No abstract

Questions: Is dormancy selected as a means by which a seed defers germination until suitable environmental conditions occur? Are plant species in frost-free and drought-free environments less likely to have some form of dormancy than species from environments with frost and/or drought? Are there any relationships between dormancy and three important plant traits: seed size, plant longevity, and growth form? Methods: Data from the literature including 3164 species were compiled. We quantified the relationship between dormancy and seed size (1795 species), plant longevity (183 species), and growth form (3164 species). Results: Plant species of environments with frost and/or drought were more likely to possess some form of seed dormancy (morphological, physiological, morphophysiological, or physical) than species in more benign environments. Seeds exhibiting some form of dormancy were lighter in weight and generally more prevalent among herbaceous species. Woody plants had a larger proportion of non-dormant seeds. There was a broad overlap in seed size between species with dormant and non-dormant seeds. We also found no significant relationship between seed dormancy and plant longevity.

No abstract

We introduce the AusTraits database - a compilation of measurements of plant traits for taxa in the Australian flora (hereafter AusTraits). AusTraits synthesises data on 375 traits across 29230 taxa from field campaigns, published literature, taxonomic monographs, and individual taxa descriptions. Traits vary in scope from physiological measures of performance (e.g. photosynthetic gas exchange, water-use efficiency) to morphological parameters (e.g. leaf area, seed mass, plant height) which link to aspects of ecological variation. AusTraits contains curated and harmonised individual-, species- and genus-level observations coupled to, where available, contextual information on site properties. This data descriptor provides information on version 2.1.0 of AusTraits which contains data for 937243 trait-by-taxa combinations. We envision AusTraits as an ongoing collaborative initiative for easily archiving and sharing trait data to increase our collective understanding of the Australian flora.

We introduce the AusTraits database - a compilation of values of plant traits for taxa in the Australian flora (hereafter AusTraits). AusTraits synthesises data on 448 traits across 28,640 taxa from field campaigns, published literature, taxonomic monographs, and individual taxon descriptions. Traits vary in scope from physiological measures of performance (e.g. photosynthetic gas exchange, water-use efficiency) to morphological attributes (e.g. leaf area, seed mass, plant height) which link to aspects of ecological variation. AusTraits contains curated and harmonised individual- and species-level measurements coupled to, where available, contextual information on site properties and experimental conditions. This article provides information on version 3.0.2 of AusTraits which contains data for 997,808 trait-by-taxon combinations. We envision AusTraits as an ongoing collaborative initiative for easily archiving and sharing trait data, which also provides a template for other national or regional initiatives globally to fill persistent gaps in trait knowledge.

No abstract

No abstract

RESUMENSe estudió la diversidad de especies de leguminosas en el norte del estado de Nuevo León, contabilizando 98 taxa en total. Se registraron 38 géneros, 94 especies y 26 taxa infraespecíficos de este grupo de plantas; la familia Fabaceae comprende 18 géneros y 42 especies, Mimosaceae 10 y 30 y Caesalpiniaceae 10 y 22 respectivamente. Los géneros con mayor número de especies son Acacia (12), Dalea (10), Mimosa (6), Senna (5); Caesalpinia (4) y Bauhinia (4). Del total de 98 taxa, las leguminosas arbustivas y herbáceas son las más abundantes en la zona, representando 47% (46 especies) y 46% (45 especies) respectivamente, las arbóreas representan 7% (7). La mayor cantidad de taxa se registró en el matorral subinerme (52), matorral submontano (48) y bosque de encino-pino (44), mientras que los mezquitales albergan el menor número de especies (23).Palabras clave: Diversidad, flora, leguminosas, México, Nuevo León. ABSTRACTA study of the diversity of legumes in the northern part of the state of Nuevo León was undertaken. 38 genera, 94 species and 26 infraspecific taxa of legumes were recorded. The family Fabaceae comprises 18 genera and 42 species, Mimosaceae 10 and 30 and Caesalpiniaceae 10 and 22 respectivelly. The genera with highest number of species are Acacia (12), Dalea (10), Mimosa (6), Senna (5), Caesalpinia (4) and Bauhinia (4). Shrubby legumes are the most abundant in the zone, representing 47% (46 species); the herbaceous ones constitute 46% (45) and the arboreal ones comprise 7% (7). The highest number of taxa was recorded on semithorn shrubland (52) piedmont scrub (48), oak-pine forest (44), while the mezquite shrublands shelter the lowest number of species (23).