GLORIA

GEOMAR Library Ocean Research Information Access

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Journals
  • Articles  (31)
  • Open Access-Papers  (31)
  • WILEY-BLACKWELL PUBLISHING  (18)
  • Russian Federal Research Institute of Fisheries and Oceanography (VNIRO)  (13)
Document type
  • Journals
  • Articles  (31)
Source
  • Open Access-Papers  (31)
Keywords
Publisher
Years
  • 1
    facet.materialart.
    Unknown
    Compositional and functional consequences of environmental change in Belgian farmland ponds (2018)
    WILEY-BLACKWELL PUBLISHING
    In:  EPIC3Freshwater Biology, WILEY-BLACKWELL PUBLISHING, 63(6), pp. 581-596, ISSN: 0046-5070
    Details
    Publication Date: 2018-11-09
    Description: 1. A resampling of 38 small farmland ponds in Belgium after 10 years revealed a high temporal species turnover for both phytoplankton and zooplankton communities, associated with substantial changes in abiotic factors, especially a reduction in total phosphorus concentration. 2. Across ponds, phytoplankton biomass decreased while evenness and richness increased between the samplings in 2003 and 2013. By contrast, the zooplankton assemblage was characterised by lower biomass, richness and evenness in 2013. Ponds experiencing larger environmental change showed stronger changes in phytoplankton richness and evenness. 3. Resource use efficiency (RUE) of zooplankton increased with greater environmental change and zooplankton evenness, which points to a switch towards species with higher RUE or greater variety in food sources in higher trophic levels. 4. As ponds are important habitats for freshwater biodiversity and ecosystems services, the strong but predictable species turnover and the opposing effects of environmental change on different trophic levels need to be embedded in conservation and management plans.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 2
    facet.materialart.
    Unknown
    Phylogenetic placement of environmental sequences using taxonomically reliable databases helps to rigorously assess dinophyte biodiversity in Bavarian lakes (Germany). (2019)
    WILEY-BLACKWELL PUBLISHING
    In:  EPIC3Freshwater Biology, WILEY-BLACKWELL PUBLISHING, pp. 1-16, ISSN: 0046-5070
    Details
    Publication Date: 2019-12-19
    Description: 1. Reliable determination of organisms is a prerequisite to explore their spatial and temporal occurrence and to study their evolution, ecology, and dispersal. In Europe, Bavaria (Germany) provides an excellent study system for research on the origin and diversification of freshwater organisms including dinophytes, due to the presence of extensive lake districts and ice age river valleys. Bavarian freshwater environments are ecologically diverse and range from deep nutrient‐poor mountain lakes to shallow nutrient‐rich lakes and ponds. 2. We obtained amplicon sequence data (V4 region of small subunit‐rRNA, c. 410 bp long) from environmental samples collected at 11 sites in Upper Bavaria. We found 186 operational taxonomic units (OTUs) associated with Dinophyceae that were further classified by means of a phylogenetic placement approach. 3. The maximum likelihood tree inferred from a well‐curated reference alignment comprised a systematically representative set of 251 dinophytes, covering the currently known molecular diversity and OTUs linked to type material if possible. Environmental OTUs were scattered across the reference tree, but accumulated mostly in freshwater lineages, with 79% of OTUs placed in either Apocalathium, Ceratium, or Peridinium, the most frequently encountered taxa in Bavaria based on morphology. 4. Twenty‐one Bavarian OTUs showed identical sequences to already known and vouchered accessions, two of which are linked to type material, namely Palatinus apiculatus and Theleodinium calcisporum. Particularly within Peridiniaceae, delimitation of Peridinium species was based on the intraspecific sequence variation. 5. Our approach indicates that high‐throughput sequencing of environmental samples is effective for reliable determination of dinophyte species in Bavarian lakes. We further discuss the importance of well‐curated reference databases that remain to be developed in the future.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 3
    facet.materialart.
    Unknown
    Decomposing multiple dimensions of stability in global change experiments (2017)
    WILEY-BLACKWELL PUBLISHING
    In:  EPIC3Ecology Letters, WILEY-BLACKWELL PUBLISHING, ISSN: 1461-023X
    Details
    Publication Date: 2017-11-14
    Description: Ecological stability is the central framework to understand an ecosystem’s ability to absorb or recover from environmental change. Recent modelling and conceptual work suggests that stability is a multidimensional construct comprising different response aspects. Using two freshwater mesocosm experiments as case studies, we show how the response to single perturbations can be decomposed in different stability aspects (resistance, resilience, recovery, temporal stability) for both ecosystem functions and community composition. We find that extended community recovery is tightly connected to a nearly complete recovery of the function (biomass production), whereas systems with incomplete recovery of the species composition ranged widely in their biomass compared to controls. Moreover, recovery was most complete when either resistance or resilience was high, the latter associated with low temporal stability around the recovery trend. In summary, no single aspect of stability was sufficient to reflect the overall stability of the system.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 4
    facet.materialart.
