Faustino Miranda (1905-1964). Nuevos datos relacionados con su formación botánica en España y con su contribución a la Ficología marina.

DOSIL MANCILLA, F. J.; CREMADES UGARTE, J. & FRAGA VÁZQUEZ, X. A. 2001. Faustino Miranda (1905-1964). Nuevos datos relacionados con su formación botánica en España y con su contribución a la Ficología marina. Bot. Complutensis 25: 191-205. Se presentan aspectos relevantes poco conocidos de la actividad ficológica de Faustino Miranda, en particular de su período de formación en Francia, en donde pudo trabajar con destacados ficólogos, y de la actividad que desarrolló en la Estación de Biología marina de Marín (Pontevedra), impartiendo los primeros cursos de Ficología marina en España e investigando en la flora marina de las Rías Baixas gallegas. Estos datos subrayan la excelente preparación del ficólogo y su papel en la institucionalización de esta disciplina en España. La Guerra Civil frustró estas halagüeñas expectativas, obligando al botánico a trasladarse a México.DOSIL MANCILLA, F. J., CREMADES UGARTE, J. & FRAGA VÁZQUEZ, X. A. 2001. Faustino Miranda (1905-1964). New data about his botanical formation in Spain and his marine Phycology contribution. Bot. Complutensis 25: 191-205. Aspects bad-known of Faustino Miranda's phycological activity are developed in this paper. We analyse his formation period in France, where he could work with prominent phycologist, and the activity that Miranda developed in the Station of marine biology of Marin (Pontevedra), where he teached first phycologist course in Spain, and where he could investigate about the Galician marine flore. These dates remark his excelent preparation as phycology and his key paper in the spanish phycologist institucionalitation. The Civil War (1936-39) frustrated these hopes and Miranda must exile at Mexico. 191 F. J. Dosil Mancilla et al. Faustino Miranda (1905-1964)..

El manuscrito Plantae per Galleciam observatae de J.M.C. Lange (1818-1898)

Se da a conocer el contenido del manuscrito que J.M.C. Lange elaboró tras su visita a Galicia en 1852 y que regaló a V. López Seoane. El manuscrito se conserva en el Instituto “José Cornide” de Estudios Coruñeses (A Coruña). En el manuscrito se hace referencia a 871 táxones, repartidos en 103 familias del territorio de Galicia y León. En nuestra revisión del mismo se aportan los nombres actualmente válidos, tanto de las familias como de los nombres científicos, las localidades donde son citados y diferentes observaciones. Se realiza una comparación entre el manuscrito y las obras Pugillus plantarum y Prodromus Florae Hispanicae, fundamentalmente. Se indica, además, de manera específica, si un taxon consta en los pliegos gallegos del herbario de Willkomm, depositado en Coimbra. Finalmente, se reconstruyen los itinerarios físico y cronológico del viaje

Response of phytoplankton to enhanced atmospheric and riverine nutrient inputs in a coastal upwelling embayment

Original research paperOver the past decades, as a consequence of human activity, there was an increase in nutrient inputs to the ocean and they are expected to enhance even more in the future. Coastal areas, accounting for a significant proportion of marine primary productivity, are the most vulnerable zones to anthropogenic impacts. The response of phytoplankton communities to an increase in organic and inorganic nutrients levels from natural allochthonous sources was assessed in microcosm experiments conducted in a coastal system affected by intermittent upwelling events (Ría de Vigo, NW Iberia). Three nutrient addition experiments were performed in spring, summer and autumn, when surface water was supplemented with 5 and 10% of atmospheric and riverine matter. Pico-, nano- and microphytoplankton abundances, chlorophyll a concentration (Chl a) and primary production rates (PP) were measured and compared with those in the control seawater sample (without additions) after 48 h of incubation. Simultaneous experiments with controlled additions of inorganic and organic nutrients were also performed in order to describe the limiting nutrient for phytoplankton growth at each experiment. The composition of the matter inputs and the structure of the phytoplankton communities determined the type of response observed. Phytoplankton responses varied among seasons, being positively correlated with dissolved inorganic nitrogen (DIN) concentrations. As expected, the phytoplankton responses to external nutrient inputs were stronger under low nutrient levels (summer) than when phytoplankton was already growing in nutrient replete conditions (spring). Null and negative responses to the natural inputs were observed in autumn, which suggests that the oceanic phytoplankton advected to this coastal system during downwelling events could be occasionally inhibited by these nutrient inputs. In a future global change scenario, characterized by enhanced nutrient inputs from riverine and atmospheric origin, the response of phytoplankton communities will strongly depend on the concentration and chemical composition of these inputs and on the structure of phytoplankton communities able to respond to themSpanish Ministry of Science and Innovation (project REIMAGE CTM2011-30155); Spanish Ministry of Economy and Competitiviness (project iSmall, reference CTM2014-56119-R); Portuguese Foundation for Science and Technology (reference SFRH/BPD/188485/2015); ESF (reference JAE DOC 040) and MINECO (project FERMIO reference CTM2014-57334-JIN)Versión del edito

É o mar sempre de cor azul? Que son as mareas vermellas?

