Organic pollution in Ensenada Bay, Mexico

Lizarraga-Partida, M.L.

doi:10.1016/0025-326x(74)90258-6

Cited by 10 publications

(3 citation statements)

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“…The significant differences between the stations located in the harbour and those located along the coast (October: F = 5.05, P -0.05; March: F = 9.28, P < 0.05; Sep tember: F = 78.08, P 5 0.05), confii the existence of two well-differentiated zones: zone 1 equivalent to the harbour, including the El Sauzal station, and zone II which includes the other coastal stations. At stations 6, 7, 8, 9 and CR (zone 1), the predominant species were Capitella capitata, Armandia bioculata and Schistometingos longicomis, organisms characteristic of contaminated areas; these stations coincided with those reported by Lizárraga-Partida (1974) and Donath-Hemanda and Loya-Salinas (1989). In zone II, the predominant species were Prionospio pygmaeus and nemerteans, characteristic of clean areas.…”

Section: Discussionsupporting

confidence: 79%

Impact Of Industrial And Domestic Waste Waters On The Benthic Communities Of Todos Santos Bay, Baja California, Mexico

Encalada-Fleites

Millán-Núñez²

1990

Cienc. Mar.

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Impact of industrial and domestic waste waters on the benthic communities of Todos Santos Bay, Baja California, Mexico. Ciencias Marinas, 16(4): 121-139. RESUMEN Se tomaron muestras de organismos bentónicos de 14 estaciones en la Bahía de Todos Santos, en tres épocas del año, octubre 1980, marzo 1981 y septiembre del mismo año, en la isobata de 10 m excepto en la zona de la rada del puerto. Se les determinó la biomasa, indice trófico de la infauna y diversidad, obteniéndose un total de 152 especies en dos zonas bien diferenciadas (rada portuaria y zona costera); en la primera se encontraron especies indicadoras de contaminación, Capitella capitata y Atmandia bioculata, y la segunda con una gran diversidad de especies, caracteristico de zonas no afectadas por la contaminación orgánica. Sin embargo, este estudio no mostró diferencias significativas a través del tiempo para los diferentes parámetros aquí reportados.

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Section: Discussionsupporting

confidence: 79%

Impact Of Industrial And Domestic Waste Waters On The Benthic Communities Of Todos Santos Bay, Baja California, Mexico

Encalada-Fleites

Millán-Núñez²

1990

Cienc. Mar.

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“…As shown elsewhere, such changes are common for regions exposed to high organic input (PEARSON and ROSENBERG, 1978). Nephtys spp., common within Group VIII, occurs in stressed benthic communities elsewhere and in Prince William Sound, and is tolerant of low oxygen conditions (LIZARRAGA-PARTIDA, 1974;PEARSON and ROSENBERG, 1978;JEWETT et al, 1996). Although Nephtys is mainly a predator, it can scavenge and utilize high organic loads associated with decay of dead organisms (FAUCHALD and JUMARS, 1979;JEWETT et al, 1996).…”

Section: Discussionmentioning

confidence: 99%

The Macrobenthos of Sites within Prince William Sound, Alaska, Prior to the Exxon Valdez Oil Spill

Hoberg

Feder

2002

Internat. Rev. Hydrobiol.

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“…Numerous investigations have shown benthic opportunists to fluorish from organic ennchment of non-petroleum sources (e.g. Lizarraga-Partida 1974, Pearson & Rosenberg 1978, Anderlini & Wear 1992.…”

Section: Hydrocarbons In Sedimentsmentioning

confidence: 99%

Exxon Valdez oil spill: impacts and recovery in the soft-bottom benthic community in and adjacent to eelgrass beds

Jewett¹,

Dean²,

Smith³

et al. 1999

Mar. Ecol. Prog. Ser.

104

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We assessed impacts of the 'Exxon Valdez' oil spill on bentluc communities within and adjacent to eelgrass beds in Prince William Sound, Alaska, USA. The concentration of total polynuclear aromatic hydrocarbons (TPAHs),'benthic community composition. diversity, biomass, and abundance were compared between matched pairs of oiled and reference sites in 1990 (approx. 16 mo after the spill), andin 1991, 1993, and 1995. TPAHs in sediments were high (up to 15300 ng g.') at sites adjacent to oiled shorelines in 1990, but declined sharply thereafter. Some reference sites in 1990-91 also had elevated TPAHs in sediments and signatures matching Exxon Valdez oii, but concentrations were significantly lower than at oiled sites. Based on classification and ordination analyses, cornrnunities of infauna and small epifauna at some oiled sites in 1990 differed from communities at reference sites, and from the Same sites in subsequent years. Percent sand and mud aild concentration of total chrysenes (PAH analytes indicative of crude oil) explained significant proportions of the temporal and spatial variation in benthic community structure. Total abundance and biomass of epifauna were generaliy higher at oiled sites, primarily because of higher densities of epifaunal bivalves. Otherwise, there were few consistent cornrnunity-wide responses to oiling in diversity. richness, total abundance. total biomass. or the abundances of major taxonomic groups (e.g. polychaetes or bivalves). We attnbute the lack of a stronger community-wide response to the varying sensitivities of constituent taxa to oil and organic enrichment. Over half of the dominant famiiies differed with respect to abundance at oiled versus reference sites Most, including 9 families of polychaetes, were more abundant at oiled sites. Most of these were stress-tolerant or opportunistic. and their increase was likely due to organic enrichment. Negative impacts were most evident in oil-sensitive amphipods, especially the families Isaeidae and Phoxocephalidae. There were consistently more of these amphipods at reference sites, and abundances at oiled sites were likely reduced as a result of oil toxicity. Most of these differences between oiled and reference sites persisted through 1995,6 yr after the spill. We suspect that these differences are a result of the spill, but we rely on post-spill coinparisons to infer impacts, and our conclusions rely on the untestable assumption of equality between oiled and reference sites in the absence of a spill. Future assessments of the impacts of oil spiiis or other accidental environmental disturbances could benefit from pre-iinpact studies that provide objective critena for selection of matched pairs of sites, thereby supporting the assumption of equality in the absence of the disturbance.

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Organic pollution in Ensenada Bay, Mexico

Cited by 10 publications

References 0 publications

Impact Of Industrial And Domestic Waste Waters On The Benthic Communities Of Todos Santos Bay, Baja California, Mexico

Impact Of Industrial And Domestic Waste Waters On The Benthic Communities Of Todos Santos Bay, Baja California, Mexico

The Macrobenthos of Sites within Prince William Sound, Alaska, Prior to the Exxon Valdez Oil Spill

Exxon Valdez oil spill: impacts and recovery in the soft-bottom benthic community in and adjacent to eelgrass beds

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