1,072 research outputs found
Approach to climatophilous vegetation series of Serra da Estrela (Portugal)
This work contains the study results of climatophilous vegetation series from Serra da Estrela, the highest
mountain on the Portuguese mainland. Located in central-northern Portugal in the Estrelensean Sector (Carpetan-Leonese
Subprovince), the Serra da Estrela has several bioclimatic stages, mainly resulting from slope and altitude ranges:
mesomediterranean, submediterranean mesotemperate, supramediterranean, submediterranean supratemperate, and submediterranean
orotemperate. In each of these belts are observed changes in plant communities that determine variations
in terms of the vegetation series. The methodology was based on Dynamic-Catenal Phytosociology. The results show the
presence of five climatophilous series; their structural characteristics and dynamics are described in this paper: 1.
Lycopodio clavati–Junipereto nani S.; 2. Saxifrago spathularis–Betuleto celtibericae S.; 3. Holco mollis–Querco
pyrenaicae S.; 4. Arbuto–Querco pyrenaicae cytisetoso grandiflori S.; e 5. Viburno tini–Querco roboris S
New Proposals on Portuguese Vegetation (II)
As a consequence of the geobotanical studies that have been developed in west and southern areas of the Iberian Peninsula,
four new phytosociological associations are proposed, integrated in the perennial mesophytic grasslands of Stipo
giganteae-Agrostietea castellanae (Serratulo flavescentis-Celticetum giganteae, Armerio macrophyllae-Celticetum giganteae,
Centaureo rothmaleranae-Celticetum giganteae, and Centaureo coutinhoi-Dactyletum lusitanici). For each proposed
unit, besides its syntaxonomical fitting, we present its ecological diagnosis and the serial and catenal context, as well as
its patrimonial value
A new Erica lusitanica Rudolphi heathland association to the Iberian south-west
As result of several field trips following doctoral research in Marianic-Monchiquensean Sector, we describe a
new heathland named Lavandulo viridis-Ericetum lusitanici ass nova hoc loco (Genistion micrantho-anglicae, Rivas-
Martínez 1979) as a thermomediterranean to lower mesomediterranean, upper dry to humid, schistose association. The
analysis of 11 relevés, following Braun-Blanquet methodology shows the floristic identity of this new association as well
as the chorological segregation of its area of occurrence. Finally, despite these communities already being relatively well
known and although they are poor in species number, such heathlands show floristic singularity and own sinecology,
with a large and distinct geographical area of distribution, so we emphasized its integration within Atlantic wet heaths
priority habitat (⁄4020 – Annex B-I from Council Directive 92/43/EEC of 21 May 1992)
Merging traditional livelihood activities with new employment opportunities brought by ecotourism to Iona national park, Angola: rethinking social sustainability
Ecotourism activities and investment projects have been consistently increasing worldwide over
the last few decades. In this process, ecotourism has contributed to fight poverty, to create local
employment opportunities and to promote nature conservation. However, there are also plenty
examples of nature-base tourism destinations where ecotourism principles have been distorted
and negative impacts are on the rise. Therefore, studies that provide a deep understanding of
the roots and consequences of those both positive and negative impacts are needed to achieve
new higher tourism quality standards, to foster a sound local development and to promote an
integrated and sustainable national growth. To obtain information useful to contribute specific
recommendations aimed at linking tourism employers and job seekers, we have conducted a
survey addressing locals’ demographic characteristics and their engagement in traditional
livelihood activities. Data gathered from 202 respondents showed that in the largest villages
traditional livelihood activities, excepting pastoralism, tend to have little expression while the
same activities seem to play a key role in some small communities. Striking differences were
found between nomadic or semi-nomadic people and people who have been assimilated into the
western civilization and also have more sedentary life styles. Using this information and taking
in consideration some new employment opportunities brought nature-based tourism to the Iona
National Park, we have identified specific demographic profiles more suited for part-time and full-time jobs
Suitable methods for landscape evaluation and valorization: the third dimension in landscape metrics
Landscape metrics have been widely developed over the last two decades. One of the major recent developments
in landscape metrics analysis was the integration of the third dimension. Topography has an extremely important
role in ecosystems function and structure, even though the common analysis in landscape ecology only considers a planimetric
surface, which leads to some erroneous results particularly in mountain areas. In this study we tested landscape
metrics behaviour in 13 sample areas of 10,000 m2 each in several topographical conditions of Central Alentejo, Portugal.
