Results 51 to 60 of about 1,946 (173)

The Role of the European Union in Managing African Crises Between Development Aid and Geopolitical Interests

open access: yesWorld Affairs, Volume 189, Issue 1, Spring 2026.
ABSTRACT This study conducts a comprehensive and critical examination of the interplay between development assistance and strategic geopolitical objectives in the European Union's (EU) engagement with African crises. Although the EU positions itself as a normative power committed to advancing peace, development, and human rights, its practices often ...
Edmond Chick   +1 more
wiley   +1 more source

Sistema de plantio direto de cebola: contribuições das plantas de cobertura no manejo ecológico de plantas espontâneas [PDF]

open access: yes, 2011
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Agrárias, Programa de Pós-Graduação em Agroecossistemas, Florianópolis, 2011O Brasil apresenta grandes areas agricolas sob sistema de plantio direto (SPD) e em expansao ...
Vilanova, Cintia de Camargo
core  

Comportamento no solo dos herbicidas diuron, hexazinone e sulfometuron- methyl aplicados isoladamente e em mistura

open access: yes, 2020
The current agricultural management system has increased the use of herbicide and pesticide combinations, as this increases efficiency and broadens the spectrum of weed control, with formulated mixtures frequently used in sugarcane fields.
Medeiros , Rita de Cassia Araújo de
core   +1 more source

Identifying priority areas for conservation to promote connectivity and mitigate the impacts of anthropogenic disturbance

open access: yesConservation Biology, Volume 39, Issue 6, December 2025.
Abstract As nations seek to expand protected area (PA) networks to cover 30% of land and seas by 2030 (30×30), there is an urgent need for systematic conservation planning and spatial prioritization that considers the broad range of ecological and socioeconomic factors influencing the persistence of biodiversity.
Edmond Sacre   +2 more
wiley   +1 more source

Dinâmica biológica do fósforo em dois solos sob culturas de cobertura com espécies micorrízicas e não micorrízicas [PDF]

open access: yes, 2003
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Agrárias. Programa de Pós-Graduação em Agroecossistemas.Os estudos sobre os fenômenos relacionados à velocidade de mobilização do fósforo no solo concentram-se em ...
Dalla Costa, Murilo
core  

Cultivo de beterraba em sistema de plantio direto de hortaliças [PDF]

open access: yes, 2014
TCC (graduação) - Universidade Federal de Santa Catarina. Centro de Ciências Agrárias. Curso de Agronomia.O estágio de conclusão de curso foi realizado na Estação Experimental de Ituporanga (EEItu) da Empresa de Pesquisa e Extensão de Santa Catarina ...
Costa, Maíra Elena Borges
core  

Injúria potencial de herbicidas de solo ao girassol: IV - rendimento de aquênios e componentes do rendimento Potential sunflower injury by soil applied herbicides: IV - Achene yield and yield components

open access: yesPlanta Daninha, 1994
Conduziu-se um ensaio em campo na Estação Experimental Agronômica da Universidade Federal do Rio Grande do Sul, em Eldorado do Sul, RS, em 1989/90. O objetivo foi determinar o efeito dos herbicidas clomazone, chlorimuronethyl, imazaquin e imazethaphyr ...
Ribas A. Vidal, Nilson G. Flecks
doaj   +1 more source

Identifying potentially suitable and accessible refugia to mitigate impacts of an emerging disease on a rare tree

open access: yesConservation Biology, Volume 39, Issue 6, December 2025.
Abstract Identifying refugia from emerging threats is vital to ensure the persistence of rare and threatened species, but modeling habitat distribution for these species is challenging and the role of people in refuge management is rarely considered. Myrtle rust is an emerging infectious disease that represents a grave threat to the rare wetland tree ...
Sarah M. Herbert   +7 more
wiley   +1 more source

Injúria potencial de herbicidas de solo ao girassol: II - chlorimuron-ethyl Potential suflower injury by soil applied herbicides: II - chlorimuron-ethyl

open access: yesPlanta Daninha, 1993
Conduziu-se um ensaio de campo na Estação Experimental Agronômica da Universidade Federal do Rio Grande do Sul, em Eldorado do Sul, RS em 1989/90. O objetivo do trabalho foi determinar o efeito residual potencial do herbicida chlorimuron-ethyl aplicado ...
Nilson G. Fleck, Ribas A. Vidal
doaj   +1 more source

Role of protected areas in mitigating range loss and local extinctions of terrestrial mammals

open access: yesConservation Biology, Volume 39, Issue 6, December 2025.
Abstract Protected areas (PAs) are a major tool in biodiversity conservation, but the extent to which they mitigate species declines is often unclear. We evaluated the effectiveness of PAs in mitigating range contraction and local extinction for 483 terrestrial mammal species.
Andrea Cristiano   +5 more
wiley   +1 more source

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