Total benthic foraminifera assemblages in the southwestern Spanish estuaries

Montero, María Luz González-Regalado; Muñoz, Francisco Ruíz; Baceta, Juan Ignacio; González-Regalado, Eduardo; Muñoz, Juan Manuel

doi:10.1016/s0016-6995(01)80042-5

Cited by 28 publications

(29 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In Europe, microfossils also record marine ecological degradation in Spanish estuaries caused by acidic wastewater, metal pollution, eutrophication, oxygen depletion, and increased sedimentation as a result of mining and smelting operations, chemical factories, petroleum refineries, industrialization, and land reclamation (González- Regalado et al 1996;Ruiz Muñoz et al 1997;Cearreta et al 2000;Gonzalez-Regalado et al 2001;Cearreta et al 2002a,b;Pascual et al 2002;Ruiz et al 2004;Irabien et al 2008;Ruiz et al 2008Ruiz et al , 2009). In Portugal, ecosystem changes in the Albufeira Lagoon were caused by salinity increase as a result of anthropogenic alterations of the barrier (Bao et al 1999); whereas on the Atlantic Portuguese coast, changes were caused by urbanization-induced eutrophication and pollution (Amorim and Dale 2006;Bartels-Jó nsdó ttir et al 2006.…”

Section: European and African Watersmentioning

confidence: 99%

Human‐induced marine ecological degradation: micropaleontological perspectives

Yasuhara

Hunt

Breitburg

et al. 2012

Ecology and Evolution

109

View full text Add to dashboard Cite

We analyzed published downcore microfossil records from 150 studies and reinterpreted them from an ecological degradation perspective to address the following critical but still imperfectly answered questions: (1) How is the timing of human-induced degradation of marine ecosystems different among regions? (2) What are the dominant causes of human-induced marine ecological degradation? (3) How can we better document natural variability and thereby avoid the problem of shifting baselines of comparison as degradation progresses over time? The results indicated that: (1) ecological degradation in marine systems began significantly earlier in Europe and North America (∼1800s) compared with Asia (post-1900) due to earlier industrialization in European and North American countries, (2) ecological degradation accelerated globally in the late 20th century due to post-World War II economic growth, (3) recovery from the degraded state in late 20th century following various restoration efforts and environmental regulations occurred only in limited localities. Although complex in detail, typical signs of ecological degradation were diversity decline, dramatic changes in total abundance, decrease in benthic and/or sensitive species, and increase in planktic, resistant, toxic, and/or introduced species. The predominant cause of degradation detected in these microfossil records was nutrient enrichment and the resulting symptoms of eutrophication, including hypoxia. Other causes also played considerable roles in some areas, including severe metal pollution around mining sites, water acidification by acidic wastewater, and salinity changes from construction of causeways, dikes, and channels, deforestation, and land clearance. Microfossils enable reconstruction of the ecological history of the past 102–103 years or even more, and, in conjunction with statistical modeling approaches using independent proxy records of climate and human-induced environmental changes, future research will enable workers to better address Shifting Baseline Syndrome and separate anthropogenic impacts from background natural variability.

show abstract

Section: European and African Watersmentioning

confidence: 99%

Human‐induced marine ecological degradation: micropaleontological perspectives

Yasuhara

Hunt

Breitburg

et al. 2012

Ecology and Evolution

109

View full text Add to dashboard Cite

show abstract

“…In the first case, this absence may be due to the high pollution derived from millennial mining activities and recent industrial sewages (Ruiz, 2001). The fluvial sectors have a high hydrodynamics and coarse grain sizes in the bottom sediments, two severe environmental constraints for these micro‐organisms (González‐Regalado et al. , 2001).…”

Section: Resultsmentioning

confidence: 99%

“…González‐Regalado et al. (2001) indicate the presence of three species of the genus Ammonia ( A. ammoniformis , A. beccarii and A. inflata ) in these estuaries, A. inflata being the most abundant species of this group.…”

Section: Methodsmentioning

confidence: 95%

“…Gonza´lez- Regalado et al (2001) indicate the presence of three species of the genus Ammonia (A. ammoniformis,…”

Section: Taxonomymentioning

confidence: 99%

“…

TaxonomyGonza´lez- Regalado et al (2001) indicate the presence of three species of the genus Ammonia (A. ammoniformis,

ABSTRACTThe application of the Poisson regression to the populations of the benthic foraminifer Ammonia tepida collected in three southwestern Spanish estuaries permits to obtain a quantitative approach between some environmental variables and the number of individuals of this species. Although the three general models are unsatisfactory to predict the observed abundance of this micro-organism, a partial statistical analysis permits to detect quantitatively the impact of each variable.

…”

mentioning

confidence: 99%

See 2 more Smart Citations

New applications of the Poisson distribution in micropalaeontology: relationships between environmental variables and the Ammonia tepida distribution in the south‐western Spanish estuaries

et al. 2007

View full text Add to dashboard Cite

The application of the Poisson regression to the populations of the benthic foraminifer Ammonia tepida collected in three south‐western Spanish estuaries permits to obtain a quantitative approach between some environmental variables and the number of individuals of this species. Although the three general models are unsatisfactory to predict the observed abundance of this micro‐organism, a partial statistical analysis permits to detect quantitatively the impact of each variable. This analysis indicates an increasing abundance from the high‐salt marshes to the subtidal channels and higher densities in those samples subjected to very euryhaline conditions. Increasing sand percentages show negative effects on the A. tepida abundance, whereas the silt contents do not affect significantly to this species and increasing organic carbon percentages have a small positive effect on the A. tepida densities.

show abstract