Do mud deposition events on sandy beaches affect surf zone ichthyofauna? A southern Brazilian case study

Mont’Alverne, Renata; Moraes, Leonardo Evangelista; Rodrigues, Fábio Lameiro; Vieira, João Paes

doi:10.1016/j.ecss.2012.03.017

Cited by 8 publications

(6 citation statements)

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“…This pattern seems to be similar to several other surf zones around the world (Robertson & Lenanton, 1984; Gibson et al , 1993; Suda et al , 2002; Inoue et al , 2008; Selleslagh & Amara, 2008). In fact, surf zones are considered nursery area, transit routes, and feeding grounds for several species (Lasiak, 1986; Santos & Nash, 1995; Layman, 2000; McLachlan & Brown, 2006; Nakane et al , 2011), and dominated mainly by small-sized juvenile fishes (Nanami & Endo, 2007; Lima & Vieira, 2009; Mont'Alverne et al , 2012).…”

Section: Discussionmentioning

confidence: 99%

Surf zone fish abundance and diversity at two sandy beaches separated by long rocky jetties

Rodrigues

Vieira

2012

J. Mar. Biol. Ass.

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In this work, we evaluated the influence of long rocky jetties (~5 km) on fish abundance and diversity between sheltered and exposed marine sandy beaches. We also described and compared the fish community structure and investigated the relationships between environmental variables and fish assemblages. Fish were collected monthly with a beach seine net from May 2001 to May 2002 at the Cassino and Mar Grosso beaches. Twenty-nine taxa were caught and the fish assemblage showed similar composition between beaches (Sj = 62.1%; %Min = 52.3%), with 18 species in common. Most of the fish were juveniles, mainly young-of-the-year with sizes ≤60 mm total length. Eight species (Trachinotus marginatus, Mugil liza, Brevoortia pectinata, Menticirrhus littoralis, Menticirrhus americanus, Odontesthes argentinensis and Oncopterus darwinii) were the most abundant, accounting for 95.6% of the total catch. At both beaches, only T. marginatus, M. liza and M. littoralis were frequent and abundant, but with some differences in their relative abundance. The canonical correspondence analysis results showed that temperature had the highest correlation with fish abundance. Seasonal changes in fish assemblage structure were evident, with a greater species diversity and abundance in the spring and summer. The overall results indicate that the presence of jetties had no effect on fish assemblages of adjacent sandy beaches. Moreover, differences between beaches were related to some species abundance and not to differences in the number and composition of species between beaches.

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Section: Discussionmentioning

confidence: 99%

Surf zone fish abundance and diversity at two sandy beaches separated by long rocky jetties

Rodrigues

Vieira

2012

J. Mar. Biol. Ass.

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“…The surf-zone and shallow-water of estuaries of southern Brazil are mostly dominated by juveniles of Mugilidae (<50 mm total length; Vieira et al, 2010;Mont'Alverne et al, 2012). In the TRE and AC, juveniles of two species of Mugil represented c.76% of the total catch in both environments sampled.…”

Section: Discussionmentioning

confidence: 99%

“…In south Brazilian coastal areas the seasonal variations of temperature and spatial oscillation of salinity, among other factors, provide intra-and inter-annual variability that is associated with the occurrence of larger scale climatic phenomena (Garcia et al, 2004(Garcia et al, , 2012Moraes et al, 2012;Martins et al, 2015). Temperature plays an important role in seasonal migrations of some species, having a direct effect on the metabolic, reproductive, and abundance processes of the fish fauna (Mont'Alverne et al, 2012;Moraes et al, 2012;Cattani et al, 2016). Thus, recruitment of young fishes determines the composition and the seasonal variations in abundance of shallow-water species (Mont'Alverne et al, 2012;Moraes et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

“…Temperature plays an important role in seasonal migrations of some species, having a direct effect on the metabolic, reproductive, and abundance processes of the fish fauna (Mont'Alverne et al, 2012;Moraes et al, 2012;Cattani et al, 2016). Thus, recruitment of young fishes determines the composition and the seasonal variations in abundance of shallow-water species (Mont'Alverne et al, 2012;Moraes et al, 2012). Although temperature determines seasonal variation and enhances fish species diversity at both the TRE and AC, salinity was responsible for spatial distribution between these two environments.…”

