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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Landscape structure shapes the diversity of plant reproductive traits in agricultural landscapes in the Brazilian Cerrado

Agriculture Ecosystems & Environment, Journal Year: 2022, Volume and Issue: 341, P. 108216 - 108216

Published: Oct. 18, 2022

Language: Английский

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Early spring orchard pollinators spill over from resource‐rich adjacent forest patches

Journal of Applied Ecology, Journal Year: 2022, Volume and Issue: 60(3), P. 553 - 564

Published: Dec. 27, 2022

Abstract Pollinator communities are more abundant and diverse in agricultural matrices with natural habitat, although the reasons for these correlations remain unclear. It is possible that forest fragments edges provide resources pollinators important early weeks of spring, after which time those insects can then ‘spill over’ into crops such as apple orchards during bloom. To explore how may feed therefore promote flower visitor adjacent habitats, we sampled springtime nine their edge canopies understories. We identified pollen consumed by pan‐trapped bees flies to assess if ate where they were caught, diets similarly from orchard. further explored sex differences habitat usage. Our spatially replicated sampling found bee fly abundance peaks first understorey, canopy finally Analysis digestive tracts showed significant usage throughout especially before Pollinators had often eaten a different than one suggesting frequent movement between habitats. Digestive tract an underused but powerful avenue ecological insight. In Andrena , orchard most wild taxa this study, male primarily woods not conspecific females later active. Synthesis applications : Forested areas, trees, large amounts spring facilitate build‐up spillover pollinator populations Forests also critical bees, rarely orchards. Despite importance reproduction, needs usually considered conservation planning. Overall, our data indicate ensuring there adequate improve long‐term sustainability essential crop pollination services.

Language: Английский

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Multi-scale effects of landscape on nitrogen (N) and phosphorus (P) in a subtropical agricultural watershed: A case of Qi river basin (QRB), China

Ecological Indicators, Journal Year: 2023, Volume and Issue: 147, P. 110017 - 110017

Published: Feb. 16, 2023

Studying the temporal and spatial relationship between water body nutrients landscape elements in agricultural watershed will be helpful revealing process of non-point source pollution (NPSP). In order to quantitatively analyze effects on nitrogen phosphorus at multiple scales, Qi River basin located tail Three Gorges Reservoir was selected as study area, various methods such t-test, one-way analysis variance, pearson correlation redundancy were used. The results showed that (N) (P) parameters dry season higher than those rainy season, differences N P significant (with 95 % level). This may due difference surface runoff, which led concentrations season. Built land percetage (BLP), largest patch index paddy percentage had coefficients variation (greater 40 %). 100 m buffer zone lowest with catchment, 300–1000 strongest correlation. coefficient greater interpretation rate all indicators exceeded 51.87 (significant confidence level), while same scale increased by 7.12 %-14.28 Topography use/cover obvious bodies. typically positively correlated percentage, built density Shannon diversity index, but they a negative index. optimal management within range m–500 m, 500 catchment. amount entering river could reduced varying degrees setting up hedges increasing route into river. this for prevention control NPSP subtropical basin.

Language: Английский

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Evidence of time-lag in the provision of ecosystem services by tropical regenerating forests to coffee yields

Environmental Research Letters, Journal Year: 2023, Volume and Issue: 18(2), P. 025002 - 025002

Published: Jan. 9, 2023

Restoration of native tropical forests is crucial for protecting biodiversity and ecosystem functions, such as carbon stock capacity. However, little known about the contribution early stages forest regeneration to crop productivity through enhancement services, pollination pest control. Using data from 610 municipalities along Brazilian Atlantic Forest (30 m spatial resolution), we evaluated if young regenerating (YRFs) (less than 20 years old) are positively associated with coffee yield whether a relationship depends on amount preserved in surroundings fields. We found that alone was not variations yields. presence YRF (within 500 buffer) related higher yields when 2 km buffer above 20% threshold cover. These results further reinforce regional influenced by changes biodiversity-mediated which explained mature surrounding argue while fragments may contribute increased connectivity between remnants fields landscapes minimum (20%), older (more years) essential sustaining pollinator enemy's populations. highlight potential time lag at least forests' contributing provision services affect (e.g. control). emphasize need implement public policies promote restoration ensure permanence these new over time.

