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298 results for “dominant species”
Fig. 2 in Seasonal Changes In Species Diversity And Dominance Structure In Communities Of Oribatid Mites (Sarcoptiformes, Oribatei) In Megalopolis Green Areas
Fig. 2. Seasonal fluctuations of numbers of registered species, mean aerial daytime temperature and relative humidity (iv — April, v — May, vi — June, vii — July, viii — August, ix — September).
Opposing community assembly patterns for dominant and non-dominant plant species in herbaceous ecosystems globally
<p>Biotic and abiotic factors interact with dominant plants —the locally most frequent or with the largest coverage— and non-dominant plants differently, partially because dominant plants modify the environment where non-dominant plants grow. For instance, if dominant plants compete strongly, they will deplete most resources, forcing non-dominant plants into a narrower niche space. Conversely, if dominant plants are constrained by the environment, they might not exhaust available resources but instead may ameliorate environmental stressors that usually limit non-dominants. Hence, the nature of interactions among non-dominant species could be modified by dominant species. Furthermore, these differences could translate into a disparity in the phylogenetic relatedness among dominants compared to the relatedness among non-dominants. By estimating phylogenetic dispersion in 78 grasslands across five continents, we found that dominant species were clustered (e.g., co-dominant grasses), suggesting dominant species are likely organized by environmental filtering, and that non-dominant species were either randomly assembled or overdispersed. Traits showed similar trends for those sites (<50%) with sufficient trait data. Furthermore, several lineages scattered in the phylogeny had more non-dominant species than expected at random, suggesting that traits common in non-dominants are phylogenetically conserved and have evolved multiple times. We also explored environmental drivers of the dominant/non-dominant disparity. We found different assembly patterns for dominants and non-dominants, consistent with asymmetries in assembly mechanisms. Among the different postulated mechanisms, our results suggest two complementary hypotheses seldom explored: (1) Non-dominant species include lineages adapted to thrive in the environment generated by dominant species. (2) Even when dominant species reduce resources to non-dominant ones, dominant species could have a stronger positive effect on some non-dominants by ameliorating environmental stressors affecting them, than by depleting resources and increasing the environmental stress to those non-dominants. These results show that the dominant/non-dominant asymmetry has ecological and evolutionary consequences fundamental to understand plant communities.</p>
Supplementary material 1 from: Hejda M (2013) Do species differ in their ability to coexist with the dominant alien Lupinus polyphyllus? A comparison between two distinct invaded ranges and a native range. NeoBiota 17: 39-55. https://doi.org/10.3897/neobiota.17.4317
Entry data for the univariate models with species richness as a response variable. (doi: 10.3897/neobiota.17.4317.app1) File format: Micrisoft Excell document (xls). :
Рис. 5. АналиЗ линейной коррелЯции параметров макробентоса от доминируюЩей фракции в пробе грунта (А, Б) и глубины (В, Г). Fig. 5. Analysis of the linear correlation of macrobenthos parameters with the dominant fraction in the bottom sample (А, Б) and depth (В, Г). in Species composition and distribution of bivalve mollusks in plankton and benthos in Nevelsky Strait in summer
Рис. 5. АналиЗ линейной коррелЯции параметров макробентоса от доминируюЩей фракции в пробе грунта (А, Б) и глубины (В, Г). Fig. 5. Analysis of the linear correlation of macrobenthos parameters with the dominant fraction in the bottom sample (А, Б) and depth (В, Г).
Fig. 1 in Ecomorphology and resource use by dominant species of tropical estuarine juvenile fishes
Fig. 1. Map indicating the location of the study area (rio Mamanguape estuary) on the coast of northeastern Brazil. CMR= Camboa da Marcação; CMA= Camboa dos Macacos; CTA= Camboa dos Tanques; CPO= Curva do Pontal Beach; PON= Pontal Beach; CAM= Campina Beach.
Fig. 2. A in Ecomorphology and resource use by dominant species of tropical estuarine juvenile fishes
Fig. 2. A representative species, Menticirrhus littoralis, with sixteen morphological variables: total length (TL), standard length (SL), body height (BH), mean body height (MHB), body width (BW), head length (HL), head height (HH), relative eye height (ERH), pectoral fin length (PFL), pectoral fin width (PFW), caudal fin height (CFH), caudal peduncle length (CPL), caudal peduncle height (CPH), caudal peduncle width (CPW), mouth width (WM) and mouth height (HM).
