Extremely shallow spawning of perch (Perca fluviatilis L.) : the roles of sheltered bays, dense semi-terrestrial vegetation and low visibility in deeper water
The roles of wind protected bays, presence of littoral vegetation and light attenuation in the water column on spawning site selection and depth of egg strands deposition by perch Perca fluviatilis was studied in Římov Reservoir, Czech Republic, in the years 2007 and 20...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2012-12-01
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| Series: | Knowledge and Management of Aquatic Ecosystems |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1051/kmae/2012026 |
| _version_ | 1818385016253579264 |
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| author | Čech M. Peterka J. Říha M. Vejřík L. Jůza T. Kratochvíl M. Draštík V. Muška M. Znachor P. Kubečka J. |
| author_facet | Čech M. Peterka J. Říha M. Vejřík L. Jůza T. Kratochvíl M. Draštík V. Muška M. Znachor P. Kubečka J. |
| author_sort | Čech M. |
| collection | DOAJ |
| description | The roles of wind protected bays, presence of littoral vegetation and light attenuation
in the water column on spawning site selection and depth of egg strands deposition by
perch Perca fluviatilis was studied in Římov Reservoir, Czech Republic,
in the years 2007 and 2011 using boat observation and SCUBA divers. The data were compared
with results from Chabařovice Lake, Czech Republic, where similar monitoring took place in
2007–2010 and 2012. In shallow water of Římov Reservoir, the density of egg strands was
significantly higher in grass bays compared to both rocky bays and the main reservoir
body. Most egg strands were deposited in water less than 0.5 m deep on reed canarygrass
Phalaris arudinacea. In year when the littoral vegetation was absent
perch were forced to spawn significantly deeper on various types of woody structures. In
Římov Reservoir, which is less vulnerable to wind, 91.1% of egg strands were spawned in
water ≤3 m deep. In contrast, in the wind exposed Chabařovice Lake, even in the
presence of littoral vegetation, 90.5% of egg strands were found at depths greater than 3
m. In Chabařovice Lake, the light penetrated to three times greater depth compared to
Římov Reservoir and, similarly, the depth limit to which 95% of egg strands were spawned
was three times greater in this lake compared to Římov Reservoir. This study is the first
contribution showing the role of water transparency in controlling the depth distribution
of perch egg strands in lakes and reservoirs. |
| first_indexed | 2024-12-14T03:31:27Z |
| format | Article |
| id | doaj.art-acb08a23305347d8ae803f33a547dce1 |
| institution | Directory Open Access Journal |
| issn | 1961-9502 |
| language | English |
| last_indexed | 2024-12-14T03:31:27Z |
| publishDate | 2012-12-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | Knowledge and Management of Aquatic Ecosystems |
| spelling | doaj.art-acb08a23305347d8ae803f33a547dce12022-12-21T23:18:45ZengEDP SciencesKnowledge and Management of Aquatic Ecosystems1961-95022012-12-0104060910.1051/kmae/2012026kmae120062Extremely shallow spawning of perch (Perca fluviatilis L.) : the roles of sheltered bays, dense semi-terrestrial vegetation and low visibility in deeper waterČech M.0Peterka J.1Říha M.2Vejřík L.3Jůza T.4Kratochvíl M.5Draštík V.6Muška M.7Znachor P.8Kubečka J.9Biology Centre, Academy of Sciences of the Czech Republic, Institute of HydrobiologyBiology Centre, Academy of Sciences of the Czech Republic, Institute of HydrobiologyBiology Centre, Academy of Sciences of the Czech Republic, Institute of HydrobiologyBiology Centre, Academy of Sciences of the Czech Republic, Institute of HydrobiologyBiology Centre, Academy of Sciences of the Czech Republic, Institute of HydrobiologyBiology Centre, Academy of Sciences of the Czech Republic, Institute of HydrobiologyBiology Centre, Academy of Sciences of the Czech Republic, Institute of HydrobiologyBiology Centre, Academy of Sciences of the Czech Republic, Institute of HydrobiologyBiology Centre, Academy of Sciences of the Czech Republic, Institute of HydrobiologyBiology Centre, Academy of Sciences of the Czech Republic, Institute of HydrobiologyThe roles of wind protected bays, presence of littoral vegetation and light attenuation in the water column on spawning site selection and depth of egg strands deposition by perch Perca fluviatilis was studied in Římov Reservoir, Czech Republic, in the years 2007 and 2011 using boat observation and SCUBA divers. The data were compared with results from Chabařovice Lake, Czech Republic, where similar monitoring took place in 2007–2010 and 2012. In shallow water of Římov Reservoir, the density of egg strands was significantly higher in grass bays compared to both rocky bays and the main reservoir body. Most egg strands were deposited in water less than 0.5 m deep on reed canarygrass Phalaris arudinacea. In year when the littoral vegetation was absent perch were forced to spawn significantly deeper on various types of woody structures. In Římov Reservoir, which is less vulnerable to wind, 91.1% of egg strands were spawned in water ≤3 m deep. In contrast, in the wind exposed Chabařovice Lake, even in the presence of littoral vegetation, 90.5% of egg strands were found at depths greater than 3 m. In Chabařovice Lake, the light penetrated to three times greater depth compared to Římov Reservoir and, similarly, the depth limit to which 95% of egg strands were spawned was three times greater in this lake compared to Římov Reservoir. This study is the first contribution showing the role of water transparency in controlling the depth distribution of perch egg strands in lakes and reservoirs.http://dx.doi.org/10.1051/kmae/2012026Římov ReservoirChabařovice LakeSCUBA divingReed canarygrass Phalaris arudinaceaGoat willow Salix capreaegg strands |
| spellingShingle | Čech M. Peterka J. Říha M. Vejřík L. Jůza T. Kratochvíl M. Draštík V. Muška M. Znachor P. Kubečka J. Extremely shallow spawning of perch (Perca fluviatilis L.) : the roles of sheltered bays, dense semi-terrestrial vegetation and low visibility in deeper water Knowledge and Management of Aquatic Ecosystems Římov Reservoir Chabařovice Lake SCUBA diving Reed canarygrass Phalaris arudinacea Goat willow Salix caprea egg strands |
| title | Extremely shallow spawning of perch (Perca fluviatilis
L.) : the roles of sheltered bays, dense semi-terrestrial vegetation and low
visibility in deeper water |
| title_full | Extremely shallow spawning of perch (Perca fluviatilis
L.) : the roles of sheltered bays, dense semi-terrestrial vegetation and low
visibility in deeper water |
| title_fullStr | Extremely shallow spawning of perch (Perca fluviatilis
L.) : the roles of sheltered bays, dense semi-terrestrial vegetation and low
visibility in deeper water |
| title_full_unstemmed | Extremely shallow spawning of perch (Perca fluviatilis
L.) : the roles of sheltered bays, dense semi-terrestrial vegetation and low
visibility in deeper water |
| title_short | Extremely shallow spawning of perch (Perca fluviatilis
L.) : the roles of sheltered bays, dense semi-terrestrial vegetation and low
visibility in deeper water |
| title_sort | extremely shallow spawning of perch perca fluviatilis l the roles of sheltered bays dense semi terrestrial vegetation and low visibility in deeper water |
| topic | Římov Reservoir Chabařovice Lake SCUBA diving Reed canarygrass Phalaris arudinacea Goat willow Salix caprea egg strands |
| url | http://dx.doi.org/10.1051/kmae/2012026 |
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