Publicad

O Laboratorio de Vigo do Instituto Español de Oceanografía (Centro Oceanográfico de Vigo)

Trabajo inédito para Album da Ciencia (Culturagalega.org) Consello da Cultura Galega.Peer reviewe

Mineralization of biogenic materials in the water masses of the South Atlantic Ocean. I: assessment and results of an optimum multiparameter analysis

En prensa

The Portugal coastal counter current off NW Spain: new insights on its biogeochemical variability

Time series of wind-stress data, AVHRR and SeaWiFS satellite images, and in situ data from seven cruises are used to assemble a coherent picture of the hydrographic variability of the seas off the Northwest Iberian Peninsula from the onset (September-October) to the cessation (February-May) of the Portugal coastal counter current (PCCC). During this period the chemistry and the biology of the shelf, slope and ocean waters between 40degrees and 43degreesN have previously been undersampled. Novel information extracted from these observations relate to: 1. The most frequent modes of variability of the alongshore coastal winds, covering event, seasonal and long-term scales; 2. The conspicuous cycling between stratification and homogenisation observed in PCCC waters, which has key implications for the chemistry and biology of these waters; 3. The seasonal evolution of nitrite profiles in PCCC waters in relation to the stratification cycle; 4. The Redfield stoichiometry of the remineralisation of organic matter in Eastern North Atlantic Central Water (ENACW)-the water mass being transported by the PCCC; 5. The separation of coastal (mesotrophic) from PCCC (oligotrophic) planktonic populations by a downwelling front along the shelf, which oscillates to and fro across the shelf as a function of coastal wind intensity and continental runoff; and 6. The photosynthetic responses of the PCCC and coastal plankton populations to the changing stratification and light conditions from the onset to the cessation of the PCCC

Brazilian Flora 2020: Leveraging the power of a collaborative scientific network

International audienceThe shortage of reliable primary taxonomic data limits the description of biological taxa and the understanding of biodiversity patterns and processes, complicating biogeographical, ecological, and evolutionary studies. This deficit creates a significant taxonomic impediment to biodiversity research and conservation planning. The taxonomic impediment and the biodiversity crisis are widely recognized, highlighting the urgent need for reliable taxonomic data. Over the past decade, numerous countries worldwide have devoted considerable effort to Target 1 of the Global Strategy for Plant Conservation (GSPC), which called for the preparation of a working list of all known plant species by 2010 and an online world Flora by 2020. Brazil is a megadiverse country, home to more of the world's known plant species than any other country. Despite that, Flora Brasiliensis, concluded in 1906, was the last comprehensive treatment of the Brazilian flora. The lack of accurate estimates of the number of species of algae, fungi, and plants occurring in Brazil contributes to the prevailing taxonomic impediment and delays progress towards the GSPC targets. Over the past 12 years, a legion of taxonomists motivated to meet Target 1 of the GSPC, worked together to gather and integrate knowledge on the algal, plant, and fungal diversity of Brazil. Overall, a team of about 980 taxonomists joined efforts in a highly collaborative project that used cybertaxonomy to prepare an updated Flora of Brazil, showing the power of scientific collaboration to reach ambitious goals. This paper presents an overview of the Brazilian Flora 2020 and provides taxonomic and spatial updates on the algae, fungi, and plants found in one of the world's most biodiverse countries. We further identify collection gaps and summarize future goals that extend beyond 2020. Our results show that Brazil is home to 46,975 native species of algae, fungi, and plants, of which 19,669 are endemic to the country. The data compiled to date suggests that the Atlantic Rainforest might be the most diverse Brazilian domain for all plant groups except gymnosperms, which are most diverse in the Amazon. However, scientific knowledge of Brazilian diversity is still unequally distributed, with the Atlantic Rainforest and the Cerrado being the most intensively sampled and studied biomes in the country. In times of “scientific reductionism”, with botanical and mycological sciences suffering pervasive depreciation in recent decades, the first online Flora of Brazil 2020 significantly enhanced the quality and quantity of taxonomic data available for algae, fungi, and plants from Brazil. This project also made all the information freely available online, providing a firm foundation for future research and for the management, conservation, and sustainable use of the Brazilian funga and flora