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8 resultados encontrados para: AUTOR: Díaz Echeverria, Víctor Francisco
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Resumen en: Español | Inglés |
Resumen en español

El objetivo del estudio fue determinar el valor nutritivo, la fermentación ruminal y la producción de metano in vitro del follaje de especies arbóreas y arbustivas con potencial forrajero como estrategias de alimentación en época de secas y mitigación de las emisiones de metano. El líquido ruminal fue extraído por medio de una sonda esofágica. Se utilizó un diseño en bloques repetidos en el tiempo. El contenido de proteína cruda (PC) y fibra detergente neutro y acida fluctuaron de 6.14% a 21.78%, 44.34% a 77.43% y 16.12% a 49.53% de materia seca (MS). No se encontró diferencia en el volumen máximo de gas (p > 0.05). La degradabilidad fue diferente, observando la mejor en Tithonia diversifolia (760.40 g/kg de MS), Morus alba (800.66 g/kg de MS) y Hibiscus rosa-sinensis (800.16 g/kg de MS), mientras que la más baja fue Megatryrsus maximus (390.40 g/kg de MS y 287.40 g/kg de materia orgánica (MO)) (p < 0.05). No se observó diferencia en la producción de metano (CH4) (p > 0.05). Se concluye que L. leucocephala, P. piscipula, B. alicastrum y G. ulmifolia, T. diversifolia y M. alba tienen un alto potencial para ser incluidos en la dieta de rumiantes como fuentes de proteína en época de secas y estrategias para mitigar las emisiones de metano.

Resumen en inglés

The objective of the study was to determine the nutritional value, ruminal fermentation, and in vitro methane production of foliage of tree and shrubs species with forage potential as feeding strategies in dry season and mitigation of methane emissions. The rumen liquor was taken by an esophageal tube. A repeated block design overtime was used. The content of crude protein (CP) and neutral and acid detergent fiber ranged from 6.14% to 21.78%, 44.34% to 77.43% and 16.12% to 49.53% of dry matter (DM). No difference was found in the maximum volume of gas (p > 0.05). The degradability was different among species, and it was higher for Tithonia diversifolia (760.40 g/kg DM), Morus alba (800.66 g/kg DM) and Hibuscus rosa-sinensis (800.16 g/kg DM), whilst the lower was for Megathyrsus maximus (390.40 g/kg DM and 287.40 g/kg organic matter (OM)) (p < 0.05). No difference in methane (CH4) production was observed (p > 0.05). It is concluded that L. leucocephala, P. piscipula, B. alicastrum and G. ulmifolia, T. diversifolia, and M. alba have a high potential to be included in the ruminant diet as sources of protein in the dry season and strategies to mitigate methane emissions


2.
Artículo
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Fine root density and vertical distribution of Leucaena leucocephala and grasses in silvopastoral systems under two harvest intervals
Montejo Martínez, David (autor) ; Díaz Echeverria, Víctor Francisco (autor) ; Villanueva López, Gilberto (autor) ; Aryal, Deb Raj (autor) ; Casanova Lugo, Fernando (autor) ; Canul Solís, Jorge Rodolfo (autor) ; Escobedo Mex, José Guadalupe (autor) ;
Disponible en línea
Contenido en: Agroforest Syst Volumen 94, número 3 (June 2020), páginas 843-855 ISSN: 1572-9680
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Resumen en: Inglés |
Resumen en inglés

Understanding belowground morphological mechanisms of trees and grasses is a complicated task but can help in the design and management of silvopastoral systems. In this study, we evaluated the effect of the harvest intervals (i.e. 30 and 50 days) of aboveground biomass on the fine root density and vertical distribution in two silvopastoral systems (SPS): one comprising Leucaena leucocephala (legume tree) and Cynodon plectostachyus (grass) and the other L. leucocephala and Panicum maximum. We used a completely randomized design with four repetitions. We sampled fine roots by using a metal cylinder (8 cm diameter and 50 cm length) 7 days after each harvest. We washed the samples with pressurized water to separate them from the soil. The roots were digitalized at a resolution of 600 dpi to determine the diameter and specific root length by using IJ Rhizo Ò software. Samples were subsequently dried to quantify fine root mass. We found that the greater percentages of fine roots were between 0.4 and 0.8 mm for the legume and between 0.2 and 0.4 mm for grasses. The fine root length and mass density of P. maximum was higher (P\0.001) compared to C. plectostachyus in both harvest intervals. However, the fine root density of L. leucocephala did not vary between SPS (P> 0.05). The effect of harvest interval was significant only in some soil layers in both SPS (P> 0.05). Most of the pasture roots were found in the upper soil layer (0–20 cm), while L. leucocephala roots were present to deeper soil layers. We conclude that P. maximum has a greater rooting capacity and amore rapid recovery than C. plectostachyus, which has greater diameters and lower root density. However, L. leucocephala presented deeper and thicker fine rootsin both SPS, which is a good indication of its belowground recovery capacity to aboveground disturbances.


