Objective: to evaluate the historical trends of clam fishery in Alvarado, Veracruz, determine current state its populations and promote incorporation aquaculture activities, conserve resource reduce negative impact fishery.
 Design/methodology/approach: data were obtained through CONAPESCA on arrival notices production from offices Veracruz. After analyzing this information, graphs trends,...

Invariant petal number is a characteristic of most flowers and is generally robust to genetic and environmental variation. We took advantage of the natural variation found in Cardamine hirsuta petal number to investigate the genetic basis of this trait in a case where robustness was lost during evolution. We used quantitative trait locus (QTL) analysis to characterize the genetic architecture o...

Algorithms for Accurate, Validated and Fast Polynomial Evaluation∗ Stef Graillat†, Philippe Langlois‡ and Nicolas Louvet§ †PEQUAN, LIP6, Université Pierre et Marie Curie, CNRS, Paris, France E-mail: [email protected] ‡DALI, ELIAUS, Université de Perpignan Via Domitia, France E-mail: [email protected] §Arénaire, LIP, INRIA, Université de Lyon, CNRS, France E-mail: [email protected]

Understanding the factors that influence the distribution of understory vegetation is important for biological conservation and forest management. We compared understory species composition by multi-response permutation procedure and indicator species analysis between plots dominated by Qinghai spruce (Picea crassifolia Kom.) and Qilian juniper (Sabina przewalskii Kom.) in coniferous forests of...

The ecological function of animal seed dispersal depends on species interactions and can be affected by drivers such as the management interventions applied to protected areas. This study was conducted in two protected areas in the Monte Desert: a fenced reserve with grazing exclusion and absence of large native mammals (the Man and Biosphere Ñacuñán Reserve; FR) and an unfenced reserve with lo...

BACKGROUND The aim of the study was to investigate knowledge and use of wild food plants in two mountain valleys separated by Mount Taibai--the highest peak of northern China and one of its biodiversity hotspots, each adjacent to species-rich temperate forest vegetation. METHODS Seventy two free lists were collected among the inhabitants of two mountain valleys (36 in each). All the studied h...