On the population dynamics of dab,sole and flounder within bridgwater bay in the lower severn estuary,England |
| |
| Affiliation: | 1. Interdisciplinary Research Department – Field Science, Alexandru I. Cuza University of Iaşi, Romania;2. Arheoinvest Platform, Alexandru I. Cuza University of Iaşi, Romania;3. Faculty of History, Arheoinvest Platform, Alexandru I. Cuza University of Iaşi, Romania;1. Graduate School of Geography, Clark University, MA, USA;2. WSL Institute for Snow and Avalanche Research SLF, Davos, Switzerland;3. Institute of Silviculture, Department of Forest- and Soil Sciences, University of Natural Resources and Life Sciences (BOKU), Vienna, Austria;4. Adam Mickiewicz University, Faculty of Biology, Department of Plant Ecology and Environment Protection, Umultowska 89, 61-614 Poznań, Poland;5. Department of Forest Sciences, University of Helsinki, Helsinki, Finland;6. Department of Forestry and Renewable Forest Resources, University of Ljubljana, Slovenia;7. Dendrology Department, University of Forestry, 1797 Sofia, Bulgaria;8. Faculty of Forestry and Wood Sciences, Czech University of Life Sciences, Prague, Czech Republic;9. Field Station Fabrikschleichach, Biocenter, University of Würzburg, Glashüttenstraße 5, 96181 Rauhenebrach, Germany;10. Università degli Studi di Torino, DISAFA, Largo Braccini 2, 10095 Grugliasco (TO), Italy;11. Montana Institute on Ecosystems, Montana State University, Bozeman, MT, USA;12. Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Birmensdorf, Switzerland;1. Department of Ecology, Technische Universität Berlin, 12165 Berlin, Germany;2. Berlin-Brandenburg Institute of Advanced Biodiversity Research (BBIB), 14195 Berlin, Germany;1. Quercus, School of Biological Sciences, Queen’s University Belfast, Belfast, BT9 7BL, Northern Ireland, UK;2. School of Biological Sciences, Queen’s University Belfast, Belfast, BT9 7BL, Northern Ireland, UK;3. Institute for Global Food Security (IGFS), Queen’s University Belfast, Belfast, BT9 5BN, Northern Ireland, UK |
| |
| Abstract: | A ten year study of the population dynamics of the flatfish dab Limanda limanda, sole Solea solea and flounder Platichthys flesus was undertaken within Bridgwater bay in the Bristol Channel, England. Fish abundance was estimated from the rate of capture on power station intake filter screens at Hinkley Point Nuclear Power Station. The Bay was used as an 0-group nursery by all three species while flounder were alone in regularly using the area as adults. Using the coefficient of variation (CV) in annual catch as a measure of population stability these three flatfish were found to have some of the most stable populations within a fish community of 21 common species. When these species were classified according to their use of space as benthic, proximo-benthic or pelagic it was found that the benthic fish had the lowest CV values. It is argued that this stability is linked to their use of space. A notable feature was the differing seasonal occupancy of the Bay by the benthic fish which would act to reduce potential inter-specific competition. This suggests that spatial competition could only be intra-specific or against invertebrates. A search was made for biotic or physical factors correlated with year class abundance in the flatfish. The only significant correlation found was for sole, the abundance of which increased with increasing water temperature. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
