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355 results for “northeast Atlantic”
Probabilistic linear inversion of satellite gravity gradient data applied to the northeast Atlantic
<p>% MATLAB scripts to calculate and plot figures as in manuscript by<br> %<br> % Minakov, A., & Gaina, C. (2021).<br> % Probabilistic linear inversion of satellite gravity gradient data applied<br> % to the northeast Atlantic. Journal of Geophysical Research: Solid Earth,<br> % 126, e2021JB021854. https://doi.org/10.1029/2021JB021854<br> % <br> % Last modified by alexamin@uio.no, 26/11/2021<br> %<br> % version v1.1<br> % </p> <p>% Contents of arhcive<br> % /data contains requiried and generated datasets <br> % /fig folder for output figures <br> % /plot scripts to produce figures <br> % /tools additional matlab tools and routines</p> <p>% Dataset in ..data/GOCE_NEATLANTIC is structure containing the full model<br> % <br> % Cm: [6670×6670 double] posterior model covariance matrix<br> % m: [29×23×10 double] mean denstity perturbation model<br> % Cd: [667×667 double] data covariance matrix<br> % d: [29×23 double] data vector (Trr)<br> % r: [1×10 double] distance<br> % lat: [29×1 double] latitute<br> % lon: [23×1 double] longitude<br> %<br> % Run /plot/fig_results.m to produce all figures <br> %<br> % Some scripts require GMT (Wessel et al. 2019) and SHBUNDLE (Sneeuw et al. 2018) software to be installed</p> <p>% and corresponding folders must be added to the matlab search path.</p> <p>% Also ScientificColorMaps7 by F. Crameri (2021) maybe required and have been included in the archive.</p>
Otolith annual growth increments for cod populations in the Northeast Atlantic
<p>Large-scale, climate-induced synchrony in the productivity of fish populations is becoming more pronounced in the world's oceans. As synchrony increases, a population's 'portfolio' of responses can be diminished, in turn reducing its resilience to strong perturbation. Here we argue that the costs and benefits of trait synchronization, such as the expression of growth rate are context dependent. Synchrony among individuals could actually be beneficial for populations if growth is optimized during favourable conditions and then declines under poor conditions when a broader portfolio of responses is needed. Importantly, growth synchrony among individuals within populations has seldom been measured, despite well-documented evidence of synchrony across populations. Here, we used century-scale time series of annual otolith growth to test for changes in growth synchronization among individuals within multiple populations of a marine keystone species (Atlantic cod, <em>Gadus morhua</em>). On the basis of 74,662 annual growth increments recorded in 13,749 otoliths, we detected a rising conformity in long-term growth rates within northeast Atlantic cod populations in response to both favorable growth conditions and a large-scale, multidecadal mode of climate variability similar to the East Atlantic Pattern. The within-population synchrony was distinct from the across-population synchrony commonly reported for large-scale environmental drivers. Climate-linked, among-individual growth synchrony was also identified in other Northeast Atlantic pelagic, deep-sea and bivalve species. We hypothesize that growth synchrony buffers marine populations to changing climate and growth conditions through its effect on the phenotypic expression of growth diversity, and thus provides an unexpected, but pervasive and stabilizing impact on marine population productivity.</p>
Northeast Atlantic species distribution shifts over the last two decades
<p>Marine species are widely shifting their distributions in response to global changes, and it is commonly expected they will move northward and to greater depths to reach cooler, less disturbed habitats. However, local manifestations of global changes, anthropogenic pressures, and species characteristics may lead to unanticipated and varied responses by individual species. In this regard, the Celtic-Biscay Shelf is a particularly interesting study system because it has historically been heavily fished and occurs at the interface between two distinct biogeographic provinces, its community is thus comprised of species with diverse thermal preferenda. In the context of rapidly warming temperatures and intense fishery exploitation, we investigated the distribution shifts of 93 taxa (65 Actinopteri, 10 Elasmobranchii, 11 Cephalopoda, 5 Malacostraca, and 2 Bivalvia), which were sampled annually from 1997 to 2020 during a scientific bottom trawl survey. We used a set of 11 complementary spatial indices to quantify taxon distribution shifts over time. Then, we explored the relative effect of taxon abundance, fishing pressure, and climatic conditions on taxon's distribution shift when a significant shift was detected. We observed that 56% of the taxa significantly shifted. Not all taxa will necessarily shift northward and to deeper areas, as is often expected. Two opposite patterns were identified: taxa either moving deeper and to the southeast, or moving closer to the surface and to the northwest. The main explanatory factors were climate change (short- and long-term temperatures) and taxon abundance. Fishing pressure was the third, but still significant, explanatory factor of taxa of greater commercial importance. Our research highlights that taxa are displaying complex distribution shifts in response to the combined anthropogenic disturbances and underscores the need to conduct regional studies to better understand these responses at the ecosystem scale to develop more suitable management plans and policies.</p>
Figure 1 in Range extension of the Atlantic herring Clupea harengus (Clupeiformes: Clupeidae) southern part of the Northeast Atlantic Ocean
Figure 1. – Map showing the location of records of Clupea harengus in the European Atlantic waters. The black dots constitute the historical captures reported in GBIF and the red dots represent the present records in the North of Spain between 2009 and 2018.
