Results 101 to 110 of about 4,482 (197)
Application of palynological techniques for correlation of coal seams in the Lower Lignite Creek area, Nenana Coal Field [PDF]
This study concerns spores and pollen in the coals of the lower Lignite Creek area in the Nenana Coal Field, which is operated by Usibelli Mining Company.
McFarlane, R., Sanders, R., and Rao, P.D.
core
Biljke mesožderke su izuzeci u biljnom svijetu. Imaju biljne organe i životni ciklus kao i svaka druga vrsta. Imaju listove, cvijetove i klorofil koji im daje zelenu boju.
Jelačić, Tihana
core +2 more sources
El autor considera la familia Clethraceae en su conjunto, dando la distribución geográfica en América del Sur. Se agregan claves y descripciones para las especies argentinas y se describe una nueva especie, Clethra maromensis, de la provincia de Salta.
M. Villa Carenzo
doaj
Elaiophores: their taxonomic distribution, morphology and functions
Elaiophores are floral glands that secrete non-volatile oils as a reward for their pollinators. Their secretions mediate a specialized interaction between oil-producing plants and a few species of oil-collecting bees - Apidae and Melittidae.
Clivia Carolina Fiorilo Possobom +1 more
doaj +1 more source
Holocene Vegetation, Climate, and Carbon History on Western Kodiak Island, Alaska [PDF]
At Phalarope Pond, western Kodiak Island, a multidisciplinary study using pollen and spores, macrofossils, stable isotopes, and carbon accumulation provides the Holocene vegetation and climate history following the deglaciation that began over 16,000 cal
Mann, Daniel H. +2 more
core +1 more source
Adaptations of succulent plants for survival in desert ecosystems [PDF]
Cilj ovog seminara bio je nabrojati prilagodbe sukulentnih biljaka koje su im nužne za preživljavanje u pustinjskim ekosustavima. Sukulenti su biljke koje imaju posebne morfološke i ekofiziološke prilagodbe za pojačano primanje i pohranu vode.
Penzar, Marta
core +2 more sources
Responses of generalist invertebrate predators to pupal densities of autumnal and winter moths under field conditions [PDF]
1. Generalist natural enemies are usually not considered as being capable of causing population cycles in forest insects, but they may influence the population dynamics of their prey in the low density cycle phase when specialist enemies are largely ...
Ammunét, Tea +3 more
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Pouteria (Sapotaceae) na Estação Biológica de Santa Lúcia, ES, Brasil
Resumo Sapotaceae (Ericales) é uma família pantropical com 58 gêneros e cerca de 1.250 espécies sendo Pouteria o gênero mais rico com aproximadamente 200 espécies. No Brasil são registradas 124 espécies, das quais 52 são endêmicas.
Arnaldo Zanetti Mônico +1 more
doaj +1 more source
La formation d'Herzeele: un nouveau stratotype du pleistocene moyen marin de la mer du Nord [PDF]
The Herzeele Brickyard (Northern France) offers a permanently well exposed outcrop of continental and marine deposits which are reaching a total thickness of 6 m and are overlying the Ypresian clay of eocene age, occuring at about 8 m N.G.F.Three marine ...
Baeteman, C. +11 more
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Una nueva especie de Souroubea (Marcgraviaceae, Ericales) de Colombia
Se describe e ilustra una nueva especie de Souroubea Aubl. de Colombia, la cual se reconoce fácilmente por sus nectarios reproductivos pedicelares blancos y por sus glándulas laminales conspicuas en ambas caras de las hojas. La nueva especie se conoce únicamente en una pequeña área andina de la vertiente amazónica del departamento de Caquetá.
Diego Giraldo-Cañas +2 more
openaire +1 more source

