Forests are critically important to global pollinator diversity and enhance pollination in adjacent crops

Biological reviews/Biological reviews of the Cambridge Philosophical Society, Journal Year: 2023, Volume and Issue: 98(4), P. 1118 - 1141

Published: March 6, 2023

ABSTRACT Although the importance of natural habitats to pollinator diversity is widely recognized, value forests pollinating insects has been largely overlooked in many parts world. In this review, we ( i ) establish global diversity, ii explore relationship between forest cover and mixed‐use landscapes, iii highlight contributions forest‐associated pollinators pollination adjacent crops. The literature shows unambiguously that native support a large number forest‐dependent species are thus critically important diversity. Many taxa require or benefit greatly from resources restricted forests, such as floral provided by plants (including wind‐pollinated trees), dead wood for nesting, tree resins, various non‐floral sugar sources (e.g. honeydew). landscape‐scale studies generally conclusion enhance findings often complicated spatial scale, focal taxa, landscape context, temporal type, disturbance history, external stressors. While some loss can be beneficial enhancing habitat complementarity, too much result near‐elimination species. There strong evidence multiple crop types substantially increase yields habitats, at least within foraging ranges involved. also suggests may have enhanced future given their role mitigating negative effects pesticides climate change. questions remain about amount configuration required promote services neighbouring habitats. However, it clear current body knowledge any effort preserve woody including protection individual trees, will help maintain critical they provide.

Language: Английский

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Securing Nature’s Contributions to People requires at least 20%–25% (semi-)natural habitat in human-modified landscapes

One Earth, Journal Year: 2024, Volume and Issue: 7(1), P. 59 - 71

Published: Jan. 1, 2024

The cascading effects of biodiversity decline on human well-being present a pressing challenge for sustainable development. Conservation efforts often prioritize safeguarding specific species, habitats, or intact ecosystems but overlook biodiversity's fundamental role in providing Nature's Contributions to People (NCP) human-modified landscapes. Here, we systematically review 154 peer-reviewed studies estimate the minimum levels (semi-)natural habitat quantity, quality, and spatial configuration needed landscapes secure functional integrity essential sustaining NCP provision. We find that provision multiple is threatened when landscape falls below an area 20%–25% each km2. Five almost completely disappear level 10% habitat. exact required depends local context NCP. Today, about two-thirds lands have insufficient habitat, requiring action regeneration. Our findings serve as generic guideline target conservation actions outside natural areas.

Language: Английский

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Crop diversification for pollinator conservation

Landscape Ecology, Journal Year: 2025, Volume and Issue: 40(1)

Published: Jan. 11, 2025

Abstract Context Intensive agriculture drives insect decline impacting insect-mediated ecosystem services that support production. Crop diversification shows promise in increasing crop productivity and enhancing services, however, the impact on biodiversity conservation, particularly of pollinators, is unclear. Objectives Here, we synthesize mechanisms current evidence base how spatial temporal diversity crops within across agricultural fields can benefit pollinator biodiversity. Methods We focus research highly intensified regions, Western Europe North America, from which know a lot about decline, but use inspiration tropical regions. Results find higher diversity, with sequentially flowering cultivars, intercropping practices, larger coverage crops, for example through integrating cultivation forgotten, novel, woody increases flower resource availability throughout active flight period pollinators. All practices increase landscape heterogeneity, further enhanced by decreasing field sizes. As result, functional connectivity increases, improves accessibility foraging ranges Conclusions Our review highlights potential various measures supporting pollinating insects without taking land out production, as well limitations, including only subset species may benefit. Empirical suggest could landscape-wide studies are needed to properly evaluate true conservation part solution bending curve decline.

Language: Английский

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Predicting landscape‐scale native bumble bee habitat use over space, time, and forage availability

Ecology, Journal Year: 2025, Volume and Issue: 106(2)

Published: Feb. 1, 2025

Abstract The distribution and abundance of foraging resources are key determinants animal habitat use persistence. Decades agricultural expansion intensification, along with the introduction exotic species, have dramatically altered resource distributions in space time. nature contemporary landscapes requires new approaches to understand how mobile organisms utilize resulting highly fragmented, heterogeneous resources. We used colonies native bumble bee ( Bombus vosnesenskii ) deployed among types a land gradient characterize availability change as function landscape composition throughout season diverse region Northern California. employ novel probabilistic framework identify spatiotemporal patterns different habitats. Bumble preference (i.e., pollen foraging) flowering plant abundance) driven by surrounding time year. bees strongly preferred from plants, which was overrepresented samples across relative its estimated availability. Our model also revealed strong reliance on seminatural (e.g., oak savannahs, chapparal, riparian corridors)—features that increasingly rare anthropogenically dominated landscapes. In fact, even most intensive largely limited interstitial field road edges) despite available mass‐flowering crops. results highlight importance mosaic heterogeneity) allowing link through season. we develop serves enhance predictions insect within fragmented

Language: Английский

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Synthesis of highbush blueberry pollination research reveals region‐specific differences in the contributions of honeybees and wild bees

