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363 results for “species inventory”
FIGURE 1 in The Encyclopedia of Life vs. the Brochure of Life: Exploring the relationships between the extinction of species and the inventory of life on Earth
FIGURE 1. Total number of species described after 25 years, expressed as a percentage of the remaining total number of species (y axis), for different rates of discovery of new species (x axis; current values, 1 = 10,000 species/year). Three estimates of the total number of species living in year 2000 are considered: a very low estimate, 3 million (white rectangles), a middle estimate, 10 million (grey rectangles) and a high estimate, 100 million (black rectangles); in all cases, the number of species described up to year 2000 is estimated to be 1.5 million. Only if total biodiversity is very low and rates of discovery are 10 times current values (or higher), can the Encyclopedia of Life be totally accomplished in 25 years (% Described = 100; note the exclamation symbols, '!').
FIGURE 2 in The Encyclopedia of Life vs. the Brochure of Life: Exploring the relationships between the extinction of species and the inventory of life on Earth
FIGURE 2. Relationships between the rate of description of new species ('Discovery', left axis; current values, 1 = 10,000 species/ year; logarithmic scale), the time needed to describe all the species at that rate ('Time', right axis; in years; logarithmic scale), and the number of species that are lost to extinction during this time ('Biodiversity loss', horizontal axis; logarithmic scale). Three estimates of the total number of species living in year 2000 are considered: a very low estimate, 3 million (thin curves); a middle estimate, 10 million (dotted curves), and a high estimate, 100 million (thick curves). For each case, two curves are shown: discovery rates (D curves, like, D3 for 3 million species or D100 for 100 million) and time to complete the Encyclopedia of Life (i.e., time to extinction of the species indicated in the horizontal axis; t curves, like t10 for 10 million). Vertical and horizontal dotted lines are used in the figure as an example and evidence that, if the total number of species existing in year 2000 is estimated in 10 million (dotted curves), ca. 106 species (point a) will be lost during the completion of the Encyclopedia (in a time span above 100 years, point b) if we work at a rate of discovery close to 7 times the current one (point c).
FIGURE 11 in Inventory of chiton species (Polyplacophora) from the rocky intertidal of the Northern Gulf of California, with an illustrated taxonomic key
FIGURE 11. Dorsal view of head valve (I) of Lepidozona serrata CUCBACM 00471 and Acanthochitona arragonites CUCBACM 00381. Intermediate valve (IV) of Chaetopleura lurida CUCBACM 00347 and A. arragonites CUCBACM 00381 in dorsal view. Dorsal and lateral view of tail (VIII) valve of Lepidozona subtilis CUCBACM 00474, showing the regionalization of the valves and radular teeth structures relevant for the taxonomic study of chitons. a. Notch. b. Apophysis. c. Jugal area. d. Mucro. e. Diagonal ridge. f. Antemucronal area. g. Postmucronal area. h. Lateral area. i. Posterior edge. j. Apex. k. Pleural area. l. Postmucronal slope. m. Insertion plate. n. Lateropleural area. Radula, plates or teeth that constitute the radula, the taxonomically important teeth are indicated with numbers. 1. Central tooth. 2. Minor lateral tooth. 3. Major lateral. 4. Major uncinal tooth.
FIGURE 6. A–F in Inventory of chiton species (Polyplacophora) from the rocky intertidal of the Northern Gulf of California, with an illustrated taxonomic key
FIGURE 6. A–F. Scanning electron microscope images of Lepidozona clathrata CUCBACM 00464. A. Dorsal view of half head valve. B. Dorsal view of half of intermediate valve IV. C. Dorsal view of intermediate valve IV detail of central area. D. Dorsal view of detail of tail valve showing sculpture of the antero and post-mucronal area. E. Dorsal girdle scales. F. Radular teeth. G–L. Scanning electron microscope images of Lepidozona serrata CUCBACM 00471. G. Dorsal view of head valve. H. Dorsal view of intermediate valve IV. I. Dorsal view of tail valve. J. Detail of aesthetes of intermediate valve IV. K. Dorsal girdle scales. L. Radular teeth.
FIGURE 5. A–E in Inventory of chiton species (Polyplacophora) from the rocky intertidal of the Northern Gulf of California, with an illustrated taxonomic key
FIGURE 5. A–E. Scanning electron microscope images of Stenoplax mariposa CUCBACM 00459. A. Dorsal view of head valve. B. Dorsal view of intermediate valve IV. C. Dorsal view of tail valve. D. Dorsal girdle scales (at margin). E. Radular teeth detail. F–J. Scanning electron microscope images of Stenoplax sonorana CUCBACM 00462. F. Dorsal view of head valve. G. Dorsal view of tail valve. H. Detail of central area of intermediate valve IV. I. Dorsal girdle scales. J. Portion of the radula.
