The interplay of landscape composition and configuration: new pathways to manage functional biodiversity and agroecosystem services across Europe

Ecology Letters, Journal Year: 2019, Volume and Issue: 22(7), P. 1083 - 1094

Published: April 7, 2019

Abstract Managing agricultural landscapes to support biodiversity and ecosystem services is a key aim of sustainable agriculture. However, how the spatial arrangement crop fields other habitats in impacts arthropods their functions poorly known. Synthesising data from 49 studies (1515 landscapes) across Europe, we examined effects landscape composition (% habitats) configuration (edge density) on margins, pest control, pollination yields. Configuration interacted with proportions non‐crop habitats, species’ dietary, dispersal overwintering traits led contrasting responses variables. Overall, however, high edge density, 70% pollinator 44% natural enemy species reached highest abundances control improved 1.7‐ 1.4‐fold respectively. Arable‐dominated densities achieved This suggests that enhancing density European agroecosystems can promote functional yield‐enhancing services.

Language: Английский

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Meta-analysis reveals that pollinator functional diversity and abundance enhance crop pollination and yield

Nature Communications, Journal Year: 2019, Volume and Issue: 10(1)

Published: April 1, 2019

Abstract How insects promote crop pollination remains poorly understood in terms of the contribution functional trait differences between species. We used meta-analyses to test for correlations community abundance, species richness and metrics with oilseed rape yield, a globally important crop. While overall abundance is consistently predicting divergence traits also showed positive correlation. This result supports complementarity hypothesis that function maintained by non-overlapping distributions. In artificially constructed communities (mesocosms), positively correlated although this effect not seen under field conditions. As dominant do predict yield above attributed alone, we find no evidence support mass ratio hypothesis. Management practices increasing just pollinator but divergence, could benefit agriculture.

Language: Английский

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Non-Bee Insects as Visitors and Pollinators of Crops: Biology, Ecology, and Management

Annual Review of Entomology, Journal Year: 2019, Volume and Issue: 65(1), P. 391 - 407

Published: Oct. 14, 2019

Insects other than bees (i.e., non-bees) have been acknowledged as important crop pollinators, but our understanding of which plants they visit and how effective are pollinators is limited. To compare visitation efficiency crop-pollinating non-bees at a global scale, we review the literature published from 1950 to 2018 concerning visitors 105 food crops that known benefit animal pollinators. Of animal-pollinated crops, significant proportion visited by both bee non-bee taxa (n = 82; 77%), with total gross domestic product (GDP) value US$780.8 billion. For narrower range visitors, those favor 8) US$1.2 billion, compared 15), US$19.0 Limited pollinator data were available for one or more in only half 61; 58%). Among non-bees, some families recorded visiting wide (>12), including six flies (Syrphidae, Calliphoridae, Muscidae, Sarcophagidae, Tachinidae, Bombyliidae), two beetle (Coccinelidae Nitidulidae), ants (Formicidae), wasps (Vespidae), four moths butterflies (Hesperiidae, Lycaenidae, Nymphalidae, Pieridae). within dipteran Syrphidae Calliphoridae most common this may be an artifact limited available. The diversity species life histories these groups lesser-known indicates diet, larval requirements, reproductive needs will require alternative habitat management practices bees.

Language: Английский

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Trait‐based ecology of terrestrial arthropods

Biological reviews/Biological reviews of the Cambridge Philosophical Society, Journal Year: 2018, Volume and Issue: 94(3), P. 999 - 1022

Published: Dec. 13, 2018

In focusing on how organisms' generalizable functional properties (traits) interact mechanistically with environments across spatial scales and levels of biological organization, trait-based approaches provide a powerful framework for attaining synthesis, generality prediction. Trait-based research has considerably improved understanding the assembly, structure functioning plant communities. Further advances in ecology may be achieved by exploring trait-environment relationships non-sessile, heterotrophic organisms such as terrestrial arthropods, which are geographically ubiquitous, ecologically diverse, often important components ecosystems. studies trait databases have recently been compiled groups ants, bees, beetles, butterflies, spiders many others; however, explicit justification, conceptual framework, primary-evidence base burgeoning field 'terrestrial arthropod ecology' not well established. Consequently, there is some confusion over scope relevance this field, tendency to overlook assumptions approach. Here we aim broad accessible overview arthropods. We first define illustrate foundational concepts respect justify application study their ecology. Next, review community where used elucidate assembly processes communities influenced niche filtering along environmental gradients (e.g. climatic, structural, land-use gradients) abiotic biotic disturbances fire, floods, invasions). also ecosystem investigate biodiversity-ecosystem function relationships: diversity relates host functions services that they mediate, decomposition, pollination predation. then suggest future work can address fundamental limitations investigating functionality effects intraspecific variation, assessing potential sampling methods bias traits values observed, enhancing quality consolidation information databases. A roadmap guide observational presented. Lastly, highlight new areas arthropods positioned advance ecological application. These include examining roles competitive, non-competitive (multi-)trophic interactions shaping coexistence, macro-scaling explain predict patterns biodiversity space time. hope will spur applications insights from most diverse eukaryotic Earth.

