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A method for the objective selection of landscape-scale study regions and sites at the national level

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A method for the objective selection of landscape-scale study regions and sites at the national level. / Gillespie, Mark A.K.; Baude, Mathilde; Biesmeijer, Jacobus; Boatman, Nigel; Budge, Giles E.; Crowe, Andrew; Memmott, Jane; Morton, R. Daniel; Pietravalle, Stephane; Potts, Simon G.; Senapathi, Deepa; Smart, Simon M.; Kunin, William E.

In: Methods in Ecology and Evolution, 24.04.2017.

Research output: Contribution to journalArticle

Harvard

Gillespie, MAK, Baude, M, Biesmeijer, J, Boatman, N, Budge, GE, Crowe, A, Memmott, J, Morton, RD, Pietravalle, S, Potts, SG, Senapathi, D, Smart, SM & Kunin, WE 2017, 'A method for the objective selection of landscape-scale study regions and sites at the national level', Methods in Ecology and Evolution. https://doi.org/10.1111/2041-210X.12779

APA

Gillespie, M. A. K., Baude, M., Biesmeijer, J., Boatman, N., Budge, G. E., Crowe, A., ... Kunin, W. E. (2017). A method for the objective selection of landscape-scale study regions and sites at the national level. Methods in Ecology and Evolution. https://doi.org/10.1111/2041-210X.12779

Vancouver

Gillespie MAK, Baude M, Biesmeijer J, Boatman N, Budge GE, Crowe A et al. A method for the objective selection of landscape-scale study regions and sites at the national level. Methods in Ecology and Evolution. 2017 Apr 24. https://doi.org/10.1111/2041-210X.12779

Author

Gillespie, Mark A.K. ; Baude, Mathilde ; Biesmeijer, Jacobus ; Boatman, Nigel ; Budge, Giles E. ; Crowe, Andrew ; Memmott, Jane ; Morton, R. Daniel ; Pietravalle, Stephane ; Potts, Simon G. ; Senapathi, Deepa ; Smart, Simon M. ; Kunin, William E. / A method for the objective selection of landscape-scale study regions and sites at the national level. In: Methods in Ecology and Evolution. 2017.

Bibtex

@article{69ea49100494469abe5dcb8e0c7390d0,
title = "A method for the objective selection of landscape-scale study regions and sites at the national level",
abstract = "Ecological processes operating on large spatio-temporal scales are difficult to disentangle with traditional empirical approaches. Alternatively, researchers can take advantage of ‘natural’ experiments, where experimental control is exercised by careful site selection. Recent advances in developing protocols for designing these ‘pseudo-experiments’ commonly do not consider the selection of the focal region and predictor variables are usually restricted to two. Here, we advance this type of site selection protocol to study the impact of multiple landscape scale factors on pollinator abundance and diversity across multiple regions. Using datasets of geographic and ecological variables with national coverage, we applied a novel hierarchical computation approach to select study sites that contrast as much as possible in four key variables, while attempting to maintain regional comparability and national representativeness. There were three main steps to the protocol: (i) selection of six 100 × 100 km2 regions that collectively provided land cover representative of the national land average, (ii) mapping of potential sites into a multivariate space with axes representing four key factors potentially influencing insect pollinator abundance, and (iii) applying a selection algorithm which maximized differences between the four key variables, while controlling for a set of external constraints.   Validation data for the site selection metrics were recorded alongside the collection of data on pollinator populations during two field campaigns. While the accuracy of the metric estimates varied, the site selection succeeded in objectively identifying field sites that differed significantly in values for each of the four key variables. Between-variable correlations were also reduced or eliminated, thus facilitating analysis of their separate effects. This study has shown that national datasets can be used to select randomized and replicated field sites objectively within multiple regions and along multiple interacting gradients. Similar protocols could be used for studying a range of alternative research questions related to land use or other spatially explicit environmental variables, and to identify networks of field sites for other countries, regions, drivers and response taxa in a wide range of scenarios.",
keywords = "Accidental experiments, Experimental design, Floral resources, Habitat diversity, Honeybees, Insecticides, Natural experiments, Pollinators, Remote sensing, Site selection",
author = "Gillespie, {Mark A.K.} and Mathilde Baude and Jacobus Biesmeijer and Nigel Boatman and Budge, {Giles E.} and Andrew Crowe and Jane Memmott and Morton, {R. Daniel} and Stephane Pietravalle and Potts, {Simon G.} and Deepa Senapathi and Smart, {Simon M.} and Kunin, {William E.}",
year = "2017",
month = "4",
day = "24",
doi = "10.1111/2041-210X.12779",
language = "English",
journal = "Methods in Ecology and Evolution",
issn = "2041-210X",
publisher = "Wiley",

}

RIS - suitable for import to EndNote

TY - JOUR

T1 - A method for the objective selection of landscape-scale study regions and sites at the national level

AU - Gillespie, Mark A.K.

