Search results for "Macoma balthica"
showing 3 items of 3 documents
Seasonal dynamics of biomarkers in infaunal clam Macoma balthica from the Gulf of Riga (Baltic Sea)
2014
Abstract Biomarkers are often regarded as “early warning” signals of environmental pollution; however seasonal changes are mentioned as one of the most important factor that influences the activity of biomarkers. The aim of our study was to assess the importance of seasonal variation of selected contaminant biomarkers in Macoma balthica to provide background information for further environmental surveys in the Gulf of Riga. Seasonal variation of biomarkers (acetylcholinesterase (AChE), catalase (CAT), glutathione reductase (GR) and glutathione- S -transferase (GST)) was measured in infaunal clam M . balthica from the southern part of the Gulf of Riga. The majority of biomarkers (GST, CAT an…
Baltijas plakangliemenes Macoma balthica populācijas ģenētiskās daudzveidības analīze Rīgas jūras līča piekrastē
2015
Bakalaura darbā pētīta baltijas plakangliemeņu (Macoma balthica) populācijas ģenētiskā daudzveidība Rīgas jūras līča piekrastes zonā. Izmantojot iPBS (inter - Primer Binding Sequences) metodi veikta 12 dažādu atradņu gliemeņu ģenētiskās daudzveidības analīze. PCR amplifikācijas produkti, pēc reakcijas ar diviem praimeriem (2232 un 2394), tika analizēti agarozes gēlā. Kopā tika konstatēti 38lokusi. Darbā analizētajiem paraugiem konstatēts augsts polimorfisma līmenis. Salīdzinot atradnes savā starpā, polimorfu lokusu skaits - 22 (59 %). Ģenētiskā līdzība visām populācijām ir augstāka par 88 %. Iegūtie dati tika matemātiski apstrādāti ar POPGENE un NTSYS programmnodrošinājumu.
Data from: Interactive effects between physical forces and ecosystem engineers on seed burial: a case study using Spartina anglica
2015
Seed burial (i.e. vertical seed dispersal) has become increasingly valued for its relevance for seed fate and plant recruitment. While ecosystem engineers have been generally considered as the most important drivers of seed burial, the role of physical forces, such as wind or water flow, has been largely overlooked. Using tidal habitats as a model system, and a combination of flume and mesocosm experiments, we investigated the effects of 1) currents, 2) benthic animals with different engineering activities and 3) their interplay on seed burial of a common salt marsh pioneer plant, Spartina anglica. Our results reveal that in such systems, water flow can be of equal or higher importance than…