Results 131 to 140 of about 129,063 (307)

Polyesterase activity and thermostability of carboxylesterases from Thermoleophilum album YS‐3

open access: yesThe FEBS Journal, EarlyView.
Three novel α/β‐hydrolases from thermophilic bacterium Thermoleophilum album display carboxylesterase and polyesterase activity. These enzymes hydrolyse PET, PLA and PCL both at high and moderate temperatures. TA21 shows superior activity, efficiently converting MHET to terephthalic acid. Structural features underlying substrate binding highlight their
Tatyana N. Chernikova   +6 more
wiley   +1 more source

Fire risk and smallholders in the Brazilian Amazon: why have institutional arrangements failed so far? [PDF]

open access: yes, 2013
In the Brazilian Amazon, uncontrolled fire is one of the main drivers of forest degradation leading to important loss of biodiversity and ecosystem services (ES). Smallholders are often considered as the main actors responsible for these damages, as they
Bommel, Pierre   +5 more
core  

Fine‐scale patterns of genetic structure in three species of forest birds reveal dynamic Pleistocene history within an Amazonian interfluve

open access: yesIbis, EarlyView.
Phylogeographical studies of Amazonian birds have revealed large intraspecific diversity, even within recognized areas of endemism. To understand the origin and organization of Amazonian diversity, including the influence of current and historical landscapes, we need to evaluate fine‐scale patterns of genetic diversity in relation to detailed ...
Affonso Henrique Nascimento de Souza   +4 more
wiley   +1 more source

New freshwater sponges from Amazonian waters

open access: yes, 1983
Four species of freshwater sponges have their first register of occurrence for Amazonian waters upon specimens collected from Culuene and Sete de Setembro Rivers (Xingú basin), Tapirapés River (Araguaia basin) and Cuieiras River.
Becker Maciel, S., Volkmer-Ribeiro, C.
core  

Taxonomic, phylogenetic and functional diversity patterns of Saturniidae moth communities along a tropical forest recovery gradient in Ecuador

open access: yesInsect Conservation and Diversity, EarlyView.
Diverse Saturniidae moth communities are found in naturally recovering tropical forests in Ecuador. Community composition showed a gradual turnover with strongest differences between old‐growth forest and active agriculture, but only weak differences in taxonomic, phylogenetic and functional diversity. While our results suggest that Saturniidae are not
Sebastian Seibold   +15 more
wiley   +1 more source

Amazonian drying [PDF]

open access: yesNature Climate Change, 2018
openaire   +1 more source

Distribution models of polysphinctine parasitoid wasps (Hymenoptera: Ichneumonidae) reveal sampling bias and flag potentially overlooked host interactions

open access: yesInsect Conservation and Diversity, EarlyView.
We quantified the geographical overlap between parasitoid wasps and their known host spiders. We could assess which parasitoid species have more limited information about their interactions and are subject to geographical survey bias. We generated sampling bias maps to assist other researchers in identifying where the main sampling gaps are.
Gabriel M. Xavier   +3 more
wiley   +1 more source

Nutritional quality and calorific value of Amazonian forest litter

open access: yes, 1974
A study on the nutritional quality of litter from an Amazon terra firme forest was carried out to supplement quantitative data on litter production previously published by KLINGE and RODRIGUES (1968).
Howard-Williams, C.
core  

Politicisation and Agricultural (Post‐)Exceptionalism in EU–Mercosur Association Agreement Negotiations

open access: yesJCMS: Journal of Common Market Studies, EarlyView.
Abstract This article examines how the politicisation of EU trade policy – defined by heightened public salience, stakeholder polarisation and contestation – reshapes agricultural lobbying strategies, with a particular focus on the EU–Mercosur Association Agreement.
Emilio Del Pupo
wiley   +1 more source

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