Results 11 to 20 of about 150,855 (204)

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

Drying suppresses fine root production to 1 m depths and alters root traits in four distinct tropical forests. [PDF]

New Phytol
Summary Drying and drought in tropical forests, which have some of the highest net primary productivity on Earth, are likely to alter root dynamics, ecosystem function, and carbon (C) storage. We used a chronic drying experiment in four lowland Panamanian forests to investigate whether soil drying shifts tropical forest root production from surface to ...
Cordeiro AL, Cusack DF, Dietterich LH, Valdes E, Gonçalves NB, Oliveira M, Quesada-Ávila G, Wright SJ.   +7 more
europepmc   +2 more sources

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

Influence of Buffer-Protected Sodium Butyrate Supplementation in the Diet of <i>Penaeus vannamei</i>. [PDF]

Aquac Nutr
This study aimed to determine the optimal inclusion level of protected sodium butyrate (PSB) in diets for Penaeus vannamei during the postlarvae to grow‐out phase. A completely randomized design was used with four dietary treatments: 0, 2, 4, and 8 kg/t of PSB (54% sodium butyrate). The PSB product (Novation SL 2002, Spain) contains 54% sodium butyrate
Oliveira MÉDS, Souza JT, Cunha AE, Silva VMF, Silva MAM, Varandas DN, Boas AV, Toledo AL, Schaan MA, Sánchez J, Saldaña B, de Oliveira MF, de Lima MR.   +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

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

PEMANFAATAN BIOMASSA KAYU SEBAGAI SUMBER ENERGI TERBARUKAN

Jurnal Riset Industri Hasil Hutan, 2010
Sejak lima tahun terakhir Indonesia mengalami penurunan produksi minyak nasional akibat menurunnya secara alamiah cadangan minyak pada sumur-sumur produksi.
Arhamsyah Arhamsyah
doaj   +1 more source