scholarly journals Additional records of non-native freshwater fishes for the Ebro River basin (Spain)

2010 ◽  
Vol 5 (3) ◽  
pp. 291-296 ◽  
Author(s):  
Rafael Miranda ◽  
Pedro Leunda ◽  
Javier Oscoz ◽  
Antonio Vilches ◽  
Ibon Tobes ◽  
...  
Keyword(s):  
River Basin ◽  
Freshwater Fishes ◽  
Ebro River

scholarly journals Spatial Modeling of Rainfall Patterns over the Ebro River Basin Using Multifractality and Non-Parametric Statistical Techniques

Water ◽  
2015 ◽  
Vol 7 (11) ◽  
pp. 6204-6227 ◽  
Author(s):  
José Valencia ◽  
Ana Tarquis ◽  
Antonio Saa ◽  
María Villeta ◽  
José Gascó
Keyword(s):  
River Basin ◽  
Spatial Modeling ◽  
Statistical Techniques ◽  
Ebro River ◽  
Rainfall Patterns ◽  
Non Parametric

Voluntary Agreement for River Regime Restoration Services in the Ebro River Basin (Spain)

2015 ◽  
pp. 365-378
Author(s):  
Carlos M. Gómez ◽  
Gonzalo Delacámara ◽  
C. Dionisio Pérez-Blanco ◽  
Marta Rodríguez
Keyword(s):  
River Basin ◽  
Voluntary Agreement ◽  
Ebro River

scholarly journals Spatialized N budgets in a large agricultural Mediterranean watershed: high loading and low transfer

2012 ◽  
Vol 9 (1) ◽  
pp. 57-70 ◽  
Author(s):  
L. Lassaletta ◽  
E. Romero ◽  
G. Billen ◽  
J. Garnier ◽  
H. García-Gómez ◽  
...  
Keyword(s):  
River Basin ◽  
Management Practices ◽  
N Fertilization ◽  
Irrigated Agriculture ◽  
N Budget ◽  
Ebro River ◽  
N Retention ◽  
Management Measures ◽  
Mediterranean Regions ◽  
Food And Feed

Abstract. Despite the particular management practices and climate characteristics of the Mediterranean regions, the literature dealing with N budgets in large catchments subjected to Mediterranean conditions is scarce. The present study aims to deepen our knowledge on the N cycle within the Ebro River Basin (NE Spain) by means of two different approaches: (1) calculating a global N budget in the Ebro River Basin and (2) calculating a series of detailed regional budgets at higher geographical resolution. N inputs and outputs were spatialized by creating a map based on the most detailed information available. Fluvial and atmospheric N export was estimated together with N retention. The Ebro River Basin annually receives a relatively high amount of new N (5118 kg N km−2 yr−1), mostly in the form of synthetic fertilizers (50%). Although it is a highly productive catchment, the net N input as food and feed import is also high (33%). Only 8% of this N is finally exported to the delta zone. Several territorial units characterized by different predominant uses (rainfed agriculture, irrigated agriculture and pastures) have differentiated N dynamics. However, due to the high density of irrigation channels and reservoirs that characterize Mediterranean catchments, N retention is very high in all of them (median value, 91%). These results indicate that problems of eutrophication due to N delivery in the coastal area may not be too severe but that high N retention values may instead lead to problems within the catchment, such as pollution of aquifers and rivers, as well as high atmospheric emissions. The most promising management measures are those devoted to reducing agricultural surpluses through a better balanced N fertilization.

Considerations for the Propagation and Conservation of Endangered Lake Suckers of the Western United States

2017 ◽  
Vol 8 (1) ◽  
pp. 301-312 ◽  
Author(s):  
Julie L. Day ◽  
Jennifer L. Jacobs ◽  
Josh Rasmussen
Keyword(s):  
United States ◽  
River Basin ◽  
Freshwater Fishes ◽  
Western United States ◽  
Numerous Species ◽  
Klamath River ◽  
Western Lake ◽  
Prevention Measure ◽  
Klamath River Basin ◽  
Anthropogenic Threats