3.
- Artículo con arbitraje
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Carbon storage in a silvopastoral system compared to that in a deciduous dry forest in Michoacán, Mexico
López Santiago, José Germain (autor) ; Casanova Lugo, Fernando (autor) ; Villanueva López, Gilberto (autor) ; Díaz Echeverria, Víctor Francisco (autor) ; Solorio Sánchez, Francisco Javier (autor) ; Martínez Zurimendi, Pablo (autor) ; Aryal, Deb Raj (autor) ; Chay Canul, Alfonso Juventino (autor) ;
Disponible en línea
Contenido en: Agroforestry Systems Vol. 93, no. 1 (Fabruary 2019), p. 199-211 ISSN: 0167-4366
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Resumen en: Inglés |
Resumen en inglés

Livestock production in the tropics contributes significantly to global greenhouse gas emissions, so better understanding the role of silvopastoral systems (SPS) in mitigating such emissions is necessary. The aim of this study was to evaluate the amounts of carbon stored in the biomass and soil organic carbon (SOC) components of a Leucaena leucocephala cum Panicum maximum silvopasture system (SPS) compared to a deciduous tropical forest (DTF), and a grass monoculture (GM) in Michoacán, Mexico. The above- and below-ground biomass were measured by destructive sampling in the SPS and GM, while previously reported allometric equations were used to quantify biomass stocks in the DTF. The SOC concentration up to 30 cm was determined by dry combustion method. The SPS and DTF contained more aboveground biomass (41.8 ± 3.30 and 36.7 ± 5.72 Mg DM ha−¹) compared to GM (8.0 ± 0.76 Mg DM ha−¹). However, the SPS exhibited greater belowground biomass (16.4 ± 1.95 Mg DM ha−¹) than the other systems. The DTF had the highest SOC fraction in all depth classes with values ranging from 3.1 ± 0.07% to 3.7 ± 0.06%, respectively, compared to the other systems. The total carbon stocks in SPS was similar to DTF (120.7 ± 10.97 vs. 120.9 ± 6.38 Mg C ha−¹) but was significantly higher than GM (78.2 ± 8.41 Mg C ha−¹). In dry tropical conditions, SPS displays enormous potential for increasing biomass and soil carbon stocks compared to the GM and can thus be used as a greenhouse gas mitigation strategy in livestock production systems.


4.
Artículo
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Resumen en: Inglés |
Resumen en inglés

Macro-invertebrate diversity in silvopastoral systems of Southern Quintana Roo, Mexico. The diversity of macro-invertebrates is related to the state of disturbance of the soil, caused mainly by the land-use change for agricultural activities. A strategy for the conservation of these organisms is the implementation of diversified production systems such as silvopastoral systems. However, in the Southeast of Mexico, information is still limited. The aim of the present study was to evaluate and compare the richness, abundance and composition of macro-invertebrates in four contrasting agro-ecosystems: two silvopastoral systems made of Leucaena leucocephala and associated pastures (i.e. Panicum maximum cv mombaza and Cynodon plectostachyus ), a pasture of Brachiaria brizantha with scattered trees in low density and, a medium-statured tropical dry forest. In each system, an area of one hectare was delimited and a transect of 50 m in length was established in which five pit-fall traps were placed every 10 m. The sampling was carried out in February and May of 2018 and in each month five collections were made with five-day intervals. A total of 1 737 organisms belonging to 10 orders of the class Insecta and one of the class Gastropoda were collected.

The medium-statured tropical dry forest (923 individuals) and the silvopastoral systems of L. leucocephala with C. Plectostachyus (354 individuals) show the highest abundance of macro-invertebrates. The most abundant genera were: Hymenoptera, Coleoptera, Aracninae and Orthoptera. The higher macro-invertebrate diversity was found in the silvopastoral systems of L. leucocephala with P. maximum (H ‘= 1.58) and L. leucocephala with C. plectostachyus (H’ = 1.44). The results show that livestock systems managed with woody components (trees or shrubs) are home of an important abundance and richness of macro-invertebrates, compared to tropical forests. This diversity of macro-invertebrates may contribute to the integrity and functionality of the agro-ecosystems.


5.
Capítulo de libro
Almacenamiento de carbono en bancos de forraje de especies leñosas en Yucatán
Casanova Lugo, Fernando ; Petit Aldana, Judith (coaut.) ; Solorio Sánchez, Francisco (coaut.) ; Díaz Echeverria, Víctor Francisco (coaut.) ; Villanueva López, Gilberto (coaut.) ; Ramírez Avilés, Luis (coaut.) ; López Martínez, Jorge Omar (coaut.) ;
Contenido en: Estado actual del conocimiento del ciclo del carbono y sus interacciones en México: Síntesis a 2017 Texcoco, Estado de México, México : Programa Mexicano del Carbono, 2018 página 583-589 ISBN:978-607-96490-5-0
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
B9950 (Disponible)
Disponibles para prestamo: 1
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6.
