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22,455 results for “Diversion”
Fig. 4 in Exploring the diversity and ecology of testate amoebae in West Siberian peatlands
Fig. 4. NMDS ordination of testate amoeba community data based on Bray-Curtis distance. Showing assemblages by site with symbol size proportional to moisture content of sample. Plot A shows data based on relative abundance (percentage) while Plot B shows data based on absolute abundance (concentration).
Data for: Landscape diversity promotes stable food web architectures in large rivers
<p>Uncovering relationships between landscape diversity and species interactions is crucial for predicting how ongoing land-use change and homogenization will impact the stability and persistence of communities. However, such connections have rarely been quantified in nature. We coupled high-resolution river sonar imaging with annualized energetic food webs to quantify relationships between habitat diversity, energy flux, and trophic interaction strengths in large-river food web modules that support the endangered Pallid Sturgeon. Our results demonstrate a clear relationship between habitat diversity and species interaction strengths, with more diverse foraging landscapes containing higher production of prey and a greater proportion of weak and potentially stabilizing interactions. Additionally, rare patches of large and relatively stable river sediments intensified these effects and further reduced interaction strengths by increasing prey diversity. Our findings highlight the importance of landscape characteristics in promoting stabilizing food-web architectures and provide direct relevance for future management of imperiled species in a simplified and rapidly changing world.</p>
A review of Appalachian Dasycerus Brongniart, and the recognition of cryptic diversity within Dasycerus carolinensis Horn (Coleoptera: Staphylinidae: Dasycerinae)
<p>Previous analyses have revealed deep divergences among populations of the relictual and enigmatic rove beetle, <em>Dasycerus carolinensis </em>Horn. New data from additional populations, molecular markers, and morphology unambiguously reveal this 'species' to represent a complex of closely related species, distinguishable by characters of the male genitalia, and corresponding closely to geographically coherent clades discovered by molecular analyses. Calibrated dating analyses show Appalachian <em>Dasycerus</em> to have been diverging in the region for more than 10 million years, yet largely respecting important biogeographic barriers in the region, such as the French Broad and Little Tennessee River drainages. In addition to discussing finer scale biogeographic patterns in the group, we formally recognize 9 new species from within what was formerly known as <em>D. carolinensis</em>: <em>D. virginiensis</em> <strong>sp. nov.</strong><em>, D. tuckasegee</em> <strong>sp. nov.</strong><em>, D. pacolet</em> <strong>sp. nov.</strong><em>, D. chattooga</em> <strong>sp. nov.</strong><em>, D. itseyi</em> <strong>sp. nov.</strong><em>, D. unicoi</em> <strong>sp. nov.</strong><em>, D. nikwasi</em> <strong>sp. nov.</strong><em>, D. egwanulti</em> <strong>sp. nov.</strong><em>, </em>and <em>D. gadalutsi</em> <strong>sp. nov.</strong><em>. </em>It was not, however, possible to assign all samples to one of these species, and specimens from some sparsely sampled outlying areas, northern Alabama and central Tennessee in particular, may represent additional species. </p>
Fig. 1. A, B in Late Silurian palynomorphs from the Precordillera of San Juan, Argentina: Diversity, palaeoenvironmental and palaeogeographic significance
Fig. 1. A, B. Geographic location of study areas. C, D. Geologic maps showing the fossil localities (asterisks). The northern and middle (C) and southern D) part of the Silurian–Devonian Basin. 1, Río Jáchal; 2, Río de las Chacritas; 3, Cerro La Chilca (this paper); 4, Quebrada Ancha (this paper).
