Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
976
datasets available to search
ShareScore release 0.9.0
Dataset results
976 results for “Pacific Islands”
Data from: Basin-scale biogeochemical and ecological impacts of islands in the tropical Pacific Ocean
<p><strong>Abstract</strong></p> <p>In the relatively unproductive waters of the tropical ocean, islands can enhance phytoplankton biomass and create hotspots of productivity and biodiversity that sustain upper trophic levels, including fish that are crucial to the survival of islands’ inhabit- ants. This phenomenon, termed the island mass effect 65 years ago, has been widely described. However, most studies focused on individual islands, and very few documented phytoplankton community composition. Consequently, basin-scale impacts on phytoplankton biomass, primary production and biodiversity remain largely unknown. Here we systematically identify enriched waters near islands from satellite chlorophyll concentrations (a proxy for phytoplankton biomass) to analyse the island mass effect for all tropical Pacific islands on a climatological basis. We find enrichments near 99% of islands, impacting 3% of the tropical Pacific Ocean. We quantify local and basin-scale increases in chlorophyll and primary production by contrasting island-enriched waters with nearby waters. We also reveal a significant impact on phytoplankton community structure and biodiversity that is identifiable in anomalies in the ocean colour signal. Our results suggest that, in addition to strong local bio- geochemical impacts, islands may have even stronger and farther-reaching ecological impacts.</p> <p> </p> <p><strong>Data set and method</strong></p> <p>For each island, an algorithm detected the Island Mass Effect (IME) from climatological satellite chlorophyll maps as a contour enclosing the island and surrounding high-chlorophyll waters, termed IME region. A reference (REF) region of the same size was detected alongside each IME region, enclosing nearby non-IME waters. The IME and REF regions were used to build the IME database described in Messié et al. (2022), that includes variables related to satellite chlorophyll, primary production, and PHYSAT phenoclass diversity metrics in IME and REF regions on a climatological basis.</p> <p>This data set includes 4 files:</p> <ul> <li>island_database.csv: information regarding the 664 islands and shallow reefs where the IME detection was applied</li> <li>IME_masks.nc: monthly climatological masks for the IME and REF regions for all islands,</li> <li>IME_database.nc: IME database as a function of island and climatological month (chlorophyll, primary production, and phenoclass-derived variables calculated within the IME and REF masks).</li> <li>PHYSAT_climatology.nc: climatological maps for each PHYSAT phenoclass, used to calculate phenoclass-derived variables in the IME database.</li> </ul> <p>See details regarding data sources and calculations in <a href="https://rdcu.be/cO4qr">Messié et al. (2022)</a>.</p>
Benthic community response to different disturbance type events across six islands between two timepoints in the Central Pacific
A coral reef's response to disturbance can be driven by various factors including community composition. This dataset highlights benthic cover and its changes between two timepoints at six islands across the central Pacific. The survey islands include Ant Atoll, Pakin Atoll, and Pohnpei located within the Federated States of Micronesia (FSM) as well as Upon and Savai'i in Samoa and Rarotonga in the Cook Islands. Survey years differed between sites but all sites had an estimated two-year time-difference between resampling. To extract benthic cover, photos were annotated using randomized points and labeled to their highest taxonomic resolution, down to genus-level for hard corals. Both abiotic and biotic substrate were identified and major functional groups included: hard corals, soft corals, invertebrates, turf algae, Halimeda spp., crustose coralline algae, and other (sand/debris/etc.). Disturbance type and community composition at the initial survey period drove changes in percent cover for major functional groups. Data was collected by annotating photos from transect surveys on a coral reef. This effort was completed by the 2020 SIO 'Pop-up' SURF REU that was formed in rapid response due to COVID-19 research limitations.