Abstract Decades of persistent natural and anthropogenic threats coupled with competing water needs have compromised numerous species of freshwater fishes, many of which are now artificially propagated in hatcheries. Low survival upon release is common, particularly in systems with substantial nonnative predator populations. Extensive sampling for Shortnose (Chasmistes brevirostris) and Lost River Suckers (Deltistes luxatus) in the Klamath River Basin on the California–Oregon border have failed to detect any new adult recruitment for at least two decades, prompting an investigation into artificial propagation as an extinction prevention measure. A comprehensive assessment of strategies and successes associated with propagation for conservation restocking has not been performed for any Catostomid. Here, we review available literature for all western lake sucker species to inform propagation and recovery efforts for Klamath suckers and summarize the relevance of these considerations to other endangered fishes.

scholarly journals Iron chlorosis in the Ebro River basin, Spain

1992 ◽  
Vol 15 (10) ◽  
pp. 1971-1981 ◽  
Author(s):  
Manuel Sanz ◽  
Javier Cavero ◽  
Javier Abadía
Keyword(s):  
River Basin ◽  
Iron Chlorosis ◽  
Ebro River

Environmental consequences of salts exports from an irrigated landscape in the ebro river Basin, Spain

1989 ◽  
Vol 27 (1-4) ◽  
pp. 131-138 ◽  
Author(s):  
Juan Bellot ◽  
Frank Golley ◽  
M. Teresa Aguinaco
Keyword(s):  
River Basin ◽  
Ebro River ◽  
Environmental Consequences

scholarly journals Effects of water re-allocation in the Ebro river basin: A multiregional input-output and geographical analysis

2019 ◽  
Vol 241 ◽  
pp. 645-657 ◽  
Author(s):  
Miguel A. Almazán-Gómez ◽  
Rosa Duarte ◽  
Raquel Langarita ◽  
Julio Sánchez-Chóliz
Keyword(s):  
River Basin ◽  
Input Output ◽  
Ebro River ◽  
Geographical Analysis

scholarly journals A methodology to classify irrigated areas: Application to the central Ebro River Basin in Aragón (Spain)

2020 ◽  
Vol 241 ◽  
pp. 106365 ◽  
Author(s):  
N. Zapata ◽  
E. Playán ◽  
R. Castillo ◽  
Y. Gimeno ◽  
I. Oliván ◽  
...  
Keyword(s):  
River Basin ◽  
Ebro River

scholarly journals Climate change assessment for Mediterranean agricultural areas by statistical downscaling

2010 ◽  
Vol 10 (7) ◽  
pp. 1647-1661 ◽  
Author(s):  
L. Palatella ◽  
M. M. Miglietta ◽  
P. Paradisi ◽  
P. Lionello
Keyword(s):  
Climate Change ◽  
River Basin ◽  
Statistical Downscaling ◽  
Principal Component ◽  
Summer Precipitation ◽  
Ebro River ◽  
Po Valley ◽  
Apulia Region ◽  
Climate Change Assessment ◽  
Agricultural Areas

Abstract. In this paper we produce projections of seasonal precipitation for four Mediterranean areas: Apulia region (Italy), Ebro river basin (Spain), Po valley (Italy) and Antalya province (Turkey). We performed the statistical downscaling using Canonical Correlation Analysis (CCA) in two versions: in one case Principal Component Analysis (PCA) filter is applied only to predictor and in the other to both predictor and predictand. After performing a validation test, CCA after PCA filter on both predictor and predictand has been chosen. Sea level pressure (SLP) is used as predictor. Downscaling has been carried out for the scenarios A2 and B2 on the basis of three GCM's: the CCCma-GCM2, the Csiro-MK2 and HadCM3. Three consecutive 30-year periods have been considered. For Summer precipitation in Apulia region we also use the 500 hPa temperature (T500) as predictor, obtaining comparable results. Results show different climate change signals in the four areas and confirm the need of an analysis that is capable of resolving internal differences within the Mediterranean region. The most robust signal is the reduction of Summer precipitation in the Ebro river basin. Other significative results are the increase of precipitation over Apulia in Summer, the reduction over the Po-valley in Spring and Autumn and the increase over the Antalya province in Summer and Autumn.

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