Plant–hummingbird interaction networks in an urban area: a generalist species as the protagonist in mutualistic and agonistic interactions DOI
Jeane Lima-Passos, Andréa Cardoso Araujo, Caio Graco Machado

et al.

Studies on Neotropical Fauna and Environment, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 11

Published: April 22, 2024

The maintenance of green areas within cities is essential for promoting urban biodiversity and species interactions. Here, we evaluated the interactions between hummingbirds their visited plants over course a year in an park Barreiras, western Bahia, Brazil. Each month, from October 2018 to September 2019, recorded hummingbird species, they visit, agonistic We 748 legitimate visits by six five plant species. Most (60%) flowered continuously, most were rainy season when network was also more specialized (H2' = 0.821). Chionomesa fimbriata only during all studied months. This performed 70% involved (n 68). availability resources affected number (p 0.016). Tree producing many flowers increased diversity concentrated Plant with continuous flowering represented persistent supply resources, favoring residence C. study site. Despite low richness attests importance maintaining spaces promote biodiversity.

Language: Английский

Interactions between the introduced European honey bee and native bees in urban areas varies by year, habitat type and native bee guild DOI
Kit Prendergast, Kingsley W. Dixon, Philip W. Bateman

et al.

Biological Journal of the Linnean Society, Journal Year: 2021, Volume and Issue: 133(3), P. 725 - 743

Published: Feb. 5, 2021

Abstract European honey bees have been introduced across the globe and may compete with native for floral resources. Compounding effects of urbanization species on are, however, unclear. Here, we investigated how bee abundance foraging patterns related to those diversity in residential gardens vegetation remnants 2 years urbanized areas Southwest Australian biodiversity hotspot assessed niche overlap influenced these relationships. Honey did not overtly suppress abundance; complex relationships emerged when analysing according body size, time day resource levels. Native richness was positively correlated overall honeybee first year, but negatively second varied size. that had higher were associated abundance, between gardens. Relationships taxa, reflecting adaptations different flora, plus specialization. Thus, competition varies by location, mediated dietary breadth other life-history traits individual species.

Language: Английский

Citations

43
Dominance of honey bees is negatively associated with wild bee diversity in commercial apple orchards regardless of management practices DOI
Timothy Weekers, Leon Marshall, Nicolas Leclercq

et al.

Agriculture Ecosystems & Environment, Journal Year: 2021, Volume and Issue: 323, P. 107697 - 107697

Published: Oct. 5, 2021

Language: Английский

Citations

41
Impacts of the introduced European honeybee on Australian bee‐flower network properties in urban bushland remnants and residential gardens DOI
Kit Prendergast, Jeff Ollerton

Austral Ecology, Journal Year: 2021, Volume and Issue: 47(1), P. 35 - 53

Published: May 19, 2021

Abstract The European honeybee Apis mellifera is a highly successful, abundant species and has been introduced into habitats across the globe. As supergeneralist species, potential to disrupt pollination networks, especially in Australia, whose flora fauna have co‐evolved for millions of years. role honeybees networks Australia little explored never characterised urban areas, which may favour this exotic due proliferation similarly plant hyper‐generalist can utilise, unlike many native bee taxa. Here, we use bipartite network approach compare roles, terms species‐level properties, with taxa bee‐flower (‘pollination’) an urbanised biodiversity hotspot. We also assessed whether abundance influences overall structure. Pollination were created from surveys seven residential gardens vegetation remnants conducted monthly during spring‐summer period over two There consistent differences properties between taxa, often differing all other bees. Honeybees had significant impacts on being associated higher nestedness, extinction slopes plants, functional complementarity niche overlap (year two), as well lower weighted connectance generalisation. These associations are indicative that competition occurring networks. In conclusion, occupies dominant, distinct position southwest Western Australian hotspot major, potentially disruptive, influence plant‐pollinator these areas.

Language: Английский

Citations

37
Urban native vegetation remnants support more diverse native bee communities than residential gardens in Australia's southwest biodiversity hotspot DOI Open Access
Kit Prendergast, Sean Tomlinson, Kingsley W. Dixon

et al.

Biological Conservation, Journal Year: 2021, Volume and Issue: 265, P. 109408 - 109408

Published: Dec. 21, 2021

Language: Английский

Citations

34
Urbanisation and agricultural intensification modulate plant–pollinator network structure and robustness DOI Creative Commons
Willem Proesmans, Émeline Felten,

Emilien Laurent

et al.

Functional Ecology, Journal Year: 2024, Volume and Issue: 38(3), P. 628 - 641

Published: Jan. 24, 2024

Abstract Land use change is a major pressure on pollinator abundance, diversity and plant–pollinator interactions. Far less known about how land‐use alters the structure of networks their robustness to coextinctions. We analysed sampled in 12 landscapes along an urbanisation agricultural intensity gradient, from early spring late summer 2021, used stochastic coextinction model correlate risk with network (species network‐level metrics) landscape context. Networks intensively managed (i.e., urban) had lower initiating cascade, while may be robust. Network modulated frequency severity coextinctions species loss, strength interactions increased robustness. Urban were more rich symmetrical due high ornamental plants, smaller, tightly connected nested networks. extinctions, which was decreased by greater linkage density, interaction asymmetry dependence networks, once extinction occurred, nestedness density propagated degree cascade loss. At level, inversely correlated risk, implying that generalist number specialists lowest risk. An interplay between affects community implications for pollination services plant reproduction. Land‐use or other global pressures reorganising can alter communities potential functioning. Read free Plain Language Summary this article Journal blog.

