Results 11 to 20 of about 152,702 (224)

Hyperdominant Trees Reveal Savanna Vulnerability Under Climate Change. [PDF]

Glob Chang Biol
The Brazilian Cerrado's forest structure relies disproportionately on just 30 hyperdominant tree species, which represent 50% of all individuals despite accounting for only 2% of species richness. This study evaluates their vulnerability under climate change scenarios for 2100.
Alvarez F, Marimon-Junior BH, Marimon BS, da Cruz WJA, Júnior NGR, Béu RG, da Conceição Bispo P, de Souza Medeiros A, Siqueira GM, Bueno ML, de Gois Aquino F, Guilherme FAG, Pinto JRR, Mews HA, Walter BMT, do Couto de Miranda S, Haidar RF, de Oliveira EL, Brandão RDF, Matricardi EAT, Munhoz CBR, de Souza Lima E, Carniello MA, da Cunha Bustamante MM, Morandi PS, de Oliveira EA, Finger Z, das Neves EC, Elias F, Menor IO, de Almeida Reis SM, Phillips O, Feldpausch TR.   +32 more
europepmc   +2 more sources

Mapping the density of giant trees in the Amazon. [PDF]

New Phytol
Summary Tall trees (height ≥ 60 m) are keystone elements of tropical forests, strongly influencing biodiversity, carbon storage, and ecosystem resilience. Yet, their density and spatial distribution remain poorly quantified, especially in remote Amazonian regions, limiting our understanding of their ecological roles and contribution to forest–climate ...
de Lima RB, da Silva DAS, Nunes MH, Bittencourt PRL, Groenendyk P, de Oliveira CP, Granato-Souza D, Caraciolo Ferreira RL, Aleixo da Silva JA, Aguirre-Gutiérrez J, Jackson T, de Matos Filho JR, Aparício PDS, da Silva JPG, de Toledo JJ, Guedes MC, de Almeida DRA, Higuchi N, Wagner FH, Ometto JP, Görgens EB.   +20 more
europepmc   +2 more sources

Satellite assessment of winter cover crop and conservation tillage outcomes to support adaptive management in working landscapes. [PDF]

J Environ Qual
Abstract The use of winter cover crops and conservation tillage are agricultural practices promoted to reduce nutrient and sediment loss from cropland, improve soil health, increase infiltration, and support farm nutrient cycling and ecosystem services. However, environmental performance of these practices is variable in the working farm landscape. The
Hively WD, Gao F, McCarty GW, Daughtry CST, Zhang X, Jennewein J, Thieme A, Lamb BT, Keppler J, Hapeman CJ, Cosh M, Mirsky SB.   +11 more
europepmc   +2 more sources

Complex and Dynamic Effects of an Extreme Low Temperature Weather Event on Invasive Plant Populations and Resident Communities. [PDF]

Glob Chang Biol
Invasive plant species might benefit more from climate change, though evidence for that is not clear. Here, we show that the effects of a low‐temperature extreme weather event can result in a dramatic reduction in both vegetative and reproductive growth of invasive populations of Gunnera tinctoria (giant rhubarb) in the west of Ireland.
Mantoani MC, Sweeney C, Osborne BA.
europepmc   +2 more sources

Effect of phenolic compounds and osmotic stress on the expression of penicillin biosynthetic genes from Penicillium chrysogenum var. halophenolicum strain

Journal of Xenobiotics, 2012
Phenol and phenolic compounds are aromatic pollutants that inhibit biological treatment of wastewaters. Penicillium chrysogenum var. halophenolicum is a halotolerant fungus that previously showed the ability to degrade phenol and resorcinol in high ...
Sumaya Ferreira Guedes, Ana Lúcia Leitão   +1 more
doaj   +1 more source

When resilience is not enough: 2022 extreme marine heatwave threatens climatic refugia for a habitat-forming Mediterranean octocoral. [PDF]

J Anim Ecol
We are convinced that this paper can contribute to a better comprehension of the impact of climate change on marine ecosystems. We describe how Marine Heat Waves, which have been increasing in frequency, extent and intensity during the last decades, can negatively affect habitat‐forming species over time. Abstract Climate change is impacting ecosystems
Rovira G, Capdevila P, Zentner Y, Margarit N, Ortega J, Casals D, Figuerola-Ferrando L, Aspillaga E, Medrano A, Pagès-Escolà M, Hereu B, Garrabou J, Linares C.   +12 more
europepmc   +2 more sources

PRODUKSI BIODIESEL BERKEMURNIAN TINGGI DARI CRUDE PALM OIL (CPO) DENGAN TERTRAHIDROFURAN-FAST SINGLE-PHASE PROCESS

Reaktor, 2012
Reaksi transesterifikasi dalam proses pembuatan biodiesel merupakan reaksi yang lambat karena berlangsung dalam sistem dua fase. Permasalahan tersebut dapat diatasi dengan penambahan co-solvent yang tidak reaktif.
O. Rachmaniah, A. Baidawi, I. Latif
doaj   +1 more source

KARAKTERISTIK DAN AKTIVITAS ANTIBAKTERI ASAP CAIR DARI BIOMASSA KAYU PUTIH (MELALEUCA LEUCADENDRA) DAN KAYU JATI (TECTONA GRANDIS)

Jurnal Teknologi Pertanian, 2020
Penelitian ini bertujuan untuk mengetahui karakteristik serta aktivitas antibakteri asap cair yang berasal dari biomassa kayu putih (Melaleuca leucadendra) dan kayu jati (Tectona grandis).
Ria Suryani, Wahyu Anggo Rizal, Diah Pratiwi, Dwi Joko Prasetyo   +3 more
doaj   +1 more source

Temporal and spatial variation of limnological variables and biomass of different macrophyte species in a Neotropical reservoir (São Paulo - Brazil) [PDF]

, 2013
Aim: This study reports an investigation of limnological characteristics and aquatic macrophyte occurrence in a neotropical reservoir in order to assess the spatio-temporal variation of water and sediment variables and their influence on plant ...
Bottino, Flávia, Calijuri, Maria do Carmo, Murphy, Kevin Joseph   +2 more
core   +2 more sources

FORMULASI PERSAMAAN ALLOMETRIK UNTUK PENDUGAAN BIOMASSA KARBON JATI ( Linn.F) DI JAWA BARATTectona grandis

Jurnal Penelitian Sosial dan Ekonomi Kehutanan, 2014
Penelitian ini dilaksanakan di Jawa Barat dan dengan menggunakan 32 pohon contoh destruktif diformulasikan persamaan allometrik yang dapat digunakan untuk estimasi biomassa karbon bagian atas, bagian bawah dan biomassa karbon total pada tegakan ...
Chairil Nawar Siregar
doaj   +1 more source