Results 61 to 70 of about 2,040 (179)

Most young leaves pale in comparison to mature leaves: delayed greening is neither binary nor tropical

Ecography, Volume 2025, Issue 9, September 2025.
Delayed greening, the phenomenon in which expanding leaves appear red, blue or pale green due to low chlorophyll content, has long intrigued ecologists. However, little is known about what type of species are most likely to delay greening or which environmental conditions are associated with delayed greening.
Giancarlo M. Chiarenza, Angela T. Moles
wiley   +1 more source

Species delimitation of the Cycas segmentifida complex (Cycadaceae) resolved by phylogenetic and distance analyses of molecular data

Frontiers in Plant Science, 2016
The Cycas segmentifida complex consists of eight species whose distributions overlap in a narrow region in Southwest China. These eight taxa are also morphologically similar and are difficult to be distinguished.
Xiuyan eFeng, Xiuyan eFeng, Jian eLiu, Jian eLiu, Xun eGong   +4 more
doaj   +1 more source

Distribution and DNA profiling of Cycas beddomei Dyer. : A critical endangered gymnosperm.

Agricultura, 2014
Cycas beddomei is a   critically endangered  plant species belonging to the cycadales of the  gymnosperm under family Cycadaceae grown in the hill slopes and grassy woodland forest.  It is considered as a living fossil, as its distribution is very ...
Gyana Ranjan Rout
doaj   +1 more source

Consensus classifications are crucial for conservation: How CITES utilizes checklists

TAXON, Volume 74, Issue 4, Page 759-767, August 2025.
Abstract The Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) is an end‐user of the consensus classifications and checklists produced by global initiatives such as the World Flora Online (WFO). This paper provides a brief background on CITES and the impact of classification and nomenclature changes on the CITES ...
Ronell R. Klopper
wiley   +1 more source

Biotic Threats to Cycas micronesica Continue to Expand to Complicate Conservation Decisions

Insects, 2020
Invasions of non-native species can threaten native biodiversity, and island ecosystems are ideal for studying these phenomena. In this article, first, we report on the invasive species that combine to threaten the island cycad Cycas micronesica by ...
Benjamin E. Deloso, L. Irene Terry, Lee S. Yudin, Thomas E. Marler   +3 more
doaj   +1 more source

The value of research to selling the conservation of threatened species: the case of Cycas micronesica (Cycadopsida: Cycadales: Cycadaceae)

Journal of Threatened Taxa, 2014
A case study is described wherein strong focus on research during the developing threats that caused the elevation of Cycas micronesica from Near Threatened to Endangered status illustrates how targeted research results may be used to aid in conservation
Thomas E. Marler, Anders J. Lindström
doaj   +1 more source

Biological invasion by the cycad‐specific scale pest Aulacaspis yasumatsui (Diaspididae) into Cycas revoluta (Cycadaceae) populations on Amami‐Oshima and Okinawa‐jima, Japan

Plant Species Biology, Volume 40, Issue 4, Page 280-291, July 2025.
This article details the invasion of cycad aulacaspis scale into the islands of Okinawa‐Jima and Amami‐Oshima. Several recommendations are proposed in this article by members of the IUCN cycad specialist group and experts in the biological control of this scale insect.
Benjamin E. Deloso, José Said Gutiérrez‐Ortega, Jui‐Tse Chang, Yasuko Ito‐Inaba, Anders J. Lindström, L. Irene Terry, John Donaldson, William Tang, Ronald D. Cave, Jorge Antonio Gómez‐Díaz, Vanessa M. Handley, M. Patrick Griffith, Thomas E. Marler   +12 more
wiley   +1 more source

ISSR Variation in the Endemic and Endangered Plant Cycas guizhouensis (Cycadaceae) [PDF]

Annals of Botany, 2004
Cycas guizhouensis (Cycadaceae) is a rare and endangered species endemic to the southwest of China. An investigation was undertaken into the genetic variation of wild populations.ISSR markers were used to determine the genetic variation within and between 12 extant populations of this species.Low genetic diversity (at population level, P = 14.21 %, H(E)
Long-qian, Xiao, Xue-jun, Ge, Xun, Gong, Gang, Hao, Si-xiang, Zheng   +4 more
openaire   +2 more sources

An Updated DNA Barcoding Tool for Aloe Vera and Related CITES‐Regulated Species

Conservation Letters, Volume 18, Issue 4, July/August 2025.
ABSTRACT DNA barcoding has revolutionized the identification of illegally traded material of endangered species as it overcomes the lack of resolution encountered with morphological identification. Nonetheless, in recently evolved and highly diverse clades, such as the relatives of Aloe vera, the lack of interspecific sequence variation in standardized
Yannick Woudstra, Paul Rees, Solofo E. Rakotoarisoa, Nina Rønsted, Caroline Howard, Olwen M. Grace   +5 more
wiley   +1 more source

Scale insects (Hemiptera: Coccoidea) of ornamental plants from Sao Carlos, Sao Paulo, Brazil [PDF]

, 2001
A list of 35 scale insects collected from 72 ornamental plant species in Sao Carlos, Sao Paulo, Brazil is provided. Regarding host specificity, 30 scale insects were polyphagous, 4 oligophagous, and 1 monophagous.
Miller, D. R., Peronti, A. L. B. G., Sousa-Silva, C. R.   +2 more
core   +1 more source