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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The Value of Forests to Pollinating Insects Varies with Forest Structure, Composition, and Age

Current Forestry Reports, Journal Year: 2024, Volume and Issue: 10(5), P. 322 - 336

Published: July 9, 2024

Language: Английский

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Missing jewels: the decline of a wood-nesting forest bee, Augochlora pura (Diptera: Halictidae), in northern Georgia

Florida Entomologist, Journal Year: 2025, Volume and Issue: 108(1)

Published: Jan. 1, 2025

Abstract It is clear from research on pollinator declines that some taxa are more vulnerable than others. The sooner these sensitive species detected, and the cause(s) contributing to their decline identified, better chance of developing effective conservation plans. Using data nine studies conducted in northern Georgia, U.S., we present evidence Augochlora pura (Say) (Hymenoptera: Halictidae), once one most abundant all forest bee our study area, becoming less common as a proportion bees collected has experienced 70 % abundance over past 18 years (2007–2024) at long-term monitoring sites. We hypothesize Brachyponera chinensis (Emery) Formicidae), Asian needle ant, A. possibly other within its invaded range.

Language: Английский

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Long‐term drought triggers severe declines in carabid beetles in a temperate forest

Ecography, Journal Year: 2024, Volume and Issue: 2024(4)

Published: Jan. 22, 2024

Evidence for widespread declines in arthropods is growing and climate change one of the suspected drivers. Recent droughts Europe were unprecedented previous centuries we are only beginning to understand impacts on ecosystems. We analysed a 24‐year dataset carabid beetles from temperate forest area northeast Germany investigated linear non‐linear trends abundance, biomass, diversity species traits. especially interested if how these linked at different temporal scales using standardized precipitation evapotranspiration index (SPEI). found significant abundance biomass with annual rates −3.1% (0.95 CI [−5.3, −1]) –4.9% [−9.4, −1.6]), respectively. Non‐linear closely related SPEI when considering climatic water balance six years showed severe between 2015 2022 (−71% 0.95 [−84, −61] / −89% [−97, −59]). However, there remained background‐decline −2.1% [−5.7, −0.2]) [−6.5, −0.1]), respectively, which occurred independently drought. observed negative metrics shift assemblage that less directly droughts. Declining drought‐sensitive tended be larger predators low dispersal abilities. This study among very first investigate current drought insects central Europe. Our findings add concerning amount evidence while pointing towards weather anomalies as important driver.

Language: Английский

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Canopy structure influences arthropod communities within and beyond tree identity effects: Insights from combining LiDAR data, insecticidal fogging and machine learning regression modelling

Ecological Indicators, Journal Year: 2024, Volume and Issue: 160, P. 111901 - 111901

Published: March 1, 2024

Forest canopies host an abundant but often neglected diversity of arthropods, which requires careful attention in times ongoing biodiversity loss. Yet, how tree species composition interacts with canopy structure shaping arthropod communities remains largely unknown. Here, by combining mobile laser scanning and insecticidal fogging a machine learning algorithm, we studied architectural properties affect monospecific mixed stands broadleaved European beech the coniferous Norway spruce non-native Douglas fir Germany. Evaluating abundances ecological guild ∼ 90,000 arthropods 27 partly novel high-resolution structural variables, identified vegetation volume identity as weak predictors abundance diversity. In contrast, heterogeneity, i.e. complexity, vertical layering variability gaps—which were highest stands—were strong positive drivers. Despite this, was lower fir. Mixed had intermediate Our study shows that habitat heterogeneity species-identity are closely interlinked associated communities. Positive effects on uncoupled from resource availability, key role our intra-canopy gap indices suggests they should be considered indicators future research forest heterogeneity-diversity relationships. Broadleaf-conifer mixtures may suitable to mediate negative tree-species when adapting forests global change.

