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141 results for “niche partitioning”
Niche partitioning within a population of seasnakes is constrained by ambient thermal homogeneity and small prey size
<p>In many populations of terrestrial snakes, an individual's phenotype (e.g. body size, sex, colour) affects its habitat use. One cause for that link is gape-limitation, which can result in larger snakes eating prey that are found in different habitats. A second factor involves thermoregulatory opportunities, whereby individuals select habitats based upon thermal conditions. These ideas predict minimal intraspecific variation in habitat use in a species that eats small prey and lives in a thermally uniform habitat – such as the seasnake <i>Emydocephalus annulatus</i>, that feeds on tiny fish eggs and lives in inshore coral-reefs. To test that prediction, we gathered data on water depths and substrate attributes for 1475 sightings of 128 free-ranging <i>E. annulatus</i> in a bay near Noumea, New Caledonia. Habitat selection varied among individuals, but with a preference for coral-dominated substrates. A snake's body size and reproductive state affected its detectability in deep water, but overall habitat use was not linked to snake body size, colour morph, sex, or pregnancy. A lack of ontogenetic shifts in habitat use allows extreme philopatry in <i>E. annulatus</i>, thereby reducing gene flow among populations and potentially, delaying recolonization after local extirpation events.</p>
Figure 4 from: Rohner PT, Haenni J-P, Giesen A, Busso JP, Schäfer MA, Püchel-Wieling F-W, Blanckenhorn WU (2019) Temporal niche partitioning of Swiss black scavenger flies in relation to season and substrate age (Diptera, Sepsidae). Alpine Entomology 3: 1-10. https://doi.org/10.3897/alpento.3.28366
Figure 4 Number of individuals of seven common sepsid species as a function of dung age (in hours (h)). While S.cynipsea, flavimana and orthocnemis are disproportionally often observed on fresh dung, S.duplicata and Saltellasphondylii gain in relative abundance over time. (Note the different scaling of the y-axes; data from Püchel 1993; S.duplicata data only qualitative.)
Figure 3 from: Rohner PT, Haenni J-P, Giesen A, Busso JP, Schäfer MA, Püchel-Wieling F-W, Blanckenhorn WU (2019) Temporal niche partitioning of Swiss black scavenger flies in relation to season and substrate age (Diptera, Sepsidae). Alpine Entomology 3: 1-10. https://doi.org/10.3897/alpento.3.28366
Figure 3 Non-metric multidimensional scaling (NMDS) visualizing seasonal variation in species composition as well as differences between cattle pastures (triangles) and dung piles (circles). The smaller the distance between two samples, the greater their similarity.
Figure 2 from: Rohner PT, Haenni J-P, Giesen A, Busso JP, Schäfer MA, Püchel-Wieling F-W, Blanckenhorn WU (2019) Temporal niche partitioning of Swiss black scavenger flies in relation to season and substrate age (Diptera, Sepsidae). Alpine Entomology 3: 1-10. https://doi.org/10.3897/alpento.3.28366
Figure 2 Seasonal patterns of species diversity, expressed by the first three Hill indices, for sepsid communities captured by sweep netting on cow pastures, dung piles or Malaise capturing in a peat bog. 0D equals species richness, 1D represents the exponential Shannon entropy (evenness) that can be interpreted as the number of typical species, while 2D resembles the reciprocal form of the Gini-Simpson Index that relates to the number of highly abundant species. We only plotted samples with 20 or more individuals (all years combined). The size of the points is proportional to the number of individuals present in the sample.
Figure 1 from: Rohner PT, Haenni J-P, Giesen A, Busso JP, Schäfer MA, Püchel-Wieling F-W, Blanckenhorn WU (2019) Temporal niche partitioning of Swiss black scavenger flies in relation to season and substrate age (Diptera, Sepsidae). Alpine Entomology 3: 1-10. https://doi.org/10.3897/alpento.3.28366
Figure 1 Relative abundance of males of different sepsid species across the season on pastures (all years pooled). Patterns are indicated separately for high (blue) and low (green) altitude sites. Species trapped in a Malaise trap are shown in black. Point size is proportional to the total number of males contained in the respective sample.
Niche partitioning shaped herbivore macroevolution through the early Mesozoic dataset
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Intraspecific dietary variation in niche partitioning within a community of ecologically similar snakes
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Data from: A three-dimensional computer simulation of feeding behaviour in red and giant pandas relates skull biomechanics with dietary niche partitioning
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Data from: Niche partitioning in a sympatric cryptic species complex
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Data from: Functional niche partitioning in Therizinosauria provides new insights into the evolution of theropod herbivory
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Niche partitioning within a population of seasnakes is constrained by ambient thermal homogeneity and small prey size
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Temporal and spatial niche partitioning in a retrotransposon community of the Drosophila melanogaster genome
GEO Series GSE274394. Drosophila melanogaster. 8 samples. Type: Genome binding/occupancy profiling by high throughput sequencing; Non-coding RNA profiling by high throughput sequencing.
