Fitoplancton del río Tehuantepec, Oaxaca, México y algunas relaciones biogeográficas

Abstract

Phytoplankton from Tehuantepec River, Oaxaca, Mexico and some biogeographical relationships. Phytoplankton species collected from the limnetic to euryhaline sections of Tehuantepec River were identified, classified and compared with regional information from Mexico and South America. We collected 15 samples every three months from July 1997 through August 1998 with a 20 µm net and a van Dorn bottle. Indicator values and a code checklist are included. A total of 58 families, 121 genera, 273 species, one subspecies, 75 varieties, 13 forms and one morphotype were identified in the taxa Bacillariophyta (42.0 %), Chlorophyta (29.0 %), Cyanoprocaryota (18.0 %), Euglenophyta (5.0 %), Dinophyta (3.0 %), Cryptophyta (2.0 %) and Chrysophyta (1.0 %). The predominant families were Scenedesmaceae (24 species), Oocystaceae (22), Bacillariophyceae (21), Chaetocerotaceae (15) and Euglenaceae (14). Five families, eight genera, 72 species, 45 varieties and eight forms are first records for Mexico. The species Chroococcus turgidus, Microcystis flosaquae and Pseudanabaena limnetica (which produce massive blooms or red tides) are important in this river of moderate water quality.

Phylogenetic position of a rare loricated green alga, Cephalomonas granulata N. L. Higinb. (Volvocales, Chlorophyceae)

“…Other than the original description, this species was recorded from the USA (Lackey 1958; Lackey & Lackey 1967; Hindák 1976), Slovakia (Hindák 1976), India (Iyengar & Desikachary 1981; Vani Manohar & Patel 1986), Ukraine (Demchenko 2005) and Mexico (Moreno‐Ruiz et al. 2008), and the vegetative morphology was similar to that of the present Japanese strain, except for the materials without detailed description (Lackey 1958; Lackey & Lackey 1967; Moreno‐Ruiz et al. 2008).…”

Biodiversidad del fitoplancton de aguas continentales en México

“…Las obras de revisión que incluyen algas fitoplanctónicas de México son: Ortega (1984), Tavera y Komárek (1996), Tavera et al (2000), Moreno (2005), Novelo et al (2007), Garduño et al (2009) y Novelo (2011Novelo ( , 2012.…”

Flora planctónica de laguna Lagartos, Quintana Roo Roo

“…1), Compère (1974, p. 167) y Whitton (2002, p. 40). Se cita para Oaxaca, región central de México y para Yucatán (Montejano et al, 2005;Moreno et al, 2008;Lopéz-Adrián y Catzim-Cruz, 2010). Chroococcus minutus (Kützing) Nägeli (Fig.…”

“…f) y Tucci et al (2006. Se cita para Baja California, Oaxaca, Puebla, región central de México y Yucatán (Ortega, 1984;Komárek y Novelo, 1994;Ortega et al, 1994;López-Cortés et al, 2001;Montejano et al, 2005;Moreno et al, 2008;Lopéz-Adrián y Catzim-Cruz, 2010). Chroococcus pulcherrimus Welsh (Fig.…”

“…Además, C. pulcherrimus mostró una vaina no lamelada y contenido celular finamente granulado. Chroococcus turgidus se cita para Baja California, Estado de México, Michoacán, Morelos, Oaxaca, Puebla, Quintana Roo, región central de México y San Luis Potosí (Ortega, 1984;Cantoral y Montejano, 1993;Ortega et al, 1994;Komárek y Novelo, 1994;Valadez et al, 1996;López-Cortés et al, 2001;López-Adrián y Barrientos-Medina, 2005;Montejano et al, 2004Montejano et al, , 2005Moreno et al, 2008). Coelosphaerium confertum West et West (Fig.…”