Detecting landscape scale consequences of insecticide use on invertebrate communities

Mancini, Francesca; Woodcock, Ben A.; Redhead, John W.; Spurgeon, David J.; Jarvis, Susan G.; Pywell, R. F.; Shore, Richard F.; Johnson, Andrew C.; Isaac, Nick J. B.

doi:10.1016/bs.aecr.2020.07.001

Cited by 7 publications

(6 citation statements)

References 125 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

Section: Discussionmentioning

confidence: 97%

“…Recent studies have found a range of pesticides in nature areas in the same Veluwe region(Buijs & Mantingh, 2020;van Eekeren et al, 2022). The negative impact of pesticides on the survival of insects in nature reserves is indicated byEwald et al (2015),Mancini et al (2020) andBarmentlo et al (2021).Recent publications on the impact of climate change on ecosystems(Morris & Ball, 2021;Román-Palacios & Wiens, 2020;Wiens, 2016) indicate another possible cause for the decline of very common (non-critical) species at Boeschoten over the past two decades. While weather variables like precipitation and direct sunlight in the preceding month of April or the 30 days preceding a day of monitoring did have significant effects on the total number of active hoverflies, none of these variables could explain the negative trend at Boeschoten over the years (Appendix B of Data S1).…”

mentioning

confidence: 99%

See 1 more Smart Citation

Forest hoverfly community collapse: Abundance and species richness drop over four decades

Barendregt

Zeegers²,

Steenis³

et al. 2022

Insect Conserv Diversity

View full text Add to dashboard Cite

1. To study insect decline, an important threat to biodiversity, long-term datasets are needed. Here we present a study of hoverfly (Diptera: Syrphidae) abundance and diversity in a Dutch forest, surrounded by other forests, and analyse the variation in insect numbers over four decades.2. Between 1982 and 2021, abundance decreased by 80%. Until 1990, abundance showed a strong decrease of 10.9% per year, mainly in nationally rare species with carnivorous larvae exposed to air. From 1990, abundance stabilised, whereas from 2000, a second period of strong decline of 9.0% per year occurred, mainly in very common species.3. Species richness also declined strongly between 1979 and 2021: the total number of species observed in five monitoring days dropped by 44% over those 43 years.The characteristic set of dry-forest hoverfly species disappeared over four decades.4. The number of nationally rare species observed at the study site declined from 19 to 9 early on, in a period (1979)(1980)(1981)(1982)(1983)(1984) that coincided with intense nitrogen input and acidification caused by agriculture in the same region. The more recent decline is likely also caused by factors from outside the forest, as forest management and conditions remained constant. 5. Continued influx of nutrients and pesticides at a regional level, as well as climate change are possible causes of the decline. Research is needed to quantify their relative effects.

show abstract

Section: Discussionmentioning

confidence: 97%

mentioning

confidence: 99%

Forest hoverfly community collapse: Abundance and species richness drop over four decades

Barendregt

Zeegers²,

Steenis³

et al. 2022

Insect Conserv Diversity

View full text Add to dashboard Cite

show abstract

“…In contrast, in more heterogeneous landscapes where a variety of annual and perennial crops are grown and natural or semi-natural habitat patches are available, landscape complementation (in the sense of Dunning et al 1992) for mobile natural enemies may occur. Landscapes with more intensive cropland may also mean greater risk of pesticide exposure (Meehan et al 2011), which has potential lethal and sublethal consequences for lady beetles and other beneficial insects (Santos et al 2017, Stuligross andWilliams et al 2021), though little is known about pesticide effects at the landscape scale (Mancini et al 2020).…”

Section: Discussionmentioning

confidence: 99%

Agriculturally Intensified Landscapes Are Associated With Reduced Body Condition of Lady Beetles

Tiede

Iuliano

Gratton

2022

Preprint

View full text Add to dashboard Cite

Context: Agricultural intensification is contributing to a global species decline. Underlying mechanisms include toxic effects of pesticides on non-target organisms and reductions in habitat and food availability. However, the effects of agricultural intensification on body condition, particularly of ecosystem service providing arthropods, are poorly understood.Objectives: Here, we investigated whether variations in the body condition of common lady beetle species (Coleoptera: Coccinellidae) can be explained by the composition and configuration of the surrounding landscape. Assuming strong seasonal variation in food availability in intensively farmed regions, we included the entire period of lady beetle activity in our study.Methods: Lady beetles were collected from April to September 2011 in 30 landscapes in southern Wisconsin, USA. We examined how body size, body density, and lipid content of the beetles responded to the percentage of intensive cropland, habitat diversity, and edge density in the surrounding landscape.Results: The strongest predictor of body condition was the percentage of intensive cropland. For every 10% increase in cropland, body density decreased by about 3.9% and fat content by 6.4%. Landscape diversity and edge density correlated with body condition of individual species.Conclusions: In agriculturally intensified landscapes, lady beetles with reduced body condition may produce fewer offspring, have lower survival rates, and exert less effective pest control. Thus, our results suggest a mechanistic link between landscape patterns and observed declines in lady beetle populations. Our results also show that the expansion of monocultures affects even common cropland-associated species such as Harmonia axyridis, suggesting a long-term decline in biocontrol services in simplified agricultural landscapes.

show abstract

“…Bij de zoektocht naar wat aan de basis ligt van de alarmerende achteruitgang van insecten in West-Europa gaat veel aandacht naar de effecten van habitatverlies, stikstofdepositie en pesticiden (Goulson, 2019;Mancini et al, 2020). Hierboven geven we alvast indirect bewijs dat habitatverlies bij (aquatische) zweefvliegen waarschijnlijk een zeer belangrijke factor is.…”

Section: Effecten Van Klimaatverandering?unclassified

IUCN Rode Lijst van de zweefvliegen in VLaanderen 2021

2021

View full text Add to dashboard Cite

Pagina 7 van Recent ontdekt (2021) ? Kleine rooddijbladloper Chalcosyrphus valgus Recent ontdekt (2020) ? Gestreepte molmzweefvlieg Chalcosyrphus eunotus Recent ontdekt (2019) Ja Gele glanszweefvlieg Callicera aenea Recent ontdekt (2016) Ja Klimopglanszweefvlieg Callicera spinolae Recent ontdekt (2018) Ja Toortsgitje Cheilosia aerea Recent ontdekt (2011) Ja Nevelgitje Cheilosia nebulosa Recent ontdekt (2014) Ja Truffelgitje Cheilosia soror Recent ontdekt (2012) Ja Geelborstelbandzweefvlieg Epistrophe cryptica Recent ontdekt (2013) ?

show abstract

Detecting landscape scale consequences of insecticide use on invertebrate communities

Cited by 7 publications

References 125 publications

Forest hoverfly community collapse: Abundance and species richness drop over four decades

Forest hoverfly community collapse: Abundance and species richness drop over four decades

Agriculturally Intensified Landscapes Are Associated With Reduced Body Condition of Lady Beetles

IUCN Rode Lijst van de zweefvliegen in VLaanderen 2021

Contact Info

Product

Resources

About