Data from: Bridge under troubled water: turbulence and niche partitioning in fish foraging
The coexistence of competing species relies on niche partitioning. Competitive exclusion is likely inevitable at high niche overlap, but such divide between competitors may be bridged if environmental circumstances displace competitor niches to enhance partitioning. Foraging-niche dimension can be influenced by environmental characteristics, and if competitors react differently to such conditions, coexistence can be facilitated. We here experimentally approach the partitioning effects of environmental conditions by evaluating the influence of water turbulence on foraging-niche responses in two competing fish species, Eurasian perch Perca fluviatilis and roach Rutilus rutilus, selecting from planktonic and benthic prey. In the absence of turbulence, both fish species showed high selectivity for benthic chironomid larvae. R. rutilus fed almost exclusively on zoobenthos, whereas P. fluviatilis complemented the benthic diet with zooplankton (mainly copepods). In turbulent water, on the other hand, the foraging-niche widths of both R. rutilus and P. fluviatilis increased, while their diet overlap simultaneously decreased, caused by 20% of the R. rutilus individuals turning to planktonic (mainly bosminids) prey, and by P. fluviatilis increasing foraging on littoral/benthic food sources. We show that moderate physical disturbance of environments, such as turbulence, can enhance niche partitioning and thereby coexistence of competing foragers. Turbulence affects prey but not fish swimming capacities, with consequences for prey-specific distributions and encounter rates with fish of different foraging strategies (pause-travel P. fluviatilis and cruise R. rutilus). Water turbulence and prey community structure should hereby affect competitive interaction strengths among fish species, with consequences for coexistence probability as well as community and system compositions.
Figure 4 from: Mwatawala M, Virgilio M, Joseph J, De Meyer M (2015) Niche partitioning among two Ceratitis rosa morphotypes and other Ceratitis pest species (Diptera, Tephritidae) along an altitudinal transect in Central Tanzania. In: De Meyer M, Clarke AR, Vera MT, Hendrichs J (Eds) Resolution of Cryptic Species Complexes of Tephritid Pests to Enhance SIT Application and Facilitate International Trade. ZooKeys 540: 429-442. https://doi.org/10.3897/zookeys.540.6016
Figure 4 - Catches of Ceratitis rosa morphotypes along the transect (EGO lure).
Figure 3 from: Mwatawala M, Virgilio M, Joseph J, De Meyer M (2015) Niche partitioning among two Ceratitis rosa morphotypes and other Ceratitis pest species (Diptera, Tephritidae) along an altitudinal transect in Central Tanzania. In: De Meyer M, Clarke AR, Vera MT, Hendrichs J (Eds) Resolution of Cryptic Species Complexes of Tephritid Pests to Enhance SIT Application and Facilitate International Trade. ZooKeys 540: 429-442. https://doi.org/10.3897/zookeys.540.6016
Figure 3 - Catches of Ceratitis rosa along the transect (different lures).
Figure 2 from: Mwatawala M, Virgilio M, Joseph J, De Meyer M (2015) Niche partitioning among two Ceratitis rosa morphotypes and other Ceratitis pest species (Diptera, Tephritidae) along an altitudinal transect in Central Tanzania. In: De Meyer M, Clarke AR, Vera MT, Hendrichs J (Eds) Resolution of Cryptic Species Complexes of Tephritid Pests to Enhance SIT Application and Facilitate International Trade. ZooKeys 540: 429-442. https://doi.org/10.3897/zookeys.540.6016
Figure 2 - Catches of Ceratitis species along the transect.
Figure 1 from: Mwatawala M, Virgilio M, Joseph J, De Meyer M (2015) Niche partitioning among two Ceratitis rosa morphotypes and other Ceratitis pest species (Diptera, Tephritidae) along an altitudinal transect in Central Tanzania. In: De Meyer M, Clarke AR, Vera MT, Hendrichs J (Eds) Resolution of Cryptic Species Complexes of Tephritid Pests to Enhance SIT Application and Facilitate International Trade. ZooKeys 540: 429-442. https://doi.org/10.3897/zookeys.540.6016
Figure 1 - Catches of the three Ceratitis species by lures.
Data from: Bridge under troubled water: turbulence and niche partitioning in fish foraging
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Figure 1 in Body size estimation and evolution in metriorhynchid crocodylomorphs: implications for species diversification and niche partitioning
Figure 1. Comparative view of four fossil crocodylomorphs, showing the skeletal variation of this clade: A, Pristichampsus geiseltalensis GM 8001, an unguligrade terrestrial eusuchian; B, Alligatorellus beaumonti BSPG 1937-I-26, a small-bodied semi-aquatic atoposaurid; C, Crocodilaemus robustus NHM 40344 (cast of holotype), a heavily armoured semi-aquatic pholidosaurid; and D, Cricosaurus suevicus SMNS 9808, a pelagic metriorhynchid. Note the large size of the head of Cricosaurus relative to its body length, its hypocercal tail, reduction of pectoral and pelvic girdles, hydrofoil-like forelimbs, and lack of osteoderms. Scale bars = 100 mm.
Crops grown in mixtures show niche partitioning in spatial water uptake
<p>Data set for the study <strong>Crops grown in mixtures show niche partitioning in spatial water uptake</strong></p>
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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)
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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
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