Benthic diversity of coastal brackish-water lagoons in western Greece

Reizopoulou, Sofia; Nicolaidou, A.

doi:10.1002/aqc.653

Cited by 107 publications

(81 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This adds to the unpredictability of the community characteristics of the lagoons and may affect the degree of confinement -or time required to renew the marine elements of a lagoon, according to GUELORGET & PERTHUISOT (1992). These authors stressed the importance of confinement in the distribution of species within a lagoon and NICOLAIDOU (2004) andNICOLAIDOU et al (2005) found a strong negative correlation of confinement with species numbers and diversity in Greek lagoons.…”

Section: Naineris Laevigatamentioning

confidence: 98%

Lack of temporal variability in the benthos of a coastal brackish water lagoon in Greece

Nicolaidou

2007

Medit. Mar. Sci.

View full text Add to dashboard Cite

The benthic fauna was studied in the small, brackish water Mazoma Lagoon in the Amvrakikos bay.Benthic samples were collected at 10 stations at bimonthly intervals over a period of a year. Temperature, salinity, dissolved oxygen and sediment organic carbon were also measured at the same time. The environmental parameters showed the expected seasonal variability but the benthic community, the structure of which was only related to plant biomass, did not. This lack of seasonality is attributed to the continuous reproduction of some abundant species and to species interactions.

show abstract

Section: Naineris Laevigatamentioning

confidence: 98%

Lack of temporal variability in the benthos of a coastal brackish water lagoon in Greece

Nicolaidou

2007

Medit. Mar. Sci.

View full text Add to dashboard Cite

show abstract

“…They are characterized by complex interactions among multiple factors, including abiotic, biotic, and anthropic. Naturally unstable environmental features due to shallowness and confinement from the open-sea produce stressful conditions (Reizopoulou and Nicolaidou 2004). In addition, the geographical continuity with terrestrial ecosystems determines continual exchange and transfer of organic and inorganic materials, thus often resulting in accumulation of organic matter (OM) and pollutants as well as alteration to the natural equilibrium (De Lacerda 1994).…”

mentioning

confidence: 99%

Trophic Transfer of Trace Elements in an Isotopically Constructed Food Chain From a Semi-enclosed Marine Coastal Area (Stagnone di Marsala, Sicily, Mediterranean)

Vizzini

Costa

Tramati

et al. 2013

Arch Environ Contam Toxicol

View full text Add to dashboard Cite

Trace element accumulation is particularly important in coastal and transitional environments, which act as contaminant buffers between the continental and marine systems. We compared trace element transfer to the biota in two locations with different open-sea exposures in a semi-enclosed marine coastal area (Stagnone di Marsala, Sicily, Italy) using isotopically reconstructed food chains. Samples of sediment, macroalgae, seagrasses, invertebrates, fish, and bird feathers were sampled in July 2006 and analysed for stable carbon and nitrogen isotopes (d 13 [Pb]). Trophic magnification factors were calculated through the relationships between trace elements and d 15 N in consumers. As and Pb were greater in organic matter sources (sediments and primary producers), whereas Cd and THg were greater in bird feathers. At the food chain level, an insignificant trophic transfer was found for all elements, suggesting biodilution rather than biomagnification. Sediments were more contaminated in the location with lower open-sea exposure. Macroalgae and seagrasses overall mirrored the spatial pattern highlighted in sediments, whereas differences between the two locations became further decreased moving toward higher trophic levels, indicating that trophic transfer of sediment and macrophyte-bound trace elements to the coastal lagoon food chain may be of relatively minor importance.

show abstract

“…Pearson and Rosenberg (1978) consider H. filiformis to be a pioneer species appearing in the second stage of the ecological succession, after the disappearance of Capitella spp. Reizopoulou and Nicolaidou (2004) observed peaks of abundance of both H. filiformis and C. capitata in organically enriched areas. In fact, H. filiformis is also reported as an opportunistic form common in Mediterranean brackish water basins (Koutsoubas et al, 2000;Reizopoulou and Nicolaidou, 2004;Nicoletti et al, 2006) and in polluted environments (Holte, 1998).…”

