Essays about: "amphipod"

Found 5 essays containing the word amphipod.

  1. 1. Spatial and temporal variations in stable isotope signatures (δ13C and δ15N) of the gammarids and the common carp in the southern coast of the Caspian Sea

    University essay from SLU/Dept. Of Aquatic Resources

    Author : Nazila Hajizadeh Koupayeh; [2020]
    Keywords : carbon stable isotope; Caspian sea; Cyprinus carpio; food webs; Gammarus aequicauda; nitrogen stable isotope; Pontogammarus maeoticus;

    Abstract : Despite the growing body of research on the use of stable isotope analysis in food web studies, spatial and temporal variations in stable isotope ratios of coastal communities are still poorly understood. The aim of my study is to explore how carbon and nitrogen stable isotopes of selected benthic communities vary spatially and temporally across the south of Caspian Sea. READ MORE

  3. 2. Swimming behavior and mortality of the indigenous amphipod Monoporeia affinis in presence of the invasive polychaete Marenzelleria spp. in the Baltic Sea

    University essay from Institutionen för kultur, energi och miljö

    Author : Isa Wallin; [2012]
    Keywords : ;

    Abstract : The Monoporeia affinis population has declined drastically in the Baltic Sea since 1999. In the late 1980’s, an invasive polychaete, Marenzelleria spp., established in the Baltic Sea. This experiment aimed to investigate if M. READ MORE

  4. 3. Does an evolutionary change in the water sowbug Asellus aquaticus L. alter its functional role?

    University essay from Ekologi; Tekniska högskolan

    Author : Md. Maidul Islam Choudhury; [2011]
    Keywords : Asellus aquaticus; eco-evolutionary dynamic; ecosystem process; Gammarus pulex; intra-specific; inter-specific.;

    Abstract : The ecology behind evolutionary diversification is a well studied area of research, whereas the effects of evolution on ecosystems get little attention. In line with ecological theory, evolutionary diversification of a species could influence different ecosystem aspects such as food web composition, energy flow, nutrient cycling etc. READ MORE

  5. 4. Amphipod fauna of a mesotrophic lake – the distribution of the invasive amphipod, Echinogammarus ischnus

    University essay from Fakulteten för samhälls- och livsvetenskaper

    Author : Elin Wallquist; [2007]
    Keywords : invasive; amphipod; Echinogammarus ischnus; Gammarus fasciatus; Hyalella azteca; invadera; märlkräfta;

    Abstract : Abstract In Oneida Lake, New York, USA, three species of amphipods are present: Hyalella azteca is native, Gammarus fasciatus is invasive and was first observed sometime before 1940 and Echinogammarus ischnus was introduced in 2001 in shallow water. The purpose of this study was to investigate the spatial and temporal abundance of amphipods in Oneida Lake. READ MORE

  6. 5. Sediment toxicity in River Kolbäcksån – toxicity tests with Chironomus riparius and Gammarus pulex

    University essay from SLU/Dept. of Aquatic Sciences and Assessment

    Author : Jenny Öhlander; [2003]
    Keywords : Kolbäcksån; sediment toxicity; Chironomus riparius; Gammarus pulex;

    Abstract : During a long time the river Kolbäcksån has been influenced by mining activities in the catchment area and consequently the lakes in the area have been affected by high metal discharges. The most contaminated lake in river Kolbäcksån is L. Saxen, which is situated in the upper part of the river system. READ MORE