Variability of Organic Matter Processing in a Mediterranean Coastal Lagoon

International Review of Hydrobiology - Tập 89 Số 5-6 - Trang 476-483 - 2004
Margarita Menéndez, Oliver Gutiérrez-Hernández1, Neus Sanmartí1, Francisco A. Comı́n1
1Department of Ecology, University of Barcelona, Avgda Diagonal, 645. 08028 Barcelona, Spain

Tóm tắt

AbstractThe spatial variability of plant organic matter processing was studied experimentally in a shallow coastal lagoon (Tancada lagoon, average depth: 37 cm, area: 1.8 km2) in the Ebro River Delta (NE Spain). To determine the effect of hydrology and sediment characteristics on plant organic matter processing, leaves of Phragmites australis at the end of its vegetative cycle and whole plants of Ruppia cirrhosa (Petagna) Grande, just abscised, were enclosed in litter bags. Two different mesh sizes (100 μm and 2 mm) were used to study the effect of macroinvertebrates on decomposition. The bags were placed in the water column and approximately 15 cm above the sediment at 6 different locations in the lagoon. The experiment was performed twice, in autumn‐winter and spring‐summer. The effect of macroinvertebrates on decomposition rate was not significant in Tancada lagoon. Breakdown rates showed spatial differences only in spring‐summer. In the autumn‐winter experiment, the effect of strong wind masked the effects of environmental variables and hydrology on decomposition rate. In the spring‐summer experiment, characterised by high stability of the water column, dissolved inorganic nitrogen (DIN) concentration in the water column and organic matter in the sediment were the main factors determining the variability of organic matter processing. A positive relationship was calculated between P. australis decomposition rate and dissolved inorganic nitrogen in spring‐summer (r2 = 0.92, p < 0.001). (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

Từ khóa


Tài liệu tham khảo

10.4319/lo.1979.24.3.0520

Comín F.A. 1982:Seasonal change of phytoplankton in three coastal lagoons of the Ebro Delta in relation to environmental factors. –In:Lasserre P. and H.Postma(Eds.) Coastal lagoons Oceanol. Acta4: 259–267.

Chauvet E., 1988, Influence of the environment on willow leaf litter decomposition in the alluvial corridor of the Garonne river, Arch. Hydrobiol., 112, 371, 10.1127/archiv-hydrobiol/112/1988/371

Howard‐Williams C., 1981, An integrate study on littoral and pelagic primary production in a southern African coastal lake, Arch. Hydrobiol., 92, 507

10.1080/02705060.1990.9665240

Legendre P.andL.Legendre 2000:Numerical ecology. – Elselvier 853 pp.

Mann K.H., 1972, Macrophyte production and detritus food chains in coastal waters, Mem. Ist. Ital. Idrobiol., 29, 353

Mann K.H. 1975:Decomposition of marine macrophytes. –In:Anderson J. M. and A.Mac Fayden(Eds.). The role of terrestrial and aquatic organisms in decomposition processes. Blackwell Scientific Publications. Oxford: 247–267.

Menéndez M., 1989, Seasonal patterns of biomass variation of Ruppia cirrhosa (Petagna) Grande and Potamogeton pectinatus L. in a coastal lagoon, Sci. Mar., 53, 633

Menéndez M., 1989, Ruppia cirrhosa decomposition in a Mediterranean coastal lagoon as affected by macroinvertebrates, Arch. Hydrobiol., 117, 39, 10.1127/archiv-hydrobiol/117/1989/39

Menéndez M., 1990, Consumption of macrophytes by invertebrates in Tancada lagoon (NE Spain), Sci. Mar., 54, 139

Menéndez M., 1993, Decomposition of Ruppia cirrhosa (Petagna) Grande in the sediment of a coastal lagoon, Sci. Mar., 57, 15

10.1006/ecss.2000.0637

Menéndez M. D.Carlucci M.Pinna F.A.ComínandA.Basset 2003:Effect of nutrients on decomposition ofRuppia cirrhosain a shallow coastal lagoon. – Hydrobiologia in press.

10.1046/j.1365-2427.1996.00125.x

10.1007/BF03160822

10.2307/1932179

10.1016/0038-0717(75)90014-0

10.1023/A:1017038701380

10.1139/b95-398

10.2307/3566045

Valiela I. 1984:Marine ecological processes. Springer‐Verlag New York.

10.1016/0304-3770(80)90053-4

Wetzel R.G. 1975:Limnology. W. B. Saunders and Co. Philadelphia 743 pp.

Zar J.H. 1984:Biostatistical analysis. 2n ed. Prentice‐Hall. Englewood Cliffs New Jersey.

Thông tin
Thông tin xuất bản

International Review of Hydrobiology

Tập 89 Số 5-6

476-483

Thông tin tác giả