Search for dissertations about: "zooplankton"

Showing result 1 - 5 of 77 swedish dissertations containing the word zooplankton.

2. 1. Zooplankton response to cyanotoxins

   University dissertation from Limnology, Department of Ecology, Lund University

   Author : Susanne Gustafsson; Lunds universitet.; Lund University.; [2007]
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Naturvetenskap; Natural science; cyanotoxins; maternal effects; algal toxins; zooplankton; tolerance; cyanobacteria;

   Abstract : Popular Abstract in Swedish Giftiga alger - kan man äta sånt?! En sammanfattning på svenska Varje sommar varna's vi för giftiga algblomningar i media. Rapporterna brukar ofta handla om havet men många insjöar, speciellt i Skåne, drabba's också av massförekomst av alger. READ MORE

4. 2. Non-indigenous zooplankton the role of predatory cladocerans and of copepods in trophic dynamics

   University dissertation from Stockholm : Systemekologiska institutionen

   Author : Marc Andersen Borg; Stockholms universitet.; [2009]
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Acartia tonsa; Bythotrephes longimanus; Cercopagis pengoi; egg production; fitness; food web changes; ingestion rates; invasive species; metabolic balance; mortality; non-indigenous zooplankton; predation impact; salinity tolerance; stable isotopes; NATURAL SCIENCES Biology Terrestrial; freshwater and marine ecology Marine ecology; NATURVETENSKAP Biologi Terrestisk; limnisk och marin ekologi Marin ekologi; marin ekologi; Marine Ecology;

   Abstract : Human-mediated introductions of non-indigenous species now threaten to homogenize the biota of the Globe, causing huge economic and ecological damage. This thesis studies the ecological role of 3 invasive planktonic crustaceans, the omnivorous copepod Acartia tonsa (western Atlantic and Indo-Pacific) and the predatory cladocerans, Cercopagis pengoi (Ponto-Caspian) and Bythotrephes longimanus (Eurasian). READ MORE

5. 3. Food Quality for Zooplankton in Humic Lakes

   University dissertation from Lund University, Ecology Department/ Limnology

   Author : Kelly Gutseit; Lunds universitet.; Lund University.; [2007]
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; limnology; Hydrobiology; marine biology; Clear water lakes; Plankton; Seston; Elements; Fatty acids; Humic lakes; Food quality; Zooplankton; limnologi; akvatisk ekologi; aquatic ecology; Marinbiologi;

   Abstract : Food quality affects growth, reproduction and community structure of zooplankton, and has implications for nutrient cycling and the transfer of energy and matter in aquatic food chains. While the issue of food quality in clear water lakes has received great recent attention, studies on food quality for zooplankton in humic lakes are scarce. READ MORE

6. 4. Spring dynamics in shallow lakes: the role of plankton, fish and macrophytes in a changing climate

   University dissertation from Lund University, Ecology Department/ Limnology

   Author : Alice Nicolle; Lunds universitet.; Lund University.; [2010]
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; zooplankton; spring; 0 fish; macrophytes; phenology; climate change; shallow lakes;

   Abstract : Shallow lakes such as Lake Krankesjön are characterized by their extended littoral zones, usually covered by submersed and emergent vegetation. In paper 1, I investigated the relationship between turbidity and macrophyte growth (Chara spp. READ MORE

7. 5. The importance of terrestrial carbon in plankton food webs

   University dissertation from Limnology, Department of Ecology, Lund University

   Author : Cesar Bolivar Daniel; Lunds universitet.; Lund University.; [2005]
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Ecology; lakes; carbon; zooplankton; Spumella elongata; Poterioochromonas malhamensis; flagellates; bacteria; stable isotopes; photochemistry; autochthonous; DOC; allochthonous; plankton; Ekologi; Hydrobiology; marine biology; aquatic ecology; limnology; Marinbiologi; limnologi; akvatisk ekologi;

   Abstract : Allochthonous substances, i.e. produced in terrestrial ecosystems, are known to fuel bacterial production in humic lakes. I observed that allochthonous carbon subsidizes bacteria even at high levels of phytoplankton biomass. READ MORE