Gerational issues in linking family farming production, traditional food in diet, physical activity and obesity in Pacific Islands countries and territories: the case of the Melanesian population on Lifou Island
<p>In the Melanesian culture, traditional activities are organized around family farming, although the lifestyle transition taking place over the last several decades has led to imbalances in diet and physical activity, with both leading to obesity. The aim of this interdisciplinary study was to understand the links between family farming (produced, exchanged, sold, and consumed food), diet (focused on produced, hunted, and caught food), physical activity (sedentary, light, and moderate-to-vigorous physical activity) and obesity in Melanesian Lifou Island families (parents and children). Forty families, including 142 adults and children, completed individual food frequency questionnaires, wore tri-axial accelerometers for seven continuous days, and had weight and height measured with a bio-impedance device. Qualitative and quantitative interviews were conducted at the household level concerning family farming practices and sociodemographic variables. Multinomial regression analyses and logistic regression models were used to analyze the data. Results showed that family farming production brings a modest contribution to diet and active lifestyles for the family farmers of Lifou Island. The drivers for obesity in these tribal communities were linked to diet in the adults, whereas parental socioeconomic status and moderate-to-vigorous physical activity were the main factors associated to overweight and obesity in children. These differences in lifestyle behaviors within families suggest a transition in cultural practices at the intergenerational level. Future directions should consider seasonality and a more in-depth analysis of diet including macro- and micro- nutrients to acquire more accurate information on the intergenerational transition in cultural practices and its consequences on health outcomes in the Pacific region.</p>
Brilliantia kiribatiensis, a new genus and species of Cladophorales (Chlorophyta) from the remote coral reefs of the Southern Line Islands, Pacific Ocean
<p>Data associated with the study "<em>Brilliantia kiribatiensis</em>, a new genus and species of Cladophorales (Chlorophyta) from the remote coral reefs of the Southern Line Islands, Pacific Ocean".</p> <p><strong>ITS.fasta, ITS_bmge.fasta, LSU.fasta, LSU_bmge.fasta, SSU.fasta, SSU_bmge.fasta: </strong>SSU rDNA, LSU rDNA and rDNA ITS sequences used in phylogenetic analyses. Sequences of Brilliantia kiribatiensis were added to updated phylogenetic datasets used previously (Leliaert et al. 2007a, Leliaert et al. 2009b), aligned in MAFFT v7.215 (Katoh and Standley 2013), and stripped of hypervariable sites in BMGE v1.1 (Criscuolo and Gribaldo 2010) by using the -h 0.4 -g 0.35 parameters. Alignments were visually checked and concatenated in Seaview v4.4.2.</p> <p><strong>concatenated_SSU_ITS_LSU.fasta</strong>: concatenated alignment with following partitions: SSU: 1-1797, ITS1+5.8S+ITS2: 1798-3335, LSU: 3336-3926.</p> <p><strong>Table_S1_sequence_sources.xls: </strong>GenBank accessions, sample isolate codes and sites of collection for sequences included in the concatenated phylogenetic data set.</p> <p><strong>Table S2. </strong>Percent cover of different algal groups in 1 m2 photoquadrats. Algal groups are identified to genus level for fleshy macroalgae or functional group for turf algae, branched red algae, crustose coralline algae, and cyanobacteria.</p> <p><strong>Table SX.</strong> Morphological measurements of <em>Brilliantia kiribatiensis</em>.</p>
Figs 44–66 in Revision of the non-marine centric diatom flora (Bacillariophyta) of the sub-Antarctic Campbell Island (southern Pacific Ocean) with the descriptions of five new species
Figs 44–66. Ferocia houkiana Goeyers & Van de Vijver sp. nov. LM and SEM. Campbell Island holotype population, sample BAS284 (BR-4578). LM. 44–49. Several frustules in girdle view, often connected to each other. 50–51. Internal valves. 52–62. Several valves in valve face view clearly showing the central ring of spines. SEM. 63. Frustule in girdle view with the narrow copulae. 64. Frustule in girdle view with the narrow copulae on one side and one the side showing the broad mantle with one indicated rimoportula. 65. External view of a valve face and the girdle. Note the central ring of partly hollow spines. 66. External view of two valves connected via their linking spines. The arrow indicates the Müller step. Scale bars = 10 μm.
