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22 results for “soft-bottoms”
Figure 3 in Depth-related gradient of soft-bottom crustacean distribution along the Cilician shelf*
Figure 3. Spatiotemporal (depths and months) and annual (average) changes of crustacean faunistic parameters on the Cilician shelf for number of crustacean species (S), density (N), biomass, species richness (d), evenness (J'), and Shannon–Wiener diversity (H') indexes. Each point represents the value obtained from averaging values of each parameter across all replicates at each depth (n = 9).
Figure 5 in Depth-related gradient of soft-bottom crustacean distribution along the Cilician shelf*
Figure 5. CCA ordination of species (based on abundance data) with superimposed symbols representing bottom depth (see Figure 4), sedimentary parameters, and sea surface temperature of the sampling locations in February (F), May (M), August (A), and November (N). Symbol size is proportional to value of each variable, i.e. the largest symbol corresponds to the maximum value.
FIGURE 4. A in Soft-bottom sipunculans in Izmir Bay (Aegean Sea, eastern Mediterranean)
FIGURE 4. A, Golfingia (G.) vulgaris vulgaris, introvert hook. B, Thysanocardia procera, tentacles surrounding bilobed nuchal organ. C, D, Phascolion (P.) strombus strombus, holdfast papillae (C) and introvert hook (D). E, Onchnesoma steenstrupii steenstrupii, egg in coelomic cavity. F, Aspidosiphon (A.) mexicanus, intestinal coils and spindle muscle. G, Aspidosiphon (A.) muelleri, anal shield. Scale bars: A, 15 µm; B, 0.3 mm; C, 40 µm; D, 20 µm; E, 20 µm; F, 1 mm; G, 0.5 mm.
FIGURE 8 in Politolana sanchezi sp. nov. (Crustacea: Isopoda: Cirolanidae), a new benthic bioturbating scavenger from bathyal soft-bottoms of the southern Bay of Biscay (northeastern Atlantic Ocean)
FIGURE 8. Consumption of local baited fish (vertebral columns of Trachurus trachurus (Linnaeus, 1758) and skin of undetermined deep-sea shark) by benthic scavengers (mainly Politolana sanchezi sp. nov.) during a 12h TFS night trophic experiment on the bottom of the Cantabrian continental slope (15–16/04/2004, 602 m depth). (Photo: F. Sánchez).
FIGURE 4 in Politolana sanchezi sp. nov. (Crustacea: Isopoda: Cirolanidae), a new benthic bioturbating scavenger from bathyal soft-bottoms of the southern Bay of Biscay (northeastern Atlantic Ocean)
FIGURE 4. Politolana sanchezi sp. nov., (A–G) paratype male (MNCN 20.04/8351); posterior face of left pereopods: (A) pereopod 1, (B) pereopod 2, (C) pereopod 3, (D) pereopod 4, (E) pereopod 5, (F) pereopod 6, (G) pereopod 7. Scale bar: 1 mm.
FIGURE 3 in Politolana sanchezi sp. nov. (Crustacea: Isopoda: Cirolanidae), a new benthic bioturbating scavenger from bathyal soft-bottoms of the southern Bay of Biscay (northeastern Atlantic Ocean)
FIGURE 3. Politolana sanchezi sp. nov., (A) holotype male (MNCN 20.04/8350); (B–G) paratype male (MNCN 20.04/ 8351); (A) frontal lamina, clypeus and labrum, (B) antennule, (C) antenna, (D) dorsal view of left mandible, (E) dorsal view of left maxillule, (F) dorsal view of left maxilla, (G) dorsal view of left maxilliped. Scale bars: 1 mm.
FIGURE 2 in Politolana sanchezi sp. nov. (Crustacea: Isopoda: Cirolanidae), a new benthic bioturbating scavenger from bathyal soft-bottoms of the southern Bay of Biscay (northeastern Atlantic Ocean)
FIGURE 2. Politolana sanchezi sp. nov., (A) lateral and (B) dorsal views of holotype male (MNCN 20.04/8350); (C) pleotelson apex of paratype male (MNCN 20.04/8351) in dorsal view. Scale bars: A–B = 5 mm, C = 0.1 mm.
FIGURE 1 in Politolana sanchezi sp. nov. (Crustacea: Isopoda: Cirolanidae), a new benthic bioturbating scavenger from bathyal soft-bottoms of the southern Bay of Biscay (northeastern Atlantic Ocean)
FIGURE 1. Geographical location of sampling stations where the isopod Politolana sanchezi sp. nov. was collected in the southeastern Bay of Biscay. Square: suprabenthic sledge; rhombus: fish-baited trap mounted on photogrammetric sledge; triangle: Flusha box corer.
