Habitat features not water variables explain most of fish assemblages use of sandy beaches in a Brazilian eutrophic bay

Fish assemblages from two sandy beaches in the lower Purus river (Amazonas, Brazil) were compared. Four sampling groups were represented by: day and night samples in sandy beach inside the Reserva Biológica de Abufari (biological reserve) and day and night samples in the Reserva de Desenvolvimento Sustentável Piagaçu-Purus (sustainable development reserve). Samples were collected during low water levels (November) in 2007. The fish were sampled by means of seines with mesh size of 5 mm between opposing knots, 11 m long and 6 m wide. A total of 112 fish species belonging to nine orders and 27 families was captured. The vast majority of the dominant forms consisted of small fishes (< 100 mm SL) or juveniles. Samples collected in Abufari at night presented more specimens (3,540), higher richness (84 spp.), larger total biomass (76,614 g) and higher diversity (H'= 2.57) than the other groups. The composition of fish assemblages was significantly different among all analyzed groups (ANOSIM, p < 0.0001, R= 0.71). NMDS analysis also clustered all species in four distinct groups according to species composition per period and site. SIMPER analyses showed that 80% of variation of species composition among the groups examined was due to 12 species. However, fish composition did not show any correlation with the abiotic factors examined. Different levels of use in both reserves may explain differences in fish composition.

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Fish species richness in shallow environments of the Island of Santa Catarina, Southern Brazil

Revista CEPSUL - Biodiversidade e Conservação Marinha ◽

10.37002/revistacepsul.vol7.729e20018001 ◽

2018 ◽

Vol 7 ◽

pp. e20018001

Author(s):

André Pereira Cattani ◽

Olímpio Rafael Cardoso ◽

Gisela Costa Ribeiro ◽

Marcelo Soeth ◽

Maurício Hostim-Silva ◽

...

Keyword(s):

Species Richness ◽

Fish Assemblages ◽

Abiotic Factors ◽

Fish Fauna ◽

Sandy Beaches ◽

Mean Value ◽

Taxonomic Structure ◽

Rocky Shores ◽

Santa Catarina ◽

Mean Values

The Island of Santa Catarina is a mosaic of ecosystems of great importance for fish fauna, highlighting the presence, in the same island, of estuaries, lagoons, mangroves, rocky shores and sandy beaches. This study aimed to compare, based on species richness, fish assemblages between different ecosystems. Between 1981 and 2011, there were collected a total of 165 taxa of fish, distributed in 54 families, in six sampling sites, using casting net, sweep net, beach trawl and gill net. According to the species accumulation curve, that show the increase of the number of different species with the increase of the number of samples, for all sites, the curves of species recorded followed patterns similar to curves obtained by the Jacknife index. However, the number of species has stabilized only for samples collected in Saco dos Limões, Itacorubi Mangrove and Ratones Mangrove. Comparing the mean values of richness between sites, the highest mean value was found in Saco dos Limões, followed by Índio Beach, Conceição Lagoon, North Bay , Itacorubi and Ratones Mangroves. Using the list of species as reference, despite the differences in abundance and richness between sites, the taxonomic structure is similar between sampling sites, which supports the hypothesis that the assemblages are occurring in all sites and the differences are primarily related to the patterns of reproduction and recruitment of species and secondarily influenced by abiotic factors, especially the temperature and salinity.

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Rockpool ichthyofauna of Amazon coastal zone: spatial and environmental effects on species distribution

Marine and Freshwater Research ◽

10.1071/mf16275 ◽

2017 ◽

Vol 68 (6) ◽

pp. 1137 ◽

Cited By ~ 1

Author(s):

Tiago Octavio Begot ◽

Bruno Eleres Soares ◽

Leandro Juen ◽

Luciano Fogaça de Assis Montag

Keyword(s):

