Estimating the global conservation status of more than 15,000 Amazonian tree species

Estimates of extinction risk for Amazonian plant and animal species are rare and not often incorporated into land-use policy and conservation planning. We overlay spatial distribution models with historical and projected deforestation to show that at least 36% and up to 57% of all Amazonian tree species are likely to qualify as globally threatened under International Union for Conservation of Nature (IUCN) Red List criteria. If confirmed, these results would increase the number of threatened plant species on Earth by 22%. We show that the trends observed in Amazonia apply to trees throughout the tropics, and we predict thatmost of the world’s >40,000 tropical tree species now qualify as globally threatened. A gap analysis suggests that existing Amazonian protected areas and indigenous territories will protect viable populations of most threatened species if these areas suffer no further degradation, highlighting the key roles that protected areas, indigenous peoples, and improved governance can play in preventing large-scale extinctions in the tropics in this century

Avaliação do efeito da adubação fosfatada na distribuição do sistema radicular da ingá-de-macaco (Inga coreacea), ingá-mirim (Inga fogifolia) e ingá-de-metro (Inga edulis) cultivadas em aléias no estado do Acre.

O presente estudo objetiva avaliar o efeito da adubação fosfatada na distribuição do sistema radicular da ingá-de-macaco (Inga coreacea), ingá-mirim (Inga fogifolia) e ingá-de-metro (Inga edulis) cultivadas em aléias no estado do Acr

Acaricidal activity of cashew nut shell liquid associated with essential oils from Cordia verbenacea and Psidium guajava on Rhipicephalus microplus.

The aim of this study was to assess the effectiveness of cashew nut shell liquid (CNSL), Cordia verbenacea and Psidium guajava, both alone and in association against Rhipicephalus microplus. Larval packet and adult immersion tests were conducted in concentrations ranging from 3.1 at 100.0mg mL−1. CNSL was effective against engorged females (99.6%) at 100.0mg mL−1 and against larvae (99.2 %) at 50.0mg mL−1. The highest efficacy on engorged females was achieved by the essential oils of P. guajava at 12.5mg mL−1 (99.9%), followed by those of C. verbenacea at 25.0mg mL−1 (96.9%), while a low larvicidal activity of 5.8 and 59.0% was, respectively, obtained. The association at 50.0mg mL−1 had asignificant effect on both life stages of R. microplus. This association caused considerable larval mortality (95.3%) and high efficacy on engorged females (93.9%). © 2019, © 2019 Informa UK Limited, trading as Taylor & Francis Group

Distribuição dos sistemas radiculares de ingá-de-macaco (Inga coreacea), Ingá-mirim (Inga fagifolia) e Ingá-de-metro (Inga edulis), cultivados em aléias sobre um argissolo amarelo plíntico no estado do Acre.

O Objetivo deste trabalho foi estudar a distribuição do sistema radicular de ingá-de-macaco (Inga coreacea), Ingá-mirim (Inga fagifolia) e Ingá-de-metro (Inga edulis), cultivados em aléias sobre um Argissolo Amarelo plíntico