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The herbaceous layer accounts for the majority of plant biodiversity in eastern North American forests, encompassing substantial variation in life history strategy and function. One group of early‐season herbaceous understory species, colloquially referred to as spring ephemeral wildflowers, are ecologically and culturally important, but little is known about the prevalence and biogeographic patterns of the spring ephemeral strategy. Methods: We used observations collected by the Global Biodiversity Information Facility (GBIF) to quantify the ephemerality of 559 understory forb species across eastern North America and classify them according to a continuous ephemerality index (ranging from 0 = never ephemeral to 1 = always ephemeral). We then used this information to model where ephemeral forbs were most common across the landscape with the goal of identifying geographic and environmental drivers important to their distributions and ranges. Results: Only 3.4% of all understory wildflower species were spring ephemerals in all parts of their range, and 18.4% (103 species) were ephemeral in at least part of their range. Spring ephemerals peaked in absolute species richness and relative proportion at mid latitudes. Conclusions: Spring ephemeral phenology is an important shade‐avoidance strategy for a large segment of the total understory species in temperate deciduous forests. In North America, the strategy is relatively most important for forest understories at mid latitudes. The definitions of spring ephemerality we provide here serve as an important ecological context for conservation priorities and to evaluate responses of this biodiverse group to future environmental change.
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The Matter of Ephemeral Art: Craft, Spectacle, and Power in Early Modern Europe
Through a close reading and reconstruction of technical recipes for ephemeral artworks in a manuscript compiled in Toulouse ca. 1580 (BnF MS Fr. 640), we question whether ephemeral art should be treated as a distinct category of art. The illusion and artifice underpinning ephemeral spectacles shared the aims and, frequently, the materials and techniques of art more generally. Our analysis of the manuscript also calls attention to other aspects of art making that reframe consideration of the ephemeral, such as intermediary processes, durability, the theatrical and transformative potential of materials, and the imitation and preservation of lifelikeness.
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- Award ID(s):
- 1734596
- PAR ID:
- 10175798
- Date Published:
- Journal Name:
- Renaissance Quarterly
- Volume:
- 73
- Issue:
- 1
- ISSN:
- 0034-4338
- Page Range / eLocation ID:
- 78 to 131
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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- Free Publicly Accessible Full Text
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Accepted Manuscript1.0
- Journal Article:
- https://doi.org/10.1017/rqx.2019.496
