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ITES UPR-Río Piedras Campus Acknowledgements: Michael Winslow, Coordinator CWDD VT EPSCoR Lindsay Wieland, ExDirector VT EPSCoR Streams Project Livia Donicova, VT EPSCoR CWDD Project Manager Janel Roberge, Senior Research Technician VT EPSCoR CWDD NSF, Vermont EPSCoR, RACC, CWDD Problem: Can the pH, temperature, and total suspended solids in the water of the Duey River and Yauco River will influence the factors in the diversity and abundance of species? Hypothesis: The pH, temperature, and total suspended solids of the Duey and Yauco Rivers will vary the diversity and abundance of species. Methodology: The researchers: • Selected a topic and searched for information. • Selected two rivers in the town of Yauco : Yauco River and Duey River to perform the research. • Visited each selected river four times for collecting the samples of macroinvertebrates. • Measured the pH and temperature of the water in each visit. • Also, collect three water samples in each visit to send to the VT EPSCoR CWDD to measured the total suspended solid (TSS). • Used a network to collect these samples of macroinvertebrates. • Placed the macroinvertebrates collected in a small plastic bag with alcohol. • Carefully analyzed the samples from a microscope. • Identified each one of them macroinvertebrates by using the guide to aquatic macroinvertebrates of the upper Midwest or Puerto Rico. • Arrived to conclusions. Funding provided by NSF Grant EPS‐1101317 Noelia Báez Prog. Coord. LTER Schoolyard Study Sites: Site 1: Site 2: Duey River Yauco River Yauco, PR Yauco, PR Conclusion: In general, by the data we collected, it can be inferred that both rivers have a good water quality. We found that none of the rivers were affected by the anthropologic or chemical effects; there were only find a species that is associated with pollution, the Beatidae. It is recommended a long term detailed research to determinate if indeed have good water quality. References: • Biodiversidad mexicana. (2016). ¿Qué son las especies?. Recuperado de http://www.biodiversidad.gob.mx/especies/queson.html • Bouchard, R. W. (2004). Guide to aquatic invertebrates of the upper Midwest: Identification Manual for students, citizen monitors, and aquatic resource professionals. University of Minnesota. • Alonso Rodríguez, A. M., Gutiérrez Fonseca, P. y Ramírez, A. (2016). Guía fotográfica de familias de macroinvertebrados acuáticos de Puerto Rico. Universidad de Puerto Rico, Recinto de Río Piedras. Recuperado de https://www.researchgate.net/publication/295854904_Guia_fotografica_de_f amilias_de_ macroinvertebrados_acuaticos_de_Puerto_Rico • Ciencia geográfica. (2014). Los ríos. Recuperado de http://cienciageografica.carpetapedagogica.com/2008/03/los-rios.html • Ortiz Zayas, J. R. (s.f.). Redescubriendo el valor del agua: taller de investigación limnológica. Luquillo LTER – Schoolyard Program. • Resh, V. H. (2008). Which group is best? Attributes of different biological assemblages used in freshwater biomonitoring programs. Environ. Monit. Assess, 138: 131–138. • U.S. Department of the Interior. (2014). Calidad del agua. La ciencia del agua para escuelas. Recuperado de http://water.usgs.gov/gotita/waterquality.html AT SAINT MICHAEL’S COLLEGE Introduction: This investigation has the purpose of comparing the diversity and abundance of the macroinvertebrates found in Duey River (Site 1) and in Yauco River (Site 2) as indicators to determinate the quality of the water. In addition, it has been started a habitat assessment by collecting data about the pH, temperature, and total suspended solids, among others. The Yauco River was born in the Puerto Rico Mountain Range from the North between Frailes (Yauco, PR) and Indiera (Maricao, PR) Districts passing through the Luchetti Reservoir. The Duey River was born in the District of Aguas Blancas and is the main tributary of the Yauco River and finishes in the Caribbean Sea by the Guayanilla Bay covering a distance of 22 miles (35 kilometers). The Aquatic macroinvertebrates are substrates organisms which live from the bottom of the aquatic systems whether sediments, rocks, and leaves. They can be affected by anthropogenic defects caused by man in different types of the water systems. Data and Results Yauco River Duey River Duey River Yauco River • There are 15 species. • Total of macroinvertebrates are 107. • The Xiphocentromidae was the most abundant species in this river with 49 organisms. • The least abundant species was Beatidae with 14 organisms. • There are more anthropologic effects present in this river, trash, animal waste , and a bridge. • The average of temperature is 23.9˚C in this river. • The average of pH is 8.0 in this river. • The average of TSS is 8.8 mg/L. • There are 14 species. • Total of macroinvertebrates are 115. • The Libellulllidae was the most abundant species in this river with 25 organisms. • The least abundant species was Beatidae with 3 organisms. • There are minor anthropologic effects present like 4x4 vehicles crossing the river and there’s a recreational park near . • The average of temperature is 22.0˚C in this river. • The average of pH is 7.9 in this river. • The average of TSS is 11.4 mg/L. Pachydiplax longipennis (Libellulidae) Xiphocentronidae Philorus califormicus (Blepharicedae) Helichus (Dryoppidae) Polycentropus (Polycentropodidae) Baetis (Beatidae) Baetis (Beatidae) Buruquena Both rivers have in common the following species: Beatidae, Buruquena, Ceratogonidae, Libellullidae, Philotopotamidae, Xiphocentronidae, and Nymphulinae. Baetid ae Buruq uena Larve Cerato pogoni dae Chriro nomid ae Gamm arus Fasciat us Hydro biosid ae Hydro philida e Hydro psychi dae Libellu llidae Metre topodi dae Nymp hulina e Philop otami dae Police ntropo didae Sisyrid ae Xiphoc entron idae Total of macroi nverte brates Duey River 14 1 1 1 11 9 2 4 1 1 3 4 4 2 49 107 Yauco River 3 4 5 0 0 0 0 0 9 0 10 12 0 0 18 61 0 20 40 60 80 100 120 Quantity Diversity and Abundance of macroinvertebrates in Yauco River and Duey River in Yauco, Puerto Rico 1.3 21.2 10.9 2.0 21.5 18.3 4.1 1.6 0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0 September 5,2016 October2,2016 January22,2017 February5,2017 Total Suspended Solid Collected date Average of Total Suspended Solid in Duey River and Yauco River Duey River Yauco River 7.8 7.8 8.1 8.3 8.0 7.9 8.9 7.9 7.8 8.1 8.1 8.1 25.5 25.5 22.5 22.2 22.4 22.4 22.0 21.9 22.1 22.1 23.3 20.6 0 5 10 15 20 25 30 7.2 7.4 7.6 7.8 8 8.2 8.4 8.6 8.8 9 1 2 3 4 5 6 Temperature (˚C) pH Visits Temperature and pH of Duey and Yauco River Yauco River pH Duey River pH Duey River Temperature (˚C) Yauco River Temperature (˚C) For more information Glenda Almodóvar, MA. Ed., [email protected]
