Results 101 to 110 of about 2,947 (235)

Grass assemblages and diversity of conservation areas on the coastal plain south of Maputo Bay, Mozambique

open access: yesBothalia: African Biodiversity & Conservation, 2004
A floristic analysis of the grass species assemblages of the Licuati Forest and Maputo Elephant Reserves south of Maputo Bay, Mozambique, is presented. Sampling of grass data was undertaken in six previously described, major vegetation types.
S. J. Siebert   +3 more
doaj   +1 more source

Notulae to the Italian alien vascular flora: 2 [PDF]

open access: yes, 2016
In this contribution, new data concerning the Italian distribution of alien vascular flora are presented. It includes new records, exclusions and confirmations for Italy or for Italian administrative regions for taxa in the genera Ageratum, Aster ...
ARDENGHI, N. M. G.   +27 more
core   +2 more sources

Poaceae em uma planície de inundação no Brasil: listagem florística e novas ocorrências

open access: yesHoehnea
RESUMO O presente estudo objetiva caracterizar as Poaceae da Planície de Inundação do Alto Rio Paraná (PIAP) e seu entorno, localizada a 22º38'-22º57'S e 53º05'-53º36'O, entre os Estados do Paraná e Mato Grosso do Sul.
Kazue Kawakita   +2 more
doaj   +1 more source

The Kranz syndrome in the Eragrostideae (Chloridoideae, Poaceae) as indicated by carbon isotopic ratios*

open access: yesBothalia: African Biodiversity & Conservation, 1984
13C/12C ratios are generally regarded as being very reliable indicators of C3 or C4 photosynthesis. These relative carbon isotope ratios are expressed as a negative δ 3C and fall into two distinct groups: Kranz (or C4) plants with δ between -9°/00 no and
Hector O. Panarello, Evangelina Sanchez
doaj   +1 more source

Subtribal classification of the New World Eragrostideae (Poaceae: Chloridoideae)

open access: yesSIDA, contributions to botany, 1995
A subtribal classification system for 38 genera of Eragrostideae that occur in the New World is presented.
Paul M. Peterson   +2 more
openaire   +1 more source

Molecular Dating, Evolutionary Rates, and the Age of the Grasses [PDF]

open access: yes, 2017
Many questions in evolutionary biology require an estimate of divergence times but, for groups with a sparse fossil record, such estimates rely heavily on molecular dating methods.
Christin, Pascal-Antoine   +5 more
core  

EL COMPLEJO SPOROBOLUS INDICUS (POACEAE, CHLORIDOIDEAE, ZOYSIEAE) EN LA ARGENTINA

open access: yesDarwiniana, 2011
Se analiza el complejo de especies relacionadas a Sporobolus indicus para la Argentina. Se reconocen las variedades S. indicus var. indicus y S. indicus var.
Silvia S. Denham, Sandra S. Aliscioni
doaj  

Asignación sistemática y paleocomunidades inferidas a partir del estudio fitolítico de sedimentos cuaternarios de Entre Ríos, Argentina [PDF]

open access: yes, 2010
El análisis de los fitolitos es una de las disciplinas paleobotánicas utilizadas para la reconstrucción de ecosistemas pasados ya que proporcionan un registro preciso de una parte de la vegetación, en áreas concretas y en un momento determinado ...
Erra, Georgina
core  

Silicofitolitos : aplicaciones para la reconstrucción de los sistemas de subsistencia prehistóricos [PDF]

open access: yes, 2005
En Uruguay, el análisis de silicofitolitos comienza a implementarse en la década de 1990 como una técnica alternativa para el abordaje del registro arqueobotánico, hasta entonces poco explorado dada la mala preservación de restos orgánicos. El desarrollo
Del Puerto, Laura, Inda, Hugo
core  

Culm anatomy of Bouteloua and relatives (Gramineae: Chloridoideae: Boutelouinae)

open access: yesActa Botanica Mexicana, 2007
Se analizaron cortes transversales de la región media del tallo de 55 taxa de Boutelouinae, con el fin de explorar la utilidad de sus caracteres en el conocimiento de las relaciones filogenéticas del grupo.
Ma. Elena Siqueiros-Delgado
doaj  

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