Recent advances on research of native prawn Macrobrachium americanum (Decapoda: Palaemonidae) with aquaculture and conservation purposes

Yuneisy Milagro Agüero Fernández MIRIAM VICTORIA MARTIN MANZO MARITZA LOURDES SOBERANES YEPIZ Marcelo Ulises García Guerrero Yuniel Méndez Martínez Luis Hector Hernandez Hernandez Laura S López Greco Edilmar Cortés Jacinto (2022, [Artículo])

"Where good management practices on aquaculture are mandatory. The economic and ecological importance of prawns of the Genus Macrobrachium cause an impact at a global level involving economic, academic and social aspects. Macrobrachium americanum appears as one of the genus species with high nutritional value and an economic demand in the national and international markets, as well as a vital income for fisherman and producers of this species. For researchers, it is a challenge to find solutions to culture and propose conservation measures for M. americanum with emphasis on development, nutrition and reproduction. Although there are scientific studies supporting the economic importance of this species, our knowledge about its cultivation, reproduction and conservation is limited. This paper summarizes the latest studies made in cooperation with M. americanum in research lead by the Centro de Investigaciones Biológicas del Noroeste, Mexico. After several years of continuous research, it is considered that those efforts have produced useful information for the sustainable exploitation, conservation and basic management practices of this species."

Freshwater ecosystem, growth rate, native prawn species, conservation, sustainable fishing BIOLOGÍA Y QUÍMICA CIENCIAS DE LA VIDA BIOLOGÍA ANIMAL (ZOOLOGÍA) ECOLOGÍA ANIMAL ECOLOGÍA ANIMAL

Habitability conditions for floods: the case of Tuxtla Gutiérrez, Chiapas, Mexico

MARCELINO GARCIA BENITEZ Saul Nucamendi Hernandez Omar Ávila Flores (2022, [Artículo, Artículo])

At present, there are changes in the environment that favor the presence of extreme climatic phenomena such as floods, this exposure implies that the populations of urban areas suffer effects on their material assets, which limits their capacity for individual and / or family development. Given the lack of local territorial planning, the establishment of colonies was allowed on the banks of the Sabinal river and its tributaries that present episodes of flooding during the rainy season (Sistema Municipal de Protección Civil, 2015).

 

The study evaluates the habitability conditions of the urban population exposed to flooding, the city of Tuxtla Gutiérrez, Chiapas is taken as a reference, since historically it is a recurring problem during the summer. The methodology interrelates geostatistical, spatial and cartographic databases with hemerographic information sources based on the review of the literature for the construction of the general index, determined in dimensions that group social, economic, educational aspects, availability of basic services, goods with those that count the dwellings and their accessibility, etc., on a geographical scale of Urban Geostatistical Areas (AGEB).

 

The results obtained generated an index on the distribution of habitability conditions by urban Ageb, they are interrelated with spatial data on floods and their relationship with Sustainable Development Goal 11 (ODS), which proposes to improve infrastructure conditions in cities and towns. sustainable communities so that the inequality originated among the population exposed to future extreme flood events that occur in the different areas that make up the city is reduced.

Habitability conditions floods Sustainable Development Goals urban Ageb city of Tuxtla Gutiérrez, Chiapas AGEB urbana ciudad de Tuxtla Gutiérrez, Chiapas condiciones de habitabilidad inundaciones CIENCIAS SOCIALES CIENCIAS SOCIALES

Comparison of Different Classifiers and the Majority Voting Rule for the Detection of Plum Fruits in Garden Conditions.

Razieh Pourdarbani Sajad Sabzi Mario Hernández Hernández José Luis Hernández-Hernández Ginés García_Mateos Davood Kalantari José Miguel Molina Martínez (2019, [Artículo])

Color segmentation is one of the most thoroughly studied problems in agricultural applications of remote image capture systems, since it is the key step in several different tasks, such as crop harvesting, site specific spraying, and targeted disease control under natural light. This paper studies and compares five methods to segment plum fruit images under ambient conditions at 12 different light intensities, and an ensemble method combining them. In these methods, several color features in different color spaces are first extracted for each pixel, and then the most e

ective features are selected using a hybrid approach of artificial neural networks and the cultural algorithm (ANN-CA). The features selected among the 38 defined channels were the b* channel of L*a*b*, and the color purity index, C*, from L*C*h. Next, fruit/background segmentation is performed using five classifiers: artificial neural network-imperialist competitive algorithm (ANN-ICA); hybrid artificial neural network-harmony search (ANN-HS); support vector machines (SVM); k nearest neighbors (kNN); and linear discriminant analysis (LDA). In the ensemble method, the final class for each pixel is determined using the majority voting method. The experiments showed that the correct classification rate for the majority voting method excluding LDA was 98.59%, outperforming the results of the constituent methods.

