Estuarine and oceanic influences on copepod abundance and production of a subtropical coastal area

Miyashita, Leonardo Kenji; Júnior, Mauro de Meló; Lopes, Rubens M.

doi:10.1093/plankt/fbp039

Cited by 60 publications

(66 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The high biomass of zooplankton on the inner shelf yearround (Lopes et al, 2006;Miyashita et al, 2009) possibly contributes to the development of dense cnidarian populations in the nearshore stations. The salinities o35 at the inner-shelf stations may restrict most siphonophore species, which are typically oceanic and sensitive to diluted waters (Mackie et al, 1987); M. kochi and N. bijuga are one of the few common and abundant siphonophores in nearshore environments, and they may even be found inside estuaries in salinities down to nearly 20 (Nogueira Júnior, 2012).…”

Section: Discussionmentioning

confidence: 99%

“…These mesoscale oceanic intrusions cause striking alterations in the pelagic environment over the SBB shelf, with important biological consequences; most of the phytoplankton production away from the continental runoff is dependent on input of nutrients from these intrusions (Brandini, 1990;Gaeta and Brandini, 2006); during the intrusions copepod biomass and production are enhanced (Miyashita et al, 2009). Planktonic cnidarians are primarily carnivorous, preying on zooplankton and/or ichthyoplankton at high rates, and commonly impacting fish stocks through competition or direct predation (Mackie et al, 1987;Mills, 1995;Pagès et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Distribution of planktonic cnidarians in response to South Atlantic Central Water intrusion in the South Brazilian Bight

Júnior

Brandini

Codina

2014

Continental Shelf Research

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Distribution of planktonic cnidarians in response to South Atlantic Central Water intrusion in the South Brazilian Bight

Júnior

Brandini

Codina

2014

Continental Shelf Research

View full text Add to dashboard Cite

“…However, high values of abundance have already been recorded for C. americana in nocturnal sampling (Melo et al, 2010;Pessoa et al, 2014). This subgroup also included the Paracalanidae (Acrocalanus longicornis, Calocalanus pavo and Paracalanus aculeatus), a family of great importance in terms of abundance, biomass and daily production, besides being highly adapted to the oligotrophic conditions and having the ability to exploit other forms of food besides the phytoplankton (Miyashita et al, 2009;Melo Júnior et al, 2016). However, in FNA its participation in terms of abudance was low, caused by the selectivity of the plankton net mesh size used (300µm).…”

Section: Functional Features Of the Copepod Communitymentioning

confidence: 97%

Small-scale distribution of the mesozooplankton in a tropical insular system

et al. 2018

View full text Add to dashboard Cite

In the present work, spatial and seasonal fluctuations of the abundance and diversity of mesozooplankton are presented, with special attention being given to copepod assemblages from coastal area of the Fernando de Noronha Archipelago (FNA) (3°50'24''S and 32°24'48''W). Sampling was carried out during the dry and rainy seasons of two consecutive years (July and December 2013) and (June and November 2014). A total of 37 mesozooplankton taxa were recorded, being the copepods the most diversified group (15 taxa). The Subclass Copepoda dominated in both periods sampled, comprising 53% and 86% of the total abundance in the dry and rainy season respectively. The species considered abundant were: Calanopia americana, Undinula vulgaris, Oithona plumifera and Corycaeus speciosus. The rainy season favored a significant increase in the abundance of mesozooplankton and copepods. However, a low value of the Shannon-Wiener diversity index was observed in this same seasonal period. This was explained by the dominance of the species C. americana and U. vulgaris in the studied area. Spatial differences have not been verified. The copepod assemblages was composed mostly by species considered as predator-carnivours of greater importance on the pelagic trophic web, indicators of oligotrophic conditions and components of a major portion of fish food items. Thus, we suggest that a spatially homogeneous mesozooplankton community characterizes the coastal area of Fernando de Noronha Archipelago with variations related mainly to the seasonal factor.

show abstract

“…Clausocalanus furcatus, a small clausocalanid, is one of the dominant calanoid copepods in warm waters globally (e.g., Mazzocchi and Ribera d'Alcalà, 1995;Cornils et al, 2007a;Miyashita et al, 2009;Schnack-Schiel et al, 2010;Siokou-Frangou et al, 2010). This copepod occurs in the epipelagic zone all over the world (Frost and Fleminger, 1968), also in the Mediterranean region (e.g., Siokou-Frangou et al, 2010), and usually dominates zooplankton communities in oligotrophic environments (Schulz, 1986;Mazzocchi and Ribera d'Alcalà, 1995;Webber and Roff, 1995;Cornils et al, 2007a).…”

Section: Discussionmentioning

confidence: 99%

Response of the Calanoid Copepod Clausocalanus furcatus, to Atmospheric Deposition Events: Outcomes from a Mesocosm Study

et al. 2017

View full text Add to dashboard Cite

Atmospheric deposition is assumed to stimulate heterotrophic processes in highly oligotrophic marine systems, controlling the dynamics and trophic efficiency of planktonic food webs, and is expected to be influenced by climate change. In the course of an 8-day mesocosm experiment, we examined the channeling, of the Saharan dust (SD) and mixed aerosols (A) effects on microplankton up to the copepod trophic level, in the highly oligotrophic Eastern Mediterranean Sea. Based on mesocosms with SD and A treatments, we evaluated the feeding response of the dominant copepod Clausocalanus furcatus every other day. We hypothesized that increased food availability under atmospheric deposition would result in increased copepod ingestion rates, selectivity and production. Overall, no robust pattern of food selection was documented, and daily rations on the prey assemblage of all mesocosms were very low indicating severe food limitation of C. furcatus. Although increased food availability was not true, after few days ingestion of ciliates was maximized, followed by egg production, in both the SD and A treatments, indicating their importance in the diet of this copepod as well as a response of C. furcatus feeding performance. Our results help in understanding the trophic efficiency of marine food webs in ultra-oligotrophic environments under atmospheric deposition. We suggest that future mesocosm research in oligotrophic waters should consider more than one copepod species.

show abstract

Estuarine and oceanic influences on copepod abundance and production of a subtropical coastal area

Cited by 60 publications

References 44 publications

Distribution of planktonic cnidarians in response to South Atlantic Central Water intrusion in the South Brazilian Bight

Distribution of planktonic cnidarians in response to South Atlantic Central Water intrusion in the South Brazilian Bight

Small-scale distribution of the mesozooplankton in a tropical insular system

Response of the Calanoid Copepod Clausocalanus furcatus, to Atmospheric Deposition Events: Outcomes from a Mesocosm Study

Contact Info

Product

Resources

About