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298 results for “abundance distribution”
Figure 2 in Responses of pink shrimp Farfantepenaeus brasiliensis (Latreille, 1817) (Penaeoidea) to physico-chemical parameters in a marine protected area: changes in abundance and distribution after 20 years
Figure 2. Mean values (± standard deviation) of surface (ST) and bottom (BT) temperature, during the seasons of the period 1 (November/1988 to October/1989) and period 2 (November/2008 to October/ 2009) in Fortaleza Bay.
Figure 7 in Responses of pink shrimp Farfantepenaeus brasiliensis (Latreille, 1817) (Penaeoidea) to physico-chemical parameters in a marine protected area: changes in abundance and distribution after 20 years
Figure 7. Farfantepenaeus brasiliensis (Latreille, 1817). Number of individuals in each season, in the two sampled periods (period 1 = November/1988 to October/1989; period 2 = November/2008 to October/2009) in Fortaleza Bay.
FIGURE 9 in The reef fish assemblage of the Laje de Santos Marine State Park, Southwestern Atlantic: annotated checklist with comments on abundance, distribution, trophic structure, symbiotic associations, and conservation
FIGURE 9. Selected examples of symbiotic associations between reef fishes recorded at the Laje de Santos Marine State Park. The barber goby Elacatinus figaro cleans the head of the jubauna reeffish Chromis jubauna hovering close to the goby's cleaning station (a); the same cleaner species inspects the back of the nocturnal squirrelfish Holocentrus adscensionis that approached its cleaning station (b); juvenile spotfin hogfish Bodianus pulchellus cleans the mouth of the spotted moray Gymnothorax moringa (c); adult of the same hogfish species cleans the head of the jubauna reeffish (d); the wrasse Halichoeres sp. n. follows a group of the white trevally Pseudocaranx dentex, which stir sediment clouds while feeding on the sandy bottom (e); the dusky grouper Mycteroperca marginata closely follows the goldspotted snake eel Myrichthys ocellatus that nudges its head in rocky crevices (f); the spotfin hogfish follows the flying gurnard Dactylopterus volitans moving close to the bottom (g); two diskfish Remora remora attached near the mouth of the Atlantic manta Manta birostris (h).Photos: M. Andrade (h); A. Carvalho Filho (e-f); J. P. Krajewski (a); O.J. Luiz Jr. (c-d, g); A. de Luca Jr. (b).
FIGURE 8 in The reef fish assemblage of the Laje de Santos Marine State Park, Southwestern Atlantic: annotated checklist with comments on abundance, distribution, trophic structure, symbiotic associations, and conservation
FIGURE 8. Cluster analysis of habitat types at the Laje de Santos Marine State Park based on the similarity of species composition. The relative distribution of trophic categories in each habitat is shown in the graphs. CAR = Carnivore; MIF = Mobile Invertebrate Feeder; OMN = Omnivore; PIS = Piscivore; PLK = Planktivore; ROVH = Roving Herbivore; SIF = Sessile Invertebrate Feeder; TERH = Territorial Herbivore.
FIGURE 10 in The reef fish assemblage of the Laje de Santos Marine State Park, Southwestern Atlantic: annotated checklist with comments on abundance, distribution, trophic structure, symbiotic associations, and conservation
FIGURE 10. Targeted and endangered top-predators recorded at the Laje de Santos Marine State Park. The dusky groupers Mycteroperca marginata are very common in the area, but attain unusual large size and are largely unafraid of divers, contrarily to what happens at other unprotected sites (a); the goliath grouper Epinephelus itajara (b) and the cubera snapper Lutjanus cyanopterus (c). Several individuals of these two latter species have been seen at in the Laje de Santos in the last two years, after a period of more than ten years over which they remained unrecorded at the site. Photos: A. Carvalho-Filho (c); L. Cheidde (b); A. Valente (a).
FIGURE 3 in The reef fish assemblage of the Laje de Santos Marine State Park, Southwestern Atlantic: annotated checklist with comments on abundance, distribution, trophic structure, symbiotic associations, and conservation
FIGURE 3. Some abundant fish species at the Laje de Santos Marine State Park. The tomtate grunt Haemulon aurolineatum (a); adult and juvenile sergeant major Abudefduf saxatilis (b); the brown chromis Chromis multilineata (c); juvenile dusky damselfish Stegastes fuscus (d); intermediate individual of the jubauna reeffish Chromis jubauna (e); the silver porgy Diplodus argenteus (f); juvenile porkfish Anisotremus virginicus (g); the ringneck blenny Parablennius pilicornis (h). Photos: O.J. Luiz Jr, except (e) by L.F. Cassino.
