Alexander Wacker
YOU?
Author Swipe
View article: Winter Temperature Affects Fatty Acid Composition and Gene Expression, but Not Fat Content and Survival in a Northern Population of a Range‐Expanding Spider
Winter Temperature Affects Fatty Acid Composition and Gene Expression, but Not Fat Content and Survival in a Northern Population of a Range‐Expanding Spider Open
Species expand their geographic distribution when environmental conditions are favorable or when mutations arise that allow them to live in previously unfavorable conditions. The European wasp spider, Argiope bruennichi , has expanded its …
View article: Light spectrum matters: Interactive effects of light and nutrients on phytoplankton communities and trophic transfer
Light spectrum matters: Interactive effects of light and nutrients on phytoplankton communities and trophic transfer Open
Phytoplankton is highly sensitive to both the quantity (intensity) and quality (spectrum) of available light, due to their wide range of light‐absorbing pigments. Light is a major driver of trophic energy transfer, and while the impact of …
View article: Coadaptation shapes ecological interactions in mixotroph‐resource systems
Coadaptation shapes ecological interactions in mixotroph‐resource systems Open
Mixotrophs combining autotrophy and heterotrophy are ubiquitous in aquatic environments and significantly influence ecosystem functioning. Mixotrophs may adapt their nutritional mode in response to selection, becoming more heterotrophic or…
View article: The role of light quality and species richness in shaping phytoplankton communities
The role of light quality and species richness in shaping phytoplankton communities Open
In natural water bodies, the light spectrum changes with depth, often toward a higher proportion of blue light. While spectral niche partitioning and functional redundancy are important concepts, our understanding of how light spectrum cha…
View article: Nocturnal sucrose does not reflect the hydrogen isotope composition of transitory starch in leaves as expected
Nocturnal sucrose does not reflect the hydrogen isotope composition of transitory starch in leaves as expected Open
The hydrogen isotope composition ( δ 2 H) of cellulose is inherently linked to that of sucrose synthesized in leaves. Daytime sucrose is synthesized from triose phosphates produced by the Calvin‐Benson‐Bassham cycle, while nighttime sucros…
View article: Winter temperature effects in a cold-adapted northern population of a range-expanding spider: survival, energy stores, and differential gene expression
Winter temperature effects in a cold-adapted northern population of a range-expanding spider: survival, energy stores, and differential gene expression Open
Species expand their spatial distribution when environmental conditions are favorable or when mutations arise that allow them to live in previously unfavorable conditions. The European wasp spider, Argiope bruennichi , is known to have exp…
View article: Ingestion and respiration rates of a common coastal mysid respond differently to diurnal temperature fluctuation
Ingestion and respiration rates of a common coastal mysid respond differently to diurnal temperature fluctuation Open
Animals face strong environmental variability even on short time scales particularly in shallow coastal habitats, forcing them to permanently adjust their metabolism. Respiration rates of aquatic ectotherms are directly influenced by water…
View article: Growth and fatty acid composition of pikeperch (Sander lucioperca L., 1758) larvae under altered feeding protocol including the copepod Apocyclops panamensis (Marsh, 1913)
Growth and fatty acid composition of pikeperch (Sander lucioperca L., 1758) larvae under altered feeding protocol including the copepod Apocyclops panamensis (Marsh, 1913) Open
Alternative live feeds for small and sensitive fish early life stages such as pikeperch ( Sander lucioperca L., 1758) can improve the larval quantity, quality and performance in aquaculture. Therefore, this study evaluated the cyclopoid co…
View article: Omega-3 versus Omega-6: Are We Underestimating the Ecological Significance of Arachidonic Acid in Aquatic Systems?