Community Structure ◽

Coastal Zone ◽

Intertidal Zone ◽

Fish Assemblages ◽

Sandy Beaches ◽

Tidal Range ◽

Spatial Variables ◽

Β Diversity ◽

Principal Factors

The present study analysed the effects of environmental and spatial variables on the structure of fish communities inhabiting rockpools in the Amazon coastal zone to test the hypothesis that environmental characteristics and spatial distribution are the principal factors responsible for community structure. In all, 80 pools were sampled, 40 in the rainy season and 40 in the dry season. The pools were located on five sandy beaches of the Amazon coast. In all, 1303 fish were collected, representing 20 taxa distributed in nine orders and 14 families. The abundance and occurrence of different taxa varied considerably, as did β diversity, ranging from identical to completely different communities. Differences were found in taxa abundance between seasons (rainy and dry) and beach locality. However, for species richness, only differences between seasons were found, showing the effects of spatial and environmental variation in the structure of fish assemblages. This corroborates both spatial and environmental hypotheses of community structure, and reinforces the role of the extreme dynamic conditions, such as tidal range and influence of the rivers that flow into this estuary, in the intertidal zone fish on the Amazon coast.

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Among- and within-tributary responses of riverine fish assemblages to habitat featuresContribution of the Group for Interuniversity Research in Limnology (GRIL). We dedicate this paper to the memory of our colleague Réjean Fortin.

Canadian Journal of Fisheries and Aquatic Sciences ◽

10.1139/f08-060 ◽

2008 ◽

Vol 65 (7) ◽

pp. 1379-1393 ◽

Cited By ~ 4

Author(s):

Yorick Reyjol ◽

Marco A. Rodríguez ◽

Nathalie Dubuc ◽

Pierre Magnan ◽

Réjean Fortin

Keyword(s):

Environmental Variables ◽

Fish Assemblages ◽

Environmental Gradients ◽

Assemblage Structure ◽

Foraging Efficiency ◽

Habitat Features ◽

Ottawa River ◽

Mixed Regression ◽

Riverine Fish ◽

Predictable Variation

We quantified fish abundance and environmental variables at 170 sites distributed among 11 tributaries of the Ottawa River, Quebec, Canada, to assess the relative importance of among- and within-tributary variation in riverine fish assemblages. Additionally, we determined (i) which environmental variables were most strongly associated with each type of variation and (ii) whether ecomorphological traits in fish assemblages were predictably related to environmental gradients. Partitioning of variation by means of partial ordination indicated that assemblages were less variable among (38.7% of the total variation) than within (61.3%) tributaries. Water transparency singly accounted for 33.3% of the variation among tributaries, whereas macrophyte cover and river width jointly accounted for 8.3% of the variation within tributaries. These results suggests that differences in habitat features among tributaries may account for a substantial fraction of the predictable variation in assemblage structure at the watershed scale, an aspect not emphasized in previous studies of riverine fish assemblages. Mixed regression analyses relating ecomorphological traits to environmental variables showed that the environmental variables most strongly associated with assemblage structure were significantly related to traits associated with predator avoidance or foraging efficiency.

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The structure of shallow water fish assemblages in sandy beaches of a tropical bay in the southwestern Atlantic

Ichthyological Research ◽

10.1007/s10228-021-00832-3 ◽

2021 ◽

Author(s):

Samara Macedo Pinto ◽

Cassiano Monteiro-Neto ◽

Elisabete Barbarino ◽

Rafael de Almeida Tubino ◽

Marcus Rodrigues da Costa

Keyword(s):

Shallow Water ◽

Fish Assemblages ◽

Sandy Beaches ◽

Southwestern Atlantic ◽

Water Fish ◽

Tropical Bay

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The response of amphibian communities to fish and habitat features in Mediterranean permanent ponds

Biologia ◽

10.2478/s11756-014-0377-5 ◽

2014 ◽

Vol 69 (6) ◽

Cited By ~ 2

Author(s):

Marco Landi ◽

Sandro Piazzini ◽

Carlo Saveri

Keyword(s):

