Population dynamics of the migratory fish Prochilodus lineatus in a neotropical river: the relationships with river discharge, flood pulse, El Niño and fluvial megafan behaviour
The relative importance of flood pulse dynamics and megafan behaviour for the Sábalo (Prochilodus lineatus) catches in the neotropical Pilcomayo River is studied. The Sábalo catches can mainly be explained by decreased river discharges in the preceding years resulting in smaller inundated areas duri...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Ictiologia
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| Series: | Neotropical Ichthyology |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000100014&lng=en&tlng=en |
| _version_ | 1819206876300050432 |
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| author | Marinke J. M. Stassen Max W. P. M. van de Ven Tjisse van der Heide Marco Antonio Guerrero Hiza Gerard van der Velde Alfons J. P. Smolders |
| author_facet | Marinke J. M. Stassen Max W. P. M. van de Ven Tjisse van der Heide Marco Antonio Guerrero Hiza Gerard van der Velde Alfons J. P. Smolders |
| author_sort | Marinke J. M. Stassen |
| collection | DOAJ |
| description | The relative importance of flood pulse dynamics and megafan behaviour for the Sábalo (Prochilodus lineatus) catches in the neotropical Pilcomayo River is studied. The Sábalo catches can mainly be explained by decreased river discharges in the preceding years resulting in smaller inundated areas during rainy season floods and thereby in a decreased area of feeding grounds for the fishes. The decreased river discharges and the related decline of Sábalo catches in the 1990's can be linked to the 90-95 El Niño event. In 2007 the Sábalo catches were comparable to the catches before the "El Niño" event. The connectivity (continuity) between the main river and flood plain areas, which is influenced by sedimentation processes, is also of great importance and very probably plays a more important role since the late 1990's. |
| first_indexed | 2024-12-23T05:14:34Z |
| format | Article |
| id | doaj.art-2dd86cb163ce4bf8a8d67f96e373c0dc |
| institution | Directory Open Access Journal |
| issn | 1982-0224 |
| language | English |
| last_indexed | 2024-12-23T05:14:34Z |
| publisher | Sociedade Brasileira de Ictiologia |
| record_format | Article |
| series | Neotropical Ichthyology |
| spelling | doaj.art-2dd86cb163ce4bf8a8d67f96e373c0dc2022-12-21T17:58:53ZengSociedade Brasileira de IctiologiaNeotropical Ichthyology1982-02248111312210.1590/S1679-62252010005000006S1679-62252010000100014Population dynamics of the migratory fish Prochilodus lineatus in a neotropical river: the relationships with river discharge, flood pulse, El Niño and fluvial megafan behaviourMarinke J. M. Stassen0Max W. P. M. van de Ven1Tjisse van der Heide2Marco Antonio Guerrero Hiza3Gerard van der Velde4Alfons J. P. Smolders5Radboud UniversityLos Amigos del PilcomayoRadboud University NijmegenADEPESCARadboud UniversityLos Amigos del PilcomayoThe relative importance of flood pulse dynamics and megafan behaviour for the Sábalo (Prochilodus lineatus) catches in the neotropical Pilcomayo River is studied. The Sábalo catches can mainly be explained by decreased river discharges in the preceding years resulting in smaller inundated areas during rainy season floods and thereby in a decreased area of feeding grounds for the fishes. The decreased river discharges and the related decline of Sábalo catches in the 1990's can be linked to the 90-95 El Niño event. In 2007 the Sábalo catches were comparable to the catches before the "El Niño" event. The connectivity (continuity) between the main river and flood plain areas, which is influenced by sedimentation processes, is also of great importance and very probably plays a more important role since the late 1990's.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000100014&lng=en&tlng=enSedimentationClimate changeSábaloGonadal developmentFlood Pulse Concept |
| spellingShingle | Marinke J. M. Stassen Max W. P. M. van de Ven Tjisse van der Heide Marco Antonio Guerrero Hiza Gerard van der Velde Alfons J. P. Smolders Population dynamics of the migratory fish Prochilodus lineatus in a neotropical river: the relationships with river discharge, flood pulse, El Niño and fluvial megafan behaviour Neotropical Ichthyology Sedimentation Climate change Sábalo Gonadal development Flood Pulse Concept |
| title | Population dynamics of the migratory fish Prochilodus lineatus in a neotropical river: the relationships with river discharge, flood pulse, El Niño and fluvial megafan behaviour |
| title_full | Population dynamics of the migratory fish Prochilodus lineatus in a neotropical river: the relationships with river discharge, flood pulse, El Niño and fluvial megafan behaviour |
| title_fullStr | Population dynamics of the migratory fish Prochilodus lineatus in a neotropical river: the relationships with river discharge, flood pulse, El Niño and fluvial megafan behaviour |
| title_full_unstemmed | Population dynamics of the migratory fish Prochilodus lineatus in a neotropical river: the relationships with river discharge, flood pulse, El Niño and fluvial megafan behaviour |
| title_short | Population dynamics of the migratory fish Prochilodus lineatus in a neotropical river: the relationships with river discharge, flood pulse, El Niño and fluvial megafan behaviour |
| title_sort | population dynamics of the migratory fish prochilodus lineatus in a neotropical river the relationships with river discharge flood pulse el nino and fluvial megafan behaviour |
| topic | Sedimentation Climate change Sábalo Gonadal development Flood Pulse Concept |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000100014&lng=en&tlng=en |
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