Results 11 to 20 of about 10,008 (203)

Effects of land cover and protected areas on flying insect diversity. [PDF]

Conserv Biol
Abstract Widespread insect losses are a critical global problem. Mitigating this problem requires identifying the principal drivers across different taxa and determining which insects are covered by protected areas. However, doing so is hindered by missing information on most species owing to extremely high insect diversity and difficulties in ...
Sinclair JS, Buchner D, Gessner MO, Müller J, Pauls SU, Stoll S, Welti EAR, Bässler C, Buse J, Dziock F, Enss J, Hörren T, Künast R, Li Y, Marten A, Morkel C, Richter R, Seibold S, Sorg M, Twietmeyer S, Weis D, Weisser W, Wiggering B, Wilmking M, Zotz G, Frenzel M, Leese F, Haase P.   +27 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

Conservation benefits of a large marine protected area network that spans multiple ecosystems. [PDF]

Conserv Biol
Abstract Marine protected areas (MPAs) are widely implemented tools for long‐term ocean conservation and resource management. Assessments of MPA performance have largely focused on specific ecosystems individually and have rarely evaluated performance across multiple ecosystems either in an individual MPA or across an MPA network.
Smith JG, Lopazanski C, Free CM, Brun J, Anderson C, Carr MH, Claudet J, Dugan JE, Eurich JG, Francis TB, Gill DA, Hamilton SL, Kaschner K, Mouillot D, Raimondi PT, Starr RM, Ziegler SL, Malone D, Marraffini ML, Parsons-Field A, Spiecker B, Yeager M, Nickols KJ, Caselle JE.   +23 more
europepmc   +2 more sources

Toward a functional understanding of novel fire regimes in tropical forests. [PDF]

Am J Bot
Abstract Climate change and land‐use alterations are driving forest fires to unprecedented frequencies and intensities worldwide. Even wet tropical forests—historically rarely subjected to fire—are increasingly experiencing fire disturbances. The impact of wildfires on these forests is likely large, since many of their tree species are not adapted to ...
Pacuk D, van der Sleen P, Sterck FJ, van der Sande MT.   +3 more
europepmc   +2 more sources

Producción de biomasa en cultivos de maíz: Zona central de la costa de Ecuador

Revista de Ciencias Sociales, 2021
La reducción de la brecha entre el rendimiento actual y el alcanzable de maíz, representa una oportunidad para incrementar los beneficios de los productores, para el efecto como primer paso, es pertinente evaluar la producción de biomasa del maíz.
Gregorio Humberto Vásconez Montúfar, Luis Alberto Caicedo Acosta, Diana Verónica Véliz Zamora, Fernando David Sánchez Mora   +3 more
doaj   +1 more source

Threshold responses of floating meadow fish communities to floodplain forest cover in the lower Amazon River. [PDF]

Conserv Biol
Abstract Forest cover is positively associated with fish biomass and fisheries yield in the Amazon River floodplain, and many species enter flooded forests to feed, spawn, or seek refuge from predation. Floating macrophyte beds, known as floating meadows, in Amazon floodplains support high fish diversity and serve as nursery habitat for many fishes of ...
Grinstead S, Arantes CC, Winemiller KO, Kelso-Winemiller LC, de Oliveira JA, Petrere M, Freitas CEC.   +6 more
europepmc   +2 more sources

Vulnerability of tropical fish communities across depth in the central Indian Ocean. [PDF]

Conserv Biol
Abstract Coral reefs and their fish communities below scuba diving depth (>30 m), in mesophotic coral ecosystems (MCEs) (∼30–150 m), in rariphotic (150–300 m), and in upper bathyal waters (300–500 m) are often underexplored, especially in the Indian Ocean.
Stefanoudis PV, de Villiers NM, Afzal MS, Amir H, Amjad F, Hashim AS, Jauharee AR, Palmer R, Rogers AD, Shimal M, Naeem S, Ahusan M, Woodall LC.   +12 more
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

Production of lactic acid from whey using Lactobacillus delbrueckii subsp. bulgaricus and Streptococcus thermophilus

Revista Colombiana de Química, 2015
The main objective of this research was to determine the proper growth conditions of Lactobacillus delbrueckii subsp. bulgaricus and Streptococcus thermophilus for the production of lactic acid using serum as substract.
Adriana M. Rojas, Liceth P. Montaño, Marlon J. Bastidas   +2 more
doaj   +1 more source

Trasplante de colonias de Cladophora crispata susceptibles de morir para el incremento de la biomasa disponible: Estrategia para la sostenibilidad y seguridad alimentaria en el lago Titicaca

Scientia Agropecuaria, 2021
El alga Cladophora crispata “Llaska” es una especie alimenticia importante para las poblaciones que viven en la zona circunlacustre del lago Titicaca. Sin embargo, su biomasa se ve afectada por la disminución del nivel de lago en la época seca. Por ello,
Ángel Canales-Gutiérrez, Ivon Rocio Gutierrez-Flores   +1 more
doaj   +1 more source