Fig. 2 in Sharing of termites (Blattodea: Isoptera) between sugarcane matrices and Atlantic Forest fragments in Northeast Brazil
Fig. 2. Species richness (A) and number of termite encounters (B) per food group of two Atlantic Forest fragments and adjacent sugarcane fields of two plantations in Northeast Brazil.Us., Usina; AF, Atlantic Forest; S, sugarcane field; I, feeding group I; II, feeding group II; III, feeding group III; IV, feeding group IV (Donovan et al., 2001).
Fig. 1 in Sharing of termites (Blattodea: Isoptera) between sugarcane matrices and Atlantic Forest fragments in Northeast Brazil
Fig. 1. Non-metric multidimensional scaling for termite assemblages of two Atlantic Forest fragments and adjacent sugarcane plantations. Usina são João (A) and Usina São José (B). •, Atlantic Forest. Δ, sugarcane field.
FIGURE 1 in Fossil Mysticeti from the Pleistocene of Santa Maria Island, Azores (Northeast Atlantic Ocean), and the prevalence of fossil cetaceans on oceanic islands
FIGURE 1. Top: location maps. Insert: location of the Azores archipelago in the Northeast Atlantic and location of Santa Maria Island, within the Azores Archipelago. Bottom: map of Santa Maria with the location of the most important Mio-Pliocene and Pleistocene (MIS 5e) outcrops— 1, Ponta dos Frades; 2, Cré; 3, Lagoinhas; 4, Ponta do Norte; 5, Ponta Negra; 6, Ponta do Cedro; 7, Ponta do Castelo; 8, Pedra-que-pica; 9, Vinha Velha; 10, Pedrinha da Cré; 11, Baía de Nossa Senhora; 12, Malbusca; 13, West fault of Malbusca; 14, Ichnofossil's cave; 15, Praia do Calhau; 16, Macela; 17, Prainha; 18, Figueiral; 19, Pedreira do Campo; 20, Airport.
FIGURE 2 in Fossil Mysticeti from the Pleistocene of Santa Maria Island, Azores (Northeast Atlantic Ocean), and the prevalence of fossil cetaceans on oceanic islands
FIGURE 2. Right mandibular corpus (DBUA-F 1079) belonging to a medium-large size Mysticeti. 1, dorsal view; 2, lateral view; and 3, inset magnification of unknown bone modification to the lateral surface (denoted by arrows). Abbreviation "mc" indicates the mandibular canal. Thick broken arrows show passages of the mandibular canal through the fragment.
FIGURE 3 in Fossil Mysticeti from the Pleistocene of Santa Maria Island, Azores (Northeast Atlantic Ocean), and the prevalence of fossil cetaceans on oceanic islands
FIGURE 3. Detailed composite stratigraphic column at Praia do Calhau. The numbers depicted in filled circles correspond to facies 1–7, which are described in Ávila et al. (2015).
Linked collectors and determiners for: A new deepwater species of Calliopiidae, Halirages helgae (Crustacea, Amphipoda), with a synoptic table to Halirages species from the northeast Atlantic.
Natural history specimen data linked to collectors and determiners held within, "A new deepwater species of Calliopiidae, Halirages helgae (Crustacea, Amphipoda), with a synoptic table to Halirages species from the northeast Atlantic". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/9a23e0ce-ffdb-4ec1-9796-403ffb9ada90">https://bionomia.net/dataset/9a23e0ce-ffdb-4ec1-9796-403ffb9ada90</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/9a23e0ce-ffdb-4ec1-9796-403ffb9ada90">https://gbif.org/dataset/9a23e0ce-ffdb-4ec1-9796-403ffb9ada90</a>. Formatted as a Frictionless Data package.
Figure 49 in Rissoidae (Mollusca: Gastropoda) from northeast Atlantic seamounts
Figure 49. Bathymetric distribution of the Porosalvania species on the Meteor group seamounts. Number of symbols (1–4) for each species reflects abundance classes 1–10, 10–99, 100–500,.500 respectively.
