Footprint of deepwater horizon blowout impact to deep-water coral communities

On April 20, 2010, the Deepwater Horizon (DWH) blowout occurred, releasing more oil than any accidental spill in history. Oil release continued for 87 d and much of the oil and gas remained in, or returned to, the deep sea. A coral community significantly impacted by the spill was discovered in late 2010 at 1,370 m depth. Here we describe the discovery of five previously unknown coral communities near the Macondo wellhead and show that at least two additional coral communities were impacted by the spill. Although the oil-containing flocullent material that was present on corals when the first impacted community was discovered was largely gone, a characteristic patchy covering of hydrozoans on dead portions of the skeleton allowed recognition of impacted colonies at the more recently discovered sites. One of these communities was 6 km south of the Macondowellhead and over 90% of the corals present showed the characteristic signs of recent impact. The other community, 22 km southeast of the wellhead between 1,850 and 1,950 m depth, was more lightly impacted. However, the discovery of this site considerably extends the distance from Macondo and depth range of significant impact to benthic macrofaunal communities. We also show that most known deep-water coral communities in the Gulf of Mexico do not appear to have been acutely impacted by the spill, although two of the newly discovered communities near thewellhead apparently not impacted by the spill have been impacted by deep-sea fishing operations

Propuesta de un plan estratégico para el tratamiento de los residuos orgánicos mediante un biodigestor en el distrito de La Victoria – Chiclayo 2011

TesisEsta investigación tiene como objetivo fundamental elaborar un plan estratégico para el manejo de residuos sólidos urbanos en el distrito de la victoria-Chiclayo.2012. El desarrollo de una planificación estratégica produce beneficios relacionados con la capacidad de realizar una gestión más eficiente, liberando recursos humanos y materiales, lo que redunda en la eficiencia productiva y en una mejor calidad de vida y trabajo para todos los miembros. El tipo de investigación utilizado es Descriptivo – Propositivo, y el diseño de la investigación es No experimental y Transversal. Para la recolección de datos se utilizó un cuestionario tipo encuesta a una muestra de 382 elementos, donde se ha considerado a los pobladores del distrito de la victoria-Chiclayo. Los resultados de la Investigación evidenciaron que el 76% de los encuestados afirmo que el municipio no gestiona eficientemente el manejo de residuos sólidos urbanos, por tanto se origina el acumulamiento de basura en ciertas zonas del distrito y es de suma importancia poner atención en alternativas de solución para el buen manejo de los residuos sólidos urbanos. La investigación concluye que el estado actual del manejo de residuos sólidos urbanos por el municipio del distrito de la victoria-Chiclayo, es deficiente

Data from: Evidence of lasting impact of the Deepwater Horizon oil spill on a deep Gulf of Mexico coral community

This dataset contains digital still images (*.jpg, *.png, or *.tif files) of cold-water coral colonies at Mississippi Canyon (MC) 294 in the Gulf of Mexico. They are organized into folders by the five visits to the site in November and December 2010 (2010-11 and 2010-12), March and October 2011 (2011-03 and 2011-10), and March 2012 (2012-03). Within the folders for each visit, each coral is represented by sub-folders with its ID (e.g. A10) which contains the actual image file