Habitat effects on second-order predation of the seed predator Harpalus rufipes and implications for weed seedbank management

Birthisel, Sonja K.; Gallandt, Eric R.; Jabbour, Randa

doi:10.1016/j.biocontrol.2013.12.004

Cited by 23 publications

(15 citation statements)

References 40 publications

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“…Birthisel et al . () also reported that, contrary to expectation, second‐order predation has the potential to negatively impact invertebrate seed predation rates in complex habitats than simple habitats. Overall, the effects of habitat complexity are locally specific and can range from having a very high effect to no effect at all on weed seed predation (Winqvist et al .…”

Section: Habitat Structurementioning

confidence: 78%

“…Based on Birthisel et al . () studies, habitat complexity is an important driver of second‐order predation rates, too. This is the reason that seed predators are seen in high densities in field boundaries or undisturbed places compared to within arable fields.…”

Section: Discussionmentioning

confidence: 99%

“…Hence, weed management programs should also aim to leave crop residues in crop fields at the end of the growing season after crop harvest to generate microhabitats for predators when weed seeds shed. Based on Birthisel et al (2014) studies, habitat complexity is an important driver of second-order predation rates, too. This is the reason that seed predators are seen in high densities in field boundaries or undisturbed places compared to within arable fields.…”

Section: Discussionmentioning

confidence: 99%

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Factors that influence the level of weed seed predation: A review

Sarabi

2019

Weed Biology and Management

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Herbicides applied alone have failed to reduce weed populations in agricultural ecosystems. The use of this management strategy has followed other problems such as damage to ecosystems and organisms that live in it. Herbicide resistance in weeds has also occurred more quickly based on the application of herbicides. Today, most scientists are looking for new integrated weed management programs in agricultural ecosystems. Biological control is one of the most effective ways of weed management. In this way, living organisms are used to reduce and control weed species in arable lands. Weed seed predators, including predispersal and postdispersal predators as biological control agents, can be primary factors of weed seed mortality in agricultural ecosystems. This review has discussed factors influencing seed predator populations, activity, and granivory. Knowledge of the interrelations between factors and seed predators can contribute to designing future strategies that augment weed seed predator activity and enhance weed seed consumption as a component of an integrated weed management system.

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Section: Habitat Structurementioning

confidence: 78%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Factors that influence the level of weed seed predation: A review

Sarabi

2019

Weed Biology and Management

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“…There is a temporal aspect to predation rates, with highest activity in mid-to late-summer and tapering off in the fall, and there may be an interactive effect of other management practices, such as tillage, with the ability of seed predators to find seeds [77]. Seed predators have been shown to prefer complex habitats with cover from their predators, such as birds [78]. Therefore, there may be an interaction between cover crops and weed seed predators, since cover crops may provide complex habitat [79].…”

Section: Animalsmentioning

confidence: 99%

Shifting the Paradigm: An Ecological Systems Approach to Weed Management

Gage

Schwartz-Lazaro

2019

Agriculture

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Weeds have been historically, and are still today, the primary and most economically important pest in agriculture. Several selection pressures associated with weed management, such as an overreliance on herbicides, have promoted the rapid evolution of herbicide-resistant weeds. Integrated Weed Management (IWM) is promoted as an ecological systems approach, through the combination of biological, chemical, cultural, ecological, and mechanical control methods. The concept of a systems approach is defined as managing weeds by combining practice and knowledge with the goals of increasing yield and minimizing economic loss, minimizing risks to human health and the environment, and reducing energy requirements and off-target impacts. The reliance on herbicides in modern cropping systems has shifted the management focus from requiring intimate knowledge of biology, ecology, and ecological systems to herbicide chemistry, mixes, and rotations, application technology, and herbicide-tolerant crop traits. Here, an ecological systems approach is considered, examining new trends and technologies in relation to IWM and weed ecology. Prevention of spread, seedbank management, crop rotations, tillage, cover crops, competitive cultivars, biological weed control, and future solutions in concept-only are presented, and knowledge gaps are identified where research advancements may be possible. An ecological systems approach will provide improved stewardship of new herbicide technologies and reduce herbicide resistance evolution through diversification of selection pressures. Agroecological interactions should be studied in light of new, developing weed control technologies. The science of weed management needs to refocus on the foundations of weed biology and ecology to enable an ecological systems approach and promote agricultural sustainability.

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“…Roschewitz et al, 2005) or via antagonistic interactions between natural enemies by intraguild predation (Martin et al, 2013). Although landscape effects on carabids can be limited (Mader et al, 2017), their resource utilisation and foraging success (and survival) may differ according to the presence of competitors, predators and prey (Davey et al, 2013;Birthisel et al, 2014;Orros et al, 2015). Predators and competitors of carabids, such as spiders (Schmidt et al, 2005) or birds (Smith et al, 2010), may depend on landscape characteristics.…”

Section: Trophic Responsementioning

confidence: 99%

Agri‐environmental schemes affect the trophic niche size and diet of common carabid species in agricultural landscapes

Mader

Diehl

Wolters

et al. 2018

Ecological Entomology

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1. Carabids are abundant in agroecosystems and provide biocontrol services by feeding on weed seeds and pests. We compare the effects of two fundamentally different agri-environmental schemes (AES) on the numeric and trophic responses of four common carabid species: Anchomenus dorsalis, Poecilus cupreus, Pseudoophonus rufipes and Pterostichus melanarius.2. In six cereal fields under organic farming and six sown flowering fields, 10 290 individuals of the four species were sampled to quantify their numeric response. The activity density of all species was higher in organically managed cereal fields compared to flowering fields.3. We analysed naturally occurring stable isotope ratios of carbon and nitrogen in 138 carabid individuals to quantify isotopic niches and the diet contribution of soilversus plant-based resources. Resources from the soil ('brown') energy channel were more important than resources from the plant ('green') energy channel in the diet of all species, particularly in P. melanarius.4. Isotopic niches were larger for P. rufipes and P. melanarius in flowering fields than in organically managed cereal fields. Moreover, differences between AES types were observed in the diet contribution derived from both energy channels: A. dorsalis and P. cupreus incorporated higher proportions of plant-based resources in organically managed cereal fields compared to flowering fields. 5. Similar numeric, but different trophic responses suggest that AES type may alter arthropod food webs beyond simple changes in carabid densities. Such 'hidden' modifications in the resource utilisation of generalist predators deserve more attention to adequately evaluate the ecological consequences of AES.

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Habitat effects on second-order predation of the seed predator Harpalus rufipes and implications for weed seedbank management

Cited by 23 publications

References 40 publications

Factors that influence the level of weed seed predation: A review

Factors that influence the level of weed seed predation: A review

Shifting the Paradigm: An Ecological Systems Approach to Weed Management

Agri‐environmental schemes affect the trophic niche size and diet of common carabid species in agricultural landscapes

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