Artículo
The database of the PREDICTS (Projecting Responses of Ecological Diversity In Changing Terrestrial Systems) project
Hudson, Lawrence N. (autor) ; Newbold, Tim (coaut.) ; Contu, Sara (coaut.) ; Hill, Samantha L. L. (coaut.) ; Lysenko, Igor (coaut.) ; De Palma, Adriana (coaut.) ; Phillips, Helen R. P. (coaut.) ; Alhusseini, Tamera I. (coaut.) ; Bedford, Felicity E. (coaut.) ; Bennett, Dominic J. (coaut.) ; Booth, Hollie. (coaut.) ; Burton, Victoria J. (coaut.) ; Chng, Charlotte W. T. (coaut.) ; Choimes, Argyrios (coaut.) ; Correia, David L. P. (coaut.) ; Day, Julie (coaut.) ; Echeverría Londoño, Susy (coaut.) ; Emerson, Susan R. (coaut.) ; Gao, Di (coaut.) ; Garon, Morgan (coaut.) ; Harrison, Michelle L. K. (coaut.) ; Ingram, Daniel J. (coaut.) ; Jung, Martin (coaut.) ; Kemp, Victoria (coaut.) ; Kirkpatrick, Lucinda (coaut.) ; Martin, Callum D. (coaut.) ; Pan, Yuan (coaut.) ; Pask Hale, Gwilym D. (coaut.) ; Pynegar, Edwin L. (coaut.) ; Robinson, Alexandra N. (coaut.) ; Sánchez Ortiz, Katia (coaut.) ; Senior, Rebecca A. (coaut.) ; Simmons, Benno I. (coaut.) ; White, Hannah J. (coaut.) ; Zhang, Hanbin (coaut.) ; Aben, Job (coaut.) ; Abrahamczyk, Stefan (coaut.) ; Adum, Gilbert B. (coaut.) ; Aguilar Barquero, Virginia (coaut.) ; Aizen, Marcelo A. (coaut.) ; Albertos, Belén (coaut.) ; Alcalá, Elio L. (coaut.) ; Alguacil, María del Mar (coaut.) ; Alignier, Audrey (coaut.) ; Ancrenaz, Marc (coaut.) ; Andersen, Alan N. (coaut.) ; Arbeláez Cortés, Enrique (coaut.) ; Armbrecht, Inge (coaut.) ; Arroyo Rodríguez, Víctor (coaut.) ; Aumann, Tom (coaut.) ; Axmacher, Jan C. (coaut.) ; Azhar, Badrul (coaut.) ; Azpiroz, Adrián B. (coaut.) ; Baeten, Lander (coaut.) ; Bakayoko, Adama (coaut.) ; Báldi, András (coaut.) ; Banks, John E. (coaut.) ; Baral, Sharad K. (coaut.) ; Barlow, Jos (coaut.) ; Barratt, Barbara I. P. (coaut.) ; Barrico, Lurdes (coaut.) ; Bartolommei, Paola (coaut.) ; Barton, Diane M. (coaut.) ; Basset, Yves (coaut.) ; Batáry, Péter (coaut.) ; Bates, Adam J. (coaut.) ; Baur, Bruno (coaut.) ; Bayne, Erin M. (coaut.) ; Beja, Pedro (coaut.) ; Benedick, Suzan (coaut.) ; Berg, Åke (coaut.) ; Bernard, Henry (coaut.) ; Berry, Nicholas J. (coaut.) ; Bhatt, Dinesh (coaut.) ; Bicknell, Jake E. (coaut.) ; Bihn, Jochen H. (coaut.) ; Blake, Robin J. (coaut.) ; Bobo, Kadiri S. (coaut.) ; Bóçon, Roberto (coaut.) ; Boekhout, Teun (coaut.) ; Böhning Gaese, Katrin (coaut.) ; Bonham, Kevin J. (coaut.) ; Borges, Paulo A. V. (coaut.) ; Borges, Sérgio H. (coaut.) ; Boutin, Céline (coaut.) ; Bouyer, Jérémy (coaut.) ; Bragagnolo, Cibele (coaut.) ; Brandt, Jodi S. (coaut.) ; Brearley, Francis Q. (coaut.) ; Brito, Isabel (coaut.) ; Bros, Vicenç (coaut.) ; Brunet, Jörg (coaut.) ; Buczkowski, Grzegorz (coaut.) ; Buddle, Christopher M. (coaut.) ; Bugter, Rob (coaut.) ; Buscardo, Erika (coaut.) ; Buse, Jörn (coaut.) ; Cabra García, Jimmy (coaut.) ; Cáceres, Nilton C. (coaut.) ; Cagle, Nicolette L. (coaut.) ; Calviño Cancela, María (coaut.) ; Cameron, Sydney A. (coaut.) ; Cancello, Eliana M. (coaut.) ; Caparrós, Rut (coaut.) ; Cardoso, Pedro (coaut.) ; Carpenter, Dan (coaut.) ; Carrijo, Tiago F. (coaut.) ; Carvalho, Anelena L. (coaut.) ; Cassano, Camila R. (coaut.) ; Castro, Helena (coaut.) ; Castro