Section: Discussionmentioning

confidence: 81%

“…Reizopoulou and Nicolaidou (2004) observed peaks of abundance of both H. filiformis and C. capitata in organically enriched areas. In fact, H. filiformis is also reported as an opportunistic form common in Mediterranean brackish water basins (Koutsoubas et al, 2000;Reizopoulou and Nicolaidou, 2004;Nicoletti et al, 2006) and in polluted environments (Holte, 1998). Colonisation of the lake by H. filiformis may have been favoured by the change in hydrological conditions after the opening of the southern channel.…”

Section: Discussionmentioning

confidence: 81%

“…The local accumulation and decomposition of Posidonia oceanica detritus incoming from the open sea could have caused the low and variable oxygen saturation observed at Site D in July. Reizopoulou and Nicolaidou (2004) observed that in the Papas Lagoon (W Greece), during dystrophic periods, large decomposing Ulva rigida beds led to an abrupt decrease in oxygen concentration, causing azoic conditions in the affected areas. In our case, the decomposing vegetal biomass in the sediment seemed to affect polychaetes, possibly due to their burrowing life style.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Benthic assemblage of Acquatina Lake (South Adriatic Sea): present state and long-term faunistic changes

2010

View full text Add to dashboard Cite

SUMMARY: A study on macrobenthos of Acquatina Lake, a transitional water basin, was performed in order to evaluate its present status and detect any faunistic changes after the digging of a larger connection with the open sea that has improved the hydrological conditions. A total of 5029 individuals belonging to 51 taxa were collected. Molluscs were taxonomically the richest group, but polychaetes were the most abundant due to the high abundance of Heteromastus filiformis. The sites representing two extremes of the biotope in terms of both the salinity gradient and the distance from the sea had the most variable assemblages, while the central area showed a more homogeneous faunal composition. This was due to the different distribution patterns of molluscs and polychaetes: the former seemed to be more influenced by salinity, while the latter were also influenced by oxygen saturation. The comparison between the present and historical data showed the increase of polychaete diversity, the change in the dominant taxa (from Naineris laevigata to H. filiformis) and the disappearance of some opportunistic forms (e.g. Capitella capitata). Changes in the salinity gradient and the improvement of trophic conditions, possibly enhanced by biotic interactions (e.g. possible competition between the two capitellids H. filiformis and Notomastus latericeus), may have led the polychaete assemblage towards the new equilibrium.Keywords: DISTLM-forward, Polychaeta, Mollusca, brackish-water, soft bottom, Mediterranean Sea, human management. RESUMEN: Agrupación bentónica del lago Acquatina (Adriático sur): estado actual y a largo plazo de los cambios faunísticos. -Un estudio del macrobentos del lago Acquatina, una cuenca de agua de transición, fue realizado para evaluar su estatus actual y detectar posibles cambios faunísticos después de una intervención humana reciente. Un total de 5029 individuos pertenecientes a 51 taxa fueron recolectados. Los moluscos fueron el grupo más rico, pero los poliquetos fueron el grupo numéricamente dominante debido a la abundancia de Heteromastus filiformis. Las zonas que representan los dos biotopos más extremos, en términos de salinidad y confinamiento, fueron las más variables en comparación con las áreas centrales más homogéneas. Este patrón se debe a la diferente distribución entre moluscos y poliquetos: los primeros parecían estar más influenciados por la salinidad, mientras que los segundos están influenciados, además, por los niveles de saturación de oxígeno. La comparación entre la composición actual de poliquetos y los datos históricos muestran un incremento de la diversidad, el cambio de las especies dominantes (de Naineris laevigata a H. filiformis), y la desaparición de algunas formas oportunistas (por ejemplo Capitella capitata). Cambios en el gradiente de salinidad y la mejora de las condiciones tróficas podrían dirigir la agrupación de poliquetos hacia un nuevo equilibrio, sin embargo algunas interacciones bióticas (por ejemplo la posible competición entre los capitéllidos H. filiformis y...

show abstract

Benthic diversity of coastal brackish-water lagoons in western Greece

Cited by 107 publications

References 13 publications

Lack of temporal variability in the benthos of a coastal brackish water lagoon in Greece

Lack of temporal variability in the benthos of a coastal brackish water lagoon in Greece

Trophic Transfer of Trace Elements in an Isotopically Constructed Food Chain From a Semi-enclosed Marine Coastal Area (Stagnone di Marsala, Sicily, Mediterranean)

Benthic assemblage of Acquatina Lake (South Adriatic Sea): present state and long-term faunistic changes

Contact Info

Product

Resources

About