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1,188 results for “DELTA”
FIGURE 3. Maraenobiotus supermario n in A new species of Maraenobiotus (Copepoda, Harpacticoida) from Lena River Delta (North-Eastern Siberia)
FIGURE 3. Maraenobiotus supermario n. sp. Female holotype: A, antennule; B. antenna. Male allotype: C, antennule
FIGURE 1. Maraenobiotus supermario n in A new species of Maraenobiotus (Copepoda, Harpacticoida) from Lena River Delta (North-Eastern Siberia)
FIGURE 1. Maraenobiotus supermario n. sp. Female holotype: A, cephalothorax and thoracic segments, dorsal; B. cephalothorax and thoracic segments, lateral.
FIGURE 2. Maraenobiotus supermario n in A new species of Maraenobiotus (Copepoda, Harpacticoida) from Lena River Delta (North-Eastern Siberia)
FIGURE 2. Maraenobiotus supermario n. sp. Female holotype: A, abdomen, dorsal; B, abdomen, ventral. Arrow is nodular thickening.
FIGURE 8. Maraenobiotus supermario n in A new species of Maraenobiotus (Copepoda, Harpacticoida) from Lena River Delta (North-Eastern Siberia)
FIGURE 8. Maraenobiotus supermario n. sp. Female holotype: A, P5, anterior; Male allotype: A, P5, anterior.
Data from: Benthic community history in the Changjiang (Yangtze River) mega delta: Damming, urbanization, and environmental control
Coastal environment of the Changjiang delta has been influenced by recent anthropogenic activities such as dam constructions, and increased sewage and fertilizer inputs. Previous work examined compositional shift of marine plankton to assess ecological impacts of these activities on marine ecosystems in the Changjiang discharge area. Here we used benthic marine ostracodes collected in the Changjiang Estuary and its adjacent East China Sea in the 1980s and the 2010s, respectively, to investigate temporal changes of the benthic community and the controlling factors of the benthic fauna. Our results revealed more shoreward distribution of some well-known off-shore ostracode species in the 2010s compared to the 1980s, and relatively more important role of environmental processes (e.g. bottom water temperature, bottom water salinity and the eutrophic conditions of surface water) than spatial processes (e.g. the flow of ocean currents) in structuring ostracode compositions. The temporal changes of ostracode community were likely attributed to the combined effects of reduced seasonal water and sediment discharge, and eutrophic conditions of the Changjiang due to numerous dam constructions along the Changjiang and population expansion in the Changjiang basin. Results of redundancy analysis and variation partitioning suggested that ocean currents facilitated environmental filtering of ostracode species such that they could disperse to preferred environmental conditions. These findings highlighted the potential uses of marine microfossils to better understand ecological impacts on benthic ecosystem in vulnerable Asian mega deltas and provided insights into the integration of metacommunity concepts in disentangling dynamics of marine benthic communities.
Data from: Anthropogenic disturbance of tropical forests threatens pollination services to açaí palm in the Amazon river delta
The açaí palm Euterpe oleracea Mart. in the Amazon river delta has seen rapid expansion to meet increased demand for its fruit. This has been achieved by transforming lowland forest habitats (floodplains) into simplified agroforests and intensive plantation in upland areas. As açaí palm makes an important contribution to the economy and food security of local communities, identifying management approaches that support biodiversity and ecosystem processes that underpin fruit production on açaí farms is essential. We compared flower-visitor communities and açaí fruit production in floodplain forests and upland plantations, across gradients of local management intensity (i.e. açaí density per ha) and surrounding forest cover. The relative contribution of biotic pollination and degree of pollen limitation were assessed using insect exclusion and hand-pollination experiments. We found that açaí flower visitors are highly diverse (c. 200 distinct taxa) and had variable responses to disturbance. Bee visitation was higher in floodplains and positively related to surrounding forest cover, but other flower visitors, including specialised curculionid beetles, were unresponsive to changes in surrounding forest cover. However, intensive management practices (i.e. high açaí palm densities) in floodplains and uplands had contrasting effects on flower-visitor communities, with flower-visitor richness being lower on intensively managed floodplain farms and ant densities being higher on intensive upland farms. Pollination experiments revealed açaí palm to be highly dependent on biotic pollination. Fruit set in open-pollinated inflorescences was positively related to flower-visitor richness and specialised curculionid beetle visitation, whereas the presence of ants on inflorescences had a negative effect. Synthesis and applications. Our study shows that pollinators are essential for açaí fruit production, but that intensive farming practices have eroded the relationship between surrounding forest cover and ecosystem function in floodplains (i.e. conversion of native forest into simplified agroforests) and increased the frequency of antagonistic interactions in uplands (e.g. high ant densities). These findings underline the value of extensive management practices, such as the maintenance of other tree species within farms and adjacent unmanaged forest patches, to ensure the long-term sustainability of açaí fruit production in the Amazon river delta.
FIGURE 4 in Tonlesapia amnica, a new species of dragonet (Teleostei: Callionymidae) from the Mekong delta
FIGURE 4. Map of the Mekong River drainage, showing collection localities of Tonlesapia amnica and T. tsukawakii.
