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Abstract Detail

Floristics in North America: Current needs, priorities and opportunities

Snow, Neil [1].

Floristics in North America: Current needs, priorities and opportunities.

Floristics is the intensive field surveying of a given area to document its plant diversity. Typically running two or more flowering seasons, the results of such surveys normally include detailed annotated checklists of the plant taxa, as well as aspects of species' distributions, native or non-native status, relative frequency of occurrence, comments regarding taxa of conservation concern, and other relevant variables. Floristic surveys may occur on private or public lands, on small parcels, or across large geographic regions that encompass one or more counties. Given that floristic surveys often represent a first approximation of plant diversity, some may inaccurately believe that one floristic survey area adequately documents the diversity of a given area. Despite over 300 years of plant collecting in North America, locally intensive floristic surveys continue to yield remarkably high levels of state (double-digit) records, county (triple-digit) records, and taxa new to science. These new reports reflect not just sparsely settled portions of the Rockies and Intermountain region, but also in heavily agricultural areas such as Kansas and Oklahoma, and densely populated states such as California, New York, and Texas. The southeast and Appalachians continue to yield a steady stream of new taxa, as do the western states. The newly proposed taxa are not due solely to taxonomic splitting based on molecular studies. Remote parts of Canada are now experiencing their first floristic surveys. Moreover, recent work has shown that temporal comparisons of floristics data across several decades can reveal significant (>20%) levels of taxonomic and nomenclatural change between successive floristic summaries. Given the increasing levels of human pressure on the landscape from habitat conversion, the ongoing spread of invasive species, climate change, plant blindness amongst the general population, and a perception among some that little is left to discover in North America, this timely colloquium will bring together a wide geographic and disciplinary cross-section of speakers in North America who will discuss the status of floristics in North America, and comment on opportunities, priorities, and challenges for the future. 

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North America
student projects.

Presentation Type: Colloquium Presentations
Session: CO13, Floristics in North America
Location: Tucson J/Starr Pass
Date: Wednesday, July 31st, 2019
Time: 2:00 PM
Number: CO13SUM001
Abstract ID:12
Candidate for Awards:None

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