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Fig. 1 in Fishers' ecological knowledge of smalleye hammerhead, Sphyrna tudes , in a tropical estuary
Fig. 1. Location of Cassurubá Extractive Reserve, Abrolhos Bank, eastern Brazil. Numbers represent fishing villages where fishers were interviewed. Caravelas city: 1- Barra (n= 16), 2- Massangano (n = 8), 3- Calabouço (n = 6), 4- Tapera (n = 8), 5- Caribê (n = 12). Nova Viçosa city: 6- Peróba (n = 12), 7- Barra Velha (n= 11) and 8- Tranqueira (n= 6).
Fig. 3 in Fishers' ecological knowledge of smalleye hammerhead, Sphyrna tudes , in a tropical estuary
Fig. 3. (a) Number of fishers that had already caught Sphyrna tudes, distributed over fishers' generations on Abrolhos Bank; (b) Mean weight (+95% CI) of Sphyrna tudes caught over three generations of fishers. Different letters above bars indicate significant differences (p <0.05).
Fig. 4 in Fishers' ecological knowledge of smalleye hammerhead, Sphyrna tudes , in a tropical estuary
Fig. 4. Food items consumed by Sphyrna tudes according to fishers´ local ecological knowledge of Cassurubá Extractive Reserve, eastern Brazil.
FIGURE 4 in Building a baseline: a survey of the composition and distribution of the ichthyofauna of Guanabara Bay, a deeply impacted estuary
FIGURE 4 | Distribution of absolute richness (A) and species density (B) per km2 at Guanabara Bay, Rio de Janeiro, Brazil.
FIGURE 3 in Building a baseline: a survey of the composition and distribution of the ichthyofauna of Guanabara Bay, a deeply impacted estuary
FIGURE 3 | Ichthyofauna rates found for Guanabara Bay, Rio de Janeiro, Brazil. A. As a whole and for the B. Lower, C. Middle, and D. Upper estuaries separately, where "mg" corresponds to the number of extra samples needed to reach a "g" for estimated richness. When the line touches the x axis (mg = 0), the "g" values are reached by our study, that is, the value in which extra collections are not necessary.
FIGURE 2 in Building a baseline: a survey of the composition and distribution of the ichthyofauna of Guanabara Bay, a deeply impacted estuary
FIGURE 2 | Rarefaction curves for Guanabara Bay's ichthyofauna richness, Rio de Janeiro, Brazil. A. For the bay as a whole, and for the estuary compartments separately: B. Lower estuary, C. Middle estuary and D. Upper estuary.
FIGURE 1 in Building a baseline: a survey of the composition and distribution of the ichthyofauna of Guanabara Bay, a deeply impacted estuary
FIGURE 1 | Guanabara Bay map, Rio de Janeiro, divided into five km x five km quadrants. Different shades of blue indicate which estuary compartment (upper, middle or lower) the quadrant belongs to.
FIGURE 4 in Environmental influences on the ichthyoplankton in hypersaline estuaries located in a Semiarid Northeastern Brazilian coast
FIGURE 4 | A. Percentage of larval stages of ichthyoplankton in each of zones of Tubarão River estuary (Z1: Lower, Z2: Middle, Z3: Upper) in their periods of dry (TD) and rainy (TR); B. Percentage of ichthyoplankton larval stages in each of Casqueira River estuary zones (Z1: Lower, Z2: Middle, Z3: Upper) during their dry (CD) and rainy (CR) periods.
FIGURE 6 in Environmental influences on the ichthyoplankton in hypersaline estuaries located in a Semiarid Northeastern Brazilian coast
FIGURE 6 | Percentage contribution of species in Casqueira River estuary (Z1: Lower, Z2: Middle, Z3: Upper) zones in their periods of dry (CD) and rainy (CR). Yol = Vitelline larval; Pre = Preflexion; Fle = Flexion; Pos = Postflexion.
FIGURE 5 in Environmental influences on the ichthyoplankton in hypersaline estuaries located in a Semiarid Northeastern Brazilian coast
FIGURE 5 | Percentage contribution of species in Tubarão River estuary (Z1: Lower, Z2: Middle, Z3: Upper) in their periods of dry (TD) and rainy (TR). Yol = Vitelline larval; Pre = Pre-flexion; Fle = Flexion; Pos = Post-flexion.
