Results 51 to 60 of about 5,096 (214)
Evaluating the empirical basis for threat attribution in the IUCN Red List
Abstract Understanding the impacts of different threats on species is key to successful conservation interventions and policies. The International Union for Conservation of Nature (IUCN) assesses threats to species, and the organization's Red List of Threatened Species is a key conservation tool.
Ena Humphries +5 more
wiley +1 more source
No abstract available.
Hugo Bezuidenhout
doaj +1 more source
Stem Carbon Dioxide Efflux of Lignophytes Exceeds That of Cycads and Arborescent Monocots
Tree stem CO2 efflux (Es) can be substantial and the factors controlling ecosystem-level Es are required to fully understand the carbon cycle and construct models that predict atmospheric CO2 dynamics.
Thomas E. Marler
doaj +1 more source
Darwin's "Abominable Mystery": the role of RNA interference in the evolution of flowering plants [PDF]
Darwin was famously concerned that the sudden appearance and rapid diversification of flowering plants in the mid-Cretaceous could not have occurred by gradual change.
Cibrian-Jaramillo, A. +1 more
core +1 more source
Early evolutionary history of the seed
ABSTRACT The seed is an essential stage in the life history of gymnospermous and angiospermous plants, facilitating both their survival and dispersal. We reappraise knowledge of the evolutionary history of the gymnospermous seed, from its origin in the late Devonian through to the well‐known end‐Permian extinctions – an interval encompassing the ...
Richard M. Bateman +2 more
wiley +1 more source
A two‐phase SNP discovery and assay‐development strategy was used to resolve species boundaries within the tree genus Greyia, as overlapping phenotypes and distributions limit accurate identification. From 47,726 genome‐wide SNPs generated by 3RAD sequencing, a diagnostic 23‐SNP Type panel was developed and validated, successfully distinguishing G ...
Iné Botha +4 more
wiley +1 more source
The study identified 41 priority conservation grids and 8 critical conservation gaps not covered by national reserves for medicinal gymnosperms. We proposed a practical, multi‐dimensional framework for their conservation. ABSTRACT To elucidate the geographical distribution patterns and hotspots of medicinal gymnosperms in China, providing a scientific ...
Lisi Hai +8 more
wiley +1 more source
Heterocyte-forming cyanobacteria form symbiotic relationships with several lineages of plants. Here, twenty (20) strains of endosymbiotic cyanobacteria (cyanobionts) with Nostoc-like morphologies were isolated from the highly specialized coralloid roots ...
Melissa H. Pecundo +6 more
doaj +1 more source
Rethinking cycad metabolite research
Cycads are among the most ancient of extant Spermatophytes, and are known for their numerous pharmacologically active compounds. One compound in particular, β-methylamino-L-alanine (BMAA), has been implicated as the cause of amyotrophic lateral sclerosis/Parkinson dementia complex (ALS/PDC) on Guam.
Laura R, Snyder, Thomas E, Marler
openaire +2 more sources
ABSTRACT Butterflies are one of Australia's most popular and well‐studied invertebrate groups. Much butterfly research in the country is either led or supported by amateur entomologists and citizen scientists, and yet despite this, the recent and dramatic increase in the volume of publicly accessible citizen science butterfly observations has received ...
Louis J. Backstrom
wiley +1 more source

