Results 51 to 60 of about 5,096 (214)

Evaluating the empirical basis for threat attribution in the IUCN Red List

open access: yesConservation Biology, EarlyView.
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

Assessment results (2015–2018) of re-established poached cycad trees in Addo Elephant National Park, Eastern Cape, South Africa

open access: yesKoedoe: African Protected Area Conservation and Science, 2020
No abstract available.
Hugo Bezuidenhout
doaj   +1 more source

Stem Carbon Dioxide Efflux of Lignophytes Exceeds That of Cycads and Arborescent Monocots

open access: yesAgronomy, 2022
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]

open access: yes, 2009
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

open access: yesBiological Reviews, Volume 101, Issue 3, Page 1511-1553, June 2026.
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

3RAD‐Guided SNP Discovery for Species Identification and Conservation of the Medicinal Southern African Tree Genus Greyia Hook. & Harv.

open access: yesEcology and Evolution, Volume 16, Issue 5, May 2026.
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

Spatial Distribution and Conservation Prioritization of Medicinal Gymnosperms in China Using an Optimal Set‐Cover Approach

open access: yesEcology and Evolution, Volume 16, Issue 5, May 2026.
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

Discovery of Cyanobacteria Associated with Cycads and Description of Three Novel Species in Desmonostoc (Nostocaceae)

open access: yesDiversity, 2023
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

open access: yesCommunicative & Integrative Biology, 2011
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

New Insights Into the Distribution of Australian Butterflies (Lepidoptera: Papilionoidea) Provided by Citizen Science

open access: yesAustral Entomology, Volume 65, Issue 2, May 2026.
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

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