Language: Английский

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Reptile responses to anthropogenic habitat modification: A global meta‐analysis

Global Ecology and Biogeography, Journal Year: 2020, Volume and Issue: 29(7), P. 1265 - 1279

Published: March 20, 2020

Abstract Aim The aim was to determine how reptile populations respond anthropogenic habitat modification and whether species traits environmental factors influence such responses. Location Global. Time period 1981–2018. Major taxa studied Squamata. Methods We compiled a database of 56 studies reporting affects abundance calculated standardized mean differences in (Hedges’ g ). used Bayesian meta‐analytical models test responses depended on body size, clutch reproductive mode, specialization, range disturbance type, vegetation temperature precipitation. Results Based 815 effect sizes from 376 species, we found an overall negative (mean Hedges’ = −0.43, 95% credible intervals −0.61 −0.26). Reptile was, average, one‐third lower modified compared with unmodified habitats. Small small were associated more modification, although the weak overlapped zero. detected no effects mode (egg‐laying or live‐bearing), Some families exhibited than others, there phylogenetic signal data. Mining had most impacts abundance, followed by agriculture, grazing, plantations patch size reduction, whereas logging neutral. Main conclusions Habitat is key cause population declines, variability both within between types. type appeared be related intensity modification. Ongoing development environmentally sustainable practices that ameliorate urgently needed prevent declines populations.

Language: Английский

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Past and potential future effects of habitat fragmentation on structure and stability of plant–pollinator and host–parasitoid networks

Nature Ecology & Evolution, Journal Year: 2018, Volume and Issue: 2(9), P. 1408 - 1417

Published: July 20, 2018

Language: Английский

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Climate change in the Eastern Amazon: crop-pollinator and occurrence-restricted bees are potentially more affected

Regional Environmental Change, Journal Year: 2020, Volume and Issue: 20(1)

Published: Feb. 5, 2020

Abstract There is pressing need to anticipate the impacts of climate change on species and their functional contributions ecosystem processes. Our objective evaluate potential bee response considering (1) traits—body size, nest site, sociality; (2) services (effect trait)—crop pollination; (3) bees’ size current occurrence area. We analyzed 216 occurring at Carajás National Forest (Eastern Amazon, Pará, Brazil), using two different algorithms geographically explicit data. modeled area bees projected range shift under future scenarios through distribution modeling. then tested relationship loss with traits projections show that 95% will face a decline in total area, only 15 4% find climatically suitable habitats Carajás. The results indicate an overall reduction areas for all analyzed. Bees presenting medium restricted geographic distributions, as well vital crop pollinators, experience significantly higher losses potentially remaining be wide-range habitat generalists, crop-pollinator probably pose negative impact pollination service. north Pará presented greatest climatic suitability can considered conservation purposes. These findings emphasize detrimental effects biodiversity agricultural production by provide data support planning.

Language: Английский

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Historical decrease in agricultural landscape diversity is associated with shifts in bumble bee species occurrence

Ecology Letters, Journal Year: 2021, Volume and Issue: 24(9), P. 1800 - 1813

Published: June 18, 2021

Abstract Agricultural intensification is a key suspect among putative drivers of recent insect declines, but an explicit link between historical change in agricultural land cover and occurrence lacking. Determining whether agriculture impacts beneficial insects (e.g. pollinators), crucial to enhancing sustainability. Here, we combine large spatiotemporal sets bumble bee records show that increasing cropland extent decreasing crop richness were associated with declines over 50% species the agriculturally intensive Midwest, USA. Critically, found high diversity was higher many pre‐1950 even dominated areas, current landscapes are devoid diversity. Our findings suggest conservation production may be compatible, on‐farm landscape‐level predicted have positive effects on bees.

Language: Английский

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Land Use Change Consistently Reduces α‐ But Not β‐ and γ‐Diversity of Bees

Global Change Biology, Journal Year: 2025, Volume and Issue: 31(1)

Published: Jan. 1, 2025

ABSTRACT Land use change threatens global biodiversity and compromises ecosystem functions, including pollination food production. Reduced taxonomic α‐diversity is often reported under land change, yet the impacts could be different at larger spatial scales (i.e., γ‐diversity), either due to reduced β‐diversity amplifying diversity loss or increased dampening loss. Additionally, studies focus on diversity, while other important components, phylogenetic can exhibit differential responses. Here, we evaluated how agricultural urban alters α‐, β‐, γ‐diversity of an pollinator taxon—bees. Using a multicontinental dataset 3117 bee assemblages from 157 studies, found that was by 16%–18% in both habitats relative natural habitats. Phylogenetic decreased 11%–12% Compared with habitats, 11% 6% respectively, but exhibited no systematic We detected 22% decline 17% not significantly These findings highlight threat expansions large‐scale decline. In addition, urbanization agriculture lead consistent declines α‐diversity, their β‐ vary, highlighting need study effects multiple scales.

Language: Английский

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Assessing changes in arthropod predator–prey interactions through DNA‐based gut content analysis—variable environment, stable diet

Molecular Ecology, Journal Year: 2018, Volume and Issue: 28(2), P. 266 - 280

Published: Sept. 19, 2018

Analysing the structure and dynamics of biotic interaction networks processes shaping them is currently one key fields in ecology. In this paper, we develop a novel approach to gut content analysis, thereby deriving new perspective on community interactions their responses environment. For this, use an elevational gradient High Arctic, asking how environment species traits interact predator-prey involving wolf spider Pardosa glacialis. To characterize potential prey available predator, used pitfall trapping vacuum sampling. actually consumed, applied molecular analysis. Using joint distribution models, found elevation vegetation mass explain most variance composition locally available. However, such environmental variables had only small effect spider's gut. These observations indicate that exerts selective feeding particular taxa irrespective constraints. By directly modelling probability predation based data, neither trait matching terms predator body size nor phylogenetic or constraints modified probability. Our results taxonomic identity may be more important for than traits. The impact change thus appears indirect mediated by its imprint prey.

Language: Английский

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