Sökning: "BENTHIC DIATOMS"
Visar resultat 1 - 5 av 14 avhandlingar innehållade orden BENTHIC DIATOMS.
1. Benthic diatoms in the Gulf of Bothnia : Community analysis and diversity
Sammanfattning : Benthic diatoms are valuable tools for biological monitoring and paleo-ecological reconstruction of past environmental conditions. This thesis aims at describing size-related properties of benthic diatoms and suggests that data assessment for community analysis can be improved by considering the importance of scale. LÄS MER
2. Benthic use of phytoplankton blooms: uptake, burial and biodiversity effects in a species-poor system
Sammanfattning : Animals living in marine sediments (the second largest habitat on earth) play a major role in global biogeochemical cycling. By feeding on organic matter from settled phytoplankton blooms they produce food for higher trophic levels and nutrients that can fuel primary production. LÄS MER
3. Benthic diatoms in lakes : environmental drivers and ecological assessment
Sammanfattning : In order to protect or improve surface waters ecosystem response to pressures needs to be quantified. Diatoms are frequently used for assessing ecological status in streams and for reconstructing water quality of lakes. However, ecological status assessment of European lakes based on extant diatom assemblages is rare. LÄS MER
4. Benthic-pelagic coupling in a changing world : Structural and functional responses of microbenthic communities to organic matter settling
Sammanfattning : Marine soft sediments form the second largest habitat on the planet. Organisms residing in this environment represent a vast reservoir of biodiversity, and play key roles in ecosystem processes. LÄS MER
5. Deposit-feeding in benthic macrofauna : Tracer studies from the Baltic Sea
Sammanfattning : A low content of organic matter, which is largely refractory in nature, is characteristic of most sediments, meaning that aquatic deposit-feeders live on a very poor food source. The food is derived mainly from sedimenting phytodetritus, and in temperate waters like the Baltic Sea, from seasonal phytoplankton blooms. LÄS MER