geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

The impact of diel vertical migration of Daphnia on phytoplankton dynamics


, : The impact of diel vertical migration of Daphnia on phytoplankton dynamics. Oecologia 146(1): 50-56

Diel vertical migration (DVM) of large zooplankton is a very common phenomenon in the pelagic zone of lakes and oceans. Although the underlying mechanisms of DVM are well understood, we lack experimental studies on the consequences of this behaviour for the zooplankton's food resource-the phytoplankton. As large zooplankton species or individuals migrate downwards into lower and darker water strata by day and upwards into surface layers by night, a huge amount of herbivorous biomass moves through the water column twice a day. This migration must have profound consequences for the phytoplankton. It is generally assumed that migration supports an enhanced phytoplankton biomass and a change in the composition of the phytoplankton community towards smaller, edible algae in the epilimnion of a lake. We tested this assumption for the first time in field experiments by comparing phytoplankton biomass and community assemblage in mesocosms with and without artificially migrating natural stocks of Daphnia hyalina. We show that DVM can enhance phytoplankton biomass in the epilimnion and that it has a strong impact on the composition of a phytoplankton community leading to an advantage for small, edible algae. Our results support the idea that DVM of Daphnia can have strong effects on phytoplankton dynamics in a lake.

US$19.90

PMID: 16007409

DOI: 10.1007/s00442-005-0176-3


Other references

Mikhailiukova, Za, 1975: Sector principle of management in collective farms. Khlopkovodsto 5 6-8

Korula, J.; Fried, J.; Weissman, M.; Greaney, G.; Liew, C.T.; Finck, E., 1989: Fatal hemorrhage from an arterio-portal-peritoneal fistula after percutaneous liver biopsy. Exsanguinating hemorrhage complicated a percutaneous needle biopsy in a 64-yr-old woman with a probable collagen vascular disease. Angiography performed before Gelfoam embolization demonstrated a hepatic arterio-portal venous-peritoneal fistula, a...

Sanaka, M.R.; Thota, P.N., 2011: Efficacy of colonoscopic polypectomy in removing large polyps. Gastrointestinal Endoscopy 72(4): 906-906

Shamraeva S.A.; Vlasova E.V., 1971: Use of tissue culture for detecting specific toxins of the causative agents of gas gangrene. Zhurnal Mikrobiologii Epidemiologii i Immunobiologii 48(12): 83-87

Lord, C., 1923: A list of the fishes of Tasmania. Papers and Proceedings of the Royal Society of Tasmania, 1922: 60-73

Bains, B.S., 1986: Technical review on the state-of-the-art of dimensional stabilization of wood products using chemical impregnation. A review covering solid wood and wood particles and concentrating on water-soluble acrylic (self-crosslinking and thermoplastic) polymers, glyoxal polymers (reactive) and mixed formulations of these two types.

Bukovinszki, A.; Götz, R.; Johansen, E.; Maiss, E.; Balázs, E., 2007: The role of the coat protein region in symptom formation on Physalis floridana varies between PVY strains. The Potato virus Y (PVY) cDNA full-length clone created by Jakab et al. [Jakab, G., Droz, E., Brigneti, G., Baulcombe, D., Malnoë, P., 1997. Infectious in vivo and in vitro transcripts from a full-length cDNA clone of PVY-N605, a Swiss necrotic i...

Furuna, T.; Nagasaki, H.; Nishizawa, S.; Sugiura, M.; Okuzumi, H.; Ito, H.; Kinugasa, T.; Hashizume, K.; Maruyama, H., 1998: Longitudinal change in the physical performance of older adults in the community. The primary purposes of this study were 1) to confirm age-related deterioration of physical performance in older adults longitudinally, and 2) to predict future functional status and mortality by initial level of physical performances. The subject...

Svenson, K.L.; Lithell, H.; Hällgren, R.; Vessby, B., 1987: Serum lipoprotein in active rheumatoid arthritis and other chronic inflammatory arthritides. II. Effects of anti-inflammatory and disease-modifying drug treatment. Serum lipids and lipoprotein patterns were prospectively analyzed in 33 previously untreated patients with active chronic inflammatory arthritides during different anti-inflammatory and disease-modifying drug regimens. Before treatment the lipopro...

Hardin, G., 1974: The message is the problem. Birth control used so it will ensure the number of children people want will not be adequate unless people want the right number of children. Contraceptive technology is nearly perfect now. Motivation toward fertility control is now needed. Even i...