Omega-3 versus Omega-6: Are We Underestimating the Ecological Significance of Arachidonic Acid in Aquatic Systems? Open
The long-chain polyunsaturated fatty acids (PUFA) eicosapentaenoic acid (EPA, ω-3, or n-3) and arachidonic acid (ARA, ω-6 or n-6) are known to have distinct physiological functions, yet can both support growth and reproduction of consumers…
View article: Data from Glucocorticoid-Induced Tumor Necrosis Factor Receptor–Related Protein Ligand Subverts Immunosurveillance of Acute Myeloid Leukemia in Humans
Data from Glucocorticoid-Induced Tumor Necrosis Factor Receptor–Related Protein Ligand Subverts Immunosurveillance of Acute Myeloid Leukemia in Humans Open
The reciprocal interaction of tumor cells with the immune system is influenced by various members of the tumor necrosis factor (TNF)/TNF receptor (TNFR) family, and recently, glucocorticoid-induced TNFR-related protein (GITR) was shown to …
View article: Data from Glucocorticoid-Induced Tumor Necrosis Factor Receptor–Related Protein Ligand Subverts Immunosurveillance of Acute Myeloid Leukemia in Humans
Data from Glucocorticoid-Induced Tumor Necrosis Factor Receptor–Related Protein Ligand Subverts Immunosurveillance of Acute Myeloid Leukemia in Humans Open
The reciprocal interaction of tumor cells with the immune system is influenced by various members of the tumor necrosis factor (TNF)/TNF receptor (TNFR) family, and recently, glucocorticoid-induced TNFR-related protein (GITR) was shown to …
View article: Supplementary Figure 1 from Glucocorticoid-Induced Tumor Necrosis Factor Receptor–Related Protein Ligand Subverts Immunosurveillance of Acute Myeloid Leukemia in Humans
Supplementary Figure 1 from Glucocorticoid-Induced Tumor Necrosis Factor Receptor–Related Protein Ligand Subverts Immunosurveillance of Acute Myeloid Leukemia in Humans Open
Supplementary Figure 1 from Glucocorticoid-Induced Tumor Necrosis Factor Receptor–Related Protein Ligand Subverts Immunosurveillance of Acute Myeloid Leukemia in Humans
View article: Supplementary Figure 1 from Glucocorticoid-Induced Tumor Necrosis Factor Receptor–Related Protein Ligand Subverts Immunosurveillance of Acute Myeloid Leukemia in Humans
Supplementary Figure 1 from Glucocorticoid-Induced Tumor Necrosis Factor Receptor–Related Protein Ligand Subverts Immunosurveillance of Acute Myeloid Leukemia in Humans Open
Supplementary Figure 1 from Glucocorticoid-Induced Tumor Necrosis Factor Receptor–Related Protein Ligand Subverts Immunosurveillance of Acute Myeloid Leukemia in Humans
View article: Effect of microalgae diets on population performance and fatty acids composition of Apocyclops panamensis (Marsh, 1913) (Cyclopoida, Copepoda)
Effect of microalgae diets on population performance and fatty acids composition of Apocyclops panamensis (Marsh, 1913) (Cyclopoida, Copepoda) Open
The microalgae effect on population performance and fatty acid composition of Apocyclops panamensis was studied in two independent experiments (E), with starting densities of 4,000 (E1) and 8,000 nauplii L-1 (E2). In both experiments, cope…
View article: Interactive effects of nitrogen and phosphorus on growth and stoichiometry of lake phytoplankton
Interactive effects of nitrogen and phosphorus on growth and stoichiometry of lake phytoplankton Open
Phytoplankton responses to nutrient enrichment are often assumed to be universal, but in practice they can significantly vary because the effect size to an increased supply of one nutrient may depend on the availability of the other. Here,…
View article: Pikeperch larviculture (<i>Sander lucioperca</i> [L., 1758]) with <i>Brachionus plicatilis</i> (Mueller, 1786) (Rotifera) and <i>Apocyclops panamensis</i> (Marsh, 1913) (Copepoda)
Pikeperch larviculture (<i>Sander lucioperca</i> [L., 1758]) with <i>Brachionus plicatilis</i> (Mueller, 1786) (Rotifera) and <i>Apocyclops panamensis</i> (Marsh, 1913) (Copepoda) Open
The effect of live feed diets containing Brachionus plicatilis (B) and Apocyclops panamensis (A) was investigated on pikeperch larval survival, growth, and fatty acid composition in two experiments (E1 and E2). Up to six different diets we…
View article: Data from "Ingestion and respiration rates of a common coastal mysid respond differently to diurnal temperature fluctuation"
Data from "Ingestion and respiration rates of a common coastal mysid respond differently to diurnal temperature fluctuation" Open
Data from "Ingestion and respiration rates of a common coastal mysid respond differently to diurnal temperature fluctuation". "README" explains the files, "Data" contains the data set and "Data_analyses" contains the codes for statistical …
View article: Data from "Ingestion and respiration rates of a common coastal mysid respond differently to diurnal temperature fluctuation" (Brinkop et al.)