Luna, Alejandro A. (coaut.) ; Cerda B., Rolando (coaut.) ; Cerezo, Alexis (coaut.) ; Chapman, Kim Alan (coaut.) ; Chauvat, Matthieu (coaut.) ; Christensen, Morten (coaut.) ; Clarke, Francis M. (coaut.) ; Cleary, Daniël Francis Richard (coaut.) ; Colombo, Giorgio (coaut.) ; Connop, Stuart P. (coaut.) ; Craig, Michael D. (coaut.) ; Cruz López, Leopoldo Caridad (coaut.) ; Cunningham, Saul A. (coaut.) ; D’Aniello, Biagio (coaut.) ; D'Cruze, Neil C. (coaut.) ; da Silva, Pedro Giovâni (coaut.) ; Dallimer, Martin (coaut.) ; Danquah, Emmanuel (coaut.) ; Darvill, Ben (coaut.) ; Dauber, Jens (coaut.) ; Davis, Adrian L. V. (coaut.) ; Dawson, Jeff (coaut.) ; de Sassi, Claudio (coaut.) ; de Thoisy, Benoit (coaut.) ; Deheuvels, Olivier (coaut.) ; Dejean, Alain (coaut.) ; Devineau, Jean Louis (coaut.) ; Diekötter, Tim (coaut.) ; Dolia, Jignasu V. (coaut.) ; Domínguez, Erwin (coaut.) ; Domínguez Haydar, Yamileth (coaut.) ; Dorn, Silvia (coaut.) ; Draper, Isabel (coaut.) ; Dreber, Niels (coaut.) ; Dumont, Bertrand (coaut.) ; Dures, Simon G. (coaut.) ; Dynesius, Mats (coaut.) ; Edenius, Lars (coaut.) ; Eggleton, Paul (coaut.) ; Eigenbrod, Felix (coaut.) ; Elek, Zoltán (coaut.) ; Entling, Martin H. (coaut.) ; Esler, Karen J. (coaut.) ; Lima, Ricardo F. de (coaut.) ; Faruk, Aisyah (coaut.) ; Farwig, Nina (coaut.) ; Fayle, Tom M. (coaut.) ; Felicioli, Antonio (coaut.) ; Felton, Annika M. (coaut.) ; Fensham, Roderick J. (coaut.) ; Fernández, Ignacio C. (coaut.) ; Ferreira, Catarina C. (coaut.) ; Ficetola, Gentile F. (coaut.) ; Fiera, Cristina (coaut.) ; Filgueiras, Bruno K. C. (coaut.) ; Fırıncıoğlu, Hüseyin K. (coaut.) ; Flaspohler, David (coaut.) ; Floren, Andreas (coaut.) ; Fonte, Steven J. (coaut.) ; Fournier, Anne (coaut.) ; Fowler, Robert E. (coaut.) ; Franzén, Markus (coaut.) ; Fraser, Lauchlan H. (coaut.) ; Fredriksson, Gabriella Margit (coaut.) ; Freire Jr, Geraldo B. (coaut.) ; Frizzo, Tiago L. M. (coaut.) ; Fukuda, Daisuke (coaut.) ; Furlani, Dario (coaut.) ; Gaigher, René (coaut.) ; Ganzhorn, Jörg U. (coaut.) ; García, Karla P. (coaut.) ; García R., Juan C. (coaut.) ; Garden, Jenni G. (coaut.) ; Garilleti, Ricardo (coaut.) ; Ge, Bao Ming (coaut.) ; Gendreau Berthiaume, Benoit (coaut.) ; Gerard, Philippa J. (coaut.) ; Gheler Costa, Carla (coaut.) ; Gilbert, Benjamin (coaut.) ; Giordani, Paolo (coaut.) ; Giordano, Simonetta (coaut.) ; Golodets, Carly (coaut.) ; Gomes, Laurens G. L. (coaut.) ; Gould, Rachelle K. (coaut.) ; Goulson, Dave (coaut.) ; Gove, Aaron D. (coaut.) ; Granjon, Laurent (coaut.) ; Grass, Ingo (coaut.) ; Gray, Claudia L. (coaut.) ; Grogan, James (coaut.) ; Gu, Weibin (coaut.) ; Guardiola, Moisès (coaut.) ; Gunawardene, Nihara R. (coaut.) ; Gutiérrez, Álvaro G. (coaut.) ; Gutiérrez Lamus, Doris L. (coaut.) ; Haarmeyer, Daniela H. (coaut.) ; Hanley, Mick E. (coaut.) ; Hanson, Thor (coaut.) ; Hashim, Nor R. (coaut.) ; Hassan, Shombe N. (coaut.) ; Hatfield, Richard G. (coaut.) ; Hawes, Joseph E. (coaut.) ; Hayward, Matt W. (coaut.) ; Hébert, Christian (coaut.) ; Helden, Alvin J. (coaut.) ; Henden, John André (coaut.) ; Henschel, Philipp (coaut.) ; Hernández, Lionel (coaut.) ; Herrera, James P. (coaut.) ; Herrmann, Farina (coaut.) ; Herzog, Félix (coaut.) ; Higuera Díaz, Diego (coaut.) ; Hilje, Branko (coaut.) ; Höfer, Hubert (coaut.) ; Hoffmann, Anke (coaut.) ; Horgan, Finbarr G. (coaut.) ; Hornung, Elisabeth (coaut.) ; Horváth, Roland (coaut.) ; Hylander, Kristoffer (coaut.) ; Isaacs-Cubides, Paola (coaut.) ; Ishida, Hiroaki (coaut.) ; Ishitani, Masahiro (coaut.) ; Jacobs, Carmen T. (coaut.) ; Jaramillo, Víctor J. (coaut.) ; Jauker, Birgit (coaut.) ; Jiménez Hernández, F. (coaut.) ; Johnson, McKenzie F. (coaut.) ; Jolli, Virat (coaut.) ; Jonsell, Mats (coaut.) ; Juliani, S. Nur (coaut.) ; Jung, Thomas S. (coaut.) ; Kapoor, Vena (coaut.) ; Kappes, Heike (coaut.) ; Kati, Vassiliki (coaut.) ; Katovai, Eric (coaut.) ; Kellner, Klaus (coaut.) ; Kessler, Michael (coaut.) ; Kirby, Kathryn R. (coaut.) ; Kittle, Andrew M. (coaut.) ; Knight, Mairi E. (coaut.) ; Knop, Eva (coaut.) ; Kohler, Florian (coaut.) ; Koivula, Matti (coaut.) ; Kolb, Annette (coaut.) ; Kone, Mouhamadou (coaut.) ; Kőrösi, Ádám (coaut.) ; Krauss, Jochen (coaut.) ; Kumar, Ajith (coaut.) ; Kumar, Raman (coaut.) ; Kurz, David J. (coaut.) ; Kutt, Alex S. (coaut.) ; Lachat, Thibault (coaut.) ; Lantschner, Victoria (coaut.) ; Lara Valencia, Francisco (coaut.) ; Lasky, Jesse R. (coaut.) ; Latta, Steven C. (coaut.) ; Laurance, William F. (coaut.) ; Lavelle, Patrick (coaut.) ; Le Féon, Violette (coaut.) ; LeBuhn, Gretchen (coaut.) ; Légaré, Jean-Philippe (coaut.) ; Lehouck, Valérie (coaut.) ; Lencinas, María V. (coaut.) ; Lentini, Pia E. (coaut.) ; Letcher, Susan G. (coaut.) ; Li, Qi (coaut.) ; Litchwark, Simon A. (coaut.) ; Littlewood, Nick A. (coaut.) ; Liu, Yunhui (coaut.) ; Lo Man Hung, Nancy (coaut.) ; López Quintero, Carlos Alberto (coaut.) ; Louhaichi, Mounir (coaut.) ; Lövei, Gabor L. (coaut.) ; Lucas Borja, Manuel Esteban (coaut.) ; Luja Molina, Víctor Hugo (coaut.) ; Luskin, Matthew S. (coaut.) ; Mac Swiney González, María Cristina (coaut.) ; Maeto, Kaoru (coaut.) ; Magura, Tibor (coaut.) ; Mallari, Neil Aldrin (coaut.) ; Malone, Louise A. (coaut.) ; Malonza, Patrick K. (coaut.) ; Malumbres Olarte, Jagoba (coaut.) ; Mandujano Rodríguez, Salvador (coaut.) ; Måren, Inger E. (coaut.) ; Marín Spiotta, Erika (coaut.) ; Marsh, Charles J. (coaut.) ; Marshall, E. J. P. (coaut.) ; Martínez, Eliana (coaut.) ; Martínez Pastur, Guillermo (coaut.) ; Moreno Mateos, David (coaut.) ; Mayfield, Margaret M. (coaut.) ; Mazimpaka, Vicente (coaut.) ; McCarthy, Jennifer L. (coaut.) ; McCarthy, Kyle P. (coaut.) ; McFrederick, Quinn S. (coaut.) ; McNamara, Sean (coaut.) ; Medina, Nagore G. (coaut.) ; Medina, Rafael (coaut.) ; Mena, José L. (coaut.) ; Mico, Estefania (coaut.) ; Mikusinski, Grzegorz (coaut.) ; Milder, Jeffrey C. (coaut.) ; Miller, James R. (coaut.) ; Miranda Esquivel, Daniel R. (coaut.) ; Moir, Melinda L. (coaut.) ; Morales, Carolina L. (coaut.) ; Muchane, Mary N. (coaut.) ; Muchane, Muchai (coaut.) ; Mudri Stojnic, Sonja (coaut.) ; Munira, A. Nur (coaut.) ; Muñoz Alonso, Luis Antonio (coaut.) ; Munyekenye, B. F. (coaut.) ; Naidoo, Robin (coaut.) ; Naithani, A. (coaut.) ; Nakagawa, Michiko (coaut.) ; Nakamura, Akihiro (coaut.) ; Nakashima, Yoshihiro (coaut.) ; Naoe, Shoji (coaut.) ; Nates Parra, Guiomar (coaut.) ; Navarrete Gutiérrez, Darío Alejandro (coaut.) ; Navarro Iriarte, Luis (coaut.) ; Ndang’ang’a, Paul K. (coaut.) ; Neuschulz, Eike L. (coaut.) ; Ngai, Jacqueline T. (coaut.) ; Nicolás, Violaine (coaut.) ; Nilsson, Sven G. (coaut.) ; Noreika, Norbertas (coaut.) ; Norfolk, Olivia (coaut.) ; Noriega, Jorge Ari (coaut.) ; Norton, David A. (coaut.) ; Nöske, Nicole M. (coaut.) ; Nowakowski, A. Justin (coaut.) ; Numa, Catherine (coaut.) ; O’Dea, Niall (coaut.) ; O’Farrell, Patrick J. (coaut.) ; Oduro, William (coaut.) ; Oertli, Sabine (coaut.) ; Ofori Boateng, Caleb (coaut.) ; Oke, Christopher Omamoke (coaut.) ; Oostra, Vicencio (coaut.) ; Osgathorpe, Lynne M. (coaut.) ; Otavo, Samuel Eduardo (coaut.) ; Page, Navendu V. (coaut.) ; Paritsis, Juan (coaut.) ; Parra H., Alejandro (coaut.) ; Parry, Luke (coaut.) ; Pe’er, Guy (coaut.) ; Pearman, Peter B. (coaut.) ; Pelegrin, Nicolás (coaut.) ; Pélissier, Raphaël (coaut.) ; Peres, Carlos A. (coaut.) ; Peri, Pablo L. (coaut.) ; Persson, Anna S. (coaut.) ; Petanidou, Theodora (coaut.) ; Peters, Marcell K. (coaut.) ; Pethiyagoda, Rohan S. (coaut.) ; Phalan, Ben (coaut.) ; Philips, T. Keith (coaut.) ; Pizarro Araya, Jaime (coaut.) ; Plumptre, A. J. (coaut.) ; Poggio, Santiago L. (coaut.) ; Politi, Natalia (coaut.) ; Pons, Pere (coaut.) ; Poveda, Katja (coaut.) ; Power, Eileen F. (coaut.) ; Presley, Steven J. (coaut.) ; Proença, Vânia (coaut.) ; Quaranta, Marino (coaut.) ; Quintero, Carolina (coaut.) ; Rader, Romina (coaut.) ; Ramesh, B. R. (coaut.) ; Ramírez Pinilla, Martha Patricia (coaut.) ; Ranganathan, Jai (coaut.) ; Rasmussen, Claus (coaut.) ; Redpath Downing, Nicola A. (coaut.) ; Reid, J. Leighton (coaut.) ; Reis, Yana T. (coaut.) ; Rey Benayas, José María (coaut.) ; Rey Velasco, Juan Carlos (coaut.) ; Reynolds, Chevonne (coaut.) ; Bandini Ribeiro, Danilo (coaut.) ; Richards, Miriam H. (coaut.) ; Richardson, Barbara A. (coaut.) ; Richardson, Michael J. (coaut.) ; Macip Ríos, Rodrigo (coaut.) ; Robinson, Richard (coaut.) ; Robles, Carolina A. (coaut.) ; Römbke, Jörg (coaut.) ; Romero Duque, Luz Piedad (coaut.) ; Rös, Matthias (coaut.) ; Rosselli, Loreta (coaut.) ; Rossiter, Stephen J. (coaut.) ; Roth, Dana S. (coaut.) ; Roulston, T’ai H. (coaut.) ; Rousseau, Laurent (coaut.) ; Rubio, André V. (coaut.) ; Ruel, Jean Claude (coaut.) ; Sadler, Jonathan P. (coaut.) ; Sáfián, Szabolcs (coaut.) ; Saldaña Vázquez, Romeo A. (coaut.) ; Sam, Katerina (coaut.) ; Samnegård, Ulrika (coaut.) ; Santana, Joana (coaut.) ; Santos, Xavier (coaut.) ; Savage, Jade (coaut.) ; Schellhorn, Nancy A. (coaut.) ; Schilthuizen, Menno (coaut.) ; Schmiedel, Ute (coaut.) ; Schmitt, Christine B. (coaut.) ; Schon, Nicole L. (coaut.) ; Schüepp, Christof (coaut.) ; Schumann, Katharina (coaut.) ; Schweiger, Oliver (coaut.) ; Scott, Dawn M. (coaut.) ; Scott, Kenneth A. (coaut.) ; Sedlock, Jodi L. (coaut.) ; Seefeldt, Steven S. (coaut.) ; Shahabuddin, Ghazala (coaut.) ; Shannon, Graeme (coaut.) ; Sheil, Douglas (coaut.) ; Sheldon, Frederick H. (coaut.) ; Shochat, Eyal (coaut.) ; Siebert, Stefan J. (coaut.) ; Silva, Fernando A. B. (coaut.) ; Simonetti, Javier A. (coaut.) ; Slade, Eleanor M. (coaut.) ; Smith, Jo (coaut.) ; Smith Pardo, Allan H. (coaut.) ; Sodhi, Navjot S. (coaut.) ; Somarriba, Eduardo J. (coaut.) ; Sosa, Ramón A. (coaut.) ; Soto Quiroga, Grimaldo (coaut.) ; St Laurent, Martin Hugues (coaut.) ; Starzomski, Brian M. (coaut.) ; Stefanescu, Constanti (coaut.) ; Steffan Dewenter, Ingolf (coaut.) ; Stouffer, Philip C. (coaut.) ; Stout, Jane C. (coaut.) ; Strauch, Ayron M. (coaut.) ; Struebig, Matthew J. (coaut.) ; Su, Zhimin (coaut.) ; Suárez Rubio, Marcela (coaut.) ; Sugiura, Shinji (coaut.) ; Summerville, Keith S. (coaut.) ; Sung, Yik Hei (coaut.) ; Sutrisno, Hari (coaut.) ; Svenning, Jens Christian (coaut.) ; Teder, Tiit (coaut.) ; Threlfall, Caragh G. (coaut.) ; Tiitsaar, Anu (coaut.) ; Todd, Jacqui H. (coaut.) ; Tonietto, Rebecca K. (coaut.) ; Torre, Ignasi (coaut.) ; Tóthmérész, Béla (coaut.) ; Tscharntke, Teja (coaut.) ; Turner, Edgar C. (coaut.) ; Tylianakis, Jason M. (coaut.) ; Uehara Prado, Marcio (coaut.) ; Urbina Cardona, Nicolas (coaut.) ; Vallan, Denis (coaut.) ; Vanbergen, Adam J. (coaut.) ; Vasconcelos, Heraldo L. (coaut.) ; Vassilev, Kiril (coaut.) ; Verboven, Hans A. F. (coaut.) ; João Verdasca, Maria (coaut.) ; Verdú, José R. (coaut.) ; Vergara, Carlos H. (coaut.) ; Vergara, Pablo M. (coaut.) ; Verhulst, Jort (coaut.) ; Virgilio, Massimiliano (coaut.) ; Van Vu, Lien (coaut.) ; Waite, Edward M. (coaut.) ; Walker, Tony R. (coaut.) ; Wang, Hua Feng (coaut.) ; Wang, Yanping (coaut.) ; Watling, James I. (coaut.) ; Weller, Britta (coaut.) ; Wells, Konstans (coaut.) ; Westphal, Catrin (coaut.) ; Wiafe, Edward D. (coaut.) ; Williams, Christopher D. (coaut.) ; Willig, Michael R. (coaut.) ; Woinarski, John C. Z. (coaut.) ; Wolf, Jan Hendrik Diederik (coaut.) ; Wolters, Volkmar (coaut.) ; Woodcock, Ben A. (coaut.) ; Wu, Jihua (coaut.) ; Wunderle, Joseph M. (coaut.) ; Yamaura, Yuichi (coaut.) ; Yoshikura, Satoko (coaut.) ; Yu, Douglas W. (coaut.) ; Zaitsev, Andrey S. (coaut.) ; Zeidler, Juliane (coaut.) ; Zou, Fasheng (coaut.) ; Collen, Ben (coaut.) ; Ewers, Rob M. (coaut.) ; Mace, Georgina M. (coaut.) ; Purves, Drew W. (coaut.) ; Scharlemann, Jörn P. W. (coaut.) ; Purvi, Andy (coaut.) ;
Contenido en: Ecology and Evolution Vol. 7, no. 1 (January 2017), p. 145–188 ISSN: 2045-7758
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Resumen en: Inglés |
Resumen en inglés

The PREDICTS project-Projecting Responses of Ecological Diversity In Changing Terrestrial Systems (www.predicts.org.uk)-has collated from published studies a large, reasonably representative database of comparable samples of biodiversity from multiple sites that differ in the nature or intensity of human impacts relating to land use. We have used this evidence base to develop global and regional statistical models of how local biodiversity responds to these measures. We describe and make freely available this 2016 release of the database, containing more than 3.2 million records sampled at over 26,000 locations and representing over 47,000 species. We outline how the database can help in answering a range of questions in ecology and conservation biology. To our knowledge, this is the largest and most geographically and taxonomically representative database of spatial comparisons of biodiversity that has been collated to date; it will be useful to researchers and international efforts wishing to model and understand the global status of biodiversity.