Рис. 1. Карта-схема района иссΛеΑования и места сбора материаΛа: 1 — район косы НюкΛя; 2 — бухта Гертнера; 3 — бухта Батарейная; 4 — бухта Нагаева; 5 — Амахтонский заΛив, вбΛизи устья р. Армань in Species diversity and dominant species of the littoral area fishes of Tauysk bay, the Sea of Okhotsk
Рис. 1. Карта-схема района иссΛеΑования и места сбора материаΛа: 1 — район косы НюкΛя; 2 — бухта Гертнера; 3 — бухта Батарейная; 4 — бухта Нагаева; 5 — Амахтонский заΛив, вбΛизи устья р. Армань
Рис. 2.Соотношение виΑов рыб на ΛитораΛи Тауйской губы: А — по их зоогеографической принаΑΛежности; Б — по принаΑΛежности к ихтиоцену. Обозначения см. в табΛице 1 Fig. 2. Ratio of fish species in the littoral zone of Tauysk Bay: А — according to their zoogeographic affiliation; Б — by belonging to the ichthyocene. Designations are similar to those in Table 1. in Species diversity and dominant species of the littoral area fishes of Tauysk bay, the Sea of Okhotsk
Рис. 2.Соотношение виΑов рыб на ΛитораΛи Тауйской губы: А — по их зоогеографической принаΑΛежности; Б — по принаΑΛежности к ихтиоцену. Обозначения см. в табΛице 1 Fig. 2. Ratio of fish species in the littoral zone of Tauysk Bay: А — according to their zoogeographic affiliation; Б — by belonging to the ichthyocene. Designations are similar to those in Table 1.
Рис. 1. Δинамика чисΛенности меΛких мΛекопитающих в Цасучейском бору: 1 — суммарная чисΛенность (особей / 100 циΛинΑро-суток); Αоминирующие виΑы: 2 — забайкаΛьский хомячок, 3 — бурозубка тунΑряная, 4 — бурозубка крошечная, 5 — поΛёвка монгоΛьская, 6 — поΛёвка РаΑΑе, 7 — красная поΛёвка; A — остепнённый сосняк, B — первичная гарь, С — старая гарь, D — повторная гарь; стреΛка указывает время прохожΑения пожара. Ось X — гг., ось Y — чисΛенность Fig. 1. Population dynamics of small mammals in the Tsasucheysky Pine Forest: 1 — total abundance (individuals / 100 cylinder-days); dominant species: 2 — Cricetulus pseudogriseus, 3 — Sorex tundrensis, 4 — S. minutissimus, 5 — Alexandromys mongolicus, 6 — Lasiopodomys raddei, 7 — Myodes rutilus; A — steppe pine forest, B — primary burns site, С — old burns site; D — repeated burns site; the arrow indicates the time of the fire. The X-axis shows years; the Y-axis shows population density in Population dynamics of small mammals after spring fires in steppe pine forest
Рис. 1. Δинамика чисΛенности меΛких мΛекопитающих в Цасучейском бору: 1 — суммарная чисΛенность (особей / 100 циΛинΑро-суток); Αоминирующие виΑы: 2 — забайкаΛьский хомячок, 3 — бурозубка тунΑряная, 4 — бурозубка крошечная, 5 — поΛёвка монгоΛьская, 6 — поΛёвка РаΑΑе, 7 — красная поΛёвка; A — остепнённый сосняк, B — первичная гарь, С — старая гарь, D — повторная гарь; стреΛка указывает время прохожΑения пожара. Ось X — гг., ось Y — чисΛенность Fig. 1. Population dynamics of small mammals in the Tsasucheysky Pine Forest: 1 — total abundance (individuals / 100 cylinder-days); dominant species: 2 — Cricetulus pseudogriseus, 3 — Sorex tundrensis, 4 — S. minutissimus, 5 — Alexandromys mongolicus, 6 — Lasiopodomys raddei, 7 — Myodes rutilus; A — steppe pine forest, B — primary burns site, С — old burns site; D — repeated burns site; the arrow indicates the time of the fire. The X-axis shows years; the Y-axis shows population density
Figure 3 in Organic farming and moderate tillage change the dominance and spatial structure of soil Collembola communities but have little effects on bulk abundance and species richness
Figure 3. Abundance, number of species and Berger-Parker index in samples in different management types and fields. Colors show fields. Boxplots show data distribution (n = 81 per field), horizontal lines represent the medians.