Section: Discussionmentioning

confidence: 99%

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Long-Term Spatiotemporal Variation in the Juvenile Fish Assemblage of the Tramandaí River Estuary (29°S) and Adjacent Coast in Southern Brazil

et al. 2019

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We evaluated connectivity, resiliency, and spatiotemporal variation in fish associations between the Tramandal River estuary (TRE) and the adjacent coast (AC). This was based on intermittent and seasonal data covering a discontinuous 21-year period (1995 to 2016) obtained using a standard beach seine with replicate samples collected at several points. In the TRE (405 samples; 42,987 individuals) 55 species were captured. In the AC (297 samples; 54,295 individuals) 41 species were captured. After data standardization the expected richness of the TRE [E(S) = 18.2] was significantly greater (P < 0.05) than that of the AC [E(S) = 14.4]. The fish association structure and distribution patterns in TRE and AC were dynamic and interconnected but quite different in terms of species composition, especially due to the influence of local salinity. The TRE association was richer in a number of species but numerically dominated by marine estuarine-dependent juveniles. The AC association was represented by a few typical marine species in addition to a couple of estuarine-related transient species who used the surf-zone as a passageway to enter the estuary. Even if there was a higher percentage of common species reported (30 out of 66), the monthly average Jaccard index of similarity (I J = 28%) and the monthly average percent similarity index (I PS = 30%) were low, suggesting that the shallow water functional connectivity between AC and TRE was represented by few species that occur equally in abundance in both environments. Trachinotus marginatus and Mugil liza numerically dominated in the AC and M. liza, Mugil curema, and Atherinella brasiliensis at TRE. Juvenile M liza and M curema added up to >70% of the total individuals sampled in both environments. General linearized models (GLM) revealed that diversity was not influenced by interannual variations, evidencing that juvenile fish assemblage of AC and TRE are resilient through the years. Standardized beach samples are able to reveal long-term fluctuation in shallow estuarine fish communities but without an apparent loss in species composition, richness, and relative total abundance. The only observed interdecadal trend was the reduction in abundance of juvenile M. liza that seemed to parallel the reduction in abundance of the adult fishing stocks in southern Brazil.

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“…Due to this large flow and consequent reduction of salinity, along with the contribution of fine sediments in suspension that settled in the marine adjacent region (EMA) (also reported by Calliari et al ., 2003), the conditions of the region resembled a region suitable for larval settlement (similar to fishes, e.g. Mont'Alverne et al ., 2012). As settlement of blue crab recruits depends on the spawning site and the hydrodynamics of the ocean and estuary, in combination with winds, that drive the entrance of the post-larvae to the nursery areas (Etherington & Eggleston, 2003), these unusual conditions in the adjacent marine areas might be suitable for larval recruitment.…”

Section: Discussionmentioning

confidence: 99%

Habitat use in different life and moulting stages of Callinectes sapidus (Decapoda, Portunidae) in South Brazilian estuarine and marine environments

et al. 2019

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The blue crab Callinectes sapidus is an important ecological and commercial species. It plays a fundamental role in the structure and function of coastal benthic food webs, with global catches of ~74,357 tons. This is the most exploited portunid species in Brazil. However, few studies about the ecology and population dynamics of C. sapidus have been published. This study aimed to analyse the preferred areas for the spatial distribution of juveniles and moulting individuals of C. sapidus in shallow areas of the Patos Lagoon estuary and the adjacent marine reproductive area, and their relation to water and sediment characteristics. Juveniles and moulting individuals preferred the embayment of the upper estuary, where the sediments are finer, with higher contents of organic matter and the presence of submerged vegetation. There was also a temporal variability in the abundance of juvenile size classes, with two marked increments of smaller individuals: (1) in late spring and summer and (2) in winter, indicating two recruitment peaks. Unusual environmental conditions in the summer of the first year, with an increase of fine sediments and organic matter, combined with low salinities in the adjacent marine area, allowed recruitment of individuals there. We suggest better attention to the embayment around the Marinheiros Island (considered here as upper estuary) for management and protection measures due to the overlapping of recruitment preferences of the blue crab, pink shrimp and fish species in this area.

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Do mud deposition events on sandy beaches affect surf zone ichthyofauna? A southern Brazilian case study

Cited by 8 publications

References 50 publications

Surf zone fish abundance and diversity at two sandy beaches separated by long rocky jetties

Surf zone fish abundance and diversity at two sandy beaches separated by long rocky jetties

Long-Term Spatiotemporal Variation in the Juvenile Fish Assemblage of the Tramandaí River Estuary (29°S) and Adjacent Coast in Southern Brazil

Habitat use in different life and moulting stages of Callinectes sapidus (Decapoda, Portunidae) in South Brazilian estuarine and marine environments

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