Data for Hogan et al. 2024: "Basal bark herbicide treatment of Lonicera maackii (Amur honeysuckle) is effective regardless of application timing, with limited nontarget effects on native plant diversity"
<p>Data to accompany the following publication, currently in press:</p> <p>Hogan, K.F.E., K.Baker, E.M. Bach, N.A. Barber. Basal bark herbicide treatment of Lonicera maackii (Amur honeysuckle) is e ective regardless of application timing, with limited nontarget e ects on native plant diversity. In press, Ecological Solutions and Evidence</p> <p> </p> <p>Paper abstract: </p> <p><span>Managers tasked with controlling invasive species require effective methods that are quick and easy to use without inflicting extensive nontarget damage, while also being compatible with other scheduled management responsibilities. <em>Lonicera maackii</em> (Amur honeysuckle) is a non-native shrub that has invaded eastern and midwestern North American deciduous forests, altering ecosystem function and reducing biodiversity. </span><span>This study explores prescribed fire and seasonal basal applications of triclopyr ester as control methods and examines the extent of nontarget damage. We used paired-split plots to implement basal bark treatments in different seasons within burned and unburned units, and we tracked individual<em> L. maackii</em> to determine mortality and hyperlocal impacts of management. </span><span>Basal bark treatments killed 98.4% of <em>L. maackii</em> across seasonal timings. Nontarget plant cover immediately declined similarly for all herbicide application seasons, but the early- and late-spring treatments showing signs of recovery within four years. Meanwhile, species richness showed biologically small but statistically different declines across all treatment times. Prescribed fire did not impact <em>L. maackii </em>mortality or interact with herbicide efficacy. </span><span>Basal bark applications of triclopyr are an effective means of <em>L. maackii</em> control regardless of application timing, which allows managers to implement it at their convenience to avoid interfering with other management tasks that have time constraints.</span></p>
Figures 44–52 in Diversity and distribution of species of the planktonic dinoflagellate genus Alexandrium (Dinophyta) from the tropical and subtropical Mexican Pacific Ocean
Figures 44–52: Alexandrium tamarense, LM and SEM. (44) Cell in ventral view, LM. (45) Empty cell in ventral view with plate tabulation, LM. (46) Detail of the epitheca with some plates and ventral pore (arrow), LM. (47) Apical view, with plate tabulation, LM. (48, 49) Hypotheca with plate tabulation, including the posterior sulcal plate (Sp) and its pore (arrow), LM. (50) Epitheca with plate tabulation and the ventral pore (arrow), SEM. (51) Epitheca with plate tabulation, SEM. (52) Po with some plates surrounding it, and the ventral pore (arrow), SEM.
Figures 28–37 in Diversity and distribution of species of the planktonic dinoflagellate genus Alexandrium (Dinophyta) from the tropical and subtropical Mexican Pacific Ocean
Figures 28–37: Alexandrium monilatum, LM and SEM.(28, 29) A long chain (8 cells) and detail of that chain, respectively, LM. (30) Pair of cells in ventral view, SEM. (31) General outline of a cell, LM. (32) Cell in ventral view showing Po and 1′, SEM. (33) Detail of the cingulum and sulcus, showing the first apical plate (1′), SEM. (34) Apical view with plate tabulation, SEM. (35) Hypotheca showing the posterior sulcal plate (Sp) and its connecting pore (arrow), SEM. (36) Po plate with the conjunction pore and foramen, SEM. (37) Posterior sulcal plate showing the connection pore, LM.
Figures 20–21 in Diversity and distribution of species of the planktonic dinoflagellate genus Alexandrium (Dinophyta) from the tropical and subtropical Mexican Pacific Ocean
Figures 20–21: Alexandrium leei, LM. (20) Recently fixed cell in ventral view. (21) An empty cell in ventral view showing plate tabulation, arrow indicates the ventral pore in the first apical plate (1′).
Figures 9–11 in Diversity and distribution of species of the planktonic dinoflagellate genus Alexandrium (Dinophyta) from the tropical and subtropical Mexican Pacific Ocean
Figures 9–11: Alexandrium gaarderae, LM. (9, 10) Two different focal planes of a solitary cell in ventral view, showing the cell outline, cingulum and sulcus. (11) A cell in dorsal view.
Figures 2–8 in Diversity and distribution of species of the planktonic dinoflagellate genus Alexandrium (Dinophyta) from the tropical and subtropical Mexican Pacific Ocean
Figures 2–8: Alexandrium affine, LM. (2, 3) Chains of 8 and 3 cells, respectively. (4) An empty cell showing only the theca in ventral view. (5) Epitheca in ventral view showing the ventral pore (arrow) in the first apical plate (1′). (6) Epitheca with Po and 1′ showing the ventral pore (arrow). (7, 8) Po and posterior sulcal plate (Sp) (with a connecting pore), respectively.
Figures 67–69 in Diversity and distribution of species of the planktonic dinoflagellate genus Alexandrium (Dinophyta) from the tropical and subtropical Mexican Pacific Ocean
Figures 67–69: Alexandrium tropicale, LM. (67) Pair of cells. (68, 69) Epitheca and hypotheca with plate tabulation.
Figure 1 in Diversity and distribution of species of the planktonic dinoflagellate genus Alexandrium (Dinophyta) from the tropical and subtropical Mexican Pacific Ocean
Figure 1: Map with the sampling points where species of Alexandrium were found and the sites from which the established strains were isolated.
Figures 38–43 in Diversity and distribution of species of the planktonic dinoflagellate genus Alexandrium (Dinophyta) from the tropical and subtropical Mexican Pacific Ocean
Figures 38–43: Alexandrium pseudogonyaulax, LM. (38) Cell in ventral view. (39) Empty cell in ventral view, showing 1′, 4′, 6″ and the large ventral pore (arrow). (40) Detail of Po with the foramen. (41–43) Epitheca in ventral view showing 1′, 4′, 6″, and ventral pore (arrow).