FIGURE 2 in Taxonomy, ecology and biogeographical trends of dominant benthic foraminifera species from an Atlantic-Mediterranean estuary (the Guadiana, southeast Portugal)
FIGURE 2. Scanning electron micrographs of the foraminifera specimens. Scale bar equals 100 µm. 1-3- Three different specimens of Polysaccammina ipohalina Scott, 1976b, illustrating the differences in size and form. In all specimens it is possible to see attached organic matter; 4-5- Polysaccammina hyperhalina Medioli, Scott, and Petrucci, 1983. 4- complete specimen of P. hyperhalina; 5- aperture view; 6- specimen with several side branches; 7-10- different sized specimens of Ammovertellina sp.; 11-14- various specimens of Reophax nana Rhumbler, 1913; 15-17- Leptohalysis scottii (Chaster, 1892); 15 and 16- side view of two complete specimens; 17- detail on the agglutination of the last chamber; 18- complete specimen of Ammobaculites exiguus Cushman and Brönnimann, 1948b; 19- Ammobaculites sp. with the uncoiled portion broken; 20-22- Ammotium salsum (Cushman and Brönnimann, 1948a); 20- best specimen; 21- smaller specimen; 22- aperture detail; 23- Ammotium sp.; 24-26- different specimens of Miliammina fusca (Brady, 1870); 27-28- Miliammina obliqua Heron-Allen and Earland, 1930; 27- view of the interio-marginal arch of the aperture; 29-30- Arenoparrella mexicana (Kornfeld, 1931); 29- ventral side with view to main aperture and supplementary apertures; 30- dorsal side with view to supplementary apertures; 31-32- Deuterammina eddystonensis Brönnimann and Whittaker, 1990; 31- dorsal view; 32- ventral view; 33-35- Jadammina macrescens (Brady, 1870); 33- dorsal view; 34- ventral view; 35- dorsal view of a deformed test.
FIGURE 1 in Taxonomy, ecology and biogeographical trends of dominant benthic foraminifera species from an Atlantic-Mediterranean estuary (the Guadiana, southeast Portugal)
FIGURE 1. Location of the study area; 1) Geographical context of the Guadiana River basin in the Iberian Peninsula (Europe). Adapted from chguadiana.es (2012). Coordinate system: Datum ETRS89 UTM Zone 30N; 2) Study area: Map of the Guadiana Estuary with site locations.
FIGURE 7 in Taxonomy, ecology and biogeographical trends of dominant benthic foraminifera species from an Atlantic-Mediterranean estuary (the Guadiana, southeast Portugal)
FIGURE 7. Distribution patterns of the common to dominant species in the samples collected in winter along a distance-to-sea and elevation gradients (in relation to MSL).
FIGURE 4 in Taxonomy, ecology and biogeographical trends of dominant benthic foraminifera species from an Atlantic-Mediterranean estuary (the Guadiana, southeast Portugal)
FIGURE 4. Scanning electron micrographs of the foraminifera specimens. Scale bar equals 100 µm. 1-4- different sized specimens of Bolivina ordinaria Phleger and Parker, 1952, new name; 5- Buliminella elegantissima (d'Orbigny, 1839b); 6-7- Cornuspira involvens (Reuss 1850); 8-10- Miliolid sp1; 8- apertural view; 9- front view; 10- back view; 11- 13- Miliolid sp2; 11- apertural view; 12- front view; 13- back view; 14-16- Miliolid sp3; 14- front view; 15- apertural view; 16- back view; 17-18- Miliolid sp4; 17- apertural view; 18- front view; 19-21- Miliolid sp5; 19- apertural view; 20- front view; 21- back view; 22-23- Miliolid sp6; 22- front and apertural view; 23- back view; 24-26- Miliolid sp7; 24- front view; 25- apertural view; 26- front and apertural view; 27-29- Miliolid sp8; 27- front view; 28- apertural view; 29- front view of a smaller specimen.
FIGURE 8 in Taxonomy, ecology and biogeographical trends of dominant benthic foraminifera species from an Atlantic-Mediterranean estuary (the Guadiana, southeast Portugal)
FIGURE 8. Distribution patterns of the common to dominant species in the samples collected in summer along a distance-to-sea and elevation gradients (in relation to MSL).
FIGURE 3 in Taxonomy, ecology and biogeographical trends of dominant benthic foraminifera species from an Atlantic-Mediterranean estuary (the Guadiana, southeast Portugal)
FIGURE 3. Scanning electron and light microscope micrographs of the foraminifera specimens. Scale bar equals 100 µm except where noted otherwhise; 1-2- Jadammina macrescens (Brady, 1870); 1- supplementary apertures view; 2- detail of supplementary apertures (scale bar = 50 µm); 3-4- Lepidodeuterammina plymouthensis Brönnimann and Whittaker, 1990; 3- dorsal view; 4- ventral view; 5-8- Lepidodeuterammina ochracea (Williamson, 1858); 5- dorsal view; 6- ventral view; 7- dorsal view of a smaller specimen; 8- ventral view of a smaller specimen; 9-10- Portatrochammina sp.; 9- dorsal view; 10- ventral view; 11-13- Siphotrochammina sp.; 11- dorsal side with inter-cameral foramen view; 12- dorsal view of a smaller specimen, also with inter-cameral foramen; 13- ventral view of a smaller specimen; 14-16- Tiphotrocha comprimata Saunders, 1957; 14- dorsal view; 15- ventral view; 16- individual strongly attached to a sea-grass leaf; detail of a Pinus pollen grain at the center of the leaf; 17-21- Trochammina inflata (Montagu, 1808); 17- dorsal view; 18- ventral view; 19- ventral view with umbilical tube detail; 20- microspheric form dorsal view; 21- microspheric form ventral view; 22- Eggerelloides scaber (Williamson, 1858); 23-25- Textularia earlandi Parker, 1952; 23- apertural view; 24- lateral view; 25- profile view with aperture in detail; 26-29- Discorinopsis aguayoi (Bermúdez, 1935); 26- scanning electron dorsal view; 27- scanning electron ventral view; 28- light microscope dorsal view; 29- light microscope ventral view.
