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151 results for “Nest site”
Soil nutrients sampled in and around harvester ant nests in three habitats at the Jornada Basin LTER site, 1987
This dataset contains soil nutrient content measurements from harvester ant nests and reference soils in three nesting habitats at the Jornada Basin LTER site in 1987. The purpose of this investigation was to answer three general questions: 1. How does the modification of soil properties and the ratios of resources (e.g., water-N) by ants alter species assemblages of winter annual plants at the edge of the ant nests? 2. How does the "spring cleaning", clipping, predation or herbivory by ants affect success of the winter annual plants at the edge of ant nests? 3. Are there significant differences in the floristic assemblage and belowground standing crop (root biomass) between the edge of ant nest and the surrounding unaffected soils? Five ant nests and paired (non-nest) reference soils were sampled in three study locations. This dataset contains chemical analyses for the soil samples collected for each of the three sites, including total nitrogen, (ammonium, nitrate), inorganic phosphorus, and exchangeable cations (K+, Na+, Ca2+ and Mg2+). Also included is below ground biomass from five ant nests for each of the three sites. This study was completed in 1987.
Soil organic matter content sampled in and around harvester ant nests in three habitats at the Jornada Basin LTER site, 1987
This dataset contains soil organic matter content measurements from harvester ant nests and reference soils in three nesting habitats at the Jornada Basin LTER site in 1987. The purpose of this investigation was to answer three general questions: 1. How does the modification of soil properties and the ratios of resources (e.g., water-N) by ants alter species assemblages of winter annual plants at the edge of the ant nests? 2. How does the "spring cleaning", clipping, predation or herbivory by ants affect success of the winter annual plants at the edge of ant nests? 3. Are there significant differences in the floristic assemblage and belowground standing crop (root biomass) between the edge of ant nest and the surrounding unaffected soils? Five ant nests and paired (non-nest) reference soils were sampled in three study locations. This dataset contains percent (%) organic matter content measured by mass-loss on combustion in a muffle furnace. This study was completed in 1987.
Gravimetric soil water content sampled in and around harvester ant nests in three habitats at the Jornada Basin LTER site, 1987
This dataset contains gravimetric soil water content measurements from harvester ant nests and reference soils in three nesting habitats at the Jornada Basin LTER site in 1987. The purpose of this investigation was to answer three general questions: 1. How does the modification of soil properties and the ratios of resources (e.g., water-N) by ants alter species assemblages of winter annual plants at the edge of the ant nests? 2. How does the "spring cleaning", clipping, predation or herbivory by ants affect success of the winter annual plants at the edge of ant nests? 3. Are there significant differences in the floristic assemblage and belowground standing crop (root biomass) between the edge of ant nest and the surrounding unaffected soils? Five ant nests and paired (non-nest) reference soils were sampled in three study locations on a monthly schedule from January to May 1987. This dataset contains percent (%) soil water content in these samples determined using the gravimetric method. This study was completed in 1987.
Atlantic ghost crab (Ocypode quadrata) burrow counts at shorebird nests and randomly available sites on Metompkin Island, Virginia, 2022
Atlantic ghost crabs (Ocypode quadrata) are predators of beach-nesting shorebirds, their nests, and their chicks on the United States' Atlantic and Gulf coasts. Ghost crabs may also disturb birds, altering their foraging, habitat use, or nest and brood attendance patterns. Shorebird conservation strategies often involve predator and disturbance management to improve reproductive success, but efforts rarely target ghost crabs. Despite the threat to shorebird reproductive success, ghost crabs are a poorly understood part of the beach ecosystem and additional knowledge about ghost crab habitat selection is needed to inform shorebird conservation. We monitored ghost crab activity, defined as burrow abundance, throughout the shorebird breeding season on Metompkin Island, Virginia, an important breeding site for piping plovers (Charadrius melodus) and American oystercatchers (Haematopus palliatus). We counted burrows at shorebird nests and random points throughout the shorebird breeding season and tested whether ghost crab activity was greater at shorebird nest sites than random sites. We observed burrows at all nest sites in our study area (n = 63 nests), but found fewer burrows at nest sites than random sites. Ghost crabs may avoid shorebird nest sites due to aggressive defensive behaviors from incubating adults or differences in microhabitat characteristics selected by shorebirds versus ghost crabs. We also tested the effects of date, air temperature, habitat type, and shell cover on the abundance of ghost crab burrows. We found that while burrows were present across the barrier island landscape, there were more burrows in sandy habitats with sparse to little shell cover and in and behind the dunes relative to the beach and beach-front berm. Ghost crab activity increased later in the shorebird breeding season and as air temperature increased. Understanding when and where ghost crabs are most likely to be active in the landscape can aid decision-making to benefit imperi
Data from: Nest orientation and proximity to snow patches are important for nest site selection of a cavity breeder at high elevation
