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502 results for “lagoons”
Fig. 4 in Population dynamics and predatory impact of the alien jellyfish Aurelia solida (Cnidaria, Scyphozoa) in the Bizerte Lagoon (southwestern Mediterranean Sea) Abstract
Fig. 4: Variation of the diet composition of Aurelia solida in Bizerte Lagoon in (A) 2013 and (B) 2014; (n) number of analyzed specimens.
Fig. 7 in Population dynamics and predatory impact of the alien jellyfish Aurelia solida (Cnidaria, Scyphozoa) in the Bizerte Lagoon (southwestern Mediterranean Sea) Abstract
Fig. 7: Seasonal variation of Aurelia solida (A-B) feeding rate (prey consumed medusae-1) and (C-D) predation impact (% prey standing stock consumed day-1) in Bizerte Lagoon in 2013-2014.
Fig. 3 in Population dynamics and predatory impact of the alien jellyfish Aurelia solida (Cnidaria, Scyphozoa) in the Bizerte Lagoon (southwestern Mediterranean Sea) Abstract
Fig. 3: Seasonal variation of Aurelia solida (A) abundance and (B) bell diameter in Bizerte lagoon between November 2012 and August 2014; white spots: 0 ind.m-3.
Fig. 1 in Population dynamics and predatory impact of the alien jellyfish Aurelia solida (Cnidaria, Scyphozoa) in the Bizerte Lagoon (southwestern Mediterranean Sea) Abstract
Fig. 1: Map of the Mediterranean Sea showing with locations of the sampling station and the transect in the Bizerte Lagoon between November 2012 and August 2014.
Figure 1. A in Survey of the Non-Migratory Birds of the Rock Islands Southern Lagoon World Heritage Site in Palau
Figure 1. A. Map of Palau. B. Map of the island groups of the Rock Islands Southern Lagoon World Heritage Site study area (inset). Our survey included all 10 island groups. Scale marker = 5 km..
Figure 3 in Polychaete diversity in the estuarine habitats of Términos Lagoon, southern Gulf of Mexico
Figure 3. Distribution of the number of species by habitat in Términos Lagoon. (SB: soft bottoms; SG: seagrass beds; M: mangroves).
Fig. 3 in Spatial, seasonal and ontogenetic changes in food resource use by a piscivore fish in two Pantanal lagoons, Brazil
Fig. 3. Diet composition of Plagioscion ternetzi by size class in Sinhá Mariana lagoon (a) and in Chacororé lagoon (b) (EIG: Eigenmannia spp.; PIM: Pimelodella spp.; ROE: Roeboides spp.; PCU: Psectrogaster curviventris; CDO: Curimatella dorsalis; BRA: Brachyhypopomus spp.; SMA: Synbranchus marmoratus; TAR: Tetragonopterus argenteus; HOR: Hemiodus orthonops; LOR: Loricariichthys spp.; SBR: Schizodon borellii; AST: Astyanax spp.; SMG: Serrasalmus marginatus; LEP: Leporinus spp.; OF: other fish; SH: shrimp; INS: insect; FR: fish remains).
Fig. 2 in Spatial, seasonal and ontogenetic changes in food resource use by a piscivore fish in two Pantanal lagoons, Brazil
Fig. 2. Diet composition of Plagioscion ternetzi in the lagoons Sinhá Mariana (a) and Chacororé (b), during the flood and dry periods.
Fig. 4 in Spatial, seasonal and ontogenetic changes in food resource use by a piscivore fish in two Pantanal lagoons, Brazil
Fig. 4. Species abundance curve of fish species at Sinhá Mariana lagoon (a = flood period and b = dry period) and Chacororé lagoon (c = flood period and d = dry period). Species within the rectangle correspond to the ten most abundant in the lagoon, in order of importance; the species out of the rectangle correspond to the most consumed by Plagioscion ternetzi.
Fig. 1 in Spatial, seasonal and ontogenetic changes in food resource use by a piscivore fish in two Pantanal lagoons, Brazil
Fig. 1. Location of the study area in the system of Chacororé-Sinhá and Mariana lagoons, Pantanal Matogrossense, Mato Grosso State, Brazil.
