Browsing Department of Biological Sciences by Title
Now showing items 1044-1063 of 2346
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Herbivory damage but not plant disease under experimental warming is dependent on weather for three subalpine grass species
(Journal article; Peer reviewed, 2022)Both theory and prior studies predict that climate warming should increase attack rates by herbivores and pathogens on plants. However, past work has often assumed that variation in abiotic conditions other than temperature ... -
Herding mesopelagic fish by light
(Peer reviewed; Journal article, 2019)To assess organisms forming mesopelagic scattering layers in the Red Sea, we took advantage of their reactions to light. We used a remotely operated vehicle (ROV) equipped with LED lamps for herding the acoustic targets ... -
Herring (Clupea harengus) in Lindåspollene before and during spawning: spatial decisions and school dynamics
(Master thesis, 2011-06-01)Abstract This study reports on the school dynamics of a self-sustained local population of Atlantic herring (Clupea harengus) in Lindåspollene, south-western Norway, during pre-spawning and spawning, observed over a period ... -
Heterogeneous distribution of plankton within the mixed layer and its implications for bloom formation in tropical seas
(Peer reviewed; Journal article, 2015-06-11)Intensive sampling at the coastal waters of the central Red Sea during a period of thermal stratification, prior to the main seasonal bloom during winter, showed that vertical patches of prokaryotes and microplankton ... -
Heterologous production, purification and substrate usage of a variant of the marine globupain protease
(Master thesis, 2024-02-01) -
Heterotrophic nanoflagellate grazing facilitates subarctic Atlantic spring bloom development
(Peer reviewed; Journal article, 2017)The subarctic Atlantic phytoplankton spring bloom is one of the largest biological features of the ocean; however, processes initiating the bloom are still not well understood. We hypothesize that the microbial grazing ... -
The Hexactinellid Deep-Water Sponge Vazella pourtalesii (Schmidt, 1870) (Rossellidae) Copes With Temporarily Elevated Concentrations of Suspended Natural Sediment
(Journal article; Peer reviewed, 2021)Plumes of re-suspended sediment potentially smother and clog the aquiferous system of filter-feeding sponges with unknown implications for their health. For the first time, we examined the physiological responses of repeated ... -
The Hfq RNA chaperone in the deep-branching Thermotogales lineage: Attempts to reveal its biological role
(Master thesis, 2015-02-01)Bacteria frequently use small RNAs (sRNAs) as part of their regulation of gene expression at the post-transcriptional level. Many of these sRNAs have been shown to depend on the RNA chaperone protein Hfq for their regulatory ... -
Hidden in the fog: Morphological and molecular characterisation of Derogenes varicus sensu stricto (Trematoda, Derogenidae) from Sweden and Norway, and redescription of two poorly known Derogenes species
(Journal article; Peer reviewed, 2023)Derogenes varicus (Müller, 1784) is widely reported as a trematode with exceptionally low host specificity and a wide, bipolar distribution. However, several recent studies have suggested that D. varicus represents a species ... -
Hiding in the background: community-level patterns in invertebrate herbivory across the tundra biome
(Peer reviewed; Journal article, 2019)Invertebrate herbivores depend on external temperature for growth and metabolism. Continued warming in tundra ecosystems is proposed to result in increased invertebrate herbivory. However, empirical data about how current ... -
High abundances of small copepods early developmental stages and nauplii strengthen the perception of a non-dormant Arctic winter
(Journal article; Peer reviewed, 2022)The traditional view is that the Arctic polar night is a quiescent period for marine life, but recent reports of high levels of feeding and reproduction in both pelagic and benthic taxa have challenged this. We examined ... -
High Arctic Invertebrate Biogeography. Patterns and Colonization Processes since the Last Glacial Maximum
(Doctoral thesis, 2011-09-22)The biogeography of Arctic terrestrial invertebrate species, and particularly processes creating and determining patterns of species distribution, have rarely been considered as a whole, but rather on a regional basis, ... -
High CO2 concentration and iron availability determine the metabolic inventory in an Emiliania huxleyi-dominated phytoplankton community
(Journal article; Peer reviewed, 2020)Ocean acidification (OA), a consequence of anthropogenic carbon dioxide (CO2) emissions, strongly impacts marine ecosystems. OA also influences iron (Fe) solubility, affecting biogeochemical and ecological processes. We ... -
High fish density delays wound healing in Atlantic salmon (Salmo salar)
(Peer reviewed; Journal article, 2018-11-15)In this study, we look closer at how high fish densities influence wound repair mechanisms in post-smolt Atlantic salmon. The fish were wounded with a 5 mm skin punch biopsy needle and stocked at two different densities, ... -
High prevalence of Ichthyophonus sp. infections in Northeast Atlantic mackerel (Scomber scombrus)
(Journal article; Peer reviewed, 2022) -
High resolution Late-glacial and early-Holocene summer air temperature records from Scotland inferred from Chironomid assemblages
(Peer reviewed; Journal article, 2012-05-18)Lateglacial and early-Holocene mean July air temperatures have been reconstructed, using a chironomid-based inference model, from lake-sediment sequences from Abernethy Forest, in the eastern Highlands of Scotland, and ... -
High-elevation limits and the ecology of high-elevation vascular plants: legacies from Alexander von Humboldt
(Journal article; Peer reviewed, 2021)Alexander von Humboldt and Aimé Bonpland in their Essay on the Geography of Plants discuss what was known in 1807 about the elevational limits of vascular plants in the Andes, North America, and the European Alps and suggest ... -
High-quality draft genome of the methanotroph Methylovulum psychrotolerans Str. HV10-M2 isolated from plant material at a high-altitude environment
(Peer reviewed; Journal article, 2018-04-12)Here we present the genome of Methylovulum psychrotolerans strain HV10-M2, a methanotroph isolated from Hardangervidda national park (Norway). This strain represents the second of the two validly published species genus ... -
High-throughput metabarcoding of eukaryotic diversity for environmental monitoring of offshore oil-drilling activities
(Peer reviewed; Journal article, 2016-09)As global exploitation of available resources increases, operations extend towards sensitive and previously protected ecosystems. It is important to monitor such areas in order to detect, understand and remediate environmental ... -
High-value fatty acids from microalgae. Bioprospecting and outdoor cultivation at northern latitudes
(Doctoral thesis, 2018-05-11)Achieving a sustainable and cost-efficient production is imperative to establish microalgae as a new feedstock for aquaculture, where they can potentially replace the use of fish oil from wild catch as a source for the ...