Monitoring Heavy Metal Pollution in San Antonio Bay, Río Negro, Argentina

Vázquez, Nuria; Gil, M. A.; Esteves, José Luís; Narvarte, Maite Andrea

doi:10.1007/s00128-007-9084-z

Cited by 27 publications

(8 citation statements)

References 9 publications

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“…Litler, 1980; Keough et al ., 1993; Brosnan & Crumrine, 1994; Addessi, 1995; Thompson et al ., 2002). Specifically in BSA, continued anthropogenic activities have shown to affect the invertebrate community of the local intertidal habitat through eutrophication (García et al ., 2010), pollution (Gil et al ., 1996, 1999, 2006; Bonuccelli et al ., 2004; Vázquez et al ., 2007) and habitat degradation (Gil et al ., 2006; Carbone et al ., 2011). How this affects predators up the food chain remains unknown.…”

Section: Discussionmentioning

confidence: 99%

Intertidal habitat use of bottlenose dolphins (Tursiops truncatus) in Bahía San Antonio, Argentina

Vermeulen

2017

J. Mar. Biol. Ass.

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Section: Discussionmentioning

confidence: 99%

Intertidal habitat use of bottlenose dolphins (Tursiops truncatus) in Bahía San Antonio, Argentina

Vermeulen

2017

J. Mar. Biol. Ass.

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“…Limited toxicological research in Argentina, however, indicated elevated levels of heavy metals in bottlenose dolphins in various regions along the Argentinean coast [ 57 , 58 ]. Within our study area, research on the accumulation of heavy metals in crustaceans ( Chasmagnathus granulate ), molluscs ( Brachydontes rodriguezi ), sea lions ( Otario flavescens ) and even in children living near the study area revealed elevated levels of lead, copper, zinc and cadmium in their systems, assumed to be related to a former mining activity in the region that left waste piles still leaching various metals into the environment more than two decades after closure of the mines [ 59 , 60 , 61 , 62 ]. Claps [ 63 ] states “the high levels of accumulation in mussels of lead, zinc, copper and cadmium in the bay of San Antonio might pose a contamination risk throughout the food chain, proving a great threat to larger predators”.…”

Section: Discussionmentioning

confidence: 99%

Demographics of the Disappearing Bottlenose Dolphin in Argentina: A Common Species on Its Way Out?

Vermeulen

Bräger²

2015

PLoS ONE

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Populations of the once common bottlenose dolphin (Tursiops truncatus) in Argentina have precipitously declined throughout the country in the past decades. Unfortunately, local declines of common species are easily overlooked when establishing priorities for conservation. In this study, demographics of what may well be the last remaining resident population in the country were assessed using mark—recapture analysis (Pollock’s Robust Design) of a photo-identification dataset collected during 2006–2011 in Bahía San Antonio (Patagonia, Argentina). Total abundance, corrected for unmarked individuals, ranged from 40 (95%CI: 16.1–98.8) to 83 (95%CI = 45.8–151.8) individuals and showed a decrease over the years. Adult survival rates varied between 0.97 (± 0.037 SE) and 0.99 (± 0.010 SE). Average calving interval equalled 3.5 ± 1.03 years, with 3.5 births/year in the entire population and a minimum annual birth rate of 4.2%. However, data suggest that calves may have been born and lost before being documented, underestimating birth rate, calf mortality, and possibly the number of reproductive females. Either way, the recruitment rate of calves appears to be insufficient to support the size of the population. This population is relatively small and declining. Considering the disappearance of populations north and south of the study area, an incessant decline will have severe consequences for the continuous existence of this species in Argentina, indicating an urgent need for serious conservation efforts. This study provides insight into how the failure to recognize local population declines can threaten the national (and eventually the international) status of a common species like the bottlenose dolphin.

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“…This has produced substantial changes to the biota of many of the more sheltered coastal marine and brackish environment. Pollutants derived from mine tailings have been shown to accumulate in estuarine sediments, reaching concentrations potentially capable of causing biological effects, however, is difficult due to strong natural environmental gradients and the effects of past or present point-sources of contamination [1][2][3].…”

Section: General Perspective On Pollutionmentioning

confidence: 99%

Impact of Iron Ore Tailing on Foraminifera of the Uppateru River Estuary, East Coast of India

Jayaraju¹,

Reddy²,

Reddy³

et al. 2011

JEP

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Benthic foraminiferal assemblages have been used to determine the effects of Iran ore tailing pollution on the marine environment. The present paper attempts to unveil pollution impact as responded by foraminiferal species of Uppateru estuary. The faunal data thus generated is compared with earlier data sets for possible adverse effects. There has been substantial reduction in total foraminiferal number (TFN), from 574 in 2006 to 213 in 2008 species (st.no.3) per10 gram sediment. Even the total species number (TSN) decreased from 27 in (st.no.8) 2006 to 8 (st.no.1) in 2008. Ammonia accounted for its share (68%), followed by Elphidium (7.4%) and Quinqueloculina (6.5%). These genera are considered to be robust and opportunistic type in the study area. This faunal variation in terms of density (TFN) may be owing to the pollution caused by iron ore tailing. This study also supports the view that benthic foraminiferal biota can be used as a tool to monitor marine pollution in general and estuarine environment in specific

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Monitoring Heavy Metal Pollution in San Antonio Bay, Río Negro, Argentina

Cited by 27 publications

References 9 publications

Intertidal habitat use of bottlenose dolphins (Tursiops truncatus) in Bahía San Antonio, Argentina

Intertidal habitat use of bottlenose dolphins (Tursiops truncatus) in Bahía San Antonio, Argentina

Demographics of the Disappearing Bottlenose Dolphin in Argentina: A Common Species on Its Way Out?

Impact of Iron Ore Tailing on Foraminifera of the Uppateru River Estuary, East Coast of India

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