Data from "Ingestion and respiration rates of a common coastal mysid respond differently to diurnal temperature fluctuation" (Brinkop et al.) Open
Data from "Ingestion and respiration rates of a common coastal mysid respond differently to diurnal temperature fluctuation". "README" explains the files, "Data" contains the data set and "Data_analyses" contains the codes for statistical …
View article: Dietary sterol availability modulates heat tolerance of <i>Daphnia</i>
Dietary sterol availability modulates heat tolerance of <i>Daphnia</i> Open
The increasing frequency and intensity of summer heatwaves are pushing freshwater zooplankton towards their upper thermal tolerance limits. At the same time, higher temperatures and prolonged water column stratification can favour the domi…
View article: Photosynthetic activity in both algae and cyanobacteria changes in response to cues of predation
Photosynthetic activity in both algae and cyanobacteria changes in response to cues of predation Open
A plethora of adaptive responses to predation has been described in microscopic aquatic producers. Although the energetic costs of these responses are expected, with their consequences going far beyond an individual, their underlying molec…
View article: Thermal Fluctuations Yield Sex-Specific Differences of Ingestion Rates of the Littoral Mysid Neomysis integer
Thermal Fluctuations Yield Sex-Specific Differences of Ingestion Rates of the Littoral Mysid Neomysis integer Open
Shallow aquatic environments are characterized by strong environmental variability. For ectotherms, temperature is the main driver of metabolic activity, thus also shaping performance. Ingestion rates in mysids are fast responses, influenc…
View article: A sterol-mediated gleaner–opportunist trade-off underlies the evolution of grazer resistance to cyanobacteria
A sterol-mediated gleaner–opportunist trade-off underlies the evolution of grazer resistance to cyanobacteria Open
The human-caused proliferation of cyanobacteria severely impacts consumers in freshwater ecosystems. Toxicity is often singled out as the sole trait to which consumers can adapt, even though cyanobacteria are not necessarily toxic and the …
View article: Ecological impacts of photosynthetic light harvesting in changing aquatic environments: A systematic literature map
Ecological impacts of photosynthetic light harvesting in changing aquatic environments: A systematic literature map Open
Underwater light is spatially as well as temporally variable and directly affects phytoplankton growth and competition. Here we systematically (following the guidelines of PRISMA‐EcoEvo) searched and screened the published literature resul…
View article: More Light Please: Daphnia Benefit From Light Pollution by Increased Tolerance Toward Cyanobacterial Chymotrypsin Inhibitors
More Light Please: Daphnia Benefit From Light Pollution by Increased Tolerance Toward Cyanobacterial Chymotrypsin Inhibitors Open
Cryptochromes are evolutionary ancient blue-light photoreceptors that are part of the circadian clock in the nervous system of many organisms. Cryptochromes transfer information of the predominant light regime to the clock which results in…
View article: Phenotypic Diversity and Plasticity of Photoresponse Across an Environmentally Contrasting Family of Phytoflagellates
Phenotypic Diversity and Plasticity of Photoresponse Across an Environmentally Contrasting Family of Phytoflagellates Open
Organisms often employ ecophysiological strategies to exploit environmental conditions and ensure bio-energetic success. However, the many complexities involved in the differential expression and flexibility of these strategies are rarely …
View article: Evaluating the relevance of species sorting and physiological plasticity of phytoplankton communities grown in a multifactor environment
Evaluating the relevance of species sorting and physiological plasticity of phytoplankton communities grown in a multifactor environment Open
The two important mechanisms influencing the response of phytoplankton communities to alterations of abiotic factors in their environment are difficult to distinguish: species sorting resulting from a change in interspecific competitive pr…
View article: Phytoplankton Community Responses to Interactions Between Light Intensity, Light Variations, and Phosphorus Supply
Phytoplankton Community Responses to Interactions Between Light Intensity, Light Variations, and Phosphorus Supply Open
In a changing world, phytoplankton communities face a large variety of challenges including altered light regimes. These alterations are caused by more pronounced stratification due to rising temperatures, enhanced eutrophication, and brow…
View article: Inter- and intraspecific differences in rotifer fatty acid composition during acclimation to low-quality food
Inter- and intraspecific differences in rotifer fatty acid composition during acclimation to low-quality food Open
Biochemical food quality constraints affect the performance of consumers and mediate trait variation among and within consumer species. To assess inter- and intraspecific differences in fatty acid retention and conversion in freshwater rot…
View article: Plant–soil feedback effects altered by aboveground herbivory explain plant species abundance in the landscape
Plant–soil feedback effects altered by aboveground herbivory explain plant species abundance in the landscape Open
Relatively little is known about how plant–soil feedbacks (PSFs) may affect plant growth in field conditions where factors such as herbivory may be important. Using a potted experiment in a grassland, we measured PSFs with and without abov…