The significance analysis of the results achieved in planimetric and three-dimensional environments is presented
The Algarve climatophilous vegetation series – Portugal: a base document to the planning, management and nature conservation Les séries de végètation climatophiles de l’Algarve - Portugal: un document de base pour la planification, gestion et conservation de la nature
This work was developed as part of PhD research devoted to the flora and vegetation of the Caldeirão and
Monchique mountains that aims to identify the vegetation climatophilous series and use them as an environmental
diagnosis of Algarve administrative province phyto-ecological subregions. Biogeographic and bioclimatic considerations
are presented, as well as the study area pedological and lithological characterization. For each of the seven
climatophilous series the dynamic and catenal behaviours, as well as the main characteristic plants that constitute the
successional stages, are given. The corresponding patrimonial value is studied
Analysis of the Cytisetea scopario-striati scrubs in the south-west-centre of the Iberian Peninsula
The statistical and phytosociological study of 255 relevés taken in the south-west of the Iberian Peninsula and
made up of our own samples and previous publications reveals how close these relevés, previously ascribed to different
syntaxa, really are. Our re-arrangement of the data leads us to propose for the territory the 15 associations already published
and three new ones, namely: Genisto floridae-Adenocarpetum argyrophylli ass. nova hoc loco, Cytisetum bourgaei-
eriocarpi nova, Lavandulo viridis-Cytisetum striati ass. nova hoc. loco. We also suggest a name correction,
Adenocarpo anisochili-Cytisetum scoparii J.C. Costa et al. 2000 corr., and a status change, namely, Ulici latebracteati-
Cytisetum striati (Costa et al. 2000) status novo
Current state of the Prunetalia spinosae communities in the centre and south of the Iberian Peninsula (Spain, Portugal)
This paper re-examines the Rhamno-Prunetea class in the centre and south of the Iberian Peninsula, especially
in Andalusia. The paper also deals with the alliances Pruno-Rubion ulmifolii Lonicero-Berberidion hispanicae in the
south of the Iberian Peninsula, and Berberidion vulgaris (Berberidenion seroi) in the area of Cuenca. Our analysis of
225 relevés arranged in 22 phytosociological tables helped us to re-organize the available information and subsequently
propose three associations and two subassociations: Clematido vitalbae-Rosetum micranthae nova; Berberido hispanicae-
Buxetum sempervirentis nova; Roso siculae-Berberidetum hispanicae Mota nova subas. prunetosum ramburii Mota
nova; Lonicero arboreae-Rhamnetum cathartici Martínez-Parras and Molero 1983 subas. prunetosum ranburii nova. As
a result of the study, a total of 18 syntaxa with the rank of association and four with the rank of subassociation are proposed
for the south of the Iberian Peninsula
Intensive Agricultural Practices as Enhancers of the Dispersion of Invasive Species: Notification of the Observation of a Case with Robinia pseudoacacia L. in Alentejo (Southern Portugal)
Invasive forest species are a recurring problem, which in Portugal assume a somewhat mediatic role, both because of the impacts they cause on biodiversity, but also because they enhance the accumulation of high amounts of fuel load, increasing the risk of forest fires. However, in some areas of the country, such as the Alentejo (South of Portugal), the scarcity of water did not allow, until now, the dispersion and rapid growth of some of these species, namely Robinia pseudoacacia, which has always remained under control, and it was never a real problem. However, with the growth of intensive farming practices, associated with vineyards, olive groves and almond trees, water and nutrients became available, enabling this species to grow and disperse. This communication presents an observation of several sets of R. pseudoacacia specimens growing with different agricultural holdings, raising the hypothesis that intensive farming practices may, in the short term, contribute to the dispersion of invasive species in regions where they were not a problem, if the situations reported are not followed up and studies are carried out to confirm the observations described
- …