Cianofitas de los sistemas fluvio-lagunares Pom-Atasta y Palizada del Este, adyacentes a la Laguna de Términos, Campeche, México

Muciño-Márquez, Rocío Elizabeth; Figueroa-Torres, María Guadalupe; Aguirre-León, Arturo

doi:10.18387/polibotanica.39.3

Cited by 9 publications

(13 citation statements)

References 42 publications

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“…In the study area cyanobacteria were present on the order of magnitude of 10 6 cells L , respectively (Muciño-Márquez et al, 2014;Muciño-Márquez et al, 2015). Cylindrospermopsis cuspis was reported in the region of Los Tuxtlas in the southeastern part of the state of Veracruz (Komárek and Komárková-Legnerová, 2002;Komárek, 2003), with no apparent toxic episodes.…”

Section: Discussionmentioning

confidence: 78%

“…Harmful algal blooms (HAB) caused by cyanobacteria affect water quality, fish resources, animals and human beings (Muciño-Márquez et al, 2015). Due to the production of excessive biomass, they can cloud the water, thereby inhibiting phytoplankton photosynthesis, and they also produce toxins, causing unpleasant odors in water, decrease the dissolved oxygen concentration and therefore its availability to consumers, and inhibit the growth of other phytoplankton species that serve as food for consumers (Echenique and Aguilera, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Potentially harmful cyanobacteria in oyster banks of Términos lagoon, southeastern Gulf of Mexico

Poot-Delgado¹,

Okolodkov²,

Aké-Castillo³

et al. 2018

Acta biol. Colomb.

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Cyanobacteria inhabit hypersaline, marine and freshwater environments. Some toxic and non-toxic species can form harmful blooms. The aim of this study was to identify potentially harmful cyanobacterial species in the oyster banks of Términos Lagoon, the southeastern Gulf of Mexico. Six sample sites (up to 2-m depth) were monitored monthly from August 2012 to September 2013. Water temperature, salinity, pH, dissolved oxygen saturation (% DO), inorganic nutrients and abundance of cyanobacteria were determined. Temperature and salinity were characterized by marked seasonal differences (26.8 to 30.6 °C and 6.1 to 19.5, respectively). The pH values (ranging from 7.1 to 8.4) and the % DO (88.4 to 118.2 %) suggest a predominance of photosynthetic activity in the windy season (October-February). Elevated nutrient contents are associated with the period of increased river discharge, determined by water circulation and biogeochemical processes. Fourteen taxa were identified, of which Anabaena sp., Merismopedia sp., Oscillatoria sp. and Cylindrospermopsis cuspis produced blooms. Cyanobacterial abundances were on the order of magnitude of 10 6 cells L -1 in October 2012 at stations S1-S6, with an average value of 3.2x10 5 cells L -1 and a range of 2000 to 3.1x10 6 cells L -1 throughout the study period; however, they showed a remarkable absence during the windy season (October to January). Anabaena sp. and C. cuspis reached abundances of 1.9x10 6 and 1.3x10 6 cells L -1, respectively. The latter caused the temporary closure of oyster Crassostrea virginica harvesting for 15 days in October 2012.

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Section: Discussionmentioning

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Potentially harmful cyanobacteria in oyster banks of Términos lagoon, southeastern Gulf of Mexico

Poot-Delgado¹,

Okolodkov²,

Aké-Castillo³

et al. 2018

Acta biol. Colomb.

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Section: Iintroductionmentioning

confidence: 99%

“…Gray, Chaetoceros Ehrenb., Rhizosolenia Brightw., Nitzschia Hassall, Ceratium Schrank and Protoperidinium Bergh as the main taxonomic groups in Boca Atasta and Boca Chica. Muciño-Márquez et al (2014) In the present study, unlike in all previous ones performed in Términos Lagoon, we followed seasonal changes in species composition, with an emphasis on major taxonomic groups and potentially harmful species, based on the analysis of monthly samples taken from August 2012 to September 2013. The purpose of this study was to characterize the phytoplankton community and to determine the physical-chemical factors that favor the presence of harmful species throughout an annual cycle.…”

Section: Iintroductionmentioning

confidence: 99%

“…1). This fluvial-lagoon system is connected with Términos Lagoon and it is a storage area; along with freshwater, the fluvial system transports sediment, organic matter, nutrients and organisms to the to the lagoon (Rojas-Galavíz et al 1990, Bach et al 2005, Muciño-Márquez et al 2014.There are few studies of the phytoplankton community of fluvial-lagoon systems adjacent to Términos Lagoon. Barreiro-Güemes & Aguirre-León (1999) conducted a study on the spatial-temporal distribution of phytoplankton biomass, reporting an average chlorophyll a concentration of 19.86 mg m -3 .…”

mentioning

confidence: 99%

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Annual cycle of phytoplankton with emphasis on potentially harmful species in oyster beds of Términos Lagoon, southeastern Gulf of Mexico

Poot-Delgado

Okolodkov

Aké-Castillo³

et al. 2015

Rev. biol. mar. oceanogr.

