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1,146 results for “French Guiana”
Can Artificial Intelligence help in the study of vegetative growth dynamics from herbarium collections? An evaluation of the tropical flora of the French Guiana forest
<p>Dataset was used for the article "Can Artificial Intelligence help in the study of vegetative growth dynamics from herbarium collections? An evaluation of the tropical flora of the French Guiana forest".</p> <p>The related work proposes to study to what extent the use of automated visual analysis techniques, based on deep learning, can help not only to detect relatively rare vegetative structures in herbarium collections but also to automatically classify them by type of growing shoot (continuous or rhythmic).</p> <p>Abstract of the paper:</p> <p>A better knowledge of tree vegetative growth patterns and their relationship to environmental variables is crucial in understanding forest growth dynamics and how climate change may affect them. Generally less studied than reproductive structures, the phenology of tree vegetative growth mainly focuses on the analysis of growing shoots, from vegetative buds development to leaf fall. This growth process usually strongly differs between temperate and tropical regions. In temperate regions, this pattern is quite well known. Low winter temperatures impose a stop of the vegetative growth shoots and lead to the typical expression of an annual growth cycle for the vast majority of tree species. In moist tropical regions, on the other hand, the seasonality is much less marked. In addition, these regions contain a much wider variety of tree species. These two aspects lead to a tremendous diversity of phenological patterns that are still poorly known and understood. In particular, not much is known on the periodicity and timing of growth at individual trees, population, or community levels.</p> <p>The work carried out in this study aims to advance knowledge in this area, focusing more particularly on herbarium scans, as herbarium collections offer the promise of monitoring plant phenology over long time periods. However, such a study requires the ability to detect a sufficiently large number of growing shoots in herbarium collections to draw statistically relevant conclusions, which can be very costly if the work is done manually. Furthermore, herbarium collections traditionally focus on reproductive organs, and herbarium specimens showing growing shoots are pretty rare.</p> <p>We propose in this paper to study to what extent the use of automated visual analysis techniques, based on deep learning, can help not only to detect these relatively rare vegetative structures in herbarium collections but also to automatically classify them by type of growing shoot (continuous or rhythmic). Our results show the relevance of using herbarium data for vegetative phenology research, as well as the potential of deep learning approaches for growth shoot detection.</p>
National Checklists 2017: French Guiana Species List
Lists of taxa for each country and a few other administrative zones harvested from effechecka using simplified versions of geonames polygons. See <p></p>https://github.com/diatomsRcool/checklists for details<p></p>A list of species from French Guiana collected using effechecka and geonames polygons
National Checklists 2019: French Guiana Species List
Lists of taxa for each country and a few other administrative zones harvested from effechecka using simplified versions of geonames polygons. See <p></p>https://github.com/diatomsRcool/checklists for details.<p></p>A list of species from French Guiana collected using effechecka and geonames polygons
FIG. 12. — A in Annotated checklist of the Dermaptera (Insecta) of French Guiana
FIG. 12. — A, Spongiphora buprestoides (Kirby, 1891); B, Spongiphora croceipennis Audinet-Serville, 1831. Scale bars: 1.0 mm.
FIG. 3. — A in Annotated checklist of the Dermaptera (Insecta) of French Guiana
FIG. 3. — A, Pyragropsis thoracica (Audinet-Serville, 1838); B, Carcinophora percheroni (Guérin & Percheron, 1838); C, Doru gracilis (Burmeister, 1838). Scale bars: 1.0 mm.
FIG. 2 in The Amphibians of the Mitaraka massif, French Guiana
FIG. 2. — Seven remarkable species found during the survey: A, Adenomera hylaedactyla (Cope, 1868); B, Anomaloglossus mitaraka Fouquet, Vacher, Courtois, Deschamps, Ouboter, Jairam, Gaucher, Dubois & Kok, 2019; C, Chiasmocleis aff. haddadi Peloso, Sturaro, Forlani, Gaucher, Motta & Wheeler, 2014; D, Hyalinobatrachium kawense Castroviejo-Fisher, Vilà, Ayarzagüena, Blanc & Ernst, 2011; E, Pristimantis aff. pluvialis Shepack, von May, Ttito & Catenazzi, 2016; F, Synapturanus cf. mirandaribeiroi Nelson & Lescure, 1975; G, Microcaecilia cf. rochai Maciel & Hoogmoed, 2011.
FIG. 1 in The Amphibians of the Mitaraka massif, French Guiana
FIG. 1. — Topographic map showing the localities of the present survey and of the previous ones that have been undertaken in a 100 km radius.
FIG. 7 in Three new species of Lecteria Osten Sacken, 1888 (Diptera: Tipulidae) from a scientific survey in Mitaraka (French Guiana)
FIG. 7. — Lecteria (Lecteria) teko n. sp. male, holotype: A, terminalia, dorsal view; B, terminalia, ventral view; C, aedeagal complex (dorsal view). Scale bars: A, B, 0.5 mm; C, 0.3 mm.
FIG. 3 in Three new species of Lecteria Osten Sacken, 1888 (Diptera: Tipulidae) from a scientific survey in Mitaraka (French Guiana)
FIG. 3. — Lecteria (Lecteria) mitarakanea n. sp., thorax, male, holotype: A, lateral view; B, dorsal view. Scale bars: 1 mm.