FIGURE 5 in Politolana sanchezi sp. nov. (Crustacea: Isopoda: Cirolanidae), a new benthic bioturbating scavenger from bathyal soft-bottoms of the southern Bay of Biscay (northeastern Atlantic Ocean)
FIGURE 5. Politolana sanchezi sp. nov., (A–C) paratype male (MNCN 20.04/8352), (D) paratype male (MNCN 20.04/ 8351); posterior face of left pleopods: (A) pleopod 1, (B) pleopod 2, (C) pleopod 5; (D) ventral view of left uropod. Scale bars: 1 mm.
FIGURE 7 in Politolana sanchezi sp. nov. (Crustacea: Isopoda: Cirolanidae), a new benthic bioturbating scavenger from bathyal soft-bottoms of the southern Bay of Biscay (northeastern Atlantic Ocean)
FIGURE 7. Bioturbation of surficial sediments related to the scavenging behaviour of benthic crustaceans (mainly represented by the isopod Politolana sanchezi sp. nov.) during a 12h TFS night trophic experiment on the Cantabrian continental slope (15–16/04/2004, 602 m depth). A: photo n°1 (20h18) showing the initial bottom aspect with regular ripple marks at the beginning of the sequence. B: photo n° 20 (23h30) showing numerous isopods attracted by the baited fish of the trap, the disappearance of ripple marks in the area close to the sledge where the bioturbating activity of scavengers is maximal, the cloudy aspect of the near-bottom water just above the bioturbated area due to the presence of resuspended muddy bottom particles. (Photos: F. Sánchez).
FIGURE 6 in Politolana sanchezi sp. nov. (Crustacea: Isopoda: Cirolanidae), a new benthic bioturbating scavenger from bathyal soft-bottoms of the southern Bay of Biscay (northeastern Atlantic Ocean)
FIGURE 6. Geographical distribution of Politolana species, based on data from Wetzer et al. 1986, Riseman et al. 2001, 2002. Each species symbol on the planisphere is located at the sampling station of the corresponding holotype, except for P. eximia (original station not known; symbol positioned centrally on the Brazilian coast).
Figure 5 in Systematics and life habit in Serpula israelitica Amoureux, 1977 (Polychaeta Serpulidae) from the Mediterranean with remarks on other soft-bottom serpulids
Figure 5. Serpula israelitica. (A) Cross-section of the tube wall flaked in layers of different thickness. Scale bar 100 µm. Sample Noto 10G. (B) Detail. Scale bar 20 µm. Sample Noto 10G. (C) Prismatic crystals from the tube wall ordered in a lamellofibrillar structure partially obliterated by organic matrix within the prisms. Scale bar 10 µm. Sample Noto 10G. (D, E) Ventral and lateral view of a mineralized tabula closing the posterior end of a broken unattached distal end. Scale bar 1 mm. Sample Ciclopi 2G. (F–H) Progressively closer views of a tabula in cross-section showing a sphaerulitic prismatic structure. Scale bars 500 µm (F) and 100 µm (G, H). Sample Noto 10N. (I) Abundant organic matrix overlying the outer surface of a tabula. Scale bar 5 µm. Sample Noto 10N.
Figure 3 in Systematics and life habit in Serpula israelitica Amoureux, 1977 (Polychaeta Serpulidae) from the Mediterranean with remarks on other soft-bottom serpulids
Figure 3. Serpula israelitica. (A) Attached tube parts irregularly curved and widely encrusting a corallinae algal fragment. Scale bar 1 mm. Sample AM/91 2D. (B) Encrusting tube circular in cross-section, with smooth shiny surface and two evident lateral flanges. Scale bar 1 mm. Sample AP07. (C) Detail of smooth outer surface from the attached part of the tube. Scale bar 200 µm. Sample AP07. (D) Row of alveoles inside a broken part of the basal flange. Alveoles are equally sized and regularly aligned. Scale bar 500 µm. Sample AM/91 2D. (E) Internal view of an alveole showing a subquadrangular undulate contour and crystals paving the lumen surface. Scale bar 50 µm. Sample AM/91 2D. (F) Detail of alveole on its inner surface with elongate prismatic crystals irregularly arranged in an unoriented structure. Scale bar 5 µm. Sample AM/91 2D. (G) Encrusting tube still with its proximal end (arrow). Scale bar 1 mm. Sample AP 07. (H) Detail of proximal end of tube, circular in cross-section, weak and lacking ornamentation, separated from the rest of the tube by a narrow rim (arrow). Scale bar 100 µm. Sample AP 07.
