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Baixo Sabor LTER - Portugal
Baixo Sabor LTER - Portugal
Basic Information
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Site Name:
Baixo Sabor LTER
Site Code:
LTER_EU_PT_002
Web Address:
LTER Sabor
Country (Site Location):
Portugal
LTER Member Network:
Portugal (LTER Portugal)
Contact: Site Manager:
Pedro Beja
CIBIO-InBIO, Research Centre in BIodiversity and Genetic Resources, University of Porto
João Cabral
CITAB – Centre for the Research and Technology of Agro-Environment and Biological Sciences, University of Trás-os-Montes e Alto Douro
Keywords originating from EnvEurope Thesaurus:
birds
mammals
reptiles
ecology
aquatic ecosystems
bees
moth
macroinvertebrates
diatoms
forest ecosystems
crayfishes
fish
conservation
trophic dynamics
agriculture
water chemistry
Riparian and gallery woodland, with dominant [Alnus], [Betula], [Populus] or [Salix]
stream ecology
rivers and lakes
plant communities
community dynamics
population and community ecology
General Site Description:
The Baixo Sabor LTER site is located in north-eastern Portugal, in the region of Trás-os-Montes, within the watershed of the Sabor river (3868 km2), which drains into the Douro river. It encompasses the lower reaches of the Sabor River and the catchment of its tributaries (1590 km2), part of which were flooded in 2015 by the reservoir of the Baixo Sabor Hydroelectric Infrastructure. Research at this sites focuses on improving our understanding on the long term consequences of river damming on freshwater and adjacent terrestrial ecosystems, and how these effects interact with other socio-economic
and environmental drivers operating at scales from local (e.g., land use changes) to global (climate change, biological invasions). Elevation in the Baixo Sabor LTER site ranges between 100m (mouth of the Sabor River) and 1100m (Hills of Bornes and Nogueira). Climate is predominantly Mediterranean with continental influence. Annual rainfall ranges between about 500mm and 1000mm, and mean annual temperature ranges between about 10ºC and 16ºC. Considering the thermicity index, It, the site is mostly included in the Meso-mediterranean and Supra-mediterranean zones. Land cover is dominated (>80%)by Mediterranean oak forests and shrublands, pine plantations, olive groves and other permanent crops, and arable cropland and pastures. In terms of Phytoogeograpy, the site was classified in Lusitanean Duriensean sector and in the Terra Quente Superdistrict. The later is characterized by its climatophilous mixed forests of cork oak and juniper (Rusco aculeati-Quercetum suberis subassociation juniperetosum oxycedri ), and its subserial communities, mainly dwarf scrubs of Lavandulo-Cytisetum multiflori and broom-dominated communities of Cytiso multiflori-Retametum sphaerocarpa as forest mantle vegetation and also in progressive successional processes, or Cytiso scoparii-Retametum sphaerocarpa in regressive succession. As a first step in the degradation of cork oak woods, shrubby or woody formations of species with lustrous leaves occur (Arbutus unedo accompanied by thermophilous species like Phillyrea angustifolia, Pistacia terebinthus and Viburnum tinus, or in even more degraded stages, Erica arborea). Cork oak is frequently associated with Q. faginea. Oligotrophic therophytic grasslands are frequent, classified as Anthyllido lusitanicae-Tuberarietum guttati. On more acid and exposed soils, communities of Lavandulo sampaioanae-Cistetum populifolii can be identified. In edapho-xerophilous conditions, mainly occupying steep slopes, holm oak dominated forests, classified as Genisto hystricis-Quercetum rotundifoliae juniperetosum oxycedri, substitute the cork oak woods. In subserial stages, again broom dominated communities, in that case pertaining to Cytiso multiflori-Retametum sphaerocarpa occur, which might be substituted by extremely poor communities dominated by Cistus ladanifer. Under basiphilous conditions, dwarf scrubs of Lavandulo sampaioanae-Cistetum albidi may occur. (Holzer 2003) Bordering the margins of permanent watercourses, with marked edapho-hygrophilous conditions, riparian forest of Scrophulario scorodoniae-Alnetum glutinosae are constant, but they are restricted to very narrow strips of gallery forests, due to the topography of the mainly V-shaped river valley, with Clematis campaniflora and Scrophularia scorodonia as notable companion species. Bordering the temporary watercourses, but also the more lotic facies of permanent watercourses with strong currents, willows of Salicion salviifoliae