Fig. 3 in The roles of marginal lagoons in the maintenance of genetic diversity in the Brazilian migratory fishes Prochilodus argenteus and P. costatus
Fig. 3. Dendrogram representing the chord genetic distance among sampling groups of Prochilodus costatus. ABAr = rio Abaeté at rainy season; PAR = rio Paracatu lagoons; SFR = rio São Francisco lagoons; TMDd = Três Marias Dam at dry season; TMDr = Três Marias Dam at rainy season.
Fig. 2 in The roles of marginal lagoons in the maintenance of genetic diversity in the Brazilian migratory fishes Prochilodus argenteus and P. costatus
Fig. 2. Dendrogram representing the chord genetic distance among sampling groups of Prochilodus argenteus. ABAr = rio Abaeté at rainy season; CAR = rio Carinhanha lagoons; JEQ = rio Jequitaí lagoons; PAR = rio Paracatu lagoons; SFR = rio São Francisco lagoons; URU = rio Urucuia lagoons; VEL = rio das Velhas lagoons; TMDd = Três Marias Dam at dry season; TMDr = Três Marias Dam at rainy season.
Fig. 1 in The roles of marginal lagoons in the maintenance of genetic diversity in the Brazilian migratory fishes Prochilodus argenteus and P. costatus
Fig. 1. Map showing the central portion of the rio São Francisco basin and the distribution of the samples of Prochilodus argenteus (yellow) and of P. costatus (black). The circles represent marginal lagoons from tributaries, squares represent marginal lagoons from the rio São Francisco, and triangles represent places in the mainstream rio São Francisco in the Três Marias region. ABA = rio Abaeté; CAR = rio Carinhanha lagoons; JEQ = rio Jequitaí lagoons; PAR = rio Paracatu lagoons; SFR = rio São Francisco lagoons; URU = rio Urucuia lagoons; VEL = rio das Velhas lagoons; TMD = Três Marias Dam.
FIGURE 6 in Bioerosion traces on the Campanian turtle remains: New data from the lagoonal deposits of the Quseir Formation, Kharga Oasis, Egypt
FIGURE 6. Palaeoecology and post-mortem stages of the three turtle-bearing horizons in the Qarn Ganah area, Kharga Oasis, Egypt. (A) A sketch showing the proposed life of side-necked turtle (Bothremydidae) living in small isolated ponds during the Campanian time. (B‒D) A proposed model for the formation of the three horizons of turtle concentrations.
FIGURE 5. A in Bioerosion traces on the Campanian turtle remains: New data from the lagoonal deposits of the Quseir Formation, Kharga Oasis, Egypt
FIGURE 5. A sketch showing bioerosion traces colonising the turtle bones from the Campanian of the Hindaw Member (the Quseir Formation) in the Qarn Ganah area, Kharga Oasis, Egypt (1. Nihilichnus nihilicus, 2. Karethraichnus lakkos, 3. Cubiculum ornatus, 4. Cubiculum inornatus, 5. Osteocallis mandibulus, 6. Radulichnus inopinatus, 7. Osteichnus ossiobontum, 8. Osedacoides jurassicus, 9. Sulculites bellus, and 10. Machichnus?bohemicus).
FIGURE 2 in Bioerosion traces on the Campanian turtle remains: New data from the lagoonal deposits of the Quseir Formation, Kharga Oasis, Egypt
FIGURE 2. Lithological section of the Campanian Hindaw Member (the Quseir Formation) in the study area (modified after Abu El-Kheir, 2020). Arrows mark occurrences of the three turtle-bearing horizons (I‒III) studied.
FIGURE 1 in Bioerosion traces on the Campanian turtle remains: New data from the lagoonal deposits of the Quseir Formation, Kharga Oasis, Egypt
FIGURE 1. Simplified geological map of the study area with indication of the vertebrate distribution east of the Ganah village (modified after Abu El-Kheir, 2020; AbdelGawad et al., 2023).