FIGURE 6 in The reef fish assemblage of the Laje de Santos Marine State Park, Southwestern Atlantic: annotated checklist with comments on abundance, distribution, trophic structure, symbiotic associations, and conservation
FIGURE 6. Selected fish species that dwell in the deep reef (30-45 m) community at the Laje de Santos State Marine Park. The deep-reef wrasse Halichoeres sp.n. (a); the reeffish Chromis cf. enchrysura (b); the red porgy Pagrus pagrus (c); the Brazilian sandperch Pinguipes brasilianus (d); the sea basses Acanthistius brasilianus (e), A. patachonicus (f) and Dules auriga (g); the snowy grouper Hyporthodus niveatus (h). The former species (a) is probably a Brazilian endemic, closely related to the Northwestern Atlantic species H. bathyphilus. The distinctive status from its sister species is supported by molecular mtDNA analysis (L.A. Rocha pers. comm.).The last six species (c-h) ranges southward to temperate Patagonian rocky reefs. Photos: A. Carvalho-Filho (e-g); O.J. Luiz Jr. (a-d, h).
FIGURE 4 in The reef fish assemblage of the Laje de Santos Marine State Park, Southwestern Atlantic: annotated checklist with comments on abundance, distribution, trophic structure, symbiotic associations, and conservation
FIGURE 4. Relative proportions of geographic distribution types of the species observed at the Laje de Santos Marine State Park. Br = Brazilian Province; CE = Central Atlantic; CT = Circumtropical. EA = Eastern Atlantic; SCa = Southern Caribbean; SE = Southeastern Brazil; TA = Trans-Atlantic; WA = Western Atlantic.
FIGURE 5 in The reef fish assemblage of the Laje de Santos Marine State Park, Southwestern Atlantic: annotated checklist with comments on abundance, distribution, trophic structure, symbiotic associations, and conservation
FIGURE 5. Selected Brazilian endemic reef fish species that occur at the Laje de Santos Marine State Park. The barber goby Elacatinus figaro (a); the Brazilian yellowcheek wrasse Halichoeres dimidiatus, initial phase (b); the Brazilian wrasse Halichoeres brasiliensis, intermediate phase (c); the Noronha wrasse Thalassoma noronhanum, terminal male (d); the tuiupiranga parrotfish Sparisoma tuiupiranga, initial phase (e); Zelinda's parrotfish Scarus zelindae, initial phase (f); the reef parrotfish Sparisoma amplum, initial phase (g); the gray parrotfish Sparisoma axillare, terminal male (h). Photos: O.J. Luiz Jr, except (d) by I. Cavas.
Fig. 1 in Abundance and Seasonal Distribution of Predatory Coprophilous Argentine Rove Beetles (Coleoptera: Staphylinidae), and Their Effects on Dung Breeding Flies
Fig. 1. Predatory Staphylinidae collected in Castelar, Buenos Aires province: comparative numbers of the most common species per sampling 80 kg of cow dung.
Fig. 2 in Abundance and Seasonal Distribution of Predatory Coprophilous Argentine Rove Beetles (Coleoptera: Staphylinidae), and Their Effects on Dung Breeding Flies
Fig. 2. Predatory Staphylinidae collected in El Cadillal, Tucuman province: comparative numbers of the most common species per sampling date in 80 kg of cow dung.
Using species distribution modeling to generate relative abundance information in unstable territories: conservation of Felidae in Mexico
<p>Raw data used in the abovementioned manuscript</p>
Supplementary material for "Spatio-temporal modelling of abundance from multiple data sources in an integrated spatial distribution model"
<p><strong>Abstract</strong></p> <p><strong>Aim:</strong> In biodiversity monitoring, observational data are often collected in multiple, disparate schemes with greatly varying degrees of standardization and possibly at different spatial and temporal scales. Technical advances also change the type of data over time. The resulting heterogeneous data sets are often deemed to be incompatible. Consequently, many available data sets may be ignored in practical analyses. Here, we propose a more efficient use of disparate biodiversity data to assess species distributions and population trends.<br> <br> <strong>Location:</strong> Switzerland (Europe)<br> <br> <strong>Taxon:</strong> Birds</p> <p><strong>Methods: </strong>We developed an integrated, hierarchical species distribution model with a joint likelihood for all data sets using a shared state process (e.g., latent species abundance or occurrence), but distinct observation process for each data set. We show how the abundance submodel of a binomial N-mixture model can fuse four different data types (count, detection/non-detection, presence-only, and absence-only data) and enable improved inferences about spatio-temporal patterns in abundance. As case studies, we use data from multiple avian biodiversity monitoring schemes. In the first, the goal is estimating abundance-based species distribution maps. In the second, we infer trends in population abundance across time.</p> <p><strong>Results: </strong>Accuracy and precision of abundance estimates increased when combining data from different sources compared to using a single data source alone. This is particularly valuable when data from each single data source is too sparse for reliable parameter estimation.<br> Main conclusions: We show that exploiting the complementary nature of "cheap", but abundant, citizen-science data and less abundant, but more information-rich, data from structured monitoring programs might be ideal to estimate distribution and population trends more accurately, especially for rare species. Joint likelihoods allow to include a wide variety of different data sets to (1) combine all the available information and to (2) mitigate weaknesses of one by the strength of another.</p> <p> </p> <p> </p>
Environmental DNA provides quantitative estimates of Pacific hake abundance and distribution in the open ocean.