7.
- Artículo con arbitraje
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The aim of this study was to assess the e ff ect of the inclusion of Leucaena leucocephala on dry matter (DM) intake and digestibility, nitrogen (N) balance and energy utilization in cattle fed a basal ration of Pennisetum purpureum and housed in metabolic crates. Five crossbred ( Bos taurus × Bos indicus ) heifers (BW: 295 ± 6 kg) were fed chopped P. purpureum grass and fi ve increasing levels of L. leucocephala (0, 20, 40, 60 and 80% of DM) in a 5 × 5 Latin square design. The intake of DM was similar (P > 0.05) among treatments, with an average of 7.03 kg of DM/ day. While the crude protein intake (CPI) linearly increased (P < 0.001) with the inclusion of L. leucocephala , the DM digestibility (average 492.3 g/kg DM) and OM digestibility (average 501.6 g/kg OM) were not a ff ected (P > 0.05) by the incorporation of L. leucocephala into the ration. The N intake and excretion in the urine increased linearly (P = 0.0001, 0.0001) as the level of L. leucocephala in the ration increased. In addition, methane energy loss as a percentage of that in the control ration, was of only 61% (P = 0.0005) with 80% incorporation of L. leucocephala in the ration. We concluded that the inclusion of L. leucocephala has the capacity to reduce energy losses in the form of methane emissions. Nevertheless, the energy losses in the urine increased with the addition of L. leucocephala to the ration, with the optimal levels of incorporation in the ration fl uctuating between 20 and 40% of the ration DM, which had no e ff ects on the dry matter intake (DMI), organic matter intake (OMI) or the digestibility of dry matter (DMD).


8.
- Artículo con arbitraje
*Solicítelo con su bibliotecario/a
Influence of the density of scattered trees in pastures on the structure and species composition of tree and grass cover in southern Tabasco, Mexico
Villanueva Partida, Carlos R. (coaut.) ; Casanova Lugo, Fernando (autor) ; Villanueva López, Gilberto (autor) ; González Valdivia, Noel Antonio (autor) ; Oros Ortega, Iván (autor) ; Díaz Echeverria, Víctor Francisco (autor) ;
Contenido en: Agriculture, Ecosystems and Environment Vol. 232 (September 2016), p. 1–8 ISSN: 0167-8809
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The rapid deforestation of Tabasco due to extensive livestock farming has resulted in a decrease in the original forest cover. Silvopastoral systems represent an option for reversing this problem. A comparative study was conducted to determine the influence of tree density on the structure and species composition of scattered trees in pastures (STP) as well as the herbaceous coverage. A total of 16 livestock systems with 3 STP densities were selected: low (from 24 to 49 individuals ha-¹), medium (from 53 to 85 individuals ha-¹) and high (from 129 to 212 individuals ha-¹ . The diameter at breast height, total height, clear bole height and crown area of all trees in each plot were measured. Shannon’s and Simpson’s index values were determined along with the relative importance values (RIVs), and the herbaceous cover under the tree canopy was measured in dry and rainy seasons. A total of 64 species representing 31 botanical families were found. The structure and composition of the STPs are correlated with arboreal density, and thus, species diversity was greater under low and medium densities. The tree species with the highest RIVs were Ceiba pentandra (L.) Gaertn., Guazuma ulmifolia (Lam.), and Tabebuia rosea (Bertol.) DC. in low-density STPs; Cordia alliodora (Ruiz & Pav.) Oken., Schizolobium parahyba (Vell.) S.F. Blak., and T. rosea in medium-density STPs and Swietenia macrophylla (King.) , Gmelina arborea (Roxb.), and C. alliodora in high-density STPs. The herbaceous cover was lower under high arboreal densities in both seasons. The STPs at high densities are inferred to be more specialized because they present less arboreal species diversity and structure than low-density STPs, and these properties also affect the coverage of the associated herbaceous component.