FIGURE 7. A–F in Inventory of chiton species (Polyplacophora) from the rocky intertidal of the Northern Gulf of California, with an illustrated taxonomic key
FIGURE 7. A–F. Scanning electron microscope images of Lepidozona subtilis CUCBACM 00475. A. Dorsal view of head valve. B. Dorsal view of half of intermediate valve IV. C. Dorsal view of tail valve. D. Valve IV aesthetes' detail of intermediate area. E, F. Radular teeth details. G–K. Scanning electron microscope images of Callistochiton elenensis CUCBACM 00476. G. Dorsal view of head valve. H. Dorsal view of half of intermediate valve IV. I. Dorsal view of tail valve. J. Dorsal girdle scales detail. K. Radular teeth. L. Radular teeth of Chiton virgulatus CUCBACM 00491 of Chiton virgulatus CUCBACM 00491.
FIGURE 4. A–I in Inventory of chiton species (Polyplacophora) from the rocky intertidal of the Northern Gulf of California, with an illustrated taxonomic key
FIGURE 4. A–I. Scanning electron microscope images of one specimen of Ischnochiton guatemalensis CUCBACM 00450. A. Dorsal view of head valve. B. Dorsal view of intermediate valve IV. C. Dorsal view of tail valve. D. Detail of valve IV central area. E. Detail of valve IV aesthetes of central area. Dorsal view of F. Dorsal girdle scales. G. Detail in dorsal view of girdle scales ornamentation. H. Radular teeth. I. Detail of central and minor lateral teeth. Light microscope images (J–L) and scanning electron microscope images (M–N) of Stenoplax limaciformis CUCBACM 00455. J. Dorsal view of head valve. K. Dorsal view of intermediate valve IV. L. Dorsal view of tail valve. M. Dorsal view of girdle scales. N. Radular teeth detail.
FIGURE 9 in Inventory of chiton species (Polyplacophora) from the rocky intertidal of the Northern Gulf of California, with an illustrated taxonomic key
FIGURE 9. Scanning electron microscope images of Nuttallina crossota CUCBACM 00488. A. Dorsal view of head valve. B. Dorsal view of intermediate valve IV. C. Dorsal view of half of intermediate valve IV shows the lateral areas. D. Dorsal view of tail valve. E. Segment of girdle in dorsal view shows the hyaline spicules. F. Radular teeth. G. Portion of girdle showing the ornamentation of spicules. H. Portion of radula. I. Detail of central, minor, and major lateral teeth.
FIGURE 10 in Inventory of chiton species (Polyplacophora) from the rocky intertidal of the Northern Gulf of California, with an illustrated taxonomic key
FIGURE 10. Scanning electron microscope images (A–F) of Acanthochitona avicula CUCBACM 00494. A. Dorsal view of head valve. B. Dorsal view of intermediate valve IV. C. Dorsal view of tail valve. D. Dorsal view of Valve IV detail of pustules. E. Portion of girdle, shows the dorsal girdle spicules. F. Portion of radula, show the central, minor and major lateral teeth. Acanthochitona exquisita CUCBACM 00497 (G–L). G. Dorsal view of head valve. H. Dorsal view of intermediate valve IV. I. Dorsal view of tail valve. J. Dorsal view of valve pustules of valve IV. K. Magnification of valve IV pustules. L. Radular teeth.
FIGURE 8. A–H in Inventory of chiton species (Polyplacophora) from the rocky intertidal of the Northern Gulf of California, with an illustrated taxonomic key
FIGURE 8. A–H. Scanning electron microscope images of Dendrochiton lirulatus CUCBACM 00479. A. Dorsal view of head valve. B. Dorsal view of intermediate valve IV. C. Dorsal view of tail valve. D. Detail of valve IV aesthetes of central area. E. Section of girdle in dorsal view. F. Detail of dorsal girdle elements. G. Detail of dorsal girdle spicules. H. Radular teeth. I–O. Scanning electron microscope images of Lepidochitona beanii CUCBACM 00486. I. Dorsal view of a whole specimen of BL 3.6 mm. J. Dorsal view of a whole specimen of BL 3.1 mm. K. Dorsal view of head valve. L. Dorsal view of intermediate valve IV. M. Dorsal view of tail valve. N. Radular teeth. O. Detail of central and minor lateral radular teeth.
