In order to understand changes in the functioning and the community structure of intertidal ecosystem in sewage-impacted sites, a long-term monitoring coverage study (2004-2011) was carried out on abrasion platforms of the SW Atlantic. The intertidal zone is characterized by the mytilid Brachidontes rodriguezii, an ecosystem engineer. Since the austral spring of 2008, a demographic explosion of an invader polychaetes, Boccardia proboscidea, has produced massive biogenic structures around the sewage discharge outfall. Cover percentage of this polychaete reached almost 100% in sewage-impacted sites but low or no coverage at all in Reference Sites. The density of B. rodriguezii declined due to the biogenic reefs stifles these mytilids. The massive settlement of B. proboscidea among mussels, the rapid growth and the tube construction smothers the mussels in sewage-impacted sites.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.marpolbul.2013.03.011 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Spatial patterns of macrozoobenthos diversity on sewage-impacted intertidal rocky shores in Central Patagonia, Argentina.
Mar Pollut Bull
December 2024
Instituto de Desarrollo Costero Dr. Héctor E. Zaixso, Universidad Nacional de la Patagonia San Juan Bosco (UNPSJB), Comodoro Rivadavia, Ruta 1, km4 S/N, 9000, Chubut, Argentina; Facultad de Ciencias Naturales y Ciencias de la Salud, UNPSJB, Argentina.
The effects of untreated wastewater and shore levels on zoobenthic diversity, species accumulation, and abundance-biomass relationships were studied on intertidal rocky shores of central Patagonia, Argentina. Winter samples (2015) from two sewage-impacted and two reference sites showed that pollution disrupted macrozoobenthic diversity and zonation. A total of 83 taxa were identified, with polychaetes (31 species), mollusks (22), and crustaceans (21) being the most diverse.
View Article and Find Full Text PDFAssessment of seawater quality and bacteriological pollution of rocky shores in the central coast of San Jorge Gulf (Patagonia, Argentina).
Mar Pollut Bull
January 2020
Instituto de Desarrollo Costero Dr. Héctor E. Zaixso, Universidad Nacional de la Patagonia San Juan Bosco (UNPSJB), Comodoro Rivadavia, Ruta 1, km4 S/N, 9000, Chubut, Argentina; Facultad de Ciencias Naturales y Ciencias de la Salud - UNPSJB, Comodoro Rivadavia, Ruta 1, km4 S/N, 9000, Chubut, Argentina. Electronic address:
We assessed seasonal and spatial variability of seawater quality and bacterial pollution in two sewage-impacted and two reference rocky shores in the area of Comodoro Rivadavia, the largest city in central Patagonia. Samples taken from winter 2015 to autumn 2017 at different intertidal levels showed that the impacted sites experienced a decrease of salinity-more pronounced towards the autumn-, a slightly higher turbidity, the lowest values of dissolved oxygen, and significantly higher concentrations of nitrates throughout the year. They also were up to ten times above the legal limit of fecal indicator bacteria (FIB) for recreation and fishing areas.
View Article and Find Full Text PDFEnvironmental risks associated with contaminants of legacy and emerging concern at European aquaculture areas.
Environ Pollut
September 2019
Biogeochemistry Research Centre, University of Plymouth, Plymouth, United Kingdom; Plymouth Marine Laboratory, Prospect Place, the Hoe, Plymouth, PL1 3DH, United Kingdom.
The contamination of marine ecosystems by contaminants of emerging concern such as personal care products or per- and polyfluoroalkyl substances is of increasing concern. This work assessed the concentrations of selected contaminants of emerging concern in water and sediment of European aquaculture areas, to evaluate their co-variation with legacy contaminants (polycyclic aromatic hydrocarbons) and faecal biomarkers, and estimate the risks associated with their occurrence. The 9 study sites were selected in 7 European countries to be representative of the aquaculture activities of their region: 4 sites in the Atlantic Ocean and 5 in the Mediterranean Sea.
View Article and Find Full Text PDFImpact of endocrine disrupting compounds in sewage impacted coastal area on seabream.
Ecotoxicol Environ Saf
April 2018
Environmental Pollution and Climate Program, Environment and Life Sciences Research Center, Kuwait Institute for Scientific Research, P.O. Box 24885, Safat 13109, Kuwait.
The pollution of coastal regions worldwide has been of a great concern due to the presence of endocrine disrupting chemicals (EDCs). These chemicals find their way to the marine environment via the sewage treatment plants (STPs). Hence, this study was designed to investigate the status and sources of EDCs and their effect on fish in Kuwait's coastal areas, from the chemical and biological perspectives.
View Article and Find Full Text PDFOccurrence of antimicrobial agents, drug-resistant bacteria, and genes in the sewage-impacted Vistula River (Poland).
Environ Sci Pollut Res Int
February 2018
Department of Environmental Health Sciences, Faculty of Pharmacy, Medical University of Warsaw, 1 Banacha Street, 02097, Warsaw, Poland.
Antimicrobial agents (antimicrobials) are a group of therapeutic and hygienic agents that either kill microorganisms or inhibit their growth. Their occurrence in surface water may reveal harmful effects on aquatic biota and challenge microbial populations. Recently, there is a growing concern over the contamination of surface water with both antimicrobial agents and multidrug-resistant bacteria.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!