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17 results for “urban foraging”
Figure 4 in Optimal FOraging OF NeOtrOpical Otters (CarnivOra: Mustelidae) in an urban river and predOminance OF generalist and sedentary fish in their diet
Figure 4. Results of the Ivlev's selectivity index for the dataset from: (A) May 2006 to September 2007; (B) September 2006 to January 2007 (wet season); (C) February to August 2007 (dry season).
Dancing bees evaluate central urban forage resources as superior to agricultural land
<p class="ColorfulList-Accent11CxSpFirst">Recent evidence suggests that flower-rich areas within cities could play an important role in pollinator conservation, but direct comparison of floral resources within agricultural and urban areas has proved challenging to perform over large scales.</p> <p class="ColorfulList-Accent11CxSpMiddle">Here we use the waggle dances of honeybees (<i>Apis mellifera</i> L.) to perform large-scale landscape surveys at heavily urban or agricultural sites for a key pollinator of wild and crop plants. We analyzed 2827 dances that were performed by 20 colonies in SE England.</p> <p class="ColorfulList-Accent11CxSpMiddle">We show that hive median foraging trip distance is consistently lower at urban sites across the entire season. The sucrose content of collected nectar did not significantly differ between urban and agricultural land, ruling out the possibility that longer foraging distances in agricultural sites were driven by distant but nectar-rich resources.</p> <p class="ColorfulList-Accent11CxSpMiddle">Within cities, bees preferentially targeted residential areas on foraging trips, while trips to mass-flowering crops overwhelmingly dominated at agricultural sites. For both land-use types, distances flown increased in the summer, but there was high variation in temporal patterns between individual sites</p> <p class="ColorfulList-Accent11CxSpLast"><i>Policy implications: </i>From the self-reported perspective of a generalist pollinator, forage was easier to find in heavily urbanized areas than in the modern agricultural landscapes that we studied. A focus on continuous spatial and temporal provision within agricultural environments is key to redressing this imbalance.</p>
Complex urban environments provide Apis mellifera with a richer plant forage than suburban and more rural landscapes
<p>Growth in the global development of cities, and increasing public interest in beekeeping, has led to rises in the numbers of urban apiaries. Towns and cities can provide an excellent diet for managed bees, with a diverse range of nectar and pollen available throughout a long flowering season and are often more ecologically diverse than the surrounding rural environments. Accessible urban honeybee hives are a valuable research resource to gain insights into the diet and ecology of wild pollinators in urban settings. We used DNA metabarcoding of the rbcL and ITS2 gene regions to characterise the pollen community in Apis mellifera honey, inferring the floral diet, from 14 hives across an urban gradient around Greater Manchester, UK. We found that the proportion of urban land around a hive is significantly associated with an increase in the diversity of plants foraged, and that invasive and non-native plants appear to play a critical role in the sustenance of urban bees, alongside native plant species. The proportion of improved grassland, typical of suburban lawns and livestock farms, is significantly associated with decreases in the diversity of plant pollen found in honey samples. These findings are relevant to urban landscape developers motivated to encourage biodiversity and bee persistence, in line with global bio-food security agendas.</p>
Urban bumblebees diversify their foraging strategy to maintain nutrient intake
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Complex urban environments provide Apis mellifera with a richer plant forage than suburban and more rural landscapes
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Data from: Urbanization and the temporal patterns of social networks and group foraging behaviours
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Dancing bees evaluate central urban forage resources as superior to agricultural land
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Data from: Trace metals in nectar of important urban pollinator forage plants: A direct exposure risk to pollinators and nectar-feeding animals in cities
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The effect of urbanization and temperature on thermal tolerance, foraging performance, and competition in cavity dwelling ants
