María Altamirano Jeschke

María Altamirano Jeschke
University of Malaga | UMA · Department of Botany and Plant Physiology

PhD

About

87
Publications
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1,864
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Publications

Publications (87)
Article
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Asparagopsis (Bonnemaisoniaceae, Rhodophyta) species are distributed in most temperate and tropical waters of the world, where they are considered an iconic invader. Despite a low number of species in the genus, Asparagopsis armata and A. taxiformis are considered species complexes, revealing remarkable genetic diversity in native and introduced...
Article
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Las invasiones biológicas son una de las mayores causas de pérdida de biodiversidad. Para paliar los impactos de las especies exóticas invasoras (EEIs) que suponen una amenaza grave, se creó el Catálogo Español de Especies Exóticas Invasoras, una herramienta dinámica en su creación, pero rígida en su aplicación. Aunque sujeto a continuas modificaci...
Article
• This work constitutes the first comprehensive study of the epifaunal response to biological invasions in coralligenous habitats, which are one of the main hotspots of biodiversity in the Mediterranean. • The epifaunal community inhabiting the invasive macroalga Rugulopteryx okamurae and other dominant sessile hosts on coralligenous habitats (i.e....
Chapter
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Here we show the state of the art about biodiversity of seaweeds and seagrasses from the Alboran Sea. For this purpose, we revised the origin and biogeographical history shaping the present biodiversity of seaweeds and seagrasses, as well as the littoral landscapes dominated by these organisms. Furthermore, the locations with relevant importance fo...
Chapter
A complex geological history, a critical geographical location, and the existence of permeable biogeographical barriers at both ends of its longitudinal range, the Strait of Gibraltar and the hydrographic front between Almería and Oran, have shaped the Alboran Sea as a biogeographical entity at the crossroads between the Atlantic Ocean and the Medi...
Article
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El presente trabajo añade nuevas especies a los catálogos de algas Rhodophyceae (Conde et al., 1996b), Phaeophyceae (Flores- Moya et al., 1995a) y Chlorophyceae (Flores-Moya et al., 1995b) existentes para las costas andaluzas, aumentando de este modo el conocimiento florístico del macrofitobentos de Andalucía. La mayoría de las aportaciones procede...
Article
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The physiological plasticity of five cyanobacteria microbial mats from an extreme high temperature intertidal environment (SW Iceland) was analysed both daily and seasonally. Daily cycles under in situ natural conditions were monitored from June to October using pulse-amplitude modulated (PAM) fluorometry and pigment composition in order to study t...
Article
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Se detallan las especies de macroalgas invasoras en las costas andaluzas.
Article
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Se expone el caso del modelo de distribución realizado para la especie invasora Rugulopteryx okamurae, y se destaca su papel como herramienta para la prevención y gestión
Article
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Se resumen los aspectos tratados en la mesa redonda desarrollada en el Workshop de especies invasoras marinas.
Article
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Se muestran los resultados obtenidos en dos Proyectos de Innovación Educativa de la Universidad de Málaga (PIE10-013 y PIE13-047), cuyos principales objetivos fueron la creación de Atlas Virtuales de Prácticas de Botánica, Flora y Vegetación, y su aplicación práctica mediante cuestionarios de autoevaluación a través del Campus Virtual. Estos atlas...
Article
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Nuevas citas para la fl ora bentónica marina de las Islas Chafarinas (Mar de Alborán, Mediterráneo occidental) Keywords. Chafarinas Islands, geographical distribution, Mediterranean Sea, seaweeds. Palabras clave. Islas Chafarinas, corología, macroalgas marinas, Mediterráneo.
Article
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Catálogo de cianoprocariotas bentónicas marinas de las Islas Chafarinas (Mar de Alborán, Mediterráneo Occidental) Keywords: Chafarinas Islands, Cyanoprokariota, marine algae, Alboran Sea. Palabras clave: Islas Chafarinas, Cyanoprokariotas, algas marinas, Mar de Alborán.
Article
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Contribuciones a la flora marina bentónica de las Islas Chafarinas (Mar de Alborán, Mediterráneo Occidental)Key words. Chafarinas Islands, geographical distribution, Mediterranean Sea, seaweeds.Palabras clave. Islas Chafarinas, corología, macroalgas marinas, Mediterráneo.