Language: Английский

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Fire ant nests: Abundance and size in crops under different agricultural management systems and landscape compositions

Agricultural and Forest Entomology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 24, 2025

Abstract The genus Solenopsis is widely distributed in the Neotropical region, mainly South America. In Brazil, species S. invicta and saevissima , known as fire ants, cause significant impacts, especially agricultural areas open environments with little vegetation. Soil cover environmental variables can influence dimensions occurrence of nests these species. Thus, this study assessed effect management (conventional or organic) dominant landscape (agricultural native vegetation) on rural properties “Cinturão Verde Paulista” southeastern Brazil. Our results indicate a higher abundance conventional management, while are more abundant organic management. morphological revealed that tallest predominantly found landscapes, whereas practices type appear to have no nesting dimensions. These findings contribute our understanding ecological dynamics . They also provide insights into potential strategies for population control highlight importance considering both systems factors when studying invasive species, such

Language: Английский

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Host identity, nest quality, and parasitism strategy: influences on body size variation in parasitoid bees and wasps

Oikos, Journal Year: 2025, Volume and Issue: unknown

Published: April 21, 2025

Body size determines mobility and fitness across taxa in various ways. Yet, drivers of body higher trophic invertebrates, especially parasitoids, including intra‐ interspecific variations, are poorly understood due to complex interactions between parasitoid behaviour, the environment their hosts. We measured 393 individuals four species (collected from 2220 parasitized brood cells) sampled with trap nests for cavity‐nesting bees wasps Southern Black Forest, Germany. related 15 host diameters along five environmental gradients (proportion conifers, canopy cover, structural complexity, herb cover deadwood diameter). Host identity, nest diameter, a lesser extent, differences within were primary size, albeit responses varied among species. For instance, when black wood borer wasp Trypoxylon figulus doubled ichneumon Nematopodius debilis (parasitising directly) increased by 37% while blue cuckoo Trichrysis cyanea food resources) only 8%. Across host–parasitoid combinations, correlated weakly did not significantly influence or size. Our findings highlight factors influencing identity diameter emerging as influential species, although uniformly. In contrast, relationship top level (parasitoids), lower (hosts), less influential. Considering variables that directly affect such microhabitat conditions biotic interactions, may further clarify dynamics shaping variation at levels should be considered future studies addressing how land management influences multitrophic interactions.

Language: Английский

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Green land in a landscape bolsters the dietary diversity of reared yellow-legged hornet Vespa velutina Lepeletier (Hymenoptera: Vespidae)

Bulletin of Entomological Research, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 11

Published: April 21, 2025

Abstract Land use change has significantly altered most ecosystem functioning, such as nutrition provisioning, water flows and pollination services. So far, the impact of land on dietary diversity predatory insects remained largely unexplored. In this study, we explored prey composition reared yellow-legged hornets Vespa velutina Lepeletier (Hymenoptera: Vespidae) in landscapes with a gradient surrounding green lands, using metabarcoding feces eliminated by larvae. The primarily fed upon insects, dipterans, coleopterans, lepidopterans, hemipterans, hymenopterans, orthopterans being dominant groups. percentage lands had positive effect richness at spatial scale 1500 m, but no Shannnon index community. Meanwhile, effects coleopteran lepidopteran prey, significant dipteran hemipteran hymenopteran or orthopteran prey. terms beta diversity, explained dissimilarity communities among landscapes, whereas local factors, distance to buildings, did not explain dissimilarity. Our study indicated that landscape positively affected hornets, varied different taxonomic groups

Language: Английский

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Where the wild bees are: Birds improve indicators of bee richness

PLoS ONE, Journal Year: 2025, Volume and Issue: 20(4), P. e0321496 - e0321496

Published: April 23, 2025

Widespread declines in wild bee populations necessitate urgent action, but insufficient data exist to guide conservation efforts. Addressing this deficit, we investigated the relative performance of environmental and/or taxon-based indicators predict richness eastern and central U.S. Our methodology leveraged publicly available on bees (SCAN GBIF repositories), birds (eBird participatory science project) land cover (USDA Cropland Data Layer). We used a Bayesian variable selection algorithm select variables that best predicted species using two datasets: semi-structured dataset covering wide geographical temporal range structured focused extent with standardized protocol. demonstrate add value as across broad geographies, particularly when data. These improvements likely stem from demonstrated sensitivity conditions thought impact are missed by remotely sensed Importantly, enables estimation places don’t have direct observations bees. In case specifically, suggest bird data, combined, serve useful monitoring priorities until quality quantity improve.

Language: Английский

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Natural habitat cover and fragmentation per se influence orchid-bee species richness in agricultural landscapes in the Brazilian Cerrado

Apidologie, Journal Year: 2022, Volume and Issue: 53(2)

Published: April 14, 2022

Language: Английский

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