FIGURE 3 in Bioerosion traces on the Campanian turtle remains: New data from the lagoonal deposits of the Quseir Formation, Kharga Oasis, Egypt
FIGURE 3. (A) Nihilichnus nihilicus, circular, subcircular to ellipsoidal non-penetrating holes (arrows) on the carapace peripheral. (B, C) Karethraichnus lakkos. (B) Cluster of bowl-shaped pits (arrows) of on the carapace peripheral. (C) Small rounded holes (arrows) of which are not completely penetrating the plastron fragments. (D) External surface of carapace peripheral containing three ichnospecies Cubiculum ornatus, C. inornatus and Osteocallis mandibulus (E, F, and H, respectively). (E) Cubiculum ornatus (arrows), showing the characteristic features of the ichnospecies with well pronounced bioglyphs. (F) Cubiculum inornatus (arrow), showing details of the morphological features the ichnospecies. (G) Cubiculum isp., showing borings arranged in groups of mostly parallel to each other and infilled with sediments. (H) Osteocallis mandibulus (ellipse), showing, randomly oriented surface borings with distinct arcuate (commonly paired) scratches in turtle skeleton. Scale bars equal 0.5 cm, except for B, D and G, which are 1.0 cm, and for C, which is 0.4 cm.
FIGURE 4 in Bioerosion traces on the Campanian turtle remains: New data from the lagoonal deposits of the Quseir Formation, Kharga Oasis, Egypt
FIGURE 4. (A, B) Osteocallis mandibulus. (A) Small randomly oriented surface borings. (B) Close up view of A, showing small randomly oriented surface borings. (C, D) Radulichnus inopinatus, parallel to sub-parallel arcuate bundles closely spaced in groups. (E) Osteichnus ossiobontum, parallel borings with fused U-notches, inclined to the bone surface. (F) Osedacoides jurassicus, small simple borings in bone (yellow arrows) penetrating into the turtle bone. Note the occurrence of some Cubiculum isp. traces (red arrows). (G) Sulculites bellus, smooth, slender narrow, nonbranched straight to curved grooves. (H) Machichnus?bohemicus, shallow serial parallel or subparallel grooves (arrows) in carapace peripheral. Scale bars equal 1.0 cm, except for B, D, and E, which are 0.5 cm.
Data from: Ecological forensic testing: Using multiple primers for eDNA detection of marine vertebrates in an estuarine lagoon subject to anthropogenic influences
<p>Many critical aquatic habitats are in close proximity to human activity (i.e., adjacent to residences, docks, marinas, etc.), and it is vital to monitor biodiversity in these and similar areas that are subject to ongoing urbanization, pollution, and other environmental disruptions. Environmental DNA (eDNA) metabarcoding is an accessible, non-invasive genetic technique used to detect and monitor species diversity and is a particularly useful approach in areas where traditional biodiversity monitoring methods (e.g., visual surveys or video surveillance) are challenging to conduct. In this study, we implemented an eDNA approach that used a combination of three distinct PCR primer sets to detect marine vertebrates within a canal system of Biscayne Bay, Florida, an ecosystem representative of challenging sampling conditions and a myriad of impacts from urbanization. We detected fish species from aquarium, commercial, and recreational fisheries, as well as invasive, cryptobenthic, and endangered vertebrate species, including charismatic marine mammals such as the protected West Indian manatee, <em>Trichechus manatus</em>. Our results support the potential for eDNA analyses to supplement traditional biodiversity monitoring methods and ultimately serve as an important tool for ecosystem management. This approach minimizes stress or disturbance to organisms and removes the intrinsic risk and logical limitations of SCUBA diving, snorkeling, or deploying sensitive equipment in areas that are subject to high vessel traffic and/or low visibility. Overall, this work sets the framework to understand how biodiversity may change over different spatial and temporal scales in an aquatic ecosystem heavily influenced by urbanization and validates the use of eDNA as a complementary approach to traditional ecological monitoring methods.</p>
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Allen Brain Atlas
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
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OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.