appear. In the floodplain of Sabor river, rupicolous chamaephytic communities of Diantho laricifolii-Petrorhagietum saxifragae are frequent, with notable thermophilous traits, and a peculiar scrub community dominated by Buxus sempervirens and Erica arborea. (Holzer 2003) Most of the Baixo Sabor LTER site is included in the Rede Natura 2000, within the Special Protection Area (SPA) of the Rivers Sabor and Maçãs, classified under the European Directive 79/409/EEC, and the Sites of Community Importance (SCI) of the Rivers Sabor and Maçãs and of Morais, classified under the and 92/43/EEC. Classification of the SPA was mostly due to the populations of birds of prey, including several breeding pairs of golden eagle (Aquila chrysaetos), Bonelli’s eagle (Hieraaetus fasciatus), and Egyptian vulture (Neophron percnopterus). Classification as SCI was due to the presence of a large number of habitats and species of conservation concern, including for instance the wolf (Canis lupus) The site is mostly included in the municipalities of Torre de Moncorvo, Alfândega da Fé, Macedo de Cavaleiros and Moncorvo. Human population density in these municipalities is low (12 – 22 inhabitants / km2), and it has declined from about 25% to >50% since 1960. Over the past decades there has also been a tendency for the population to concentrate in the main urban centres. Agriculture is an important economic activity, but there is a pervasive trend for agricultural abandonment due to population declines and ageing.
UUID:
45722713-80e3-4387-a47b-82c97a6ef62b
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General Characteristics, Purpose, History
Metadata provider:
Pedro Beja
Site Status:
existing
Year Site Established:
2009
Size :
158 970.00ha
Purpose of Site :
The site was set to understand what are the long term consequences of river damming on freshwater and adjacent terrestrial ecosystems, and how these effects interact with other socio-economic and environmental drivers operating at scales from local (e.g., land use changes) to global (climate change, biological invasions)?
Research Topics:
biology
genetics
biodiversity
ecosystem diversity
species diversity
genetic diversity
chemistry
water chemistry
conservation
ecology
terrestrial ecology
population ecology
plant ecology
community ecology
successional dynamics
community dynamics
trophic dynamics
ecosystem ecology
ecosystem function
ecosystem service
animal ecology
aquatic ecology
stream ecology
lake ecology
environmental science
pollution
history
land use history
hydrology
limnology
management
agriculture
silviculture
meteorology
social sciences
archeology
sociology
Parameters:
ecosystem measure
population and community properties
community composition
diversity measure
biotic diversity
floristic diversity
age classes
changes in population size over time
species list
faunistic diversity
biotic diversity within habitat structure
Vegetation layer type and coverage
Vegetation layer structure
Vegetation layer composition
species composition
plant species composition
species diversity
species abundance measure
abundance of benthic invertebrates
abundance of birds
amphibians
plant cover
pollinisators
species group abundance
isolation
population size
species presence measure
amphibians
insects (arachnids)
micromammales
pollinisators
presence of benthic invertebrates
presence of birds
naturalness
normalized vegetation index
nutrients
dissolved nutrients
inorganic nutrients
species traits
plants traits
trees breast height diameter
tree condition
ecosystem structures
abiotic environment
abiotic heterogeneity
anthropogenic environment
habitat structure
biotic environment
disturbance property
fire severity
habitat measure
biological measure
plant height
tree measure
tree diameter
tree distribution
atmospheric measure
radiation
incoming radiation
solar radiation
net solar radiation
precipitation
precipitation intensity
wind
wind direction
wind direction (mean and gust)
wind speed
wind speed (mean and gust)
genetic measure
allele
landscape measure
elevation
land cover
land use
land use class
land use intensity
landscape composition
landscape configuration
landscape cover
landscape fragmentation
landscape connectivity
landscape metrics
patch density
patch size
topography
water measure
acidity of water
alkalinity of water
conductivity
specific conductivity
depth
water level
lake level
stage height
water quality
suspended solids
water temperature
lake temperature
river temperature
Photos
Geographic
Coordinates:
Latitude: 41.333300000000
Longitude: -6.950000000000
Download boundaries [.shp]