Figure 2 in Systematics and life habit in Serpula israelitica Amoureux, 1977 (Polychaeta Serpulidae) from the Mediterranean with remarks on other soft-bottom serpulids
Figure 2. Serpula israelitica. (A) Collar chaetae: slender limbate capillaries. (B) Collar chaeta: geniculate with a narrow distal tip. (C) Thoracic chaetae: limbate capillaries. (D) Thoracic uncinus. (E) Capillary simple chaeta from the 12th thoracic chaetiger. (F) Abdominal chaeta with flat trumpet-shaped end. Scale bars 10 µm. Sample Ciclopi 2G.
Figure 6 in Systematics and life habit in Serpula israelitica Amoureux, 1977 (Polychaeta Serpulidae) from the Mediterranean with remarks on other soft-bottom serpulids
Figure 6. (A) Serpula israelitica: free tube distal part showing three different growth directions (arrows), double orifice (to the left) resulting from two growth directions after accidental breakage. (B) Detail of bifurcation. (C) Tube distal end forming a slightly bend and two angular changes in growth direction. Scale bars 2 mm. Sample Ciclopi 18G. (D–G) Hydroides norvegicus: trochospirally coiled tubes of adult specimens growing free on the sediment. (D) Tube showing on its base a sand grain of the sediment still preserved as the original tiny substrate. (E, F) Dextrally and sinistrally coiled tubes with encrusted substrates not evident. (G) Tube with the cast of the original tiny substrate. Scale bar 1 mm. Samples Megara 6, 8. (H, I) Protula tubularia: tube irregularly folding on itself before straightening and growing vertically far from sediment, as shown by epibiont encrustations exclusively on distal end. Scale bar 5 mm. Sample BIOICE 2168, 2595. (L) Protula tubularia: tube distal end showing three different changes in growth directions (arrows) as a response of subsequent repositions of the animal above the bottom. Scale bar 1 cm. Sample CT 11.
Figure 1 in Systematics and life habit in Serpula israelitica Amoureux, 1977 (Polychaeta Serpulidae) from the Mediterranean with remarks on other soft-bottom serpulids
Figure 1. Serpula israelitica. (A) Branchial crown bearing operculum on the left and a rudimentary club-shaped pseudoperculum on the right. (B) Operculum shallow funnel-shaped with a denticulate edge, transition/operculum marked by a slight constriction. Sample Ciclopi 2G. (C) A coloured specimen within its tube. Sample CANCAP 7.031 (Photo F. Verbiest). (D) Thorax in lateral view, trilobed collar and 12 pairs of chaetigers. Sample Ciclopi 2G. Scale bars 1 mm.
Figure 4 in Systematics and life habit in Serpula israelitica Amoureux, 1977 (Polychaeta Serpulidae) from the Mediterranean with remarks on other soft-bottom serpulids
Figure 4. Serpula israelitica. (A) Tube distal parts. Scale bar 2 mm. Sample Noto 10N. (B) Old-looking tube flaking off in irregular layers. Scale bar 1 mm. Sample Ciclopi 2G. (C) Tube of a young specimen with a shiny outer surface and slight growth lines. Scale bar 1 mm. Sample CR/10. (D) Micromorphology of outer surface of the tube of a young specimen showing rounded and symmetric in section growth lines. Scale bar 200 µm. Sample Ciclopi 2G. (E) Smooth outer surface from a tube distal part corresponding to the adult/old stage, growth lines disappearing with further calcification. Scale bar 200 µm. Sample Noto 10N.
FIGURE 1 in Soft-bottom sipunculans in Izmir Bay (Aegean Sea, eastern Mediterranean)
FIGURE 1. Map of the investigated area, with the location of sampling stations.
FIGURE 2 in Soft-bottom sipunculans in Izmir Bay (Aegean Sea, eastern Mediterranean)
FIGURE 2. Relative dominance of the species in soft substrata by numbers of individuals.
FIGURE 3 in Soft-bottom sipunculans in Izmir Bay (Aegean Sea, eastern Mediterranean)
FIGURE 3. Seasonal population densities of sipunculan species in Izmir Bay during 2001.
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International Brain Laboratory public data
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OpenNeuro
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