Aportaciones a la flora vascular de Sierra Nevada (Almería): el elemento murciano-almeriense

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Artemisia verlotiorum Lamotte (Asteraceae), especie alóctona invasora en Andalucía (sur de España)

Artemisia verlotiorum Lamotte (Asteraceae), an allocthonous invasive species in Andalusia (southernSpain)Palabras clave. Corología, Jaén, provincia Luso-Extremadurense, plantas invasoras, vegetación riparia.Key words. Chorology, Jaen, Luso-Extremadurensian province, invasive plants, riparian vegetation

Algunos elementos de interés en la flora edafófila de la provincia de Granada (S. España)

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Therophytic pastures of the SE Iberian: Los Filabres mountain (Oriental Andalusia, Spain)

La sierra de Los Filabres es una interesante encrucijada biogeográfica, donde existen grandes contrastes ambientales, produciéndose muchos gradientes ecológicos. Los pastizales de terófitos, tanto de la Cl. Helianthemetea como de la Cl. Ruderali-Secalietea, responden a estos cambios ecológicos y biogeográficos, mostrando una gran variabilidad. Hemos registrado la presencia de veintiuna fitocenosis (asociaciones y subasociaciones) diferentes, de las que dos son novedad sintaxonómica (Bromo-Scleranthetum burnatii ass. nova y Campanulo-Chaenorrhinetum grandiflorum ass. nova), asi como dos variantes ecológicas de la as. Eryngio-Plantaginetum ovatae.The Filabres mountain is an interesting biogeographical junction, where clear environmentals contrasts exist, with a lot of ecological gradients. The terophytic plants pastures, belong to Cl. Helianthemetea and Cl. Ruderali-Secalietea, respond to this ecological and biogeographical changes. We have record the presence of twenty one different communities (associations and subassociations), with two syntaxonomic developments (Bromo-Scleranthetum burnatii ass. nova and Campanulo-Chaenorrhinetum grandiflorum ass. nova), as well as two ecological variants from the Eryngio-Plantaginetum ovatae association

Aproximación a la checklist de los gipsófitos ibéricos

Approximation to the Iberian gypsophytes checklist. The close relationship between some kinds of soils and the flora growing on them has been long known. Gypsum soils stand as a prominent example of this relationship, since some plants exclusively grow on gypsum outcrops. Nowadays this close relationship is known as gypsophily and the plant species exhibiting it are called gypsophytes. As Cavanilles already found out in the 18th century, the Iberian flora is rich in gypsophytes. From then on many botanists have considerably enlarged the list of gypsophytes. However we still lack a more or less conclusive catalogue of the Iberian gypsophytes. Only some publications dealing with the gypsum flora or vegetation may serve as references for the drafting of a preliminary catalogue. This idea has recently inspired a preliminary list of gypsophytes which has been later enlarged with the addition of new species recorded now and then in a number of specific Floras and other works of a general scope. On the basis of this list, 12 botanists adept at gypsum flora have been asked to rank the liking of these species for gypsum soils. The gypsophilous character of 140 species have been thus ranked on a scale ranging from 1 to 5 (with 5 representing an absolute liking for gypsum soils). According to the median values, some 50 species can be considered as either absolute or preferent gypsophytes

A study of the dry forest communities in the Dominican Republic

This paper is a floristic and phytosociological study of the dry forest communities of the Dominican Republic. A total of 69 relevés in dry forest biotopes were carried out. The samples were subsequently subjected to Detrended Correspondence Analysis for the determination and study of possible groupings. The study does not cover tree formations growing on serpentines, nor the so-called semideciduous forests, peculiar to areas with higher rainfall. A total of nine phytocoenoses were identified. The most significant results led to the description of six new phytosociological associations: Simaroubetum berteroani (thorny dry forest on coastal dunes), Phyllostylo rhamnoidis-Prosopidetum juliflorae (southern Dominican disturbed dry forest), Consoleo moniliformis-Camerarietum linearifoliae (dry forest on hard limestones), Lemaireocereo hystricis-Prosopidetum juliflorae (northern Dominican disturbed dry forest), Lycio americani-Prosopidetum juliflorae (disturbed dry forest on saline soils) and Guettardo ellipticae-Guapiretum discoloris (dry forest on flat-topped hillocks in Montecristi). This is an important step forward in the phytosociological and floristic studies of the Caribbean territories.Este trabalho apresenta um estudo florístico e fitossociológico das comunidades de florestas secas da República Dominicana. Um total de 69 amostras foram obtidas pelo método relevé em biótopos florestais secos. As amostras foram posteriormente submetidas à análise de correspondência destendenciada para a determinação e estudo de possíveis agrupamentos. O estudo não abrange formações arbóreas desenvolvidas sobre serpentinitos, nem as chamadas florestas semideciduais, peculiares às áreas de maior pluviosidade. Foram identificados nove fitocenoses. Os resultados mais significativos levaram à descrição de seis novas associações fitossociológicas: Simaroubetum berteroani (floresta espinhosa seca em dunas costeiras), Phyllostylo rhamnoidis-Prosopidetum juliflorae (floresta seca perturbada do sul da República Dominicana), Consoleo moniliformis-Camerarietum linearifoliae (floresta seca sobre calcários compactos), Lemaireocereo hystricis-Prosopidetum juliflorae (floresta seca perturbada do norte da República Dominicana), Lycio americani-Prosopidetum juliflorae (floresta seca perturbada desenvolvida em solos salinos) Guettardo ellipticae-Guapiretum discoloris (floresta seca em colinas de topo achatado em Montecristi). O trabalho realizado representa um importante avanço nos estudos fitossociológicos e florísticos dos territórios do Caribe.This research paper was possible thanks to the sponsorship of the Agencia Española de Cooperación Internacional para el Desarrollo (AECID), under the auspices of the Ministerio de Asuntos Exteriores y de Cooperación de España, which funded the project (cod. A/3499/05)

Flora y vegetación de las sierras de Alfacar y Víznar, La Yedra y Huétor

Se estudia las comunides fitosociológicas más representativas de estas sierras y se acompaña un catalogo de 840 taxones donde se indica corología sinonimias coordenadas utm y comentarios taxonómicos y ecológicos de cada uno de ellosUniv. Granada, Facultad de Ciencias. Leída el 27-11-197

Contribución al estudio fitosociológico de las Sierras del Alfacar y Huétor (Granada-España)

The main communities of the Alfacar and Huétor mountains are described, according to the phytosociological method, establishing as new the following associations: Cytiso-Adenocarpetum decorticantis and Saxifrago-Teucrietum rotundifoliiSe describen las comunidades vegetales más importantes de las Sierras de Alfacar y Huétor (Granada), estudiadas según el método fitosociológico, estableciendo como nuevas las asociaciones: Cytiso-Adtnocarpetum decorticantis y Saxifrago-Teucrietum rotundifolii