Design for ground beetle abundance and diversity sampling within the National Ecological Observatory Network

Hoekman, David; LeVan, Katherine E.; Gibson, Cara M.; Ball, George E.; Browne, Robert A.; Davidson, Robert L.; Erwin, Terry L.; Knisley, C. Barry; LaBonte, James R.; Lundgren, Jonathan G.; Maddison, David R.; Moore, Wendy; Niemelä, Jari; Ober, Karen A.; Pearson, David L.; Spence, John R.; Work, Timothy T.

doi:10.1002/ecs2.1744

Cited by 55 publications

(61 citation statements)

References 41 publications

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“…Carabids and other epigeic arthropods are most commonly sampled using pitfall traps (Figure 4a) [83,84,85]. This trap type is the method of choice for carabid abundance and diversity sampling within the National Ecological Observatory Network (NEON), a continental-scale program to increase our knowledge of the ecological impacts of climate change, land-use patterns, and invasive species on biodiversity and ecosystem processes in the USA [86]. Pitfall traps have been used to collect and quantify epigeic arthropods since at least the early 1900s [87,88].…”

Section: Natural Enemies/pest Managementmentioning

confidence: 99%

A Review of Sampling and Monitoring Methods for Beneficial Arthropods in Agroecosystems

McCravy

2018

Insects

110

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Beneficial arthropods provide many important ecosystem services. In agroecosystems, pollination and control of crop pests provide benefits worth billions of dollars annually. Effective sampling and monitoring of these beneficial arthropods is essential for ensuring their short- and long-term viability and effectiveness. There are numerous methods available for sampling beneficial arthropods in a variety of habitats, and these methods can vary in efficiency and effectiveness. In this paper I review active and passive sampling methods for non-Apis bees and arthropod natural enemies of agricultural pests, including methods for sampling flying insects, arthropods on vegetation and in soil and litter environments, and estimation of predation and parasitism rates. Sample sizes, lethal sampling, and the potential usefulness of bycatch are also discussed.

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Section: Natural Enemies/pest Managementmentioning

confidence: 99%

A Review of Sampling and Monitoring Methods for Beneficial Arthropods in Agroecosystems

McCravy

2018

Insects

110

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“…This was acknowledged in the traditional literature on carabid synecology (see the review in [ 52 ]), and by several authors working on carabid assemblages with an "abundance approach", as e.g. [ 28 , 53 – 57 ].…”

Section: Methodsmentioning

confidence: 99%

Ground beetles in Mediterranean olive agroecosystems: Their significance and functional role as bioindicators (Coleoptera, Carabidae)

et al. 2018

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The impact of agricultural practices and soil management on the communities of arthropods living in the agricultural landscape is acknowledged as a critical issue by the literature, and it needs to be better investigated to improve the ecological sustainability of agriculture. In the present study, we aimed to study how soil management affect carabid species distribution in one of the most typical agroecosystem of the Mediterranean region, i.e. the olive grove. In South Italy olive plantations feature different types of soil management, from tillage to half- or full-cover cropping. Species distribution has been examined for a total of 10,189 individuals and 62 species collected from 17 sites. Notably from our analysis we have observed that three factors (climax vegetation, soil features and soil management) explained half of the data variability. The composition of species groupings mirrors both bioclimatic conditions (climax vegetation) and soil features, especially watering, while soil management affects the species distribution, with different intensity from site to site. Eleven species have been recognized as the most abundant in the different facets of the studied olive groves and consequently designated as characteristics of the olive agroecosystem. The species traits of the sampled species have been weighted for a compelling evaluation of the effects of agricultural management on biodiversity, showing uniform traits distribution when coping with the ecological factors that characterize the different plantation facets. We have found that carabid beetles can be used as model organisms for studying the effects of agricultural practices. Our study suggests that the interaction of man-induced trasformation with the natural background of the olive agroecosystem may be difficult to disentangle, so that such complexity must be taken into account when carabid beetles are expected to provide an ecosystem service for good agricultural practices.

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“…Representative networks inform more comprehensively on long term change over large areas without bias to particular systems. They have been implemented effectively to provide spatial surveys of above-and belowground biodiversity (Bastin et al 2017;Lemetre et al 2017;Baruch et al 2018), and to monitor ecosystem condition in relation to disturbance, land use and climate change (Hoekman et al, 2017;McCord et al 2017).…”

Section: Introductionmentioning

confidence: 99%

“…The strategic placement of a limited number of field plots could be implemented in many different ways, ranging between incautious practicality and statistical purism (Roleček et al 2007). Survey and monitoring networks have been established using systematic grid (Messer et al 1991;Goring et al 2016), stratified random (Michaelsen et al 1994;Danz et al 2005;Carvalho et al 2016;Hoekman et al, 2017;van Etten & Fox 2017) and generalized random-tessellation stratified (GRTS; Larsen et al 2008;McCord et al 2017;van Dam-Bates et al 2017) designs. However, some large surveys of terrestrial ecosystems have employed preferential sampling in a bid to include examples of as many ecotypes as possible (Roleček et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Stocktaking the environmental coverage of a continental ecosystem observation network

Guerin

Williams

Sparrow

et al. 2020

Preprint

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Field-based sampling of terrestrial habitats at continental scales is required to build ecosystem observation networks. However, a key challenge for detecting change in ecosystem composition, structure and function is to obtain a representative sample of habitats. Representative sampling contributes to ecological validity when analysing large spatial surveys, but field resources are limited and representativeness may differ markedly from purely practical sampling strategies to statistically rigorous ones. Here, we report a post hoc assessment of the coverage of environmental gradients as a surrogate for ecological coverage by a continental-scale survey of the Australian Terrestrial Ecosystem Research Network (TERN). TERN's surveillance program maintains a network of ecosystem observation plots that were init ially established in the rangelands through a stratification method (clustering of bioregions by environment) and Ausplots methodology. Subsequent site selection comprised gap filling combined with opportunistic sampling. Firstly, we confirmed that environmental coverage has been a good surrogate for ecological coverage. The cumulative sampling of environments and plant species composition over time were strongly correlated (based on mean multivariate dispersion; r = 0.93). We then compared the environmental sampling of Ausplots to 100,000 background points and a set of retrospective (virtual) sampling schemes: systematic grid, simple random, stratified random, and generalised random-tessellation stratified (GRTS). Differences were assessed according to sampling densities along environmental gradients, and multivariate dispersion (environmental space represented via multi-dimensional scaling). Ausplots outperformed systematic grid, simple random and GRTS in coverage of environmental space (Tukey HSD of mean dispersion, p < .001). GRTS site selection obtained similar coverage to Ausplots when employing the same bioregional stratification. Stratification by climatic zones generated the highest environmental coverage (p < .001), but the resulting sampling densities over-represented mesic coastal habitats. The Ausplots stratification by bioregions implemented under practical constraints represented complex environments well compared to statistically oriented or spatially even samples. However, potential statistical inference and power also depend on spatial and temporal replication, unbiased site selection, and accurate field measurements relative to the magnitude of change. A key conclusion is that environmental, rather than spatial, stratification is required to maximise ecological coverage across continental ecosystem observation networks.

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Design for ground beetle abundance and diversity sampling within the National Ecological Observatory Network

Cited by 55 publications

References 41 publications

A Review of Sampling and Monitoring Methods for Beneficial Arthropods in Agroecosystems

A Review of Sampling and Monitoring Methods for Beneficial Arthropods in Agroecosystems

Ground beetles in Mediterranean olive agroecosystems: Their significance and functional role as bioindicators (Coleoptera, Carabidae)

Stocktaking the environmental coverage of a continental ecosystem observation network

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