remote sensing in agriculture artificial neural network hybridization environmental conditions majority voting plum segmentation INGENIERÍA Y TECNOLOGÍA CIENCIAS TECNOLÓGICAS TECNOLOGÍA DE LOS ALIMENTOS

First report of the dagger nematodes xiphinema index and xiphinema pachtaicum on grapevine in Algeria

fouad mokrini Rachid Lahlali Abdelfattah DABABAT (2023, [Artículo])

Xiphinema pachtaicum CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA XIPHINEMA INDEX DIAGNOSIS GRAPEVINES

Effects of geostrophic kinetic energy on the distribution of mesopelagic fish larvae in the southern Gulf of California in summer/fall stratified seasons

FERNANDO CONTRERAS CATALA (2016, [Artículo])

Effects of geostrophic kinetic energy flux on the three-dimensional distribution of fish larvae of mesopelagic species (Vinciguerria lucetia, Diogenichthys laternatus, Benthosema panamense and Triphoturus mexicanus) in the southern Gulf of California during summer and fall seasons of stronger stratification were analyzed. The greatest larval abundance was found at sampling stations in geostrophic kinetic energy-poor areas (<7.5 J/m3), where the distribution of the dominant species tended to be stratified. Larvae of V. lucetia (average abundance of 318 larvae/10m2) and B. panamense (174 larvae/10m2) were mostly located in and above the pycnocline (typically ∼ 40 m depth). In contrast, larvae of D. laternatus (60 larvae/10m2) were mainly located in and below the pycnocline. On the other hand, in sampling stations from geostrophic kinetic energy-rich areas (> 21 J/m3), where mesoscale eddies were present, the larvae of the dominant species had low abundance and were spread more evenly through the water column, in spite of the water column stratification. For example, in a cyclonic eddy, V. lucetia larvae (34 larvae/10m2) extended their distribution to, at least, the limit of sampling 200 m depth below the pycnocline, while D. laternatus larvae (29 larvae/10m2) were found right up to the surface, both probably as a consequence mixing and secondary circulation in the eddy. Results showed that the level of the geostrophic kinetic energy flux affects the abundance and the three-dimensional distribution of mesopelagic fish larvae during the seasons of stronger stratification, indicating that areas with low geostrophic kinetic energy may be advantageous for feeding and development of mesopelagic fish larvae because of greater water column stability. © 2016 Contreras-Catala et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Article, autumn, Benthosema panamense, Diogenichthys laternatus, environmental factor, environmental parameters, fish, geographic distribution, geostrophic kinetic energy, hydrography, larva, nonhuman, population abundance, population dispersion, pop CIENCIAS FÍSICO MATEMÁTICAS Y CIENCIAS DE LA TIERRA CIENCIAS DE LA TIERRA Y DEL ESPACIO OCEANOGRAFÍA OCEANOGRAFÍA

Estudio de la factibilidad ambiental, desarrollo sustentable, urbano, social y legal para el desarrollo de estrategias participativas y de mediación social para la construcción de sistemas de humedales artificiales (SHA) para el saneamiento del aporte del Río Amanalco a la Presa Valle de Bravo

Ricardo Víctor López Mera Jóse luis Martínez Ruiz Eduardo López Ramírez Gemma Cristina Millán Malo Denise Soares (2018, [Documento de trabajo])

Este proyecto ha tenido como objetivo general identificar, mediante un estudio social y legal, la factibilidad de adquirir los predios donde se implementarán los sistemas de humedales artificiales, así como determinar los posibles impactos sociales asociados a su construcción, operación y mantenimiento, con el fin de proponer estrategias de mitigación y lograr la aceptación por parte de las comunidades seleccionadas en el estudio.

