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24 results for “Grus grus”
Figure 1 in Status Survey of Black-necked Crane Grus nigricollis Przhevalsky, 1876 in Ladakh, India
Figure 1. Map of the study area is showing the locations surveyed and occurrence of Black-necked Cranes in different wetland of Eastern Ladakh.
Figure 4 in The partitioning of temporal movement patterns of breeding red-crowned crane (Grus japonensis) induced by temperature
Figure 4. Multiple comparisons of the moving distance among the four RCC breeding subseasons (M: mating, B: brooding, W: wading, G: growing).
Figure 3 in The partitioning of temporal movement patterns of breeding red-crowned crane (Grus japonensis) induced by temperature
Figure 3. Principal component analysis for the climatic variables and the moving distance. The first axis (PC1) explains 31.44% of total variation, and the second axis (PC2) accounts for 22.44% of total variation.
Magellan/M2FS Spectroscopy of Tucana 2 and Grus 1
<p>supplementary data products, including all sky-subtracted spectra from individual targets, as well as random draws from posterior PDFs for model parameters (see enclosed README file)</p>
Figure 5 in Status Survey of Black-necked Crane Grus nigricollis Przhevalsky, 1876 in Ladakh, India
Figure 5. Resting by Black-necked Crane at Tso Kar Lake.
Figure 3. A in Status Survey of Black-necked Crane Grus nigricollis Przhevalsky, 1876 in Ladakh, India
Figure 3. A pair of Black-necked Crane at Tso kar Lake.
Figure 10 in Status Survey of Black-necked Crane Grus nigricollis Przhevalsky, 1876 in Ladakh, India
Figure 10. Escape behaviour by a pair of Black-necked Crane in a wetland located near Loma Bridge.
Figure 9 in Status Survey of Black-necked Crane Grus nigricollis Przhevalsky, 1876 in Ladakh, India
Figure 9. Preening by Black-necked Crane at Hanley.
Figure 8. A in Status Survey of Black-necked Crane Grus nigricollis Przhevalsky, 1876 in Ladakh, India
Figure 8. A pair of Black-necked Crane near Loma Bridge.
Figure 4 in Status Survey of Black-necked Crane Grus nigricollis Przhevalsky, 1876 in Ladakh, India
Figure 4. Foraging by Black-necked Crane at Tso kar Lake.
Figure 1 in The partitioning of temporal movement patterns of breeding red-crowned crane (Grus japonensis) induced by temperature
Figure 1. The study area of Zhalong Reserve. Inset shows its location in northeastern China.
Figure 1 in Vigilance behavior of common crane Grus grus in flocks during spring, summer, and autumn
Figure 1. Vigilance proportion of each social unit.
Figure 3 in Vigilance behavior of common crane Grus grus in flocks during spring, summer, and autumn
Figure 3. Vigilance proportion of juveniles in each period.
Figure 2 in Vigilance behavior of common crane Grus grus in flocks during spring, summer, and autumn
Figure 2. Vigilance proportion of nonparents in each flock size.
Shortgrass Steppe site, station USGS Breeding Bird Survey Route 17305, Nunn, CO, study of animal abundance of Grus canadensis in units of numberPerSightingEffort on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Shortgrass Steppe (SGS) contains animal abundance of Grus canadensis measurements in numberPerSightingEffort units and were aggregated to a yearly timescale.