<p>All species inevitably leave genetic traces in their environments, and the resulting environmental DNA (eDNA) reflects the species present in a given habitat. It remains unclear whether eDNA signals can provide quantitative metrics of abundance on which human livelihoods or conservation successes depend. Here, we report the results of a large eDNA ocean survey (spanning 86,000 km<sup>2</sup> to depths of 500m) to understand the abundance and distribution of Pacific hake <em>Merluccius </em><em>productus</em>, the target of the largest finfish fishery along the west coast of the United States. We sampled eDNA in parallel with a traditional acoustic-trawl survey to assess the value of eDNA surveys at a scale relevant to fisheries management. Despite local differences, the two methods yield comparable information about the broad-scale spatial distribution and abundance. Furthermore, we find depth and spatial patterns of eDNA closely correspond to acoustic-trawl estimates for hake. We demonstrate the power and efficacy of eDNA sampling for estimating abundance and distribution and move the analysis eDNA data beyond sample-to-sample comparisons to management relevant scales. We posit that eDNA methods are capable of providing general quantitative applications that will prove especially valuable in data- or resource-limited contexts.</p>
Distribution. Lowland forests of W Brazil, E Peru, and N Bolivia, S of the Amazon River. Because of abundance of individuals in the C. castanea complex, hampering precise species identification in the field and in collections, a detailed assessment ofits distribution is still needed. in Phyllostomidae
Distribution. Lowland forests of W Brazil, E Peru, and N Bolivia, S of the Amazon River. Because of abundance of individuals in the C. castanea complex, hampering precise species identification in the field and in collections, a detailed assessment ofits distribution is still needed.
Distribution and abundance of intertidal sea urchins in South Africa
<p>This dataset contains data described in the paper entitled "Intertidal estimates of sea urchin abundance reveal congruence in spatial structure for a guild of consumers". Data include: (1) counts of intertidal sea urchins (<em>Diadema</em> cf. <em>savignyi</em>, <em>Echinometra mathaei</em>, <em>Parechinus angulosus</em>, <em>Stomopneustes variolaris</em>, and <em>Tripneustes gratilla</em>) made from 164 visits to 116 rocky shore sites across South Africa by six different observers; (2) GPS co-ordinates determined for every 1-km distance interval of the South African coastline starting from the mouth of the Orange River at the border of South Africa and Namibia; and (3) calculations of the amount of upstream and downstream rocky habitat from surveyed sites.</p>
Supplementary material 3 from: Saltmarsh DM, Bowser ML, Morton JM, Sirley Lang S, Shain D, Dial R (2016) Distribution and abundance of exotic earthworms within a boreal forest system in southcentral Alaska. NeoBiota 28: 67-86. https://doi.org/10.3897/neobiota.28.5503
Analysis dataset : Explanation note: This spreadsheet file contains all original measurements and derived metrics used in the analyses. It is arranged in a relational format. The sheet labeled site_data contains all site-level data, including original data and some derived metrics; the plot_data sheet contains plot-level data. The earthworm_lengths sheet contains all of the earthworm length measurements and, by implication, the occurrence data. The two response_data sheets hold data derived from the first three sheets that were used in subsequent analyses.
Supplementary material 2 from: Saltmarsh DM, Bowser ML, Morton JM, Sirley Lang S, Shain D, Dial R (2016) Distribution and abundance of exotic earthworms within a boreal forest system in southcentral Alaska. NeoBiota 28: 67-86. https://doi.org/10.3897/neobiota.28.5503
Specimen records : Explanation note: Occurrence data are provided for earthworm specimens collected. Data field definitions are those used by Arctos (http://arctos.database.museum/, http://arctosdb.org/).
Supplementary material 1 from: Saltmarsh DM, Bowser ML, Morton JM, Sirley Lang S, Shain D, Dial R (2016) Distribution and abundance of exotic earthworms within a boreal forest system in southcentral Alaska. NeoBiota 28: 67-86. https://doi.org/10.3897/neobiota.28.5503
Alaska earthworm records : Explanation note: Earthworm records from Alaska exclusive of data from the present study are compiled. All literature items cited are included in the References section of the manuscript.
Figures 10–13 in Six freshwater microturbellarian species (Platyhelminthes) in permanent wetlands of the Coastal Plain of southern Brazil: new records, abundance, and distribution
Figures 10–13. Photographs of specimens in vivo after squeeze preparation (10, 12) and diagrammatic reconstructions (11, 13) in dorsal view of species of Dalytyphloplanida recorded for the Coastal Plain of southern Brazil. 10, 11. Baicalellia evelinae. 12, 13. Gieysztoria chiqchi. Details of the penis stylet are shown in 11B and 13B.
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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
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OpenNeuro
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