Figs 20–27 in Revision of the non-marine centric diatom flora (Bacillariophyta) of the sub-Antarctic Campbell Island (southern Pacific Ocean) with the descriptions of five new species
Figs 20–27. Angusticopula chilensis (Grunow) Houk et al. SEM. Campbell Island epitype population, sample BAS286. 20–22. SEM view of several valves in girdle view showing the ligulate, open, narrow girdle bands. The arrows indicate the ligulae in Fig. 20, the rimmed mantle edge in Fig. 21 and the fimbriate pars interior of the copulae in Fig. 22. 23. External view of a valve face. 24. External detail of the very fine striae and the small, rounded areolae. 25. Internal view of an entire valve showing the rimoportulae and the thick mantle. 26. External view of the mantle/valve face junction with several openings of the rimoportulae (arrows). 27. Internal detail of the valve mantle with some rimoportulae. Scale bars: 20–23, 25–26 = 10 μm; 24, 27 = 1 μm.
Figs 28–36 in Revision of the non-marine centric diatom flora (Bacillariophyta) of the sub-Antarctic Campbell Island (southern Pacific Ocean) with the descriptions of five new species
Figs 28–36. Angusticopula cosmica Goeyers & Van de Vijver sp. nov. LM. Campbell Island holotype population, sample BAS303 (BR-4577). 28. Frustule in girdle view showing the discoid chloroplasts. 29. Frustule in valve face view showing the discoid chloroplasts. 30–36. Several valves in valve face view showing clearly the submarginal ring of rimoportulae (arrows) and the striated valve face margin. Scale bar = 10 μm.
Figs 1–19 in Revision of the non-marine centric diatom flora (Bacillariophyta) of the sub-Antarctic Campbell Island (southern Pacific Ocean) with the descriptions of five new species
Figs 1–19. Angusticopula chilensis (Grunow) Houk et al. LM. Campbell Island epitype population, sample BAS286. 1–6, 12–13. Several frustules in girdle view. 5, 12. Internal valves. 7–11, 14–19. Several valves in valve face view clearly showing the marginal rimoportulae. Scale bar = 10 μm.
Figure 2. – A in First record of Carolines parrotfish (Calotomus carolinus) and king angelfish (Holacanthus passer) around the Clipperton Atoll-La Passion Island (North-Eastern Tropical Pacific)
Figure 2. – A: Photograph of the female adult individual of Calotomus carolinus with a close up showing the details of the separated teeth (B), that are specific to this species (Photos E. Clua). C: Photograph of the juvenile individual of Holacanthus passer (Photo S. Planes) along with an adult individual (D) (Photo H. Debelius) in its natural environment, showing the specific vertical white stripe, which is present both in adult and juvenile individuals.
Figure 1. – A in First record of Carolines parrotfish (Calotomus carolinus) and king angelfish (Holacanthus passer) around the Clipperton Atoll-La Passion Island (North-Eastern Tropical Pacific)
Figure 1. – A: Clipperton-La Passion Island (France), Tropical Eastern Pacific Ocean. B: Approximative location of the sighting and capture of the adult female individual of Calotomus carolinus (X) and the sighting of the male individual (X') on the 11 and 13 August 2018, respectively. Approximative location of the sighting and capture of the juvenile individual of Holacanthus passer (Y) (maps modified from "Cartes de l'île de la Passion" by C. Jost, 2015).
Fig. 5 in First Pacific Record of the Rare Scaleless Dragonfish Grammatostomias circularis (Teleostei: Stomiiformes: Stomiidae) from the Ogasawara Islands, Japan
Fig. 5. Map showing records of Grammatostomias circularis. Star, circle and triangles indicate present Pacific record, type locality (Morrow 1959) and other Atlantic records (Llois et al. 1991; Sutton and Hopkins 1996; Vinnichenko 1997; Moore et al. 2003; Judkins and Haedrich 2018), respectively. Detail localities of Atlantic records from Moore et al. (2003) and Judkins and Haedrich (2018) given in Museum of Comparative Zoology, Harvard University (2023a, b), respectively.
Fig. 3 in First Pacific Record of the Rare Scaleless Dragonfish Grammatostomias circularis (Teleostei: Stomiiformes: Stomiidae) from the Ogasawara Islands, Japan
Fig. 3. Lateral view of head and anterior part of body of preserved specimen of Grammatostomias circularis, HUMZ 210834, 131.4 mm SL (A, B). Arrows indicate luminous loop on lateral body surface. Loop outlined in white in (B), not outlined in (A).
