Preparing for, coping with and bouncing back after shocks. A nuanced resilience assessment for smallholder farms and farmers in Northern Ghana

Mirja Michalscheck Fred Kizito Carl Timler Jeroen Groot (2023, [Artículo])

Whole-Farm Model Health Shock CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA SUSTAINABLE INTENSIFICATION VULNERABILITY SMALLHOLDERS LANDSCAPE TECHNOLOGY

Calidad del agua de un lago urbano en la Ciudad de México (2015-abril 2017)

Ana Cecilia Tomasini Ortiz MERCEDES ESPERANZA RAMIREZ CAMPEROS Lina Cardoso (2017, [Memoria de congreso])

El lago urbano estudiado, está situado al oeste de la Ciudad de México. La problemática de la eutrofización del lago se agudizó y el lago presentó algunas características del estado de hipertrofía por su someridad y circulación limitada, falta de estratificación, regímenes de nutrientes y oxígeno no balanceado y productividad muy alta, tomando como parámetro concentraciones de Clorofila a. Por tal motivo, después de haber monitoreado el lago durante 2015 y hasta marzo de 2015, se adaptó una planta piloto de coagulación-floculación alimentada con agua del mismo lago para el retiro de algas.

Lagos Zonas urbanas Eutroficación Calidad del agua INGENIERÍA Y TECNOLOGÍA

El proyecto de creación del Estado del Centro, 1870

The project to create the State of the Center, 1870

EVELIN MARES CENTENO (2022, [Artículo])

El 21 de julio de 1870 los principales vecinos de la ciudad de León y el cabildo emprendieron las gestiones necesarias para crear una nueva entidad federativa que llevaría el nombre de Estado del Centro, la cual estaría compuesta por ayuntamientos de los estados de Jalisco y Guanajuato. A pe sar de que se trató de un proyecto político que se llevó a cabo en un momento en el que se estaba reconfigurando la geografía política del país, y de que contaba con los requisitos que solicitaba la Constitución de 1857, no logró consolidarse. Sin embargo, su estudio permite acercarse a conocer el proceso de configuración política del territorio.

On July 21, 1870, the main residents of the city of León and the council, undertook the necessary steps to create a new federal entity that would bear the name of the State of the Center, which would be composed of municipalities of the states of Jalisco and Guanajuato. Despite the fact that it was a political project that was carried out at a time when the

political geography of the country was being reconfigured, and that it had the requirements requested by the 1857 Constitution, it failed to consolidate. However, its study allows us to get closer to knowing the process of political configuration of the territory.

CIENCIAS SOCIALES León, Guanajuato, México Ayuntamiento Lagos Territorio Florencio Antillón, 1830-1903 León, Guanajuato, México Municipalities Lagos Territory Florencio Antillón, 1830-1903

Worldwide selection footprints for drought and heat in bread wheat (Triticum aestivum L.)

Ana Luisa Gómez Espejo Carolina Sansaloni Juan Burgueño Fernando Henrique Toledo Adalberto Benavides-Mendoza M. Humberto Reyes-Valdés (2022, [Artículo])

Genome–Environment Associations Climatic Variables Hormonal Elicitors CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA ADAPTATION DROUGHT STRESS HEAT STRESS LANDRACES TRITICUM AESTIVUM

Landscape and micronutrient fertilizer effect on agro-fortified wheat and teff grain nutrient concentration in western Amhara

Tilahun Amede Elizabeth Bailey Abdul Wahab Mossa Dereje Tirfessa MESFIN KEBEDE DESTA Getachew Agegnehu Tesfaye Shiferaw Sida Stephan Haefele R. Murray Lark Martin Broadley Samuel Gameda (2023, [Artículo])

