Results 41 to 50 of about 5,096 (214)

Genes Translocated into the Plastid Inverted Repeat Show Decelerated Substitution Rates and Elevated GC Content. [PDF]

open access: yes, 2016
Plant chloroplast genomes (plastomes) are characterized by an inverted repeat (IR) region and two larger single copy (SC) regions. Patterns of molecular evolution in the IR and SC regions differ, most notably by a reduced rate of nucleotide substitution ...
Kuo, Li-Yaung   +3 more
core   +1 more source

A quantitative comparison of dispersed spore/pollen and plant megafossil assemblages from a Middle Jurassic plant bed from Yorkshire, UK [PDF]

open access: yes, 2015
Detailed quantitative data has previously been collected from plant megafossil assemblages from a Middle Jurassic (Aalenian) plant bed from Hasty Bank, North Yorkshire, UK.
Bhowmik   +46 more
core   +3 more sources

Population size, habitat and conservation status of an Endangered species, Macrozamia johnsonii (Zamiaceae) [PDF]

open access: yes, 2013
Macrozamia johnsonii D. Jones & K. Hill is a locally endemic cycad (family Zamiaceae) with a restricted occurrence in north-eastern New South Wales and currently listed as Endangered.
Binns, Doug L., Meek, P.
core  

Pollinator diversity and host specificity in threatened Encephalartos cycads and their implications for co‐extinction and species recovery

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract The highly threatened African cycad genus Encephalartos faces severe threats such as habitat loss and poaching. In addition, the lack of sexual recruitment due to the absence of pollinators (pollinator collapse) has emerged as another major threat.
Paul D. Janse van Rensburg   +2 more
wiley   +1 more source

Population Structure of an African Cycad: Fire May Stimulate the Coning Phenology of Encephalartos lanatus (Zamiaceae) and Also Predispose Its Cones to Damage

open access: yesDiversity, 2023
Cycads are the most threatened group in the plant kingdom. Fire is identified as one of the major factors heightening cycad extinction risk. However, compared to South American cycads, we know little about how fire negatively affects the demography of ...
Memory N. Sigasa   +4 more
doaj   +1 more source

‘I like to dance with the flowers!’: Exploring the possibilities for biodiverse futures in an urban forest school

open access: yesChildren &Society, EarlyView.
Abstract This article explores the ways in which ‘forest school’, an educational approach where children engage in creative and play based activities in a ‘natural’ environment, can contribute towards Sustainable Development Goal 15 (SDG 15) by promoting sustainable use of terrestrial ecosystems and by helping address biodiversity loss. Drawing on data
Hannah Hogarth
wiley   +1 more source

Cycad Aulacaspis Scale, a Newly Introduced Insect Pest in Indonesia

open access: yesHayati Journal of Biosciences, 2012
Cycad aulacaspis scale (Aulacaspis yasumatsui Takagi (Hemiptera: Diaspididae)) is native to Thailand and Vietnam. Since the early 1990s it has been spreading around the world due to the trade in cycad plants for ornamental use.
NATALIA VON ELLENRIEDER   +4 more
doaj   +3 more sources

Genome-Wide Evidence for Complex Hybridization and Demographic History in a Group of Cycas From China

open access: yesFrontiers in Genetics, 2021
Cycads represent one of the most ancestral living seed plants as well as one of the most threatened plant groups in the world. South China is a major center and potential origin of Cycas, the most rapidly diversified lineage of cycads.
Yueqi Tao   +8 more
doaj   +1 more source

Nathaniel Lord Britton (1859 - 1934) [PDF]

open access: yes, 2009
During his directorship of thirty-three years-a short space of time as the world goes-Doctor Britton had seen The New York Botanical Garden develop from little more than an idea to a well-developed tract of nearly 400 acres, with handsome buildings, an ...
Howe, Marshall Avery
core  

Differences in characteristics between naturalized threatened plants and other threatened plants

open access: yesConservation Biology, EarlyView.
Abstract Many non‐native plant species introduced by humans have become naturalized. At the same time many species are threatened in their native range. However, the number of plant species threatened in their native range that are naturalized elsewhere remains unknown.
Weihan Zhao   +10 more
wiley   +1 more source

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