Humedales Factores socioeconómicos Calidad de vida Estudios de factibilidad CIENCIAS SOCIALES

Instrumentos financieros y especulación del recurso hídrico

JOSE AGUSTIN BREÑA NARANJO (2021, [Artículo])

DOI: doi.org/10.24850/b-imta-perspectivas-2021-01

En esta ocasión trataremos un tema que ha generado interés en el sector financiero pero que también ha causado controversia dentro de la comunidad hídrica: la cotización del precio futuro del agua (de California) dentro del mercado de derivados más grande del mundo, el Chicago Mercantile Exchange, cuya razón de ser da entrada a la especulación de los precios de diferentes tipos de derivados existentes, tales como los metales preciosos, los hidrocarburos, los productos agrícolas y, más recientemente, el agua. El mecanismo de operación de estos mercados financieros es a través de “contratos a futuro”, esto es, acuerdos de compra-venta que permiten a inversionistas, tanto individuales como institucionales, utilizar este instrumento para generar fluctuaciones a corto y mediano plazo con el único objetivo de obtener la mayor ganancia económica posible. Si bien la existencia de este instrumento de inversión de futuros de agua (denominado Nasdaq Veles California Water Index) es incipiente y únicamente abarca los precios de los derechos de todas las aguas superficiales y cuatro acuíferos del estado de California, EUA, es necesario comprender las posibles consecuencias ambientales, así como los impactos socio-económicos que este instrumento financiero pudiese generar en la sociedad, principalmente en los sectores de la población más vulnerable, desde un contexto de seguridad hídrica y del derecho humano al agua.

Valor del agua Opciones financieras Mercado de futuros Factores socioeconómicos CIENCIAS FÍSICO MATEMÁTICAS Y CIENCIAS DE LA TIERRA

Radiative transfer model inversion using high-resolution hyperspectral airborne imagery – Retrieving maize LAI to access biomass and grain yield

Ahmed Kayad Francelino Rodrigues Marco Sozzi Francesco Pirotti Francesco Marinello Urs Schulthess Bruno Gerard Marie Weiss (2022, [Artículo])

PROSAIL Vegetation Indices Field Variability Digital Farming CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA PRECISION AGRICULTURE MAIZE GRAIN YIELD BIOMASS VEGETATION VEGETATION INDEX

Use of remote sensing for linkage mapping and genomic prediction for common rust resistance in maize

Alexander Loladze Francelino Rodrigues Cesar Petroli Felix San Vicente Garcia Bruno Gerard Osval Antonio Montesinos-Lopez Jose Crossa Johannes Martini (2024, [Artículo])

Common Rust Rp1 Locus CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA RUSTS REMOTE SENSING VEGETATION INDEX MAIZE CHROMOSOME MAPPING

Atlas para el manejo de riesgos en grandes obras hidráulicas por efecto de eventos meteorológicos extremos: primera etapa

ISAAC BONOLA ALONSO José Alfredo González Verdugo JOSE RAUL FLORES BERRONES JAVIER AVILES LOPEZ XIANGYUE LI LIU (2011, [Documento de trabajo])

Tabla de contenido: Introducción – Búsqueda y análisis de información – Objetivo del análisis multiespectral – Justificación – Introducción al análisis multiespectral – Metodología – Análisis analógico multiespectral de las imágenes de satélite empleadas – Estructuras volcánicas – Estructuras sedimentarias – Estructuras geomorfológicas sedimentarias – Reología – Reología de la sustancia actuante – Los índices estructurales genéticos de las rocas sedimentarias – Porosidad de las rocas carbonatadas – Deslizamiento de paredes montañosas y de tierras – Conclusiones y recomendaciones – Información relevante recopilada.

Introducción – Búsqueda y análisis de información – Objetivo del análisis multiespectral – Justificación – Introducción al análisis multiespectral – Metodología – Análisis analógico multiespectral de las imágenes de satélite empleadas – Estructuras volcánicas – Estructuras sedimentarias – Estructuras geomorfológicas sedimentarias – Reología – Reología de la sustancia actuante – Los índices estructurales genéticos de las rocas sedimentarias – Porosidad de las rocas carbonatadas – Deslizamiento de paredes montañosas y de tierras – Conclusiones y recomendaciones – Información relevante recopilada.

Construcciones hidráulicas Reología Desastres naturales Factores meteorológicos Informes de proyectos INGENIERÍA Y TECNOLOGÍA