Agronomic biofortification, encompassing the use of mineral and organic nutrient resources which improve micronutrient concentrations in staple crops is a potential strategy to promote the production of and access to micronutrient-dense foods at the farm level. However, the heterogeneity of smallholder farming landscapes presents challenges on implementing agronomic biofortification. Here, we test the effects of zinc (Zn)- and selenium (Se)-containing fertilizer on micronutrient concentrations of wheat (Triticum aestivum L.) and teff (Eragrostis tef (Zucc.) Trotter) grown under different landscape positions and with different micronutrient fertilizer application methods in the western Amhara region of Ethiopia. Field experiments were established in three landscape positions at three sites, with five treatments falling into three broad categories: (1) nitrogen (N) fertilizer rate; (2) micronutrient fertilizer application method; (3) sole or co-application of Zn and Se fertilizer. Treatments were replicated across five farms per landscape position and over two cropping seasons (2018 and 2019). Grain Zn concentration ranged from 26.6 to 36.4 mg kg−1 in wheat and 28.5–31.2 mg kg−1 in teff. Grain Se concentration ranged from 0.02 to 0.59 mg kg−1 in wheat while larger concentrations of between 1.01 and 1.55 mg kg−1 were attained in teff. Larger concentrations of Zn and Se were consistently attained when a foliar fertilizer was applied. Application of ⅓ nitrogen (N) yielded significantly larger grain Se concentration in wheat compared to a recommended N application rate. A moderate landscape effect on grain Zn concentration was observed in wheat but not in teff. In contrast, strong evidence of a landscape effect was observed for wheat and teff grain Se concentration. There was no evidence for any interaction of the treatment contrasts with landscape position except in teff, where an interaction effect between landscape position and Se application was observed. Our findings indicate an effect of Zn, Se, N, landscape position, and its interaction effect with Se on grain micronutrient concentrations. Agronomic biofortification of wheat and teff with micronutrient fertilizers is influenced by landscape position, the micronutrient fertilizer application method and N fertilizer management. The complexity of smallholder environmental settings and different farmer socio-economic opportunities calls for the optimization of nutritional agronomy landscape trials. Targeted application of micronutrient fertilizers across a landscape gradient is therefore required in ongoing agronomic biofortification interventions, in addition to the micronutrient fertilizer application method and the N fertilizer management strategy.

CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA BIOFORTIFICATION LANDSCAPE SELENIUM ZINC WHEAT

Do provisioning ecosystem services change along gradients of increasing agricultural production?

Ronju Ahammad Stephanie Tomscha Sarah Gergel Frédéric Baudron Jean-Yves Duriaux Chavarría Samson Foli Dominic Rowland Josh Van Vianen Terence Sunderland (2024, [Artículo])

Context: Increasing agricultural production shapes the flow of ecosystem services (ES), including provisioning services that support the livelihoods and nutrition of people in tropical developing countries. Although our broad understanding of the social-ecological consequences of agricultural intensification is growing, how it impacts provisioning ES is still unknown. Objectives: We examined the household use of provisioning ES across a gradient of increasing agricultural production in seven tropical countries (Bangladesh, Burkina Faso, Cameroon, Ethiopia, Indonesia, Nicaragua and Zambia). We answered two overarching questions: (1) does the use of provisioning ES differ along gradients of agriculture production ranging from zones of subsistence to moderate and to high agriculture production? and (2) are there synergies and/or trade-offs within and among groups of ES within these zones? Methods: Using structured surveys, we asked 1900 households about their assets, livestock, crops, and collection of forest products. These questions allowed us to assess the number of provisioning ES households used, and whether the ES used are functionally substitutable (i.e., used similarly for nutrition, material, and energy). Finally, we explored synergies and trade-offs among household use of provisioning ES. Results: As agricultural production increased, provisioning ES declined both in total number and in different functional groups used. We found more severe decreases in ES for relatively poorer households. Within the functional groups of ES, synergistic relationships were more often found than trade-offs in all zones, including significant synergies among livestock products (dairy, eggs, meat) and fruits. Conclusions: Considering landscape context provides opportunities to enhance synergies among provisioning services for households, supporting resilient food systems and human well-being.