FIGURE 2 in Inventory of chiton species (Polyplacophora) from the rocky intertidal of the Northern Gulf of California, with an illustrated taxonomic key
FIGURE 2. Chiton species obtained from the Northern Gulf of California. A. Dorsal and lateral views of Ischnochiton guatemalensis CUCBACM 00450. B. Dorsal and lateral views of Ischnochiton tridentatus CUCBACM 00453. C. Dorsal and lateral views of Stenoplax limaciformis CUCBACM 00455. D. Dorsal and lateral views of Stenoplax mariposa CUCBACM 00459. E. Dorsal and lateral views of Stenoplax sonorana CUCBACM 00462. F. Dorsal view of Lepidozona clathrata CUCBACM 00464. G. Dorsal view of Lepidozona serrata CUCBACM 00471. H. Dorsal and lateral views of Lepidozona subtilis CUCBACM 00475. I. Dorsal and lateral views of Callistochiton elenensis CUCBACM 00476.
FIGURE 3 in Inventory of chiton species (Polyplacophora) from the rocky intertidal of the Northern Gulf of California, with an illustrated taxonomic key
FIGURE 3. Chiton species obtained from the Northern Gulf of California. A. Dorsal and lateral view of Dendrochiton lirulatus CUCBACM 00479. B. Dorsal view of Lepidochitona beanii CUCBACM 00486. C. Dorsal and lateral view of Nutallina crossota CUCBACM 00488. D. Dorsal view of Chiton virgulatus CUCBACM 00491. E. Dorsal view of Acanthochitona avicula CUCBACM 00494. F. Dorsal view of Acanthochitona exquisita CUCBACM 00497.
FIGURES 12–19 in Faunistic inventory, identification keys and zoogeographical analysis of the Thysanoptera-Terebrantia of Saudi Arabia, including two new species
FIGURES 12–19. Scirtothrips erectus sp. n.: (12) Head; (13) Tergites IV–VII; (14) Antenna; (15) Sternites IV–VII; (16) Male tergites VII–X; (17) Male hind femora; (18) Female; (19) Male.
FIGURES 3–9 in Faunistic inventory, identification keys and zoogeographical analysis of the Thysanoptera-Terebrantia of Saudi Arabia, including two new species
FIGURES 3–9. Mycterothrips arabicus sp. n.: Antennae 3–4: (3) Female (4) Male. (5) Head; (6) Mouth cone; (7) Tergites VI–VII; (8) Tergites VIII–X; (9) Sternites V–VII.
FIGURE 2 in Faunistic inventory, identification keys and zoogeographical analysis of the Thysanoptera-Terebrantia of Saudi Arabia, including two new species
FIGURE 2. Zoogeographical affinities of Terebrantia thrips fauna of Saudi Arabia. [AFR—Afrotropical; SAR—Saharo- Arabian; COS—Cosmopolitan; END—Endemic; PAL—Palearctic; ORN—Oriental; MED—Mesiterranean; NRT—Nearctic; HOL—Holarctic.]
FIGURE 5 in Sponge inventory of the French Mediterranean waters, with an emphasis on cave-dwelling species
FIGURE 5. Cumulative richness curves for each surveyed sites and mean species richness; bars indicate standard errors.
FIGURE 4 in Sponge inventory of the French Mediterranean waters, with an emphasis on cave-dwelling species
FIGURE 4. Four species that were taken into account in the sponge survey, although they were not previously selected, because they appeared more frequently than expected in the photoquadrats. A) Haliclona lacazei was always found in the semidark community, whereas the three remaining species were previously supposed to occur mostly in the dark community: B) Pseudocorticium jarrei, C) Myceliospongia araneosa, D) Plakina crypta. B and C are examples of skeletal-less sponges, which are quite abundant in underwater caves.
FIGURE 3 in Sponge inventory of the French Mediterranean waters, with an emphasis on cave-dwelling species
FIGURE 3. Illustrations of sponge diversity in the semi-dark part of the caves with 10 common sponge species; photoquadrats recorded in A) Grotte de la Triperie, B) Grotte du Chinois, 1) Haliclona mucosa, 2) Diplastrella bistellata, 3) Dendroxea lenis, 4) Cymbaxinella damicornis, 5) Agelas oroides, 6) Oscarella tuberculata, 7) Crella pulvinar, 8) Petrosia ficiformis, 9) Ircinia oros, 10) Ircinia variabilis.
FIGURE 1 in Sponge inventory of the French Mediterranean waters, with an emphasis on cave-dwelling species
FIGURE 1. Location of the 13 cave sites of the Marseille Region where the sponge survey was implemented.
FIGURE 2 in Sponge inventory of the French Mediterranean waters, with an emphasis on cave-dwelling species
FIGURE 2. Taxonomic distribution of sponge species, and distribution per habitat; For each type of habitat, the grey color indicates the number of the habitat-exclusive species.
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