Language: Английский

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Forest bees benefit from compositionally diverse broadleaf canopies

Forest Ecology and Management, Journal Year: 2024, Volume and Issue: 566, P. 122051 - 122051

Published: June 12, 2024

Language: Английский

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Bee monitoring by community scientists: comparing a collections-based program with iNaturalist

Annals of the Entomological Society of America, Journal Year: 2024, Volume and Issue: 117(4), P. 220 - 233

Published: July 1, 2024

Abstract Bee monitoring, or widespread efforts to document bee community biodiversity, can involve data collection using lethal (specimen collections) non-lethal methods (observations, photographs). Additionally, be collected by professional scientists volunteer participants from the general public. Collection-based presumably produce more reliable with fewer biases against certain taxa, while photography-based approaches, such as public natural history platforms like iNaturalist, people and cover a broader geographic area. Few have been made quantify pros cons of these different approaches. We established science monitoring program assess biodiversity across state Pennsylvania (USA) specimen collections nets, blue vane traps, bowl traps. recruited 26 participants, mostly Master Gardeners, sample bees after receiving extensive training on topics methods. The specimens they were identified species, stored in museum collections, added databases. Then, we compared results our research-grade observations iNaturalist during same time period (2021 2022). At county levels, found documented over twice much novel baseline (state records) than iNaturalist. showed strong toward large-bodied non-native species. This study demonstrates value highly trained for collections-based research that aims patterns space time.

Language: Английский

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New distribution records of wild bees (Hymenoptera, Apoidea) in South Tyrol (Italy): expanding the wild bee database

Biodiversity Data Journal, Journal Year: 2025, Volume and Issue: 13

Published: Feb. 25, 2025

Throughout South Tyrol, in northern Italy, there is a data deficiency relating to wild bee species pool. Here, we present significant findings from the collection of 3,313 bees gathered over two separate studies conducted consecutive years. Our research focused on impact landscape heterogeneity, temperature and land-use change communities their pollination services an agricultural mountainous landscape. This article provides detailed account 150 identified collected using coloured pan traps. We report habitat type, occurrence data, threat status, sociality, nesting strategy diet breadth. In Italian regions where information distribution lacking or outdated, sharing crucial for developing conservation policies. The compiled list strengthens regional national database by providing new extinction-threatened species, such as Dufoureadentiventris (Nylander, 1848), Dufoureainermis Lasioglossumbrevicorne (Schenck, 1870), Lasioglossumlaevigatum (Kirby, 1802), Lasioglossummonstrificum (Morawitz, 1891), Nomadamutica Morawitz, 1872 Nomadavillosa Thomson, 1870. Additionally, recent that are valuable understanding range expansions, recording previously unreported Tyrol updating historical region.

Language: Английский

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Increasing Welfare of Honey Bees: Sweet Spot for Violence Prevention

Veterinary medicine and science, Journal Year: 2025, Volume and Issue: unknown

Published: April 2, 2025

This chapter describes the current plight of honey bees, focusing on Apis mellifera, who are exploited for food and medicine, pollination, as sentinels, to decrease violence; they also serve cultural inspiration an important interface between humans non-humans. In spite their importance willingness work with human beings, harvesting, beekeeping, bee farming often violent destructive operations. Many, if not most, bees die by hands wielding fire, pesticides, diseases, poor care. addition, many mellifera spp. moved into ecosystems which native, through essential act collecting pollen nectar, disrupt those ecosystems. Collecting products is done honey-hunting, natural industrialized farming. Bee highly associated disease, displacing local pollinators. To less violently more peacefully spp., need de-emphasize emphasize beekeeping native bees. health achieved rejuvenating foraging plants allows periodic swarming. Beekeepers should be supported simple tools training employ harvesting practices that aggressive defense responses will result in violent, peaceful interactions well help stabilize

Language: Английский

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Guidelines for Conserving Pollinating Insects in Southeastern US Forests

Journal of Forestry, Journal Year: 2025, Volume and Issue: unknown

Published: April 9, 2025

Language: Английский

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