Fig. 1 in First Pacific Record of the Rare Scaleless Dragonfish Grammatostomias circularis (Teleostei: Stomiiformes: Stomiidae) from the Ogasawara Islands, Japan
Fig. 1. Fresh specimen of Grammatostomias circularis, HUMZ 210834, 131.4 mm SL, west of Haha-jima Island, Ogasawara Islands, southern Japan.
Fig. 2 in First Pacific Record of the Rare Scaleless Dragonfish Grammatostomias circularis (Teleostei: Stomiiformes: Stomiidae) from the Ogasawara Islands, Japan
Fig. 2. Lateral view of head of Grammatostomias circularis, HUMZ 210834, 131.4 mm SL. Black and white teeth on premaxilla and dentary indicate fixed and depressible teeth, respectively. Arrows indicate main photophores. Small yellow dots indicate small luminous tissue areas. Dotted line indicates broken part of teeth. Abbreviations: SUO, suborbital photophore; PTO, postorbital photophore; OP, opercular photophore. Scale bar indicates 5 mm.
Fig. 4 in First Pacific Record of the Rare Scaleless Dragonfish Grammatostomias circularis (Teleostei: Stomiiformes: Stomiidae) from the Ogasawara Islands, Japan
Fig. 4. Lateral view of pectoral fin of preserved specimen of Grammatostomias circularis, HUMZ 210834, 131.4 mm SL. Numbers and arrows indicate pectoral-fin rays and their respective bases. Scale bar indicates 1 mm.
FIG. 6 in Nudibranch molluscs of Sakhalin Island, Northwestern Pacific: new records and descriptions of two new species
FIG. 6. Molecular phylogenetic hypothesis of the family Onchidorididae, Bayesian Inference, concatenated dataset of three markers (COI + 16S + H3), species-level clades and genera are collapsed to a single branch, except the genus Adalaria. Asterisk indicates a clade containing type species of the genus Adalaria. Numbers above branches indicate posterior probabilities from Bayesian Inference (values higher than 0.9 are shown), numbers below branches – bootstrap support from Maximum Likelihood (in %, values higher than 60% are shown). РИС. 6. МолекулЯрно-филогенетическое дерево длЯ семейства Onchidorididae, основании комбинированного датасета (COI + 16S + H3) при помоЩи байесовского аналиЗа, клады видового уровнЯ сколлапсированы, кроме клад иЗучаемых видов с о. Сахалин. ЗвеЗдочкой обоЗначена клада с типовым видом рода Adalaria. ЗначениЯ над ветвЯми обоЗначают апостериорные вероЯтности (покаЗаны ЗначениЯ более 0.9). ЗначениЯ под ветвЯми обоЗначают поддерЖки бутстрепа (в %, покаЗаны ЗначениЯ более 60%).
FIG. 5 in Nudibranch molluscs of Sakhalin Island, Northwestern Pacific: new records and descriptions of two new species
FIG. 5. Radular morphology of Adalaria boussoleana sp. nov., holotype MIMB48047 (SEM). A. Median and anterior radular portion. B. Lateral and inner marginal teeth. C, D. Rachidian teeth. E. Lateral and marginal teeth, posterior radular portion. F. Marginal teeth. Scale bars: A = 100 µm; B, E = 50 µm; C, D, F = 20 µm. РИС. 5. МорфологиЯ радулы Adalaria boussoleana sp. nov., голотип MIMB48047 (СЭМ). A. СреднЯЯ и переднЯЯ часть радулы. B. Латеральные и внутренние маргинальные Зубы. C, D. Центральные Зубы. E. Латеральные и маргинальные Зубы, ЗаднЯЯ часть радулы. F. Маргинальные Зубы. Масштабные линейки: A = 100 µm; B, E = 50 µm; C, D, F = 20 µm.