Fish Species ◽

Aquatic Macrophytes ◽

Linear Models ◽

Fish Assemblages ◽

Central Italy ◽

Amphibian Species ◽

Habitat Features ◽

Almost All ◽

Macrophyte Cover ◽

Amphibian Communities

AbstractGeneralized linear models were used to test the effect of fish, using ponds with and without fish and habitat features as covariates, on richness and abundance of amphibian species. Five fish species and six amphibian species were recorded in 60 permanent ponds located in central Italy. The choice of covariates (macrophyte cover and pond surface area) was made after studying the correlations. The richness of amphibian species was not significantly affected by fish presence or macrophyte cover, in line with previous studies, since almost all the fish species were non-predatory. However, abundance of urodeles (newts) was negatively affected by fish and positively affected by macrophyte cover. Although fish may strongly influence the abundance and composition of amphibian communities, the results indicate that the cover of aquatic macrophytes may increase the available habitat for amphibians and therefore their abundance. Anuran species preferred ponds where fish were present, since both groups preferred larger ponds. Concordance between fish and amphibian species composition was not found by the Mantel and Partial Mantel tests. This indicates that the fish assemblages do not predict which amphibian species occur in the pond.

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Composition and assemblage structure of demersal fish from São Cristóvão beach, Areia Branca, RN

Biota Neotropica ◽

10.1590/s1676-06032012000300012 ◽

2012 ◽

Vol 12 (3) ◽

pp. 108-117 ◽

Cited By ~ 1

Author(s):

Natália Carla Fernandes de Medeiros Dantas ◽

Caroline Vieira Feitosa ◽

Maria Elisabeth de Araújo

Keyword(s):

Sandy Beach ◽

Fish Assemblages ◽

General Pattern ◽

Fish Fauna ◽

Demersal Fish ◽

Sandy Beaches ◽

Assemblage Structure ◽

Northeastern Brazil ◽

Basic Knowledge ◽

Northern Coast

Fish assemblages are an important element of sandy beaches, as they are fundamental for these ecosystems' balance of energy. Descriptions of the structure of fish assemblages in the sandy beaches of northeastern Brazil are scarce; this is especially true for the state of Rio Grande do Norte, which northern coast is poorly studied. This study aimed to identify the fish fauna of São Cristóvão Beach and to determine their assemblage structure. Three trawlings, considered as replicates, were undertaken monthly, in the same day, during 10 minutes each time, parallel to the coastal line, and in the direction of current, from February 2010 to January 2011. To describe the general pattern of the fish assemblage, the abundance, frequency and trophic categories of each species were estimated. On São Cristóvão Beach, 8894 individuals were captured, belonging to 58 species, 48 genera and 28 families. The most abundant and frequent species were Pomadasys corvinaeformis (Steindachner, 1868), Cathorops spixii (Agassiz, 1829), Stellifer rastrifer (Jordan, 1889), Pellona harroweri (Fowler, 1917), Stellifer stellifer (Bloch, 1790), Chirocentrodon bleekerianus (Poey, 1867), Larimus breviceps Cuvier, 1830, Menticirrhus americanus (Linnaeus, 1758)and Conodon nobilis (Linnaeus, 1758). The most abundant trophic category was first order carnivores. The ichthyofauna of São Cristóvão Beach is diversified and the most representative families match those observed in sandy beach ecosystems from other Brazilian regions. The results presented here reflect the basic knowledge necessary to conduct further research in the region.

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

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s0025315412001531 ◽

2012 ◽

Vol 93 (4) ◽

pp. 867-875 ◽

Cited By ~ 21

Author(s):

Fábio Lameiro Rodrigues ◽

João Paes Vieira

Keyword(s):

Fish Assemblage ◽

Surf Zone ◽

Fish Assemblages ◽

Species Abundance ◽

Sandy Beaches ◽

Fish Abundance ◽

Fish Assemblage Structure ◽

Fish Community Structure ◽

Abundance And Diversity ◽

Odontesthes Argentinensis

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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