AU - Baude, Mathilde

AU - Biesmeijer, Jacobus

AU - Boatman, Nigel

AU - Budge, Giles E.

AU - Crowe, Andrew

AU - Memmott, Jane

AU - Morton, R. Daniel

AU - Pietravalle, Stephane

AU - Potts, Simon G.

AU - Senapathi, Deepa

AU - Smart, Simon M.

AU - Kunin, William E.

PY - 2017/4/24

Y1 - 2017/4/24

N2 - Ecological processes operating on large spatio-temporal scales are difficult to disentangle with traditional empirical approaches. Alternatively, researchers can take advantage of ‘natural’ experiments, where experimental control is exercised by careful site selection. Recent advances in developing protocols for designing these ‘pseudo-experiments’ commonly do not consider the selection of the focal region and predictor variables are usually restricted to two. Here, we advance this type of site selection protocol to study the impact of multiple landscape scale factors on pollinator abundance and diversity across multiple regions. Using datasets of geographic and ecological variables with national coverage, we applied a novel hierarchical computation approach to select study sites that contrast as much as possible in four key variables, while attempting to maintain regional comparability and national representativeness. There were three main steps to the protocol: (i) selection of six 100 × 100 km2 regions that collectively provided land cover representative of the national land average, (ii) mapping of potential sites into a multivariate space with axes representing four key factors potentially influencing insect pollinator abundance, and (iii) applying a selection algorithm which maximized differences between the four key variables, while controlling for a set of external constraints.   Validation data for the site selection metrics were recorded alongside the collection of data on pollinator populations during two field campaigns. While the accuracy of the metric estimates varied, the site selection succeeded in objectively identifying field sites that differed significantly in values for each of the four key variables. Between-variable correlations were also reduced or eliminated, thus facilitating analysis of their separate effects. This study has shown that national datasets can be used to select randomized and replicated field sites objectively within multiple regions and along multiple interacting gradients. Similar protocols could be used for studying a range of alternative research questions related to land use or other spatially explicit environmental variables, and to identify networks of field sites for other countries, regions, drivers and response taxa in a wide range of scenarios.

AB - Ecological processes operating on large spatio-temporal scales are difficult to disentangle with traditional empirical approaches. Alternatively, researchers can take advantage of ‘natural’ experiments, where experimental control is exercised by careful site selection. Recent advances in developing protocols for designing these ‘pseudo-experiments’ commonly do not consider the selection of the focal region and predictor variables are usually restricted to two. Here, we advance this type of site selection protocol to study the impact of multiple landscape scale factors on pollinator abundance and diversity across multiple regions. Using datasets of geographic and ecological variables with national coverage, we applied a novel hierarchical computation approach to select study sites that contrast as much as possible in four key variables, while attempting to maintain regional comparability and national representativeness. There were three main steps to the protocol: (i) selection of six 100 × 100 km2 regions that collectively provided land cover representative of the national land average, (ii) mapping of potential sites into a multivariate space with axes representing four key factors potentially influencing insect pollinator abundance, and (iii) applying a selection algorithm which maximized differences between the four key variables, while controlling for a set of external constraints.   Validation data for the site selection metrics were recorded alongside the collection of data on pollinator populations during two field campaigns. While the accuracy of the metric estimates varied, the site selection succeeded in objectively identifying field sites that differed significantly in values for each of the four key variables. Between-variable correlations were also reduced or eliminated, thus facilitating analysis of their separate effects. This study has shown that national datasets can be used to select randomized and replicated field sites objectively within multiple regions and along multiple interacting gradients. Similar protocols could be used for studying a range of alternative research questions related to land use or other spatially explicit environmental variables, and to identify networks of field sites for other countries, regions, drivers and response taxa in a wide range of scenarios.

KW - Accidental experiments

KW - Experimental design

KW - Floral resources

KW - Habitat diversity

KW - Honeybees

KW - Insecticides

KW - Natural experiments

KW - Pollinators

KW - Remote sensing

KW - Site selection

UR - http://www.scopus.com/inward/record.url?scp=85018906199&partnerID=8YFLogxK

U2 - 10.1111/2041-210X.12779

DO - 10.1111/2041-210X.12779

M3 - Article

JO - Methods in Ecology and Evolution

JF - Methods in Ecology and Evolution

SN - 2041-210X

ER -