Article
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The green invasive macroalgae Ulva ohnoi and U. pertusa are known for their capacity to form Green Tides across many geographic regions. Given their global ecological and economic impact, photosynthetic responses of both Ulva spp. were tested in laboratory experiments using short-term (3 h, 5 h) exposure to different temperatures (27-36 °C) and lig...
Article
This paper reports a recently discovered population of Caulerpa prolifera in the Azores (NE Atlantic), which becomes the westernmost record of this species in European waters. Morphological, anatomical and molecular characters were investigated for species recognition. The occurrence of the species in the Azores represents a northern expansion of i...
Article
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Primary production of a population of the red invasive seaweed A. taxiformis from southern Spain was assessed using a demography-based approach and studied in relation to environmental conditions. In-depth analysis of shoots biomass of different size classes revealed a population dynamic characterized by six cyclic cohorts that followed consecutive...
Article
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The mitochondrial genetic diversity, distribution and invasive potential of multiple cryptic OTUs of the red invasive seaweed Asparagopsis were assessed by studying introduced Mediterranean and Hawaiian populations. Invasive behavior of each Asparagopsis OTU was inferred from phylogeographic reconstructions, past historical demographic dynamics, re...
Article
Asparagopsis taxiformis is a rhodophycean species composed of six genetic lineages, one of which is considered a relevant invasive component of the Mediterranean flora. In the present study we describe seasonal changes of the structure and biomass of the native community associated to Asparagopsis taxiformis in Granada (Southern Spain). Native comm...
Article
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Can the reproductive traits of Asparagopsis taxiformis contribute to its success as an invader? We present the reproductive phenology of a population located in southern Spain and a quantitative study of gametophyte reproductive structures. Reproductive allocation (the proportion of biomass allocated to reproductive tissue) in different size classe...
Article
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In this study we present basic population data of the red macroalga Asparagopsis taxiformis, widely recognized as invasive in the Mediterranean Sea. A 13-month field study was carried out on a population located in southern Spain, addressing its phenology, population dynamics and demography. We further tested whether biomass variations were related...
Article
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El catálogo de las algas se ha realizado considerando las costas españolas subdivididas en cinco sectores, acorde a la nomenclatura de la Directiva Marco de Estrategia Marina de la UE, que considera cinco Demarcaciones Marinas: Noratlántica, Sudatlántica, Estrecho-Alborán, Levantino-Balear y Canaria. El catálogo contempla 1500 especies y taxones in...
Article
The daily photosynthetic performance of a natural biofilm of the extreme acidophilic Euglena mutabilis from Río Tinto (SW, Spain) under full solar radiation was analyzed by means of pulse amplitude-modulated (PAM) fluorescence measurements and metatrascriptomic analysis. Natural E. mutabilis biofilms undergo large-scale transcriptomic reprogramming...
Article
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Three different species of Caulerpa (Caulerpaceae, Chlorophyta) cooccur in the Mediterranean Sea: two of them are found at the centraleastern basin and are typically considered non aggressive components of the Lessepsian flora [(C. chemnitzia (Esper) J.V. Lamouroux and C. racemosa var. lamourouxii (Turner) Weber-van Bosse f. requienii (Montagne) We...
Article
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New records and geographical additions to the benthic marine flora of the Atlantic Iberian Peninsula: In this work, we provide new records and geographical distribution data for 22 species (10 Rhodophyta, 9 Ochrophyta and 3 Chlorophyta) of seaweeds inhabiting from the intertidal to the deep subtidal of the Atlantic Iberian. Ulva australis is a new...
Article
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Three macroalgal species belonging to Chlorophyta (Ulva rigida), Rhodophyta (Ellisolandia elongata) and Phaeophyceae (Heterokontophyta; Cystoseira tamariscifolia), naturally growing at the same shore level and representing 3 morpho-functional groups, were exposed to short-term changes in temperature under different carbon and nitrogen regimes. Expe...
Article
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Short-term effects of increasing pCO2; 380 ppm (LC) vs. 700 ppm (HC); at different nitrogen levels; 5 μM nitrate (LN) vs. 50 μM (HN); on the contents of protein, mycosporine-like amino acids (MAAs), phenolic compounds and total fatty acids, antioxidant activity, calcification and C:N ratios were analyzed in 3 eulittoral Mediterranean macroalgae wit...
Article
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Invasive species display remarkable levels of ecophysiological plasticity, which supports colonization, population establishment and fitness across their introduction range. The red seaweed genus Asparagopsis comprises genetically homogeneous invasive species (A. armata) and cryptic species complexes (A. taxiformis sensu lato) consisting of invasiv...
