Results 111 to 120 of about 21,236 (213)

Flora y su funcionalidad en dos agroecosistemas de café (Coffea arabica L.) en Condega, Estelí, Nicaragua, 2016 [PDF]

open access: yes, 2017
Debido a los altos costos de manejo y contaminación en sistemas productivos convencional se da la necesidad de enfoques agroecológicos en la agricultura.
Castillo Corea, Brandon Rafael de Jesús   +1 more
core  

Populationsgenetische Differenzierung beim Eichenwickler (Tortrix viridana L.) und seiner Wirtspflanze (Quercus robur L.) anhand nukleärer Genmarker [PDF]

open access: yes, 2008
In Western Europe pedunculate oak (Quercus robur L.) is the forest tree with the highest number of phytophagous insect species (Yela & Lawton 1997). One of these, the green oak leaf roller Tortrix viridana L.
Schröder, Hilke
core  

Tropical component of the moss Flora of China [PDF]

open access: yes, 1990
In many ways, it is presumptuous for me to speak on the mosses of the tropical regions of China. Many consider the knowledge about the taxonomy, ecology, and geography of tropical bryophytes inadequate (Pócs 1982; Schuster 1983; Richards 1984), and this ...
Redfearn, Paul L.
core  

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

Fagaceae

open access: yesJournal of the Arnold Arboretum., 1944
openaire   +1 more source

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