Figures 22–24 in Diversity and distribution of species of the planktonic dinoflagellate genus Alexandrium (Dinophyta) from the tropical and subtropical Mexican Pacific Ocean
Figures 22–24: Alexandrium margalefii, LM. (22) General outline of a cell. (23) An empty cell in ventral view showing 1′ and 6″ and the ventral pore (arrow) in the first apical plate (1′). (24) Hypotheca with plate tabulation.
Figures 12–19 in Diversity and distribution of species of the planktonic dinoflagellate genus Alexandrium (Dinophyta) from the tropical and subtropical Mexican Pacific Ocean
Figures 12–19: Alexandrium globosum, LM. (12) Cell outline, with the central nucleus arrowed. (13, 14) Two different cells in ventro-lateral and ventral views, respectively, showing some plates of the epitheca and the sulcus. (15) Epitheca with plate tabulation, arrow indicates the location of the ventral pore in the first apical plate (1′). (16) Hypotheca showing plate tabulation. (17) Po plate. (18) Posterior sulcal plate (Sp). (19) Detail of some precingular, cingular and sulcal plates.
Figures 53–66 in Diversity and distribution of species of the planktonic dinoflagellate genus Alexandrium (Dinophyta) from the tropical and subtropical Mexican Pacific Ocean
Figures 53–66: Alexandrium tamiyavanichii, LM and SEM. (53) Chain of 6 cells,LM. (54) Detail of two cells with cellular content of a chain, LM. (55) Cells in ventral view showing the anterior sulcal plate (Sa), LM. (56) Two cells slightly twisted in a chain, SEM. (57) Cell in ventral view showing plates of the ventral area, LM. (58) Empty cell in ventral view showing plate tabulation, the ventral pore is arrowed, LM. (59) Epitheca in ventro-lateral view with plate tabulation, the left sulcal list is arrowed, SEM. (60, 61) Hypotheca with plate tabulation and pore at the posterior sulcal plate (Sp),SEM.(62, 63) Po and plates around it; the ventral pore is arrowed, LM. (64) Posterior sulcal plate (Sp) with pore (arrow), LM. (65, 66) Anterior sulcal plate, LM.
Figure 71 in Diversity and distribution of species of the planktonic dinoflagellate genus Alexandrium (Dinophyta) from the tropical and subtropical Mexican Pacific Ocean
Figure 71: Maximum-likelihood (ML) tree inferred from ITS sequences of Alexandrium. ML bootstrap and Bayesian posterior probabilities values are shown at branches. Bold letters indicate newly generated sequences in this study. Bootstrap values <50 and posterior probabilities <0.50 are not shown.
Figure 70 in Diversity and distribution of species of the planktonic dinoflagellate genus Alexandrium (Dinophyta) from the tropical and subtropical Mexican Pacific Ocean
Figure 70: Maximum-likelihood (ML) tree inferred from D1-D2 LSU rDNA sequences of Alexandrium. ML bootstrap and Bayesian posterior probabilities values are shown at branches. Bold letters indicate newly generated sequences in this study. Bootstrap values <50 and posterior probabilities <0.50 are not shown.
Fig. 12. Microporella umbonata Hincks, 1883 in Diversity and distribution of intertidal Microporella (Bryozoa: Cheilostomatida) from California
Fig. 12. Microporella umbonata Hincks, 1883, (NHMUK 1921.11.17.15), Departure Bay, Vancouver, Canada. A. Group of zooids, some with ovicells. B. Distal end of zooid, showing ovicell and avicularium. C. Close-up showing C-shaped ascopore with projecting tongue and denticulate margin, and concave proximal margin of orifice with triangular condyles. Scale bars: A = 400 µm; B = 100 µm; C = 40 µm.
Fig. 11 in Diversity and distribution of intertidal Microporella (Bryozoa: Cheilostomatida) from California
Fig. 11. Microporella umboniformis Soule, Soule & Chaney, 1995, holotype (SBMNH 671678) (previously AHF 213), Velero BS 1064, off Santa Barbara Island (33°30′1.00008″ N, 119°2′20.00004″ W), depth 49 m, California, USA. A. Group of zooids showing single or paired adventitious avicularia and five to six oral spines. Note the consistent absence of umbones lateral to orifice. B. Close-up of a zooid at colony margin showing six robust spines, paired avicularia and a short, pointed umbo proximal to ascopore. C. Close-up of orifice showing two small condyles at some distance from corners and proximal margin slightly concave between condyles as in M. umbonata. D. Close-up of C-shaped ascopore with denticulations. E. Group of zooids with some at the bottom showing larger pseudopores, likely due to the absence of the external layer of calcification, and some others with extensive secondary calcification. F. Close-up of one of the zooids in (E) showing larger pseudopores likely due to the lack of external frontal calcification. G–H. Close-ups of the same ovicell in frontal and lateral view, respectively. Note that the two proximalmost spines are retained. Scale bars: A = 500 µm; B–C = 200 µm; D = 50 µm; E = 1 mm; F–H = 250 µm.
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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.
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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.