Algal diversity of Zempoala Lagoons National Park, Mexico, except diatoms
Por:
Luis Godinez-Ortega, Jose, Guadalupe Oliva-Martinez, Maria, Antonio Escobar-Oliva, Marco, Mendoza-Garfias, Berenit
Publicada:
1 ene 2017
Resumen:
Background. The Parque Nacional Lagunas de Zempoala (PNLZ) is located in
a transitional zone between the Nearctic and Neotropical regions, and
harbors a great phycofloristic diversity. The lakes studied were
Zempoala, Compila, Tonatihua and Prieta, and the stream that flows into
Zempoala lake. With the exception of Zempoala lake, the others are
studied for the first time. Goals. To study of phycofloristic
composition of aquatic environments of the PNLZ. Methods. The samples
(23) were collected in March-April 2011, using a towed net of 20 mu m.
Ten L of water were filtered and algae mixed with aquatic plants were
collected. The samples were fixed with 4% formalin. Water temperature
pH, and conductivity were measured. Samples were observed under light
microscopy (LM) and scanning electron microscopy (SEM). Results. The pH
of the studied lakes was 7.1-8.8, the surface water temperature was
recorded between 14.2-17 degrees C and the conductivity varied between
112-124 mu S cm(-1). Fifty-five species were identified, with a
dominance of Chlorophyceae (13), Cyanophyceae (12), Trebouxiophyceae
(9), Euglenophyceae (7) and Zygnematophyceae (6). Some common bluegreens
were Woronichinia and Planktolyngbya. Others such as Cryptomonas
(Cryptophyta), Ceratium and Peridinium (Dinoflagellata) were abundant.
Chlorophyta encompassed the entire study area (Scenedesmus, Eudorina,
Botryococcus and Lagerheimia). They emphasize Staurastrum and Cosmarium
(Charophyta). Three benthic genera Prasiola, Chara and Nitella were
recorded in PNLZ. Other green algae grew as metaphytes and epiphytes.
39.3% of the species are cosmopolitan; others have tropical and neartic
affinities. Ten new registries were determined for Mexico. Conclusions.
Compared to other Mexican lakes, those studied here can be considered of
high richness and diversity, particularly with respect to phytoplankton.
The lack of knowledge and the disturbance of the continental aquatic
environments, threaten the survival of the phytoplankton community, so
it is important to integrate studies that include various areas of
biology, as well as public policies for their management and
conservation.
Filiaciones:
Luis Godinez-Ortega, Jose:
Univ Nacl Autonoma Mexico, Dept Bot, Inst Biol, Tercer Circuito Exterior S-N,Ciudad Univ, Ciudad De Mexico 04510, Mexico
Guadalupe Oliva-Martinez, Maria:
UNAM, Unidad Morfol & Func, Fac Estudios Super Iztacala, Av Barrios 1, Tlalnepantla 54090, Estado De Mexic, Mexico
Antonio Escobar-Oliva, Marco:
UNAM, Unidad Morfol & Func, Fac Estudios Super Iztacala, Av Barrios 1, Tlalnepantla 54090, Estado De Mexic, Mexico
Mendoza-Garfias, Berenit:
Univ Nacl Autonoma Mexico, Dept Bot, Inst Biol, Tercer Circuito Exterior S-N,Ciudad Univ, Ciudad De Mexico 04510, Mexico
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