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Ciclo anual del fitoplancton con énfasis en las especies potencialmente nocivas en bancos ostrícolas de la laguna de Términos, sureste del Golfo Resumen.-Para definir la composición de la comunidad fitoplanctónica con énfasis en las especies nocivas en los bancos ostrícolas de la laguna de Términos, SE del Golfo de México, 6 sitios de muestreo fueron monitoreados mensualmente desde agosto 2012 a septiembre 2013. Se midió la temperatura del agua, salinidad, potencial de hidró geno, saturación de oxígeno, nutrientes inorgánicos y la abundancia de fitoplancton. La temperatura y la salinidad se caracterizaron por diferencias estacionales marcadas. Los valores de pH y saturación de oxígeno sugirieron un predominio de la actividad fotosintética. La comunidad fitoplanctónica se caracter izó por el predominio de nanoflagelados y dia tomeas. La abundancia de fitoplancton y su variación estacional presentaron los valores mínimos (10 3 células L -1 ) durante la época de secas (febrero-mayo) y valores al tos (10 6 célul as L -1 ) dur ante la temporada de lluvias (junio-septiembre). Otra característica importante de la comunidad fitoplanctónica fue la presencia de especies de dinoflagel ados nocivos: Akashiwo sanguinea, Karenia cf. mikimotoi, Pyrodinium bahamense var. bahamense, Prorocentrum mexicanum y P. minimum. Las cianobacterias Anabaena y Cylindrospermopsis cuspis alcanzaron abundancias de 1.9x10 6 y 1.3x10 6 células L -1 , respecti vamente. Los g éneros Alexandrium y Pseudo-ni tzschia estuvi eron presentes, pero los taxones no fueron identificados a nivel de especie. En conclusión, la comunidad fitoplanctónica se somete a cambios en la composición de especies y en la estructura de la comunidad durante cada temporada climática, en respuesta a la variación ambiental, que permite el desarrollo de la comunidad fitoplanctónica de acuerdo a las condiciones imperantes. Palabras clave: Cambios estacionales, cianobacterias, diatomeas, dinoflagelados, lagunas costerasAbstract.-To define the composition of the phytoplankton community, with an emphasis on harmful species, 6 stations were monitored monthly in the oyster beds of Términos Lagoon, SE Gulf of Mexico, from August 2012 to September 2013. Water temperature, salinity, hydrogen potential, oxygen saturation, inorganic nutrients and abundance of phytoplankton were determined. Temperature and salinity were characterized by marked seasonal differences. The pH values and the oxygen saturation suggest a predominance of photosynthetic activity. The phytoplankton community was characterized by the dominance of nanoflagellates and diatoms. , respectively. The genera Alexandrium and Pseudo-nitzschia were present, but the taxa were not identified to the species level. In conclusion, the phytoplankton community undergoes changes in both species composition and structure of the community during each climatic season, in response to environmental variation, which allows the development of the phytoplankton community according to the conditions. Key words: Seasonal changes, cyanobacteria,...

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Diet of Lontra longicaudis in La Sangría Lagoon, México

Vázquez-Maldonado

Delgado-Estrella

2022

Therya notes

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En Campeche hay registros de nutria neotropical, Lontra longicaudis, pero la información ecológica es escasa. Se analizó la dieta de esta especie que habita la laguna La Sangría para conocer las preferencias alimentarias a lo largo de un año identificando los restos encontrados en las heces. Los datos se obtuvieron de la revisión de heces y comederos. Una vez por temporada (nortes 2016, secas y lluvias 2017), se recorrieron 11.9 km de la ribera. Se analizaron 126 heces y un comedero colectados en 52 sitios, evaluando el porcentaje de aparición (PA) y amplitud de nicho ecológico (índice de Levins) identificando los restos hasta el máximo nivel taxonómico posible. Se identificaron 7 grupos principales de presas: peces, crustáceos, moluscos, mamíferos, aves, mamíferos y otros. De un total de 16 categorías de presas, los peces fueron los mejor representados al tener un mayor PA y número de géneros, incluida la presencia de pez diablo (especie invasora), seguida de crustáceos y moluscos. No existió variación en las frecuencias de consumo de las presas por temporada climática, pero sí hubo diferencia estadística en la diversidad de especies consumidas. Se confirmó la presencia de 3 especies nativas y 4 posibles nuevos registros de peces como presas. El índice de Levins indicó que la laguna La Sangría presenta una amplitud de nicho para la nutria que tendió a la especialización (0.2078). Al comparar esta dieta con la registrada por otros autores en otras localidades, se evidencia la adaptabilidad trófica de la nutria neotropical y se resalta su valor ecológico.

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Cianofitas de los sistemas fluvio-lagunares Pom-Atasta y Palizada del Este, adyacentes a la Laguna de Términos, Campeche, México

Cited by 9 publications

References 42 publications

Potentially harmful cyanobacteria in oyster banks of Términos lagoon, southeastern Gulf of Mexico

Potentially harmful cyanobacteria in oyster banks of Términos lagoon, southeastern Gulf of Mexico

Annual cycle of phytoplankton with emphasis on potentially harmful species in oyster beds of Términos Lagoon, southeastern Gulf of Mexico

Diet of Lontra longicaudis in La Sangría Lagoon, México

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