<p>Human disturbance including rapid urbanization and increased temperatures can have profound effects on the ecology of local populations. Eusocial insects, such as ants, have adapted to stressors of increasing temperature and urbanization, however these evolutionary responses are not consistent among populations across geographic space. Here we asked how urbanization and incubation temperature influence critical thermal maximum (CT<sub>max</sub>) and various ecologically relevant behaviors in three ant species in urban and rural locations in Worcester, MA, USA. We did this by incubating colonies of three species of cavity dwelling ant (<em>Aphaenogaster picea, Tapinoma sessile, </em>and <em>Temnothorax longispinosus</em>) from 2 habitat types (Rural and Urban), for 60-days at multiple temperatures. We found that incubation temperature, urbanization and species of ant all significantly affected overall colony critical thermal maximum. We also found that recruitment time, colonization time and defense response were significantly affected by incubation temperature and varied between species of ant, while recruitment and colonization time were additionally affected by urbanization. These variable changes in performance and competitive traits across species suggest that responses to urbanization and shifting temperatures are not universal across species. Changes in behavioral responses caused by urbanization may disrupt biodiversity, creating unusual competitive environments as a consequence of natural adaptations and cause both direct and indirect mechanisms for which human disturbance can lead to local species extinction.</p> <p> </p>
Fruits of the city: The nature, nurture and future of urban foraging
<p><span>Urban foraging is a global informal phenomenon that has been investigated in the Global North more than other parts of the world. Characterising the nature of urban foraging in the Global South is imperative given the rapid urbanisation and sustainable development priorities in the region. </span><span>In this study, we interviewed 80 urban foragers in four cities in the eastern coastal region of South Africa, with an aim to understand the nature of urban foraging in a developing nation context. We asked foragers about their initiation to and motivations for foraging, their logistics, yields, and associated activities, descriptions of their foraging grounds, and if and how they had changed, and what they envisage as an ideal future for foraging. </span><span>Many foragers started foraging in their childhood, in the company of friends and family, and, as in the Global North, regarded it as a cultural and recreational activity. Foraging was mostly done within a five-kilometre radius of home, on a weekly or fortnightly basis, and very few foragers processed or sold their foraged products. </span><span>Unlike the Global North, formal green spaces were not foraged in and were perceived to be poorly provisioned in urban planning. Forests and roadsides were equally used by the foragers, and very few had been discouraged from foraging. Most foragers were enthusiastic about the possibility of more people foraging, having designated spaces for foraging, and foraging-based businesses such as processed products and ecotourism. </span><span>We recommend that policymakers and land managers recognise and encourage foraging as a potentially sustainable use for stewardship of urban green spaces. To this end, we list the main wild edible fruit species used by foragers in the area, which could be planted in public spaces. We also suggest harnessing foragers</span><span>' </span><span>knowledge of useful species and spaces to develop green spaces and foraging-based supply chains. </span></p>
Influence of the land use of the foraging area on the physico-chemical properties of the honey of the honey bee, Apis mellifera , in the urban and peri-urban landscape of Butembo, Democratic Republic of Congo
<p>Dataset of the study site land cover and honey physico-chemical quality</p>
Fruits of the city: The nature, nurture and future of urban foraging
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Mistletoe-bearing trees positively influence bird foraging patterns across urban and natural environments
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The effect of urbanization and temperature on thermal tolerance, foraging performance, and competition in cavity dwelling ants
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Figure 3 in Optimal FOraging OF NeOtrOpical Otters (CarnivOra: Mustelidae) in an urban river and predOminance OF generalist and sedentary fish in their diet
Figure 3. Randomized species accumulation curve (Coleman) for fecal samples of Lontra longicaudis collected during the wet and dry seasons in the Santa Lúcia Biological Station (SLBS) between May 2006 and September 2007.
Figure 2 in Optimal FOraging OF NeOtrOpical Otters (CarnivOra: Mustelidae) in an urban river and predOminance OF generalist and sedentary fish in their diet
Figure 2. Stretches of the Timbuí River in the Santa Lúcia Biological Station (SLBS) with environments conducive to the presence of otters: (A) rocky environments; (B) sandbanks covered by vegetation. Images captured on May 27, 2007.
Figure 1 in Optimal FOraging OF NeOtrOpical Otters (CarnivOra: Mustelidae) in an urban river and predOminance OF generalist and sedentary fish in their diet
Figure 1. Santa Lúcia Biological Station (SLBS) in the green area. The highlight (blue line) represents the Timbuí river which crosses the municipal seat of Santa Teresa, Espírito Santo, Brazil.
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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)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
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.