Results 101 to 110 of about 1,956 (213)

Identificación de bulbos de las formas Common y Cornwall y de sus bulbos apicales y laterales de Oxalis latifolia kunth. [PDF]

open access: yes, 2003
Se describen los caracteres morfológicos y cromáticos que permiten distinguir las dos formas de Oxalis latifolia, common y cornwall, así como los tipos de bulbos que aparecen en las poblaciones naturales de los campos de ...
Lopez, M.L. (María Luisa)   +1 more
core  

Scientists can be free, but only once they are tenured [PDF]

open access: yes, 2015
The frenzy for evaluation metrics recognizes the value of research based on the impact factor of the journals that publish the results. Only some areas of science are conducive to publication in the best tribunes.
Boero, F
core   +1 more source

Autoecologia das espécies florestais em regime de plantio de enriquecimento em linha na floresta primária da Amazônia Central Autoecology of forest species in line plannting enrichment system in primary forest in Central Amazonia

open access: yesActa Amazonica, 2006
A autoecologia das três espécies florestais em linhas de enriquecimento foi avaliada junto com o monitoramento do microclima e fertilidade do solo na floresta primária de terra-firme da Amazônia brasileira.
Akira Tanaka, Gil Vieira
doaj   +1 more source

Living benthic foraminifera from cold-water coral ecosystems in the eastern Alboran Sea, Western Mediterranean. [PDF]

open access: yesHeliyon, 2021
Stalder C   +5 more
europepmc   +1 more source

Distribution and autoecology off Prunus lusitanica L. in Iberian Peninsula.

open access: yesForest Systems, 2006
In the present work the distribution, the physical medium, and the vegetal groups of this species (which presents an outstanding botanical interest) on the Iberian Peninsula, have been studied. A survey was carried out, and 133 locations of the species in the Iberian Peninsula have been described, of which 25 were discovered during the field work. This
openaire   +4 more sources

Defining a new autoecological trait matrix for French stream benthic diatoms

open access: yesEcological Indicators, 2019
Abstract Autoecological traits of aquatic organisms are well known to provide crucial information on hydrosystems and are good complements to biotic indices for evaluating surface water ecological quality. In France, as in many other European countries, autoecological approaches concerning diatoms are based on a checklist developed in the Netherlands.
Carayon, D.   +2 more
openaire   +2 more sources

Evolução da vegetação de um campo natural (excluído e pastejado) e auto-ecologia de plantas indesejáveis. [PDF]

open access: yes, 2014
A dinâmica da vegaetação campestre, assim como a auto-ecologia de cinco espécies indesejáveis (Eupatorium buniifolium - "chirca", Erianthus angustifolius - "macega", Baccharis coridifolia - "mio-mio", B.
GIRARDI-DEIRO, A. M.   +2 more
core  

Invisible floral larcenies: microbial communities degrade floral nectar of bumble bee-pollinated plants [PDF]

open access: yes, 1998
8 páginas, 4 figuras, 1 láminaThe ecology of nectarivorous microbial communities remains virtually unknown, which precludes elucidating whether these organisms play some role in plant–pollinator mutualisms beyond minor commensalism.
García, Isabel M.   +2 more
core   +1 more source

Evaluation and Planning Control of the Ecosystem Fragmentation Due to Urban Development [PDF]

open access: yes, 2003
Different kinds of urban sprawl on the territory cause the ecosystems fragmentation phenomena which the planning tools often are not able to control.
Biondi, Maurizio   +4 more
core  

Biodiversity of ecosystems in an arid setting: The late Albian plant communities and associated biota from eastern Iberia. [PDF]

open access: yesPLoS One, 2023
Barrón E   +6 more
europepmc   +1 more source

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