Agricultural management intensity determines the strength of weed seed predation

Daouti, Eirini; Feit, Benjamin; Jonsson, Mattias

doi:10.1016/j.agee.2022.108132

Cited by 7 publications

(3 citation statements)

References 54 publications

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“…Agricultural intensification increases disturbance at the local level and reduces habitat heterogeneity at the landscape level, potentially adversely affecting biodiversity-driven ecosystem services (Daouti et al 2022). This intensification results in local disturbances, exemplified by the use of pesticides and synthetic fertilization (Zhao et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Agricultural landscape composition alters ant communities in maize fields more than plant diversity enrichment

PASARIBU,

RIZALI,

TARNO

et al. 2024

Biodiversitas

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Abstract. Pasaribu DN, Rizali A, Tarno H, Priawandiputra W, Johannis M, Buchori D. 2024. Agricultural landscape composition alters ant communities in maize fields more than plant diversity enrichment. Biodiversitas 25: 205-213. Fragmented natural habitats in human-modified landscapes play a crucial role in conserving biodiversity. Ants, as keystone species, are integral to terrestrial ecosystems, making it essential to comprehend the factors influencing their survival. This study investigates the impact of agricultural landscape composition and plant diversity enrichment (flowering plants) management on shaping ant communities in maize (Zea mays L.) fields. The research occurred in maize fields surrounded by other crops, semi-natural habitats, and housing areas in Malang District, East Java, Indonesia. The four agricultural areas were divided into control and treatment plots, considering landscape composition parameters, particularly Class Area (CA) and the Number of Patches (NP), measured within a 500 m radius. The landscape around the maize fields was characterized by manually digitizing land use. Six types of plant diversity enrichment were employed in this study: wild cosmos (Cosmos caudatus), white buttercup (Turnera subulata), sunflower (Helianthus annuus), long bean (Vigna unguiculata), ornamental bean (Arachis pintoi), and coral vine (Antigonon leptopus). The study was divided into the dry season (April-July 2022) and the wet season (September-December 2022). Ant sampling was conducted using pitfall traps and, based on generalized linear models, revealed that plant diversity enrichment management did not affect species richness, abundance, or composition of ants. Landscape composition positively influenced ant species richness but negatively impacted species composition, particularly the number of semi-natural habitat patches. Maize crop age also positively influenced ant species richness but negatively affected beta diversity. Wet season was also found to have a negative effect on beta diversity. In conclusion, the proportion of semi-natural habitats in agricultural landscapes and crop age contribute significantly to species richness and species composition of ants.

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Section: Introductionmentioning

confidence: 99%

Agricultural landscape composition alters ant communities in maize fields more than plant diversity enrichment

PASARIBU,

RIZALI,

TARNO

et al. 2024

Biodiversitas

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“…Each species specializes on seeds with particular characteristics (Foffová et al, 2020; Honěk et al, 2007; Lundgren & Rosentrater, 2007), and suppressing weed recruitment necessitates the maintenance of a community of granivores. Granivory can be a major source of mortality for seed banks within integrated weed management programs (Blubaugh & Kaplan, 2016; Bohan et al, 2011; Bredeson et al, 2020; Carbonne et al, 2020; Daouti et al, 2022; Lundgren et al, 2013; White et al, 2007), but the impact of granivores on weed recruitment is affected by many factors (Davis et al, 2011). The influence of invertebrate community structure on the suppression of a focal pest is a growing emphasis in applied ecology (Finke & Snyder, 2010; Greenop et al, 2018; Lundgren & Fausti, 2015; Ostandie et al, 2021), but arguably has not been sufficiently prioritized within seed–granivore interaction studies.…”

Section: Introductionmentioning

confidence: 99%

“…As a farm system transitions from frequent tillage and herbicide use to continuous no-till with diverse rotations, weed pressure shifts and declines (Anderson, 2015(Anderson, , 2016Daouti et al, 2022;Storkey & Neve, 2018). Here, we examined whether granivore-weed community interactions may be an important contributor to these changes in weed recruitment.…”

Section: Introductionmentioning

confidence: 99%

Suppression of weed communities by granivores over time in an agroecosystem

Lundgren

2023

Ecosphere

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Invertebrate granivore communities can consume numerous weed seeds in cropland, but how this granivory influences weed recruitment over time in continuous no‐till systems is unknown. Weed and surface‐active granivore communities were determined in soybeans (Glycine max) over 3 years in eastern South Dakota. We examined seed removal rates of sentinel redroot pigweed, green foxtail, and lambsquarters (Chenopodium album) seeds and applied gut content analysis of granivores to determine which species consume immuno‐marked seeds of green foxtail (Setaria viridis). Weed stands with low diversity and high biomass production were associated with granivore community complexity. In turn, granivore community complexity was associated with weed communities with low diversity and high biomass in the subsequent growing season. Fall seed consumption, as measured by seed removal rates and gut content analysis of foxtail seed markers, was positively correlated with weed recruitment in the subsequent growing season. Seed specialists behaved differently toward focal weed species than the granivore community at large. Gryllus pennsylvanicus abundance was correlated with higher green foxtail consumption and removal rates. None of the other dominant green foxtail consumers revealed a similar set of responses. We propose a feedback mechanism whereby granivore community complexity in cropland leads to larger but fewer weeds over multiple years. Weed communities with these characteristics then lead to more complex granivore communities. If these relationships persist over time with minimal disturbance in continuous no‐till cropping systems without pesticides, this feedback loop could reduce weed cover.

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Landscape perspectives for agroecological weed management. A review

Boinot,

Alignier,

Storkey

2024

Agron. Sustain. Dev.

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Faced with the biodiversity extinction crisis and climate change, alternative approaches to food production are urgently needed. Decades of chemical-based weed control have resulted in a dramatic decline in weed diversity, with negative repercussions for agroecosystem biodiversity. The simplification of cropping systems and the evolution of herbicide resistance have led to the dominance of a small number of competitive weed species, calling for a more sustainable approach that considers not only weed abundance but also community diversity and composition. Agroecological weed management involves harnessing ecological processes to minimize the negative impacts of weeds on productivity and maximize biodiversity. However, the current research effort on agroecological weed management is largely rooted in agronomy and field-scale farming practices. In contrast, the contributions of landscape-scale interventions on agroecological weed management are largely unexplored (e.g., interventions to promote pollinators and natural enemies or carbon sequestration). Here, we review current knowledge of landscape effects on weed community properties (abundance, diversity, and composition) and seed predation (a key factor in agroecological weed management). Furthermore, we discuss the ecological processes underlying landscape effects, their interaction with in-field approaches, and the implications of landscape-scale change for agroecological weed management. Notably, we found that (1) landscape context rarely affects total weed abundance; (2) configurational more than compositional heterogeneity of landscapes is associated with higher alpha, beta, and gamma weed diversity; (3) evidence for landscape effects on weed seed predation is currently limited; and (4) plant spillover from neighboring habitats is the most common interpretation of landscape effects on weed community properties, whereas many other ecological processes are overlooked. Strikingly, the drivers of weed community properties and biological regulation at the landscape scale remain poorly understood. We recommend addressing these issues to better integrate agroecological weed management into landscape-scale management, which could inform the movement towards managing farms at wider spatiotemporal scales than single fields in a single season.

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Agricultural management intensity determines the strength of weed seed predation

Cited by 7 publications

References 54 publications

Agricultural landscape composition alters ant communities in maize fields more than plant diversity enrichment

Agricultural landscape composition alters ant communities in maize fields more than plant diversity enrichment

Suppression of weed communities by granivores over time in an agroecosystem

Landscape perspectives for agroecological weed management. A review

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