FIG. 4 in Nudibranch molluscs of Sakhalin Island, Northwestern Pacific: new records and descriptions of two new species
FIG. 4. External morphology and spicular complex of Adalaria boussoleana sp. nov, holotype MIMB48047. A. Living specimen, dorsal view. B. Living specimen, lateral view from right. C, D, E. Spicular complex, (C) dorsal view, (D) ventral view, (E) lateral view. F. Spicules of ctenidia. G. Spicules of rhinophore in the front part of the body, lateral view. H. Spicules of the stellular tract at the tubercle base, front part of the body. H. Monoaxone spicules. J. Diaxone spicules. K. Multiaxone spicules. Abbreviation: sc = spicules of ctenidia; sf = spicules of foot; sne = spicules of notum edge; srh = spicules of rhinophore; srht = spicules of tubercles on rhinophoral sheath; sst = spicule of stellular tract. Photo credits: A, B. Anastassya Maiorova.
FIG. 2 in Nudibranch molluscs of Sakhalin Island, Northwestern Pacific: new records and descriptions of two new species
FIG. 2. Reproductive system morphology of Cadlina spp. from Aniva Bay and Adalaria boussoleana sp. nov. from the Sea of Okhotsk. A. Cadlina umiushi, MIMB48042. B. Cadlina sp., MIMB48045. C. Adalaria boussoleana sp. nov. MIMB48047. Abbreviations: am = ampulla; bc = bursa copulatrix; fgm = female gland mass; p = penis; pr = prostate; psh = penial sheath; pvd = prostatic vas deferens; rs = receptaculum seminis; va = vagina; vd = vas deferens. Scale bars: A, B = 1 mm; C = 5 mm. РИС. 2. ПоловаЯ система Cadlina spp. иЗ Залива Анива и Adalaria boussoleana sp. nov. иЗ Охотского морЯ. A. Cadlina umiushi, MIMB48042. B. Cadlina sp., MIMB48045. C. Adalaria boussoleana sp. nov. MIMB48047. СокраЩениЯ: am = ампулла; bc = копулЯтивнаЯ сумка; fgm = комплекс Женских ЖелеЗ; p = пенис; pr = простата; psh = сумка пениса; pvd – простатическаЯ часть семЯпровода, rs – семЯприемник; va – вагина; vd – семЯпровод. Масштабные линейки: A, B = 1 мм; C = 5 мм.
FIG. 1 in Nudibranch molluscs of Sakhalin Island, Northwestern Pacific: new records and descriptions of two new species
FIG. 1. External and internal morphology of Cadlina spp. from Aniva Bay. A. Cadlina sp. MIMB48044. B. Cadlina sp., MIMB48045. C. Cadlina umiushi, MIMB48042. D. Cadlina umiushi, MIMB48043. E. Cadlina umiushi, MIMB48042, in natural environment. F. Cadlina sp., MIMB48045, labial cuticle rodlets. G. Cadlina sp., MIMB48045, radula. H. Cadlina umiushi, MIMB48043, labial cuticle rodlets. I. Cadlina umiushi, MIMB48043, radula. K, N, O. Cadlina sp., MIMB48045, anterior radular portion, details of teeth morphology. L, M, P. Cadlina umiushi, MIMB48043, anterior radular portion, details of teeth morphology. Scale bars: F, H, N = 20 µm; G, I = 250 µm; K = 100 µm; L = 10 µm; M, O, P = 50 µm. Photo credits: A – D. Anton Plaksin; E. Alexander Semenov. РИС. 1. ВнешнЯЯ и внутреннЯЯ морфологиЯ Cadlina spp. иЗ Залива Анива. A. Cadlina sp. MIMB48044. B. Cadlina sp., MIMB48045. C. Cadlina umiushi, MIMB48042. D. Cadlina umiushi, MIMB48043. E. Cadlina umiushi, MIMB48042 в естественной среде. F. Cadlina sp., MIMB48045, родлеты лабиальной кутикулы. G. Cadlina sp., MIMB48045, радула. H. Cadlina umiushi, MIMB48043, родлеты лабиальной кутикулы. I. Cadlina umiushi, MIMB48043, радула. K, N, O. Cadlina sp., MIMB48045, переднЯЯ часть радулы, детали морфологии Зубов. L, M, P. Cadlina umiushi, MIMB48043, переднЯЯ часть радулы, детали морфологии Зубов. Масштабные линейки: F, H, N = 20 µm; G, I = 250 µm; K = 100 µm; L = 10 µm; M, O, P = 50 µm. Авторство фотографий: A – D. Антон Плаксин; E. Александр Семенов.
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
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.