Results 91 to 100 of about 4,733 (201)

New species and records of Anacis (Hymenoptera: Ichneumonidae: Cryptini) from tropical and temperate Andean South America [PDF]

open access: yes, 2003
Descriptions are given of the new species Anacis ignifera and A. flammigera from Mérida State, Venezuela and of A. umbrifera from Machu Picchu, Perú. These belong to a tropical Andean lineage with strongly projecting propodeal cristae and pictured wings.
Porter, Charles C.
core   +1 more source

Does Size Matter? Atmospheric CO2 May Be a Stronger Driver of Stomatal Closing Rate Than Stomatal Size in Taxa That Diversified under Low CO2 [PDF]

open access: yes, 2016
One strategy for plants to optimize stomatal function is to open and close their stomata quickly in response to environmental signals. It is generally assumed that small stomata can alter aperture faster than large stomata.
Aasamaa   +63 more
core   +4 more sources

Status of Agathis flavescens (Araucariaceae) in Peninsular Malaysia [PDF]

open access: yesBlumea - Biodiversity, Evolution and Biogeography of Plants, 2007
The narrowly endemic species Agathis flavescens Ridl., known only from altitudes between 1100 and 2100 m on Gunung Tahan and Gunung Rabong, Peninsular Malaysia, is reinstated as a distinct species.
openaire   +2 more sources

Branch whorls of juvenile Araucaria araucana (Molina) Koch: are they formed annually? Los verticilos de juveniles de Araucaria araucana (Molina) Koch: ¿son formados anualmente?

open access: yesRevista Chilena de Historia Natural, 2000
The growth of Araucaria araucana, like that of many other conifers, is characterised by the production of a monopodial stem with branch whorls. However, the periodicity of whorl formation in this species has not been subjected to systematic study.
CHRISTOPHER H. LUSK, CARLOS LE-QUESNE
doaj  

Individual carbon estimation for Araucaria angustifolia

open access: yesPesquisa Agropecuária Tropical, 2014
Forests are important carbon sinks that contribute to climate change mitigation. Quantifying the carbon stock is critical for measuring such mitigation potential. Araucaria angustifolia (Bert.) O. Ktze.
Carlos Roberto Sanquetta   +4 more
doaj   +1 more source

Caracterização da diversidade genética de uma população de Araucária angustifolia (BERT.) O. Kuntze. [PDF]

open access: yes, 2011
TCC (graduação) - Universidade Federal de Santa Catarina, Centro de Ciências Agrárias, Curso de Agronomia.A espécie Araucaria angustifolia (Bert.) O. Kuntze, o Pinheiro brasileiro, é a principal espécie da FOM.
Duarte, Roberta Inácia
core  

On Araucarites rogersii Seward from the Lower Cretaceous Kirkwood Formation of the Algoa Basin, Cape Province, South Africa [PDF]

open access: yes, 1977
Main articleAraucarites rogersii Seward from the Kirkwood Formation (Lower Cretaceous) of South Africa, is redescribed based on new fossil material including a single compressed cone. Some additional observations on the flora and environment of the Early
Brown, J. T.
core  

Araucariaceae macrofossil record from South America and Antarctica

open access: yesAlcheringa: An Australasian Journal of Palaeontology, 2012
Araucariaceae fossils are abundant in Patagonia and on Seymour (Marambio) and King George (25 de Mayo) islands, Antarctica. Araucariacean macrofossil suites are represented by records of 121 woods, leaves, ovuliferous scales, cones, one seed and seedlings, many of them placed in 50 formalized morphospecies. Although Araucariaceae fossil pollen is known
Panti, Carolina   +3 more
openaire   +2 more sources

Nidificación del Chinchero Escamado (Lepidocolaptes falcinellus) [PDF]

open access: yes, 2011
We provide the first description of the nest of the Scalloped Woodcreeper (Lepidocolaptes falcinellus), its clutch size, nestlings, and nesting behavior from prospecting to fledging, based on 102 h of observation at a nest in the subtropical Atlantic ...
Bodrati, Alejandro   +1 more
core  

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