Figure 56 in Rissoidae (Mollusca: Gastropoda) from northeast Atlantic seamounts
Figure 56. Benthonellania fayalensis (Watson, 1886). (A) Shell from Ampère bank, Victor Hensen sta. VH97/97 (800 m), actual size 1.90 mm; (B) protoconch of another shell, same locality; (C) detail of microsculpture, same as (A). Scale bars: 100 Mm (B); 50 Mm (C).
Figure 59. Schwartziella peregrina n in Rissoidae (Mollusca: Gastropoda) from northeast Atlantic seamounts
Figure 59. Schwartziella peregrina n. sp. (A) Holotype (sh.) from Meteor seamount, DW152 (470 m), actual size 6.28 mm; (B) protoconch of a paratype, same locality; (C) microsculpture of teleoconch whorl. Scale bars: 100 Mm (B); 50 Mm (C).
Figure 58. Rissoina meteoris n in Rissoidae (Mollusca: Gastropoda) from northeast Atlantic seamounts
Figure 58. Rissoina meteoris n. sp., paratype (living specimen) from Meteor seamount, DW136 (305 m), actual size of complete shell 7.15 mm.
Figure 57. Rissoina meteoris n in Rissoidae (Mollusca: Gastropoda) from northeast Atlantic seamounts
Figure 57. Rissoina meteoris n. sp. (A) Holotype (sh.) from Meteor seamount, DW152 (470 m), actual size 8.25 mm; (B) protoconch of a paratype, same locality; (C) microsculpture of teleoconch whorl; (D, E) operculum of another paratype from Meteor seamount, DW136 (305 m), actual size 1.1 mm; (F) partial view of the radula (laterals and marginals missing on the right), showing faint cusps developed on the upper part of outer marginals, same specimen as (D). Scale bars: 100 Mm (B); 50 Mm (C); 10 Mm (F).
Figure 55. Porosalvania hydrobiaeformis n in Rissoidae (Mollusca: Gastropoda) from northeast Atlantic seamounts
Figure 55. Porosalvania hydrobiaeformis n. sp. (A) Holotype from Atlantis seamount, DW261 (1340 m), actual size 2.26 mm; (B) paratype, same locality, actual size 2.15 mm; (C) protoconch of another paratype, same locality; (D) microsculpture, same as (B); (E, F) shells from Hyères seamount, DW203 (845 m), actual size 2.22 mm; (G) protoconch, same shell as (E); (H) microsculpture, same shell as (E). Scale bars: 100 Mm (C, G); 50 Mm (D, H).
Figure 52. Porosalvania diaphana n in Rissoidae (Mollusca: Gastropoda) from northeast Atlantic seamounts
Figure 52. Porosalvania diaphana n. sp. (A) Holotype (sh.) from Plato seamount, DW242 (710 m), actual size 2.30 mm; (B) paratype (sh.), same locality, actual size 2.16 mm; (C) protoconch of the holotype; (D) microsculpture. Scale bars: 100 Mm (C); 50 Mm (D).
Figure 51. Porosalvania semisculpta n in Rissoidae (Mollusca: Gastropoda) from northeast Atlantic seamounts
Figure 51. Porosalvania semisculpta n. sp. (A) Holotype (sh.) from Cruiser seamount, DW237 (670 m), actual size 2.14 mm; (B) paratype (sh.), same locality, actual size 2.14 mm; (C) protoconch of another paratype (spm.) from DW238; (D) microsculpture of the holotype. Scale bars: 100 Mm (C); 50 Mm (D).
Figure 44. Porosalvania solidula n in Rissoidae (Mollusca: Gastropoda) from northeast Atlantic seamounts
Figure 44. Porosalvania solidula n. sp. (A) Holotype (living specimen) from Meteor seamount, DE140 (308 m), actual size 2.34 mm; (B) detail of head and propodium; (C) detail of opercular lobes and metapodium.
Figure 43. Porosalvania solidula n in Rissoidae (Mollusca: Gastropoda) from northeast Atlantic seamounts
Figure 43. Porosalvania solidula n. sp. from Meteor seamount, DW152 (470 m). (A) Paratype (spm.), actual size 2.82 mm; (B–D) paratypes (sh.), same locality, actual sizes 2.84, 2.50, and 3.10 mm; (E) operculum of another paratype, actual size 0.95 mm; (F) protoconch of another paratype; (G) microsculpture. Scale bars: 100 Mm (F); 50 Mm (G).
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
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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.