Results 31 to 40 of about 2,760,931 (354)

Efeito da fertilidade de terra preta de índio da Amazônia Central no estado nutricional e na produtividade do mamão hawaí (Carica papaya L.) Effect of amazonian dark earth fertility on nutritional status and fruit production of papaya(Carica papaya L.)in Central Amazonia

open access: yesActa Amazonica, 2006
Com o objetivo de avaliar o efeito da fertilidade de solos antropogênicos no estado nutricional e na produtividade do mamão Havaí (Carica papaya L.), conduziu-se o presente estudo em um plantio, localizado na Costa do Açutuba, Iranduba, AM, em Latossolo ...
Newton Paulo de Souza Falcão   +1 more
doaj   +1 more source

Tropical Species Classification with Structural Traits Using Handheld Laser Scanning Data

open access: yesRemote Sensing, 2022
Information about tree species plays a pivotal role in sustainable forest management. Light detection and ranging (LiDAR) technology has demonstrated its potential to obtain species information using the structural features of trees. Several studies have
Meilian Wang   +2 more
doaj   +1 more source

Quantifying Leaf Phenology of Individual Trees and Species in a Tropical Forest Using Unmanned Aerial Vehicle (UAV) Images

open access: yesRemote Sensing, 2019
Tropical forests exhibit complex but poorly understood patterns of leaf phenology. Understanding species- and individual-level phenological patterns in tropical forests requires datasets covering large numbers of trees, which can be provided by Unmanned ...
John Y. Park   +5 more
semanticscholar   +1 more source

Flood tolerance of four tropical tree species [PDF]

open access: yesTree Physiology, 1999
Many seasonally flooded habitats in the tropics are dominated by one or a few tree species. We tested the hypothesis that the inability to tolerate flooding restricts most species from becoming established in flood-prone habitats. We compared morphological and physiological responses to flooding in seedlings of Prioria copaifera Griseb., a species that
Omar R., Lopez, Thomas A., Kursar
openaire   +2 more sources

MULTIPLICAÇÃO IN VITRO DE Swietenia macrophylla KING (MELIACEAE) A PARTIR DE MATERIAL JUVENIL

open access: yesCiência Florestal, 2010
Big-leaf mahogany (Swietenia macrophylla King) is an important species for timber production that is considered the most valuable in the world. For this reason its exploitation is indiscriminate and leads this species to the risk of extinction. Moreover,
Eliane de Souza Schottz   +5 more
doaj   +1 more source

Consistent patterns of common species across tropical tree communities

open access: yesNature
Trees structure the Earth’s most biodiverse ecosystem, tropical forests. The vast number of tree species presents a formidable challenge to understanding these forests, including their response to environmental change, as very little is known about most ...
Declan L. M. Cooper   +352 more
semanticscholar   +1 more source

Genetic Variation in Tropical Meloidogyne Species

open access: yes, 1994
In tropical regions the parthenogenetic Meloidogyne spp. are major crop pests. The presence of populations in West Africa which overcome resistance in cultivars as diverse as tomato cv. ‘Rossol’, sweet potato cv. ‘CDH’ and soya bean cv. ‘Forrest’ has been reported (Prot, 1984; Fargette and Braaksma, 1990). The relationship of these populations to other
Fargette, Mireille   +3 more
openaire   +2 more sources

Characterization of Ganoderma pseudoferreum mitogenome revealed a remarkable evolution in genome size and composition of protein-coding genes

open access: yesFrontiers in Plant Science
Red root disease in rubber trees, caused by Ganoderma pseudoferreum, is a prevalent and severe soil-borne disease in rubber tree cultivation areas. The pathogen exhibits complex infections, with multiple transmission pathways, making the disease highly ...
Jinpeng Lu   +13 more
doaj   +1 more source

Effects of continuous light and light intensity on the growth performance and gonadal development of Nile tilapia

open access: yesRevista Brasileira de Zootecnia, 2021
Continuous illumination has been known to exert positive effects by stimulating growth and delaying unwanted maturation in seasonal-temperate farmed fish species like salmonids.
Carlos Cristian Martínez-Chávez   +3 more
doaj   +1 more source

Environmental Synergisms and Extinctions of Tropical Species [PDF]

open access: yesConservation Biology, 2009
Abstract:  Environmental synergisms may pose the greatest threat to tropical biodiversity. Using recently updated data sets from the International Union for Conservation of Nature (IUCN) Red List, we evaluated the incidence of perceived threats to all known mammal, bird, and amphibian species in tropical forests.
Laurance, William F., Useche, Diana C.
openaire   +3 more sources

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