<p><strong>Abstract</strong></p> <p>Reproductive timing and location are central to breeding success across taxa. Many species have evolved specific strategies to cope with environmental variability including shifts in timing of reproduction tracking resource availability or selecting favourable nest location. In mountain ecosystems, complex topography and pronounced seasonality result in particularly high spatiotemporal variability of environmental conditions, and the risk of climate-induced resource mismatches is particularly acute given that temperature is increasing more rapidly than in the lowlands.<br>We investigated how a high-elevation passerine, the white-winged snowfinch <em>Montifringilla nivalis</em>, selects its nest site in relation to nest cavity characteristics, habitat composition and snow condition. We used a combination of field habitat mapping and satellite remote sensing to compare occupied nest sites with randomly selected pseudo-absence sites. In the first half of the breeding season, snowfinches preferred nest cavities oriented towards the morning sun while they used cavities proportional to their availability later on. This preference might relate to the nest microclimate offering eco-physiological advantages, namely thermoregulatory benefits for incubating adult and nestlings under the harsh conditions typically encountered in the alpine environment. Nest sites were consistently located in areas with greater-than-average snow cover at hatching date, likely mirroring the foraging preferences for tipulid larvae developing in meltwater along snowfields. Due to the particularly rapid climate shifts typical of mountain ecosystems, spatiotemporal mismatches between foraging grounds and nest sites are expected in the future, which may negatively influence demographic trajectories of the species concerned. The installation of well-designed nest boxes in optimal habitat configurations could to some extent help mitigate this risk.</p> <p> </p>
Supplementary material for "Playback experiments highlight the importance of nearest-neighbor distance and social information for nest site selection in the House Martin (Delichon urbicum)"
<p><strong>Abstract</strong></p> <p>Understanding nest site selection is crucial for species conservation. Bird conservation often involves installing nesting aids to increase nest site availability and induce colonization of unoccupied sites. However, prospecting individuals must find nesting aids, which may be facilitated by social information. Here, we investigated the effectiveness of artificial nests and playback in the declining, migratory House Martin <em>Delichon urbicum</em>. We selected unoccupied sites with artificial nests along a distance gradient to occupied sites and broadcasted conspecific vocalizations during prospection times of House Martins in both the post- and the following pre-breeding periods. Visitation and colonization rates increased considerably in proximity to occupied sites. Playback during the post-breeding and pre-breeding periods enhanced visitation rates, while pre-breeding-only and post-breeding-only playback had smaller positive effects. Colonization rate increased exclusively with pre-breeding-only playback. Colonized playback and non-playback sites had similar breeding success, indicating that playback did not create ecological traps by attracting House Martins to suboptimal sites. Hence, broadcasting conspecific vocalizations informs prospecting birds of nest site availability, thereby increasing visitation, and to some degree, colonization of unoccupied House Martin sites. To boost colonization, we recommend installing artificial House Martin nests within approximately 500 meters of occupied sites and using playback of conspecific vocalizations.</p>
Fig. 3 in Black Tern Nest-Site Fidelity In An Unstable Habitat: A Preliminary Study
Fig. 3. The distribution of Black Tern colonies at the northern part of Kaniv water reservoir. The only colonies shown here are those where the returns of birds, which had been marked in 2012–2019, were recorded.
Data from: Does the history of option quality affect nest site choice in the acorn ant?
<p>During decision−making, animals consider not only the current but also the past quality of options. For example, when humans evaluate performance (e.g. sales) of employees, they do not only consider the average performance but also the trend of performance ascending performance is often viewed as more favorable than descending performance. In our study, we test if non-human animals have a similar bias when they are evaluating options using house-hunting by the acorn ant, <em>Temnothorax curvispinosus</em>, as our model system. Our data show that when nest-site quality is static over time, ant colonies tend to prefer the nest site which was better (i.e. darker) between two nest options. However, when the nest quality changes—one improves and the other worsens—over time, more colonies choose the low-quality, but improving, nest than the high-quality, but worsening, nest. These results suggest that a continuous change of option quality may influence evaluation. We discuss alternative explanations for our results, possible mechanisms and potential ecological benefits for keeping track of the nest-site quality.</p>
Рис. 1. РаспреΑеΛение кΛючевых мест гнезΑования ΑаΛьневосточного аиста в Хабаровском крае в 1999–2000 гг. (по: Δарман и Αр. 2000b; Сурмач, Шибаев 2000) Fig. 1. Distribution of key nesting sites of the Oriental White Stork in the Khabarovsk Territory in 1999–2000 (based on: Darmanet al. 2000b; Surmach, Shibaev 2000) in The number and distribution of the Oriental White Stork Ciconia boyciana Swinhoe, 1873 in the Khabarovskiy Region
Рис. 1. РаспреΑеΛение кΛючевых мест гнезΑования ΑаΛьневосточного аиста в Хабаровском крае в 1999–2000 гг. (по: Δарман и Αр. 2000b; Сурмач, Шибаев 2000) Fig. 1. Distribution of key nesting sites of the Oriental White Stork in the Khabarovsk Territory in 1999–2000 (based on: Darmanet al. 2000b; Surmach, Shibaev 2000)
FIGURE 7. Termite nests from site D in Termite nests in eolian backshore settings: An unusual record throughout the Quaternary in the Neotropical realm
FIGURE 7. Termite nests from site D. General view of nests close to the shoreline (a); grass around the mounds. Detail of big epigeal portion in D.6 (b). Details of the cast nest D.4 (c). Detail of passages of epigeal portion and the surrounding roots in the bottom portion (d). Schematic disposition of termite nests in cross-section (e) and plan view (f); the closest nest is ca. 58 m from shoreline.