FIGURE 3 in Environmental influences on the ichthyoplankton in hypersaline estuaries located in a Semiarid Northeastern Brazilian coast
FIGURE 3 | Distance-based redundancy analysis (dbRDA) showing distribution of eggs and larvae by influence of environmental parameters on A. Tubarão (T) and B. Casqueira river estuaries (C) during seasons (D = dry and R = rainy) and zones (Z1, Z2, Z3).
FIGURE 1 in Environmental influences on the ichthyoplankton in hypersaline estuaries located in a Semiarid Northeastern Brazilian coast
FIGURE 1 | Map of the two study areas, Tubarão (1) and Casqueira (2) river estuaries. The insert map indicates the sampling sites (zones) in both estuaries: Z1 = Lower zone, Z2 = Middle zone and Z3 = Upper zone.
FIGURE 2 in Environmental influences on the ichthyoplankton in hypersaline estuaries located in a Semiarid Northeastern Brazilian coast
FIGURE 2 | Box Plots of larvae (Ind * 100-3) and egg (Ind * 100- 3) densities in three zones of each of estuaries (Tubarão and Casqueira rivers) during their dry and rainy periods. Different letters indicate significant differences (P <0.05).
FIGURE 4 in Fish biodiversity of a tropical estuary under severe anthropic pressure (Doce River, Brazil)
FIGURE 4 | Main human-driven impacts after the 19th century and their consequences on the Doce River basin. Photos by A. Villela (Exotic species) and E. Nascimento (Mining dam collapse); the other pictures belong to the public domain (Tab. S2).
FIGURE 2 in Fish biodiversity of a tropical estuary under severe anthropic pressure (Doce River, Brazil)
FIGURE 2 | Number of species, genera and families for fish orders in the Doce River estuary. The following orders were represented by a single species and were omitted in the figure: Anguilliformes, Atheriniformes, Aulopiformes, Beloniformes, Blenniiformes, Centrarchiformes, Cyprinodontiformes, Elopiformes, Scombriformes, Spariformes, Symbranchiformes and Syngnathiformes (illustrative taxa images from Phylopic.org).
FIGURE 1 in Fish biodiversity of a tropical estuary under severe anthropic pressure (Doce River, Brazil)
FIGURE 1 | Location of the study area in Eastern Brazil with some features detailed: A. Sandy banks; B. Marginal creek; and C. Main channel of the Doce River estuary (DRE). Photos: Helder C. Guabiroba (A; C), Alexandre Villela (B). Aerial image source: (GEOBASES, 2015).
FIGURE 3 in Fish biodiversity of a tropical estuary under severe anthropic pressure (Doce River, Brazil)
FIGURE 3 | Examples of fishes recorded for the first time in the Doce River estuary. A. Cichlasoma dimerus; B. Pygocentrus nattereri; C. Coptodon rendalli; D. Butis koilomatodon; E. Lutjanus cyanopterus; F. Genidens barbus; G. Pimelodus maculatus; H. Catathyridium garmani. Photos: Helder C. Guabiroba (A, B, C, E, H), Flávio T. Szablak (D, F, G).
Figure 3. – A in Macrozoobenthic resources use by teleosts in the Gironde estuary
Figure 3. – A: Dendrogram obtained from cluster analysis of the macrozoobenthic composition in the Gironde estuary (based on numerical percentages (%N) according to Bray-Curtis similarity); the red line indicates the threshold used by SIMPROF to separate the groups. B: Contributions (%)of the discriminating taxa in each macrozoobenthic assemblage of the Gironde estuary identified by SIMPROF determined using similarity percentage analysis (SIMPER). Cut off for low contributions: 90%.
Figure 7 in Macrozoobenthic resources use by teleosts in the Gironde estuary
Figure 7. – Ontogenetic variation of diet of Pomatoschistus minutus, Dicentrarchus punctatus, Pomatoschistus microps, Platichthys flesus and Solea solea based on numerical percentages %N of the prey phylum consumed. Dendrograms on the right were obtained from cluster analysis of the diet composition (%N) of each size class according to Bray-Curtis similarity. The red lines indicate the thresholds used by SIMPROF to separate the size classes with similarities in diet. 'TL' means total length.
Figure 2 in Macrozoobenthic resources use by teleosts in the Gironde estuary
Figure 2. – Total biomass (A) and total density (B) of macrozoobenthos species that occurred at each sampling station in July, going from downstream (left of the plot) to upstream (right of the plot) of the Gironde estuary. The colours of the diamonds at the top of each station value correspond to the macrozoobenthic assemblage they belong (Fig. 3B). See Fig. 1 for location of the stations.
ScienceDex guides
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