Data from: Disturbance and predation risk influence vigilance synchrony of Black-necked Cranes Grus nigricollis, but not as strongly as expected
<p>Animals monitor surrounding dangers independently or cooperatively (synchronized and coordinated vigilance), with independent and synchronized scanning being prevalent. Coordinated vigilance, including unique sentinel behaviour, is rare in nature, since it is time-consuming and limited in terms of benefits. No evidence showed animals adopt alternative vigilance strategies during antipredation scanning yet. Considering the non-independent nature of both synchronization and coordination, we assessed whether group members could keep alert synchronously or in a coordinated fashion under different circumstance. We studied how human behaviour and species-specific variables impacted individual and collective vigilance of globally threatened black-necked cranes (<i>Grus nigricollis</i>) and explored behaviour-based wildlife management. We tested both predation risk (number of juveniles in group) and human disturbance (level and distance) effects on individual and collective antipredation vigilance of black-necked crane families. Adults spent significantly more time (proportion and duration) on scanning than juveniles, and parents with juveniles behaved more vigilant. Both adults and juveniles increased time allocation and duration on vigilance with observer proximity. Deviation between observed and expected collective vigilance varied with disturbance and predation risk from zero, but not significantly so, indicating that an independent vigilance strategy was adopted by black-necked crane couples. The birds showed synchronized vigilance in low disturbance areas, with fewer juveniles and far from observers; otherwise, they scanned in coordinated fashion. The collective vigilance, from synchronized to coordinated pattern, varied as a function of observer distance that helped us determine a safe distance of 403.75m for the most vulnerable family groups with two juveniles. We argue that vigilance could constitute a prime indicator in behaviour-based species conservation, and we suggesting a safe distance of at least 400m should be considered in future tourist management.Animals monitor surrounding dangers independently or cooperatively (synchronized and coordinated vigilance), with independent and synchronized scanning being prevalent. Coordinated vigilance, including unique sentinel behaviour, is rare in nature, since it is time-consuming and limited in terms of benefits. No evidence showed animals adopt alternative vigilance strategies during antipredation scanning yet. Considering the non-independent nature of both synchronization and coordination, we assessed whether group members could keep alert synchronously or in a coordinated fashion under different circumstance. We studied how human behaviour and species-specific variables impacted individual and collective vigilance of globally threatened black-necked cranes (<i>Grus nigricollis</i>) and explored behaviour-based wildlife management. We tested both predation risk (number of juveniles in group) and human disturbance (level and distance) effects on individual and collective antipredation vigilance of black-necked crane families. Adults spent significantly more time (proportion and duration) on scanning than juveniles, and parents with juveniles behaved more vigilant. Both adults and juveniles increased time allocation and duration on vigilance with observer proximity. Deviation between observed and expected collective vigilance varied with disturbance and predation risk from zero, but not significantly so, indicating that an independent vigilance strategy was adopted by black-necked crane couples. The birds showed synchronized vigilance in low disturbance areas, with fewer juveniles and far from observers; otherwise, they scanned in coordinated fashion. The collective vigilance, from synchronized to coordinated pattern, varied as a function of observer distance that helped us determine a safe distance of 403.75m for the most vulnerable family groups with two juveniles. We argue that vigilance could constitute a prime indicator in behaviour-based species conservation, and we suggesting a safe distance of at least 400m should be considered in future tourist management.</p>
Burrow ambient temperature influences Helice crab activity and availability for migratory Red-crowned Cranes Grus japonensis
<p><span><span><span><span><span><span><span><span><span><span><span>For migratory birds that specialize on particular benthic macroinvertebrate species, the timing of migration is critical since prey availability may be temporally limited and a function of local ambient temperature. Hence, variation in local ambient temperature can influence the diet composition of migrant birds, and consequently they may be constrained by which stopover and wintering sites they are able to utilize during periods of colder temperatures. Here we use faecal analysis, observer-based population counts, digital video-recordings, and temperature data to test five predictions regarding the influence of local ambient temperature on the activity and availability of mudflat crabs - a key prey resource at three staging/wintering sites in eastern China, for migratory Red-crowned cranes (<i><span>Grus japonensis</span></i>) and how this subsequently influences crane diet and use of wetland sites. Pearson's correlations and generalised linear models revealed that mudflat crabs became significantly more surface active with increasing burrow ambient temperature. Piecewise regression analysis revealed that crab surface activity was largely limited to a burrow ambient temperature threshold between 12~13℃ after which activity significantly increased. Crab activity declining temporally during the crane's autumn migration period but increased during spring migration. Crabs accounted for a significant proportion of crane diet at two of three sites, however the frequency of crab remains was significantly different between sites, and between autumn and spring migration. Analyses of crane count data revealed a degree of congruence between the migration timing of Red-crowned cranes with periods of warmer ambient temperature, and a significant, positive correlation between the percentage of crab remains in crane faeces and site ambient temperature. Collectively our data suggests that temperature-related mudflat crab activity may provide an important time window for migratory Red-crowned cranes to utilise critical stop-over sites and the crabs' food resources.</span></span></span></span></span></span></span></span></span></span></span></p>
Data from: Disturbance and predation risk influence vigilance synchrony of Black-necked Cranes Grus nigricollis, but not as strongly as expected
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Population and conservation threats on the vulnerable Sarus Crane (Grus antigone) in Nepal
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Burrow ambient temperature influences Helice crab activity and availability for migratory Red-crowned Cranes Grus japonensis
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International Brain Laboratory public data
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OpenNeuro
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