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Judith Girard

Researcher at Canadian Wildlife Service

Publications -  7
Citations -  397

Judith Girard is an academic researcher from Canadian Wildlife Service. The author has contributed to research in topics: Agriculture & Crop diversity. The author has an hindex of 5, co-authored 7 publications receiving 278 citations. Previous affiliations of Judith Girard include Carleton University.

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Farmlands with smaller crop fields have higher within-field biodiversity

TL;DR: In this paper, the authors tested for consistent relationships between landscape heterogeneity and biodiversity in farmland, with a view to developing simple rules for landscape management that could increase biodiversity within farmland, and found that mean crop field size had the strongest overall effect on biodiversity measures in crop fields, and this effect was consistently negative.
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Effects of farmland heterogeneity on biodiversity are similar to—or even larger than—the effects of farming practices

TL;DR: In this article, the relative effects of six practices (annual/perennial crop, fertilizer use, herbicide use, insecticide usage, tile drainage, and tillage) versus two aspects of farmland heterogeneity (field size and crop diversity) on the diversity of herbaceous plants, woody plants, butterflies, syrphid flies, bees, carabid beetles, spiders, and birds in rural eastern Ontario, Canada.
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Key information needs to move from knowledge to action for biodiversity conservation in Canada

TL;DR: In this article, the authors identified 50 priority information needs which emphasize the importance of reviewing policies and actions and disseminating lessons learned from successes and failures; better understanding mechanisms to build public support; improving, in specific instances, understanding of the status and trends of habitats, species, ecosystems, and threats for planning and management; and mobilizing biodiversity information.
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Carbon and nitrogen stable isotope ratios differ among invertebrates from field crops, forage crops, and non-cropped land uses

TL;DR: Spiders had less variable &dgr;15N than other taxa in this study, because they occupy a single trophic level, which may make spiders more suitable for detecting changes in fertilization regimes and of responses of invertebrates to land use change.
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Foraging habitat and diet of Song Sparrows (Melospiza melodia) nesting in farmland: a stable isotope approach

TL;DR: Management actions to increase invertebrate abundance in hedgerows may benefit Song Sparrows and other farmland birds with minimal impact on crop yield, based on the proportion of seminatural and forage cover at the nest.