Journal of Applied Ecology, Journal Year: 2023, Volume and Issue: 60(12), P. 2528 - 2539

Published: Oct. 11, 2023

Abstract Highbush blueberry production has expanded worldwide in recent decades. To safeguard future yields, it is essential to understand if insect pollination limiting current and which insects contribute different regions. We present a systematic review including set of meta‐analyses on insect‐mediated highbush blueberry. summarize the geographic distribution research, abundance pollinator taxa their relative contributions. Using raw data from 21 studies, totalling 496 site replicates, we determine degree service pollen limitation (i.e. combining open levels with experimental bagged and/or hand treatments), as well contribution honeybees wild bees observational, pollination). Most studies originate North America, focusing only few cultivars. Honeybees are dominant pollinator, occasionally abundant. Wild more efficient pollinators single‐visit basis compared honeybees, increases abundance. Insect‐mediated services increased fruit set, berry weight seed ( R 2 values: 64.8%, 75.9% 75.2% respectively). often detected limitation, indicated by an increase : 10.1%, 18.2% 21.5%, respectively), additional pollination. Increasing visitation contributed increasing 5.4% 3.5%), 6.5% 2.8%) 6.4% 3.8%) respectively. Bee contributions were variable across Synthesis application A diverse community insects, primarily bees, contributes yield. However, deficits common. The finding that both enhance highlights possibility adopting management strategies utilize or depending specific context region. This further emphasizes general importance conserving health diversity. Our synthesis gaps areas for research better crops expanding globally.

Language: Английский

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Pollination deficits and their relation with insect pollinator visitation are cultivar-dependent in an entomophilous crop

Agriculture Ecosystems & Environment, Journal Year: 2024, Volume and Issue: 369, P. 109036 - 109036

Published: April 24, 2024

Language: Английский

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The impact of pollination requirements, pollinators, landscape and management practices on pollination in sweet and sour cherry: A systematic review

Agriculture Ecosystems & Environment, Journal Year: 2024, Volume and Issue: 374, P. 109163 - 109163

Published: July 20, 2024

Insect-mediated pollination is crucial for global production of multiple pollinator-dependent crops, including high-value crops like sweet and sour cherry. In the face increasing agricultural demand continued pollinator decline, it essential to identify targeted management strategies safeguard services. Hence, we performed a systematic review on how cherry influenced by intrinsic environmental requirements, flower-visiting insect communities, surrounding landscape on-farm practices. We found that most research was conducted in compared cherry, originated from North America Europe, disregarding key areas. Cherry cultivars can be either self-compatible or self-incompatible, but consistently benefits fruit set. Temperature has strong effect success mediating pollen germination, tube growth ovule longevity. adequate set both whereas limitation detected sweet, not A great diversity insects visits blossoms, with 185 species recorded, which 142 were bees 36 flies. With mean relative abundance 57 % across studies, honeybees dominant flower visitor. Little known about performance different taxa, only one study comparing bees' single-visit efficiency, suggesting mason mining are more efficient pollinators bumblebees. This could explain why observational studies detect positive relationship between wild visitation set, honeybee visitation. Studies managed focused bees, while bumblebee neglected. sum, conclude shortages improved promotion pollinators, both, depending context requirements cultivars. Wild bee enhanced through conserving semi-natural habitats around orchards. Enhancing floral resources as an measurement mixed results other practices such polytunnels pesticide effects understudied. Development guidelines farmers enhance services orchards should take into account aspects, spanning horticulture agronomy (e.g., best manage strips) applied entomology ecology adding perspective optimize management).

Language: Английский

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Organic farming and annual flower strips reduce parasite prevalence in honeybees and boost colony growth in agricultural landscapes

Journal of Applied Ecology, Journal Year: 2024, Volume and Issue: 61(9), P. 2146 - 2156

Published: Aug. 20, 2024

Abstract Despite the major role that insect pollinators play in crop production, agricultural intensification drives them into decline. Various conservation measures have been developed to mitigate negative effects of agriculture on pollinators. In a novel comparison efficacy three honeybee colony growth, we monitored experimental colonies 16 landscapes comprised orthogonal gradients organic agriculture, annual flower strips and perennial semi‐natural habitats. Using structural equation modelling, assessed prevalence 11 parasites, Varroa destructor loads their collective impact growth. Increasing area coverage habitat related higher V. load indirectly lower was associated with farming parasite richness also directly improved Synthesis applications : Landscape features can affect through provision food resources modulation prevalence. To promote health agro‐ecosystems, our results suggest should be prioritized measures. management consider merits demerits different sustain healthy populations agro‐ecosystems.

Language: Английский

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Intraspecific crop diversity for enhanced crop pollination success. A review

Agronomy for Sustainable Development, Journal Year: 2024, Volume and Issue: 44(5)

Published: Oct. 1, 2024

Language: Английский

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Cascading effects of management and landscape on insect pollinators, pollination services and yield in apple orchards

Agriculture Ecosystems & Environment, Journal Year: 2023, Volume and Issue: 352, P. 108509 - 108509

Published: April 4, 2023

Language: Английский

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