Agricultural Production Zones Agricultural Intensifcation Synergies and Trade-Offs Landscape Multifunctionality Social-Ecological Systems CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA AGRICULTURE INTENSIFICATION ECOSYSTEM SERVICES LANDSCAPE SOCIAL-ECOLOGICAL RESILIENCE ECOSYSTEM SERVICES

Mining alleles for tar spot complex resistance from CIMMYT's maize Germplasm Bank

Martha Willcox Juan Burgueño Daniel Jeffers Zakaria Kehel Rosemary Shrestha Kelly Swarts Edward Buckler Sarah Hearne Charles Chen (2022, [Artículo])

Maize Landraces Maize Genetic Resources Allelic Diversity Rare Alleles Phenotypic Characterization Tropical Maize Phyllachora maydis CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA MAIZE LANDRACES GENETIC RESOURCES ALLELES FOLIAR DISEASES CLIMATE CHANGE

Exploring the genetic diversity and population structure of wheat landrace population conserved at ICARDA genebank

Muhammad Massub Tehseen Fatma Aykut Tonk Ahmed Amri Carolina Sansaloni Ezgi Kurtulus Muhammad Salman Mubarik Kumarse Nazari (2022, [Artículo])

Wheat Landraces Genetic Diversity SNP Markers Analysis of Molecular Variance AMOVA CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA BREEDING DISCRIMINANT ANALYSIS GENETIC VARIATION GENETIC DISTANCE GENETIC IMPROVEMENT GENETIC MARKERS HEXAPLOIDY LANDRACES POPULATION STRUCTURE SINGLE NUCLEOTIDE POLYMORPHISM TRITICUM AESTIVUM WHEAT

Addressing agricultural labour issues is key to biodiversity-smart farming

Thomas Daum Frédéric Baudron Matin Qaim Ingo Grass (2023, [Artículo])

There is an urgent need for agricultural development strategies that reconcile agricultural production and biodiversity conservation. This is especially true in the Global South where population growth is rapid and much of the world's remaining biodiversity is located. Combining conceptual thoughts with empirical insights from case studies in Indonesia and Ethiopia, we argue that such strategies will have to pay more attention to agricultural labour dynamics. Farmers have a strong motivation to reduce the heavy toil associated with farming by adopting technologies that save labour but can negatively affect biodiversity. Labour constraints can also prevent farmers from adopting technologies that improve biodiversity but increase labour intensity. Without explicitly accounting for labour issues, conservation efforts can hardly be successful. We hence highlight the need for biodiversity-smart agriculture, that is farming practices or systems that reconcile biodiversity with land and labour productivity. Our empirical insights suggest that technological and institutional options to reconcile farmers' socio-economic goals and biodiversity conservation exist but that more needs to be done to implement such options at scale.

Land Sharing Trade-Offs CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA AGRICULTURAL DEVELOPMENT BIODIVERSITY CONSERVATION LABOUR SUSTAINABILITY

Restauración ecológica de la laguna de Bojórquez, Benito Juárez, Quintana Roo: 5.2 Supervisión de acciones y desarrollo de herramienta de soporte para generación de escenarios de restauración ecológica

Ariosto Aguilar PEDRO MISAEL ALBORNOZ GONGORA Jorge Laurel Castillo Ruben Morales Jorge Laurel Castillo VICTOR HUGO ALCOCER YAMANAKA (2012, [Documento de trabajo])

Para mejorar las condiciones ambientales de la laguna de Bojórquez, el Gobierno del estado de Quintana Roo gestionó recursos federales para llevar a cabo el proyecto denominado “Restauración ecológica de la laguna de Bojórquez”. En éste se contempla la construcción de una herramienta de soporte para la generación de escenarios de restauración ecológica. Dicha herramienta consiste en la implementación de un modelo hidrodinámico para la caracterización del sistema lagunar en condiciones actuales y de proyecto, con las últimas se pretende dar solución a los problemas que actualmente enfrenta la laguna. De igual manera, se muestran las bases de datos utilizadas, datos adquiridos mediante mediciones sistemáticas, y las simulaciones numéricas del sistema lagunar en condiciones actuales y de proyecto.

Lagunas Restauración ecológica Hidrodinámica Modelos matemáticos Informes de proyectos Laguna de Bojórquez INGENIERÍA Y TECNOLOGÍA