FIG. 8 in Three new species of Lecteria Osten Sacken, 1888 (Diptera: Tipulidae) from a scientific survey in Mitaraka (French Guiana)
FIG. 8. — Lecteria (Lecteria) wayana n. sp. male, holotype: A, wing; B, head; C, detail of the first antennal flagellomeres. Scale bar: A, 1 mm.
FIG. 3. — Myiomystax trilineata n. gen., n in Descriptions of two new genera of Maruinini (Diptera, Psychodidae, Psychodinae) from the Mitaraka range of French Guiana
FIG. 3. — Myiomystax trilineata n. gen., n. sp.: A, wing; B, male head, frontal view; C, male epandrium, proctiger and epandrial claspers, dorsal view; D, male terminalia, epandrium removed, dorsal view. Abbreviations: see Material and methods. Scale bars: A, 0.5 mm; B, 0.25 mm; C-D, 0.1 mm.
FIG. 1. — Polletomyia subulata n. gen., n in Descriptions of two new genera of Maruinini (Diptera, Psychodidae, Psychodinae) from the Mitaraka range of French Guiana
FIG. 1. — Polletomyia subulata n. gen., n. sp.: A, male head, frontal view; B, wing; C, male antennal flagellomeres 3-4, dorsal view; D, male antennal flagellomeres 12-14, dorsal view; E, male terminalia, epandrium removed, dorsal view; F, male terminalia, epandrium removed, aedeagal structure expanded, dorsal view; G, male terminalia, epandrium removed, aedeagal structure partly expanded, ventral view. Abbreviations: see Material and methods. Scale bars: A, 0.25 mm; B, 0.5 mm; C-G, 0.1 mm.
Figure 2 in The rare rhinoceros beetle, Ceratophileurus lemoulti Ohaus, 1911, in French Guiana and Suriname (Coleoptera, Scarabaeidae, Dynastinae, Phileurini)
Figure 2. Male specimen of Ceratophileurus lemoulti Ohaus collected at Raleighvallen, Suriname. Photograph by Alain and Marcel Galant.
Figure 1 in The rare rhinoceros beetle, Ceratophileurus lemoulti Ohaus, 1911, in French Guiana and Suriname (Coleoptera, Scarabaeidae, Dynastinae, Phileurini)
Figure 1. Male specimen of Ceratophileurus lemoulti Ohaus collected in French Guiana (YPC). Photograph by Yannig Ponchel. Aedeagus (aed) attached to card mount underneath specimen, in oblique view.
Figure 3 in The rare rhinoceros beetle, Ceratophileurus lemoulti Ohaus, 1911, in French Guiana and Suriname (Coleoptera, Scarabaeidae, Dynastinae, Phileurini)
Figure 3. Distribution map for Ceratophileurus lemoulti Ohaus. Collection localities in black circles.
FIG. 1. — A in The Sepsidae of the Mitaraka expedition, French Guiana (Diptera)
FIG. 1. — A, Archisepsis armata (Schiner, 1868); B, Archisepsis diversiformis (Ozerov, 1993); C, Meropliosepsis sexsetosa Duda, 1926; D, Microsepsis armillata (Melander & Spuler, 1917); E, Microsepsis furcata (Melander & Spuler, 1917); F, Microsepsis mitis (Curran, 1927); G, Palaeosepsioides erythromyrmus (Silva, 1991); H, Palaeosepsis dentata (Becker, 1919). Scale bars: 1 mm. All pictures are retrieved from Sepsidnet 2013.
FIG. 2 in The Sepsidae of the Mitaraka expedition, French Guiana (Diptera)
FIG. 2. — Palaeosepsioides mitarakensis Silva, n. sp., male holotype: A, habitus, lateral view; B, head, lateral view; C, habitus, dorsal view; D, left fore leg, posterior view; E, wing; F, posterior part of abdomen, ventral view. Scale bars: 0,5 mm, except Fig. 2A, 2,5 mm.
FIG. 16. — Adenophallusia aratayensis n in The Paroecanthini crickets (Orthoptera: Grylloidea: Gryllidae: Oecanthinae) from French Guiana
FIG. 16. — Adenophallusia aratayensis n. sp., male phallic complex: A, dorsal; B, ventral; C, lateral. Abbreviations: See Material and methods. Scale bar: 1 mm.
FIG. 31. — Stenoecanthus planixiphus n in The Paroecanthini crickets (Orthoptera: Grylloidea: Gryllidae: Oecanthinae) from French Guiana
FIG. 31. — Stenoecanthus planixiphus n. sp., male phallic complex: A, dorsal; B, ventral; C, lateral. Female copulatory papilla: D, dorsal; E, ventral; F, lateral. Scale bars: A-C, 1 mm; D-F, 0.5 mm.
FIG. 26 in The Paroecanthini crickets (Orthoptera: Grylloidea: Gryllidae: Oecanthinae) from French Guiana
FIG. 26. — Cylindrogryllus (Apterotrypa) guyanensis n. sp., male phallic complex: A, dorsal;B, ventral;C, lateral. Abbreviations:See Material and Methods. Scale bar:1 mm.
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International Brain Laboratory public data
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OpenNeuro
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