Noves contribucions a les espècies aŀlòctones de Ludwigia (Onagraceae) a Catalunya
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The 2013 Mid-Winter Waterbirds Census was held in the Ebro Delta between 7 and 30 January, thanks to the collaboration of 37 participants. The area covered included the entire delta plain and the adjacent coastal sea (over 39,000 ha).... more
The 2013 Mid-Winter Waterbirds Census was held in the Ebro Delta between 7 and 30 January, thanks to the collaboration of 37 participants. The area covered included the entire delta plain and the adjacent coastal sea (over 39,000 ha). Unlike the last two winters, all the rice fields of the northern hemidelta (9,831 ha) were flooded. A total of 96 waterbirds populations were counted, mainly waders (32 species), ducks and geese (20), herons (10), diurnal raptors (9), storks and related groups (6), grebes (4), divers (3), cranes and coots (3), gulls and terns (6), and cormorants (2). In 2013 the most common species of gulls have not been included (Black-headed Gull Larus ridibundus, Mediterranean Gull L. melanocephalus, Yellow-legged Gull L. michahellis and Lesser Black-baked Gull L. fuscus). The waterbird population in January added up to 287,121 birds, value significantly higher than the average of the last 10 years (increase of the +24.1%). The most numerous taxonomical groups have ...
Cens de la població reproductora de repicatalons ibero-oriental al delta de l'Ebre, 2011 Metodologia de cens i resultats del cens de 2006
Catalonia CORINE Habitats manual (vol. I, Introduction). Adaptation of the CORINE Biotopes Manual to Catalonia. Once the Catalan habitats were catalogued, the need to clearly establish the content and specify the boundaries for each... more
Catalonia CORINE Habitats manual (vol. I, Introduction). Adaptation of the CORINE Biotopes Manual to Catalonia. Once the Catalan habitats were catalogued, the need to clearly establish the content and specify the boundaries for each habitat logically led to the creation of a manual that would serve to interpret the data and facilitate practical recognition of the habitats. Available also at http://www.ub.edu/geoveg/en/ManualCORINE.php
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El seguiment sobre les poblacions catalanes de pteròclids portades a terme entre 1988 i 1989 han estimat una població d'entre 9-15 parelles de xurra i de 100-120 de ganga. L'evolució de la població i la distribució des de 1945... more
El seguiment sobre les poblacions catalanes de pteròclids portades a terme entre 1988 i 1989 han estimat una població d'entre 9-15 parelles de xurra i de 100-120 de ganga. L'evolució de la població i la distribució des de 1945 fins a l'actualitat indica una situació similar en el cas de la ganga, mentre que la xurra ha experimentat una davallada
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Map of Catalan Habitats. Interpretation Manual. This is the interpretation Manual of the Map of Catalan habitats, a project in which 85 sheets that totally or partially cover Catalan territory were created and digitised (1998 - 2003). The... more
Map of Catalan Habitats. Interpretation Manual. This is the interpretation Manual of the Map of Catalan habitats, a project in which 85 sheets that totally or partially cover Catalan territory were created and digitised (1998 - 2003). The key to the maps is based on the list of CORINE habitats. The map can be consulted and downloaded from internet. The manual is also available at http://www.ub.edu/geoveg/en/ManualCORINE.php