Language: Английский

Citations

6
Pollination strategies are exceptionally complex in southwestern Australia – a globally significant ancient biodiversity hotspot DOI Creative Commons
Mark Brundrett, Philip G. Ladd, Gregory John Keighery

et al.

Australian Journal of Botany, Journal Year: 2024, Volume and Issue: 72(2)

Published: Jan. 1, 2024

Context The Southwest Australian Floristic Region has exceptional plant evolutionary complexity for fire, nutrition and pollination traits.Aims Our aim was to allocate strategies all vascular plants in this biodiversity hotspot by analysing existing new data.Methods Here we assigned a flower syndrome ~8800 region, using floral traits visitation records insects, birds or mammals, which were well correlated.Key results Specific insect relationships most common (3383), especially with native bees (2410), including buzz (450). Others pollinated wind (1054 plants), water (35) had relatively unspecialised flowers visited diverse insects (3026). associations flies (588) butterflies moths (165) less common. Approximately 14% primarily (601) (583) – much larger (corresponding bird bill lengths), insect-attracting colours (e.g. red green). Non-flying honey possums, visit certain along birds. Pollination peaked the Myrtaceae (11% bird, 25% insect), Fabaceae (2% 46% bee, 2% pollination) Proteaceae (40% birds, 31% specific insects). Bird also multiple origins Ericaceae (8%), Haemodoraceae (20%), Rutaceae (16%), Pittosporaceae (14%) Eremophila (45%). Extreme specialisations included secondary pollen presentation (1231), post-pollination colour change (72), mobile columns (310), explosive release (137) visual (209) sexual (171) deception orchids. trait >275 transitions, from (130), more (100), (15). These followed similar morphological pathways within families but differed between them.Conclusions This appears be globally unique, peaks highly speciose diversity centred region.Implications ecological genetic consequences, rare flora management, ecosystem restoration assessing vulnerability habitat degradation, fire climate change.

Language: Английский

Citations

6
Bee–plant interaction and community response along an urbanization gradient DOI Creative Commons
Anthony C. Ayers, Sandra M. Rehan

Journal of Urban Ecology, Journal Year: 2023, Volume and Issue: 9(1)

Published: Jan. 1, 2023

Abstract Elucidating bee response to urbanization is essential promoting pollinator diversity in cities especially considering such landscapes are projected expand support future global populations. To determine how community composition and plant–pollinator interactions respond urbanization, 29 sites representing three urban categories (high, medium low urbanization) were monitored biweekly from May through early October Toronto, Canada. Bees collected passively using pan blue vane traps as well actively aerial nets vacuums compare structure networks among categories. Functional traits dietary breadth, behaviour, nesting substrate native or non-native status also examined landscape influences assemblages. In total, 5477 bees, comprising 26 genera 164 species, represented this study. The was largely supportive of species within the family Apidae Halictidae ground nesting, generalist species. Overall, affected by characteristics percent tree cover impervious (i.e. paved built) surface surrounding sites; however, richness abundance significantly influenced plant not variables. A total 3267 observed throughout study region with remaining consistent along gradient a few floral host plants Solidago dominating certain contexts. These results provide important land use information for targeting conservation habitat restoration.

Language: Английский

Citations

12
Influence of urban land cover and habitat quality on wild bees DOI
Muzafar Hussain Sirohi, Janet Jackson, Jeff Ollerton

et al.

Urban Ecosystems, Journal Year: 2025, Volume and Issue: 28(2)

Published: Feb. 18, 2025

Language: Английский

Citations

0
A macroscopic synthesis and future directions on the study of ecological interaction networks in urban areas DOI

Issaac Azrrael Teodosio Faustino,

Fernando González-García, Michelle Ramos‐Robles

et al.

Urban Ecosystems, Journal Year: 2025, Volume and Issue: 28(3)

Published: April 3, 2025

Language: Английский

Citations

0
Bees in a Heat Island: Bee Assemblages on Cercis canadensis and Cornus florida in Urban and Exurban Sites DOI Creative Commons
Gerardo R. Camilo, Nina S. Fogel,

Jenny C. Mullikin

et al.

Journal of Pollination Ecology, Journal Year: 2025, Volume and Issue: unknown

Published: May 16, 2025

The predicted effects of climate change on pollination processes are multiple, including earlier blooming times and decoupling from pollinators. Yet, little research has been conducted, especially in urban areas where the heat island effect is known to speed up warming. Our aim investigate which bee species visit two native, vernal-blooming tree with continuous distributions exurban sites. In 2019 2020, we collected bees mass-flowering Cercis canadensis Cornus florida St. Louis metropolitan Missouri, USA. A total 434 carrying pollen were identifying 54 representing five families. An additional 123 specimens did not carry any at all captured 37 within We observed a greater diversity among sites while numbers male proportionately higher versus Although flowering periods overlapped, both was identified only 34 bees.

Language: Английский

Citations

0