Article
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This work reports the first record of Desmarestia dudresnayi (Phaeophyceae, Desmarestiaceae) for Cádiz province (Southern Spain), representing the southernmost record of this deep habitat species on the North Atlantic coast. Morphological description of the specimen is provided.
Article
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Rapid identification of introduced seaweeds is crucial to support management and conservation decisions, especially when multiple cryptic lineages of high-profile invasive taxa occur sympatrically. The red seaweed genus Asparagopsis (Bonnemaisoniales, Rhodophyta) comprises two recognised morpho-species characterised by heteromorphic life cycles and...
Conference Paper
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f Biological invasions are an important element of global change, and represent the second threat in order of importance for global biodiversity. Marine macroalgae are an important component of alien species, ranging between 10 and 40% of total species (Schaffelke et al. 2006). It is known that climate change impacts on many ecological factors such...
Article
Photosynthesis versus irradiance curves and their associated photosynthetic parameters from different phototrophic biofilms isolated from an extreme acidic environment (Río Tinto, SW, Spain) were studied in order to relate them to their species composition and the physicochemical characteristics of their respective sampling locations. The results i...
Article
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Nuevas citas para la flora bentónica marina de las Islas Chafarinas (Mar de Alborán, Mediterráneo occidental)
Article
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La flora de macroalgas marinas de Andalucía se recoge en los catálogos de Flores- Moya et al. (1995a, 1995b) y Conde et al. (1996a), y las adiciones posteriores de Conde et al. (1996b), Báez et al. (2001) y Altamirano et al. (2006, 2008). En este trabajo se presentan 9 citas nuevas para Andalucía (señaladas con un asterisco), 19 citas nuevas para l...
Poster
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El litoral andaluz está sufriendo en la actualidad la invasión de una de las diez especies de macroalgas más invasoras de las costas europeas, se trata de la especie Asparagopsis taxiformis (Delile) Trevisan (Rhodophyta, Bonnemaisoniales). Esta especie presenta un ciclo de vida trigenético heteromórfico, donde la fase gametofítica es la invasora, l...
Article
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El parasitismo de nidada representa un costo de reproducción significativo; por lo tanto, la selección natural debería favorecer la evolución de defensas en el hospedero, lo cual a su vez debería favorecer la evolución de técnicas más sofisticadas por parte del parásito para superar las defensas del hospedero. Estas defensas incluyen rechazar huevo...
Article
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The invasive species Asparagopsis taxiformis (Bonnemaisoniales, Rhodophyta) on Andalusian coasts (Southern Spain): reproductive stages, new records and invaded communities. The present study provides new records from Andalusian coasts of the exotic invasive seaweed Asparagopsis taxiformis (Delile) Trevisan. These records demonstrate that A. taxifor...
Article
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Brood parasitism represents a significant cost in reproduction; thus, natural selection should favor the evolution of host defenses, which in turn may favor evolution of more sophisticated techniques by the parasite to overcome host defenses. These host defenses include egg rejection, attacking parasites near the nest, and avoiding parasitism by co...
Article
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New records for the macrophytobenthos of Andalusia (Spain). VIPalabras clave. Acrochaetium codii, Andalucía, Ceramium echionotum var. mediterraneum, corología, macroalgas marinas, Taonia atomaria f. ciliata.Key words. Acrochaetium codii, Andalusia, Ceramium echionotum var. mediterraneum, geographical distribution, seaweeds, Taonia atomaria f. cilia...
Article
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Phenotypic expression of traits is the result of complex interactions between genotype and environment. A combination of experiments and statistics based on restricted maximum likelihood (REML) procedures was utilised for estimating the proportion of genetic variability in a series of phenotypic characters (microcystin net production, cell size, da...
Article
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Traditionally, morphometrical traits are used to classify cyanobacteria. However, neither the importance of genetic factors in morphological variability nor genetic correlations between different morphometrical traits are known. Six morphometrical traits of individual cells and six morphometrical traits of colonies have been measured in 21 strains...
Article
Adaptation of Spirogyra insignis (Chlorophyceae) to growth and survival in an extreme natural environment (sulphureous waters from La Hedionda Spa, S. Spain) was analysed by using an experimental model. Photosynthesis and growth of the alga were inhibited when it was cultured in La Hedionda Spa waters (LHW), but after further incubation for several...