FIGURE 6 in Taxonomy, ecology and biogeographical trends of dominant benthic foraminifera species from an Atlantic-Mediterranean estuary (the Guadiana, southeast Portugal)
FIGURE 6. RDA attribute plot representing the distribution and abundance of the dominant species in Guadiana Estuary according to elevation and distance-to-sea variables.
FIGURE 5 in Taxonomy, ecology and biogeographical trends of dominant benthic foraminifera species from an Atlantic-Mediterranean estuary (the Guadiana, southeast Portugal)
FIGURE 5. Scanning electron and light microscope micrographs of the foraminifera specimens. Scale bar equals 100 µm. 1- Lamarckina haliotidea (Heron-Allen and Earland, 1911) ventral view; 2-3- Asterigerinata mamilla (Williamson, 1858); 2- dorsal view; 3- ventral view; 4-5- Discorbis sp.; 4- dorsal view; 5- ventral view; 6-7- Helenina anderseni (Warren, 1957); 6- dorsal view; 7- ventral view; 8- Haynesina depressula (Walker and Jacob, 1798) side view; 9- Haynesina germanica (Ehrenberg, 1840) side view; 10- Elphidium advenum (Cushman, 1922) side view; 11- Elphidium excavatum (Terquem, 1875) side view; 12-15- Elphidium wiliamsoni Haynes, 1973; 12- side view in light microscope image; 13- side view in scanning electron image; 14- profile view in scanning electron image; 15- side view of a smaller specimen in scanning electron image; 16-18- side view of different size Elphidium gerthi Van Voorthuysen, 1957; 19-21- Elphidium oceanensis (d'Orbigny, 1826); 19- side view in scanning electron image; 20- profile view in scanning electron image; 21- side view in light microscope image; 22- Elphidium poeyanum (d'Orbigny, 1826) side view; 24-27- Ammonia sp1; 24- dorsal view; 25- profile view; 26- ventral view; 27- dorsal view in light microscope image; 28-31- Ammonia sp2 (Ammonia aberdoveyensis Haynes, 1973); 28- dorsal view; 29- profile view; 30- ventral view; 31- dorsal view in light microscope image; 32-35- Ammonia sp3 (Ammonia aberdoveyensis Haynes, 1973); 32- dorsal view; 33- profile view; 34- ventral view; 35- dorsal view in light microscope image.
Text-fig. 8. Plant fossils from Primorye, Partizansk coal basin, Frentsevka Formation, Bolshoy Kuvshin locality, early – middle Albian. a – undetermined species, spec. IBSS 320-137; b, c – Asiatifolium elegans G.SUN, S.X.GUO et SHAO L.ZHENG: b – spec. IBSS 320-86, c – spec. IBSS 320-8. Scale bar 0.5 cm. in An Angiosperm Dominated Herbaceous Community From The Early - Middle Albian Of Primorye, Far East Of Russia
Text-fig. 8. Plant fossils from Primorye, Partizansk coal basin, Frentsevka Formation, Bolshoy Kuvshin locality, early – middle Albian. a – undetermined species, spec. IBSS 320-137; b, c – Asiatifolium elegans G.SUN, S.X.GUO et SHAO L.ZHENG: b – spec. IBSS 320-86, c – spec. IBSS 320-8. Scale bar 0.5 cm.
Figures 238–243 in High species diversity in one of the dominant groups of spiders in East African montane forests (Araneae: Pholcidae: Buitinga n. gen., Spermophora Hentz)
Figures 238–243. 'Spermophora' usambara. Left male palp in prolateral (238) and retrolateral (239) views, modified hairs distally on male chelicerae (240), male chelicerae in frontal view (241), and cleared epigynum in ventral (242) and dorsal (243) views. 'e': embolus; 'hp': hinged process. Scale bars = 0.3 mm (238, 239), 0.2 mm (242, 243), 0.1 mm (241), 50 Mm (240).
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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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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
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