Bee diversity in crop fields is influenced by remotely-sensed nesting resources in surrounding permanent grasslands

Carrié, Romain; Lopes, Maïlys; Ouin, Annie; Andrieu, Émilie

doi:10.1016/j.ecolind.2018.03.054

Cited by 24 publications

(20 citation statements)

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“…Results yielded evidence that fine-scale remote-sensing data may be useful to predict favorable habitats for the occurrence of small-sized species, with small home-ranges and specialized niches in spatially and temporally heterogeneous environments (e.g., [84]). Using ground-data from vole surveys across different periods, we are able to demonstrate that spectral, spatial, and temporal information from Sentinel-2 (Sentinel-2A MSI Level-1C) multispectral images analysis is significantly important to predict the Cabrera vole occurrence.…”

Section: Discussionmentioning

confidence: 99%

Predicting Microhabitat Suitability for an Endangered Small Mammal Using Sentinel-2 Data

et al. 2020

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Accurate mapping is a main challenge for endangered small-sized terrestrial species. Freely available spatio-temporal data at high resolution from multispectral satellite offer excellent opportunities for improving predictive distribution models of such species based on fine-scale habitat features, thus making it easier to achieve comprehensive biodiversity conservation goals. However, there are still few examples showing the utility of remote-sensing-based products in mapping microhabitat suitability for small species of conservation concern. Here, we address this issue using Sentinel-2 sensor-derived habitat variables, used in combination with more commonly used explanatory variables (e.g., topography), to predict the distribution of the endangered Cabrera vole (Microtus cabrerae) in agrosilvopastorial systems. Based on vole surveys conducted in two different seasons over a~176,000 ha landscape in Southern Portugal, we assessed the significance of each predictor in explaining Cabrera vole occurrence using the Boruta algorithm, a novel Random forest variant for dealing with high dimensionality of explanatory variables. Overall, results showed a strong contribution of Sentinel-2-derived variables for predicting microhabitat suitability of Cabrera voles. In particular, we found that photosynthetic activity (NDI45), specific spectral signal (SWIR1), and landscape heterogeneity (Rao's Q) were good proxies of Cabrera voles' microhabitat, mostly during temporally greener and wetter conditions. In addition to remote-sensing-based variables, the presence of road verges was also an important driver of voles' distribution, highlighting their potential role as refuges and/or corridors. Overall, our study supports the use of remote-sensing data to predict microhabitat suitability for endangered small-sized species in marginal areas that potentially hold most of the biodiversity found in human-dominated landscapes. We believe our approach can be widely applied to other species, for which detailed habitat mapping over large spatial extents is difficult to obtain using traditional descriptors. This would certainly contribute to improving conservation planning, thereby contributing to global conservation efforts in landscapes that are managed for multiple purposes.

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Section: Discussionmentioning

confidence: 99%

Predicting Microhabitat Suitability for an Endangered Small Mammal Using Sentinel-2 Data

et al. 2020

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“…Assembling a list of species within a community permits studies of bee responses to their environment (including disturbances) based on their functional traits, of which nesting location is one (Williams et al ., 2010). For example, several studies have examined the effects of different anthropogenic and environmental factors (agricultural management (Martins et al ., 2018), agricultural intensification (Williams et al ., 2010; Renauld et al ., 2016; Carrié et al ., 2018), fire (Burkle et al ., 2019; Galbraith et al ., 2019), habitat management (Buckles & Harmon‐Threatt, 2019), etc.) on ground‐nesting bee abundance and diversity.…”

Section: Methods For Studying the Nesting Habitat Of Ground‐nesting Beesmentioning

confidence: 99%

Nesting habitat of ground‐nesting bees: a review

Antoine

Forrest

2020

Ecological Entomology

133

122

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1. About 3/4 of all wild bee species nest in the soil and spend much of their life cycle underground. These insects require suitable environmental conditions for nest construction and for the development and survival of their offspring. However, there is little quantitative information on the nesting habitat requirements and preferences of ground-nesting bees. Moreover, there are almost no data on the effects of nesting conditions on these bees' fitness. 2. Here, to better understand the factors that influence nest-site selection in ground-nesting bees, we synthesise the literature on the nesting-habitat associations of these important pollinators. We also review techniques that can be used to study the nesting preferences of ground-nesting bees. 3. Our review reveals enormous variation among bee species in their associations with such nesting-habitat attributes as soil texture, compaction, moisture, temperature, ground surface features, and proximity to conspecifics or floral resources. However, more studies-particularly experimental ones-are needed to segregate the influence of each factor on bees' choices of nesting location, since multiple factors are often correlated. It is also unclear whether nesting-habitat associations vary geographically or seasonally within species, or phylogenetically among ground-nesting bee species, partly because we lack information on nesting habitat for many species. 4. We argue that studies using established habitat-selection methods are essential to properly identify nesting-habitat preferences of ground-nesting species. Finally, more research on nesting ecology is needed (especially in agroecosystems) to determine how best to support this diverse group of bees and the vital ecosystem service they provide.

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“…This includes dead twigs, standing dead trees, and downed logs for species that nest in wood (Grundel et al ., 2010) as well as relatively undisturbed soil for ground‐nesting species. The local availability of nesting resources has been shown to strongly influence bee communities (Potts et al ., 2005; Grundel et al ., 2010; Carrié et al ., 2018) and is thus an important consideration for improving pollinator habitat.…”

Section: Introductionmentioning

confidence: 99%

Frequent prescribed fires favour ground‐nesting bees in southeastern U.S. forests

Ulyshen

Wilson

Ohlson

et al. 2021

Insect Conserv Diversity

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Although most efforts to improve habitat for bees and other pollinators focus on floral resources, it is also important to consider the availability and suitability of nesting habitats in relation to various management activities. We used soil emergence traps to compare the number of ground‐nesting bees among treatments in a long‐term fire frequency study in Florida. We regularly moved the traps, a strategy that appears to greatly improve the efficacy of this sampling approach. The experiment consisted of forested plots that have been burned annually, biennially or triennially for the past six decades as well as unburned reference plots. Bee abundance was significantly lower in the unburned plots than in any of the burn treatments and was higher in annual plots than triennial plots. Bee richness was significantly higher in plots burned annually than in unburned plots. Bee Shannon's diversity was significantly higher in plots burned biennially or triennially than in unuburned plots. Evenness was significantly lower in annually burned plots than in any of the other treatments. Indicator species analysis found six bee species to be significantly associated with one or more burn treatments. Four of them were strongly associated with plots burned annually or biennially while two species were significantly associated with plots burned biennially or triennially. None was significantly associated with unburned plots. Our findings suggest that frequent fires generally improve habitat for ground‐nesting bees in southeastern U.S. forests and that tolerances for particular burn frequencies vary by species.

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Bee diversity in crop fields is influenced by remotely-sensed nesting resources in surrounding permanent grasslands

Cited by 24 publications

References 50 publications

Predicting Microhabitat Suitability for an Endangered Small Mammal Using Sentinel-2 Data

Predicting Microhabitat Suitability for an Endangered Small Mammal Using Sentinel-2 Data

Nesting habitat of ground‐nesting bees: a review

Frequent prescribed fires favour ground‐nesting bees in southeastern U.S. forests

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