Seasonal and spatial variation of mesozooplankton biomass in Ushuaia and Golondrina bays (Beagle Channel, Argentina))

Biancalana, Florencia; Diodato, Soledad; Hoffmeyer, Mónica S.

doi:10.1590/s1679-87592012000100010

Cited by 14 publications

(2 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Descriptive ecological information such as the composition and abundance of the mesozooplankton community of the UB was previously provided by Fernández-Severini and Hoffmeyer (2005) and Biancalana et al (2007). Only two works studied the seasonal dynamics of the mesozooplankton biomass and metazooplankton related to temperature, salinity and chlorophyll a in the UB (Biancalana et al 2012b;Aguirre et al 2011), but there are no studies in the bay on the evaluation of the impact by different sources of variation (e.g. natural and anthropogenic derived) on the mesozooplantkon community and how it would respond seasonally and spatially.…”

Section: Introductionmentioning

confidence: 99%

Mesozooplankton assemblages and their relationship with environmental variables: a study case in a disturbed bay (Beagle Channel, Argentina)

Biancalana

Dutto

Berasategui

et al. 2014

Environ Monit Assess

Self Cite

View full text Add to dashboard Cite

This study focused on the seasonal and spatial analysis of the mesozooplankton community in a human-impacted subantarctic bay in Argentina and aimed to detect assemblages associated with environmental variability. Mesozooplankton samples and environmental data were obtained in the Ushuaia Bay (UB) seasonally, from August 2004 to June 2005, and spatially, from coastal (more polluted), middle (less influenced) and open sea water (free polluted) sampling stations. Remarkable seasonal changes on the mesozooplankton community were observed. Nitrogenated nutrients, chlorophyll a, salinity and temperature were the prevailing environmental conditions likely associated with the different mesozooplankton assemblages found in the bay. The copepods Eurytemora americana, Acartia tonsa, Podon leuckarti and Nematoda were particularly observed on the northwest coast of the bay, characterized by the highest level of urban pollution, eutrophicated by sewage and freshwater inputs from the Encerrada Bay which is connected to it. The stations situated in the northeast area, mostly influenced by freshwater input from rivers and glacier melting, showed low mesozooplankton abundances and an important contribution of adventitious plankton. The copepods Ctenocalanus citer, Clausocalanus brevipes and Drepanopus forcipatus were mostly observed at the stations located near the Beagle Channel, characterized by open sea and free polluted waters. Our findings suggest that the variations observed in the mesozooplankton assemblages in the UB seem to be modulated by environmental variables associated with the anthropogenic influence, clearly detected on the coast of the bay. Certain opportunistic species such as A. tonsa and E. americana could be postulated as potential bioindicators of water quality in subantarctic coastal ecosystems.

show abstract

Section: Introductionmentioning

confidence: 99%

Mesozooplankton assemblages and their relationship with environmental variables: a study case in a disturbed bay (Beagle Channel, Argentina)

Biancalana

Dutto

Berasategui

et al. 2014

Environ Monit Assess

Self Cite

View full text Add to dashboard Cite

show abstract

“…The studies of Biancalana et al (2012) showed that the enrichment of the water by an increase of nutrients indirectly contributed to modulate the spatial–seasonal distribution patterns of mesozooplankton.…”

Section: Introductionmentioning

confidence: 99%

The planktonic ciliate community and its relationship with the environmental conditions and water quality in two bays of the Beagle Channel, Argentina

Cao

Abbate

Pettigrosso³

et al. 2013

J. Mar. Biol. Ass.

View full text Add to dashboard Cite

The relationship between the ciliate community and the environmental variables in Ushuaia and Golondrina bays (54879 ′ S 68822 ′ W and 54885 ′ S 68836 ′ W, respectively) in the Beagle Channel, Argentina was investigated. The study was performed in three zones within the bays, previously delimited on the basis of their water quality. The most perturbed sites were located inshore. In order to analyse the contribution of each species to the similarity or dissimilarity between zones, similarity percentages analysis was undertaken using the Bray -Curtis similarity index. The variations in species composition and dominance in the selected zones were examined by the abundance-biomass comparison plot. We also studied the relationship between environmental and ciliates variability. The ciliate community comprised a total of 43 species belonging to 15 genera. Ciliate abundance and biomass varied temporally and spatially. A more diverse community dominated by small and opportunistic species tolerant to environmental changes was found in the most perturbed zone, while in the less stressed zone the community comprised bigger species, probably adapted to more stable environmental conditions. A community comprising species from both zones was found in a transitional area. We conclude that the structure of the community varied closely with environmental conditions.

show abstract

Mesozooplankton Structure and Seasonal Dynamics in Three Coastal Systems of Argentina: Bahía Blanca Estuary, Pirámide Bay, and Ushuaia Bay

Berasategui

Abbate

D'agostino

et al. 2018

Plankton Ecology of the Southwestern Atlantic

View full text Add to dashboard Cite

Seasonal and spatial variation of mesozooplankton biomass in Ushuaia and Golondrina bays (Beagle Channel, Argentina))

Cited by 14 publications

References 19 publications

Mesozooplankton assemblages and their relationship with environmental variables: a study case in a disturbed bay (Beagle Channel, Argentina)

Mesozooplankton assemblages and their relationship with environmental variables: a study case in a disturbed bay (Beagle Channel, Argentina)

The planktonic ciliate community and its relationship with the environmental conditions and water quality in two bays of the Beagle Channel, Argentina

Mesozooplankton Structure and Seasonal Dynamics in Three Coastal Systems of Argentina: Bahía Blanca Estuary, Pirámide Bay, and Ushuaia Bay

Contact Info

Product

Resources

About