FIGURE 3. Tonlesapia amnica, UMMZ 245589 in Tonlesapia amnica, a new species of dragonet (Teleostei: Callionymidae) from the Mekong delta
FIGURE 3. Tonlesapia amnica, UMMZ 245589, paratype, 43.3 mm SL; dorsal and lateral views showing coloration in life.
FIGURE 2 in Tonlesapia amnica, a new species of dragonet (Teleostei: Callionymidae) from the Mekong delta
FIGURE 2. Dorsal, lateral and ventral views of head of Tonlesapia amnica (UMMZ 245375, paratype, 37.9 mm SL), showing cephalic lateralis system. Scale bar represents 2 mm.
FIGURE 6 in Earthworms of the ' acaecate' Pheretima group in Vietnam (Oligochaeta: Megascolecidae), with description of a new species from the Mekong delta
FIGURE 6. Polypheretima mekongmontis sp. nov., holotype (A–E, G). A. Male pore region (mp=male pore, gm=genital marking). B. Spermathecae (amp=ampulla, dv=diverticula). C. Prostate gland. D. Copulatory pouch, transverse body section E. Accessory gland, transverse body section. F. Casts. G. Ventral view of clitellum and male pore region. Scale bar = 1mm (for A, B, C), = 10mm (for G).
FIGURE 5 in Earthworms of the ' acaecate' Pheretima group in Vietnam (Oligochaeta: Megascolecidae), with description of a new species from the Mekong delta
FIGURE 5. Polypheretima taprobanae (Beddard, 1892) from Vung Liem, Vinh Long Province. A. Male pore region (mp=male pore, gm=genital marking). B. Spermathecae (amp=ampulla, dv=diverticula); C. Prostate gland. Scale = 1mm.
FIGURE 4 in Earthworms of the ' acaecate' Pheretima group in Vietnam (Oligochaeta: Megascolecidae), with description of a new species from the Mekong delta
FIGURE 4. Polypheretima elongata (Perrier, 1872) from Vung Liem, Vinh Long Province. A. Male pore region (mp = male pore, gm: genital marking). B. Spermathecae (amp= ampulla). C. Prostate gland. Scale = 1mm.
FIGURE 3 in Earthworms of the ' acaecate' Pheretima group in Vietnam (Oligochaeta: Megascolecidae), with description of a new species from the Mekong delta
FIGURE 3. Distribution of species of the genus Polypheretima in Vietnam. The exotic Po. elongata with many records all over the country is omitted.
FIGURE 16. Niphargus sharifi, n in Making future taxonomy of Niphargus (Crustacea: Amphipoda: Niphargidae) in the Middle East easier: DELTA database of Middle East species with description of four new species from Iran
FIGURE 16. Niphargus sharifi, n. sp., Sarab-e-Robat, male 19 mm (holotype). A, P 3; B, P 4; C, P 5; D, P 6; E, P 7. Scale bars: 1mm.
FIGURE 12 in Making future taxonomy of Niphargus (Crustacea: Amphipoda: Niphargidae) in the Middle East easier: DELTA database of Middle East species with description of four new species from Iran
FIGURE 12. Niphargus darvishi, sp. nov., Dimeh Spring, male 13 mm (holotype). A, P 3; B, P 4; C, P 5; D, distal part of P5(paratype); E, P 6; F, P 7. Scale bars: 1mm.
FIGURE 8 in Making future taxonomy of Niphargus (Crustacea: Amphipoda: Niphargidae) in the Middle East easier: DELTA database of Middle East species with description of four new species from Iran
FIGURE 8. Niphargus borisi, sp. nov., Belqais Spring, male 9 mm (holotype). A, P 3; B, P 4; C, P 5; D, P 6; E, P 7. Scale bars: 1mm.
FIGURE 4 in Making future taxonomy of Niphargus (Crustacea: Amphipoda: Niphargidae) in the Middle East easier: DELTA database of Middle East species with description of four new species from Iran
FIGURE 4. Niphargus bisitunicus, sp. nov., Sarab-e- Bisitun, male 9 mm (holotype). A, P 3; B, P 4; C, P 5; D, P 6; E, P 7. Scale bars: 1mm.
FIGURES 5, 6. 5. Delta esuriens, hind wing without jugal lobe. 6 in Vespidae (Hymenoptera) of the Pothwar region of Punjab, Pakistan
FIGURES 5, 6. 5. Delta esuriens, hind wing without jugal lobe. 6. Polistes wattii, hind wing with jugal lobe.
Magnetometer (Delta-H) data of Tirunelveli and Alibag for selected IP shock events during 2001-2021
Open the record for dataset details and reuse information.
V28_9 Untargeted Metabolomics Synechococcus elongatus WT vs. delta CutA
<p>V28_9 Untargeted metabolomics of Synechococcus elongatus sp. PCC 7942 WT or delta CutA in exponential or stationary phase. 5 or 10 uL injections on LC/MS column.</p><p> </p>
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
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.