FIGURE 4. Termite nests from site B in Termite nests in eolian backshore settings: An unusual record throughout the Quaternary in the Neotropical realm
FIGURE 4. Termite nests from site B. General view of nest B.1 (a) and proximity to the shoreline; sparse vegetation of grasses and ferns around the mound. Detailed view of B.1 nest cast (b) and lateral projections mostly inside roots. Detail of the passages inside roots (c), cast by resin. Schematic disposition of termite nests in cross-section (d) and in plan view (e); closest nest is nearly 50 m from shoreline, where the nests are concentrated in interdune settings in the frontal dune zone.
FIGURE 5. Termite nests from site C in Termite nests in eolian backshore settings: An unusual record throughout the Quaternary in the Neotropical realm
FIGURE 5. Termite nests from site C. General view of nest C.1, next to a stream (a); it is seem a diverse vegetation close to the permanent stream, but the termite nests are restrict to grass. Detail of nest C.1 surrounded by grass (b). Detail of the inner passages of nest C.2 surrounded by grass roots (c). Schematic disposition of the termite nests in cross-section (d) and plan view (e); closest nest is approximately 170 m from the shoreline, where the nests are concentrated in the wet interdune zone.
Fig. 1 in High winter survival rate of acorn ants inside artificial nest sites (Hymenoptera: Formicidae)
Fig. 1 – Changes in temperature recorded near the nest sites with the Temnothorax crassispinus ant colonies localised at ground level, as well as near the nest sites about 5 cm below ground level and 1.5 m above ground level. The experiment lasted from 4 December 2020 to 24 February 2021, but only the temperatures for February are presented. The higher temperatures recorded at ground level and 5 cm below ground level, compared to the temperatures 1.5 above ground level, were probably affected by heating from the sun; the data loggers situated 1.5 m above ground level were attached to trees on the north side, so they were not affected by the sun.
Fig. 2 in New high altitude nesting site of White Stork (Ciconia ciconia Linnaeus, 1758) in Bulgaria
Fig. 2. The nest of White Stork (Ciconia ciconia) in Yundola village, 13.07.2016. (Photograph: G. Gruychev).
Fig. 1 in New high altitude nesting site of White Stork (Ciconia ciconia Linnaeus, 1758) in Bulgaria
Fig. 1. White Stork (Ciconia ciconia) at the nest in Yundola village in 16.07.2015 (Photograph: S. Stoyanov).
Fig. 1 in The use of root plates for nesting sites by Anthophora abrupta (Hymenoptera: Apidae) may be common within forested habitats
Fig. 1. Root plate examples from Green River Game Lands (North Carolina), Fontainebleau State Park (Louisiana), and Mud Creek (Alabama). Map depicts physiographic provinces and relative locations of root plate sites. Upper right picture shows close-up of Anthophora abrupta turrets from BS root plate. BS = Bluebonnet Swamp Nature Center (Louisiana), FB = Fontainebleau State Park (Louisiana), GR = Green River Game Lands (North Carolina), MC = Mud Creek (Alabama), SL = Salem Lake (North Carolina).
Figure 1. Study area and collections sites. A in Botanical composition and structure of hummingbird nests in different habitats from northwestern Patagonia (Argentina)
Figure 1. Study area and collections sites. A, Puerto Blest; B, Saltillo las Nalcas; C, Llao-Llao; D, Cascada la Virgen on Route 258; E, northern margin of Lake Moreno; F, downtown Bariloche city; G, Arroyo Verde in Villa Traful; H, Leleque; I, Lake Queñi.
Fig. 3 in Nesting ecology and nest site selection of green-legged partridge
Fig. 3. Location of a green-legged partridge nest between the buttress of a large tree. The arrow shows the location of nest.
Fig. 1. Precipitation during 2009 and 2010 in Nesting ecology and nest site selection of green-legged partridge
Fig. 1. Precipitation during 2009 and 2010 and the nesting period for the same two years of green-legged partridge at Khao Yai National Park.
Fig. 2 in Nesting ecology and nest site selection of green-legged partridge
Fig. 2. Hourly variations (mean ± SD) in departure and return times of incubating female green-legged partridge (N = 6) at the Mo Singto Plot, Khao Yai National Park during 2009 and 2010.
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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
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.