Article
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Acclimation to high light stress was studied in different developmental and life-history stages of Ecklonia cava (gametophytes and young sporophytes cultivated in the laboratory and old sporophytes collected in situ). Changes in optimal quantum yield (Fv/Fm), photosynthetic efficiency (α) and capacity (ETRmax), measured by pulse amplitude modulatio...
Article
A new genetic approach was developed for increasing specificity of microalgal biosensors. This method is based on the use of two different genotypes jointly to detect a given pollutant: (i) a sensitive genotype to obtain sensitivity; and (ii) a resistant mutant to obtain specificity. The method was tested by the development of a microalgal biosenso...
Article
Freshwater toxic cyanobacteria are an increasing problem to human and animal health. Control of cyanobacteria in water supply reservoirs involves the use of algaecides, such as copper sulphate, usually in a repetitive way. Repercussions of recurrent algaecide treatments on cyanobacteria population dynamics remain still unknown. We studied the adapt...
Article
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Sensitivity to ultraviolet (UV) radiation (UV-A, lambda = 315-400 nm; plus UV-B, lambda = 280-315 nm) of zygotes of the brown alga Fucus serratus L. (Phaeophyta) has been assessed through effects on growth of developing germlings. Different stages of development were distinguished by considering 5 h periods of time after fertilisation. Both the sta...
Article
Measurements of relative growth rates (RGR) of germlings of three species of Fucus (Fucales, Phaeophyceae) collected in Helgoland (North Sea, Germany) were carried out in the laboratory in order to determine the effects of different ultraviolet radiation (UVR, λ = 280–400 nm) conditions, UVR doses and temperatures. High ultraviolet-B radiation (UVB...
Article
Photosynthesis versus irradiance curves, and their photosynthetic parameters, as well as photosynthetic pigment contents and dry weight (DW):fresh weight (FW) ratios, were studied in gametophytes, young sporophytes and old sporophytes of the brown alga Ecklonia cava Kjellman. Gametophytes had the highest pigment concentrations [Chlorophyll (Chl) a,...
Article
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The effects of solar radiation and solar radiation deprived of ultraviolet radiation (λ < 395 nm) on photosynthetic performance and pigment content of the aquatic liverwort Riella helicophylla (Bory et Mont.) Mont. was investigated throughout a natural daily-light cycle, from sunrise to sunset. Photosynthetic performance was estimated by means of p...
Article
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The effects of solar irradiance on the photosynthesis of the marine angiosperm Posidonia oceanica L. Delile were investigated by means of pulse amplitude - modulated (PAM) fluorescence in the Natural Park of Cabo de Gata-Nijar, southern Spain. The study was conducted in 2 different seasons, summer (September 1996) and winter (February 1997). Daily...
Article
The effects of UV radiation (UVR) on growth of sporelings of Melobesia membranacea (Esper) Lamouroux, Lithophyllum incrustans Philippi and Mesophyllum lichenoides (Ellis) Lemoine, were investigated by culturing the algae under different doses of photosynthetically active radiation (PAR) only and PAR + UVR. Under natural conditions, the light fields...
Article
The effects of solar radiation and solar radiation deprived of ultraviolet radiation (λ < 395 nm) on photosynthetic performance and pigment content of the aquatic liverwort Riella helicophylla (Bory et Mont.) Mont. was investigated throughout a natural daily-light cycle, from sunrise to sunset. Photosynthetic performance was estimated by means of p...
Article
Full-text available
Measurements of photosynthesis, germination capacity and assessment of DNA damage were carried out in the laboratory to determine the effect of different conditions of ultraviolet (UV) and photosynthetically active radiation (PAR) on zoospores of various large brown algae collected on Spitsbergen (Svalbard, High Arctic) and Tarifa (Cadiz, southern...
Article
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Long-term effects of full-spectrum solar radiation, solar radiation without UVB, and solar radiation without total UV (UVA+UVB) radiation were studied in intertidal Ulva rigida C. Agardh (Chlorophyta). The experiment was carried out under natural conditions and at prevailing winter levels of UV radiation. Changes in relative growth rate, photosynth...
Article
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Relative growth rate, photosynthetic pigment content, and internal carbon and nitrogen levels bf Viva olivascens P.A. Dangeard, were examined on a seasonal basis under natural conditions from December 1994 to February 1996. Biotic variables were correlated with abiotic factors, including phosphate and nitrate/nitrite [(NO3 - + NO2 -)] concentration...