate with bryozoa, calcareous tube worms and other marine algae form a third group and the algae in sponges, snail shells and sand are not associated. Algal biodiversity in the Yucatan coast has a dynamical behavior that it is determined by location conditions and temporal cycles. Substrate induces clusters and there exist non-fixed algal groups determined by oceanographic conditions.
关键词：Biodiversity; algae and YucatanBiodiversidad; algas; Yucatán
