Results 41 to 50 of about 24,962 (249)

Efectividad biológica de pentoxamida y piroxasulfune + flutiacet metil en el control preemergente de malezas en maíz

open access: yesAIA Avances en Investigación Agropecuaria
Introducción. El maíz es un cultivo susceptible a la competencia por malezas que afectan significativamente su rendimiento (Cerrudo et al., 2012). La atrazina es el herbicida más utilizado en el control de estas malezas en maíz (Norsworthy et al., 2021).
Azul Josette Barrera-Aguirre   +2 more
doaj   +1 more source

Comparison between Different Types of Sensors Used in the Real Operational Environment Based on Optical Scanning System

open access: yesSensors, 2018
The present paper describes the experimentation in a controlled environment and a real environment using different photosensors, such as infrared light emitting diode (IRLED-as receiver), photodiode, light dependent resistor (LDR), and blue LED for the ...
Wendy Flores-Fuentes   +5 more
doaj   +1 more source

Evaluating past and future contributions of conservation programs to species recovery

open access: yesConservation Biology, EarlyView.
Abstract Impact evaluation of conservation actions is a crucial step in global efforts to curb the biodiversity crisis. Through robust impact evaluation, practitioners can assess the effectiveness of conservation strategies and optimize the use of limited resources.
Rebeca E. Young   +10 more
wiley   +1 more source

Geographic risks to functional groups of mammals and birds from habitat loss in Mexico

open access: yesConservation Biology, EarlyView.
Abstract There is a need to quantify the impact of habitat loss due to anthropogenic factors on different aspects of biodiversity, such as functional trait diversity represented by functional groups (FGs). We developed a metric to assess the weighted risk of loss of habitat for 33 FGs of mammals and 36 FGs of birds in Mexico based on potential ...
Fernando Mayani‐Parás   +4 more
wiley   +1 more source

Using Catch Data to Estimate Changes in Global Commercial Abalone Abundance

open access: yesFisheries Management and Ecology, EarlyView.
ABSTRACT Changes in global wild capture production of abalone are explored to infer potential changes in biological stocks. The study found that 77% (or 10 out of the 13) of the countries that reportedly caught abalone in the wild have experienced declines in catches between 1980 and 2023, and on aggregate catch declined by almost 83% between 1980 and ...
Douglas Crookes
wiley   +1 more source

Ruined attempt at the peninsular railway in northern district of Baja California, 1888-1892

open access: yesEstudios Fronterizos, 2011
Between July of 1891 and May 1892, the Mexican Land and Colonization Company, a British enterprise with a concession over the major part of Baja California´s wastelands, laid 27 kilometers of rail of what was to be known as the Peninsular Railway with ...
Hilarie J. Heath
doaj  

Pattern recognition applying LDA and LR to optoelectronic signals of optical scanning systems

open access: yesRevista Iberoamericana de Automática e Informática Industrial RIAI, 2020
This paper is a follow-up to previous researches already published regarding the minimization of optical-electrical noise in optical scanning systems OSS, by the implementation of computational techniques for pattern recognition generated by each ...
J. E. Miranda-Vega   +5 more
doaj   +1 more source

Environmental Drivers of Jumbo Squid During Fishery Collapse in the Gulf of California (2019–2024)

open access: yesFisheries Oceanography, EarlyView.
ABSTRACT The jumbo squid (Dosidicus gigas) is a cephalopod endemic to the eastern Pacific with significant ecological and economic importance. Its exploitation in the Gulf of California (GC) peaked in the 1990s, with catches exceeding 100,000 tons, but collapsed in 2009 and virtually disappeared by 2015, largely due to environmental changes and ...
Mario Vásquez‐Ortiz   +5 more
wiley   +1 more source

Stage‐Specific Indicators of Northern Yellowtail Rockfish (Sebastes flavidus) Recruitment in the California Current Ecosystem

open access: yesFisheries Oceanography, EarlyView.
ABSTRACT Oceanographic and ecological conditions can be used to inform forecasts and decision‐making for marine resources, but the dominant drivers of recruitment variability remain poorly understood for many fish stocks. We developed a conceptual life‐history model of the oceanographic and ecological variables that influence the recruitment of ...
Megan L. Feddern   +3 more
wiley   +1 more source

Effect of oil supplementation extracted from nontoxic purging nut (Jatropha curcas L) on carcass traits, tissue composition, muscle CLA concentration, and visceral mass of feedlot lambs

open access: yesAustral Journal of Veterinary Sciences, 2017
The effects of purging nut (Jatropha curcas, JCO) supplementation (0, 2, 4, and 6%, DM basis of diet) on carcass traits, tissue composition and conjugated linoleic acids (CLA) concentration in muscle was evaluated in twenty intact male lambs fed a ...
Alfredo Estrada-Angulo   +8 more
doaj   +1 more source

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