Results 51 to 60 of about 2,438 (177)

A new conifer record from the late Aptian of La Paja Formation from Veléz, Santander (Colombia)

Acta Palaeobotanica
A new plant assemblage from the La Paja Formation at the Los Guayabos section of Vélez, Santander (Central Colombia) is described here. Based on ammonite biostratigraphy, the age of the flora is estimated as late Aptian.
Hector Daniel Palma-Castro, Cristian David Benavides-Cabra, Fabiany Herrera   +2 more
doaj   +1 more source

Lines of dehiscence as a biomechanical strategy for controlling damage during blade development in the bull kelp Nereocystis luetkeana

Journal of Phycology, EarlyView.
Abstract Although tearing is most often considered mechanical damage, it plays a central role in blade development in the bull kelp Nereocystis luetkeana. Although developmental tearing has been described in other macrophytes, the presence of a line of dehiscence that directs fracture apart from reproduction or abscission remains rare and poorly ...
Alana Breitkreutz, Patrick T. Martone
wiley   +1 more source

Variación temporal de la productividad foliar de Thalassia Testudinum K. d. Koenig en una pradera del Rincón de Guanabo, Cuba/ Temporal variation of the productivity of Thalassia testudinum (K. D. Koenig) in a meadow of Rincon de Guanabo, Cuba

Revista de Investigaciones Marinas, 2019
Thalassia testudinum K. D. Koenig es la angiosperma marina dominante en la plataforma cubana, pero la variabilidad intra-anual de la producción foliar ha sido evaluada en pocos sitios.
Emma Elena Gómez González, Amanda Ramos-Romero, Roamsy Volta Rodríguez, Beatriz Martínez-Daranas   +3 more
doaj  

Revisiting the life cycle of Margalefidinium polykrikoides Group III

Journal of Phycology, EarlyView.
Abstract Dinoflagellates produce cysts as a strategy to withstand environmental stressors, with nutrient depletion generally considered a key trigger for cyst production. Resting cysts are thick‐walled, typically composed of one to several layers, and characterized by a prolonged dormancy period.
Eduardo Pérez‐Vega, Kenneth N. Mertens, Pjotr Meyvisch, Margaret R. Mulholland   +3 more
wiley   +1 more source

Caracterización del macrofitobentos de la Laguna Grande, Santa Fe, La Habana, Cuba/ Macrophytobenthos characterization of Laguna Grande, Santa Fe, La Habana, Cuba

Revista de Investigaciones Marinas, 2016
Las investigaciones referentes al estado del macrofitobentos son importantes por la vulnerabilidad actual de los ecosistemas marinos ante diversas presiones naturales y antrópicas.
Emma Elena Gómez González, Beatriz Martínez-Daranas   +1 more
doaj  

The consequences of partial clonality on the spatiotemporal genetic structure of the red alga Chondria tumulosa (Ceramiales, Rhodophyta)

Journal of Phycology, EarlyView.
Abstract The relative rates of sexual versus clonal reproduction partition genetic diversity, but the quantification of these rates remains limited in natural populations. This knowledge gap is particularly acute among tropical macroalgae. Chondria tumulosa is a red macroalga that has been documented at high abundance in the three northernmost atolls ...
Taylor M. Williams, Heather L. Spalding, Solenn Stoeckel, Brian B. Hauk, Jonathan Plissner, Randall K. Kosaki, Stacy A. Krueger‐Hadfield   +6 more
wiley   +1 more source

Salt-Tolerant ATPase Activity in the Plasma Membrane of the Marine Angiosperm Zostera marina L. [PDF]

Plant and Cell Physiology, 2002
Plasma membrane (PM) H(+)-ATPase and H(+) transport activity were detected in PM fractions prepared from Zostera marina (a seagrass), Vallisneria gigantea (a freshwater grass) and Oryza sativa (rice, a terrestrial plant). The properties of Z. marina PM H(+)-ATPase, specifically, the optimal pH for ATPase activity and the result of trypsin treatment ...
Yuki, Muramatsu, Akiko, Harada, Yoshinari, Ohwaki, Yoshiaki, Kasahara, Shingo, Takagi, Toshiyuki, Fukuhara   +5 more
openaire   +2 more sources

LOS PASTOS MARINOS DEL GOLFO DE GUANAHACABIBES, PINAR DEL RÍO, CUBA/ Seagrasses at Guanahacabibes, Pinar del Río, Cuba

Revista de Investigaciones Marinas, 2017
Para actualizar el conocimiento sobre el estado de los pastos marinos en el golfo de Guanahacabibes se realizaron muestreos en 24 estaciones. Los muestreos se hicieron con un marco de 25 x 25 cm que se lanzó al azar 12 veces en transectos de 30 m.
Eduardo Gabriel Torres Conde, Beatriz Martínez-Daranas   +1 more
doaj  

Chloroplast genomic comparison provides insights into the evolution of seagrasses

BMC Plant Biology, 2023
Background Seagrasses are a polyphyletic group of monocotyledonous angiosperms that have evolved to live entirely submerged in marine waters. Thus, these species are ideal for studying plant adaptation to marine environments.
Jun Chen, Yu Zang, Shuai Shang, Zhibo Yang, Shuo Liang, Song Xue, Ying Wang, Xuexi Tang   +7 more
doaj   +1 more source

Genetic, phenotypic, and ecological differentiation indicate a new cryptic and threatened species in the orchid genus Epidendrum from Alcatrazes Island, southeastern Brazil

Journal of Systematics and Evolution, EarlyView.
Epidendrum insularis occurs on the remote Alcatrazes Island in the southeastern Brazilian coast. The description of this new cryptic species was only possible by the joint use of molecular markers, reproductive experiments, flower morphometry, functional traits, and community analysis.
Beatriz L. Arida, Giovana N. Trotta, Beatriz C. De Marco, Iris D. P. Ribeiro, Raphael da Silva, Thales M. de Lima, Welington L. Sachetti Junior, Vitor de A. Kamimura, Gabriel P. Sabino, Bárbara S. S. Leal, Lívia Garcia, Edlley M. Pessoa, Fabio Pinheiro   +12 more
wiley   +1 more source