    Unknown
    Updating approaches to the stock assessment and calculation of recommended catch of brine shrimp and brine shrimp at the cyst stage (species of the genus Artemia) (2022)
    Russian Federal Research Institute of Fisheries and Oceanography (VNIRO) | Moscow (Russia)
    Details
    Publication Date: 2022-12-21
    Description: The proposed recommendations are seen as a logical development of research aimed at assessing the state of the resource base and catch forecasting for brine shrimp and brine shrimp at the stage of cysts for different timing. Their special feature is the use of a unified methodical approach which takes into account the qualitative composition of populations and the background conditions of their habitat.
    Description: Предложенные рекомендации являются логическим развитием исследований, направленных на оценку состояния сырьевой базы и формирование прогнозов вылова артемии и артемии (на стадии цист) различной заблаговременности. Их особенность в использовании единого методического подхода для учёта качественного состава популяций и фоновых условий среды их обитания.
    Description: Published
    Description: Non Refereed
    Keywords: Brine shrimp ; Stock assessment ; Artemia ; Food resources ; Methodology ; Recommended catches ; Рекомендованный вылов ; Цисты ; Артемия ; Оценка запасов ; ASFA_2015::B::Brine shrimp eggs ; ASFA_2015::C::Cysts ; ASFA_2015::F::Forecasting
    Repository Name: AquaDocs
    Type: Conference Material
    Format: 3pp.
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 5
    facet.materialart.
    Unknown
    Infestation of oysters and mussels by mytilicolid copepods: differences between natural coastal habitats and two offshore cultivation sites in the German Bight (2012)
    WILEY-BLACKWELL PUBLISHING
    In:  EPIC3Journal of Applied Ichthyology, WILEY-BLACKWELL PUBLISHING, 28(5), pp. 756-765, ISSN: 0175-8659
    Details
    Publication Date: 2019-07-17
    Description: The aim of this study was to determine the macro-parasitic infestation level of oysters from the southern German Bight focussing on copepods of the genus Mytilicola. Crassostrea gigas, Ostrea edulis and Mytilus edulis were collected at five locations: three nearshore sites in the eastern Wadden Sea and two offshore cultivation sites in the German Bight. To reveal seasonal variations one sampling site was investigated in winter and summer. At the nearshore sites, Mytilicola orientalis was regularly detected in C. gigas. Prevalences ranged between 32.3% and 45.1%, intensity between 3.0 ± 0.6 and 8.2 ± 1.5. Infestation rates of C. gigas within the southern German Bight decreased from west to east: Apparently, M. orientalis has started its range extension along the German coast with gradual retardation eastwards but generally followed the invasion route of its main host, the Pacific oyster. Interestingly, we detected not only M. intestinalis but also M. orientalis as an intestinal parasite in M. edulis, which has sofar not previously been described as host within this region. We conclude that M. orientalis is flexible in its host choice. Furthermore, in the eastern Wadden Sea infestation rates of oysters and mussels by copepods are similar. These results deviate from the patterns observed for the northern Wadden Sea in terms of infestation level and host specificity. No macro-parasites were found in oysters and mussels from the offshore sites. This absence can be considered as potentially beneficial for aquaculture activities in the open ocean in terms of stamina and physiological performance.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , peerRev
    Format: application/pdf
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 6
    facet.materialart.
    Unknown
    Assessment of the effect of absence of spawning on the fish-farming and biological characteristics of Siberian sturgeon Acipenser baerii (Brandt, 1869) offspring (2022)
    Russian Federal Research Institute of Fisheries and Oceanography (VNIRO) | Moscow (Russia)
    Details
    Publication Date: 2022-12-20
    Description: The article presents the results of studies on the effect of spawning season absence of female Siberian sturgeon of the Lena population on the fish-biological characteristics of the experimental group, as well as the grown-up juveniles in the conditions of industrial farms. The offspring of experimental females that underwent the resorption process, despite the lowest weight of embryos at hatching, maintained a high growth rate throughout the entire rearing period, comparable with juveniles of control groups.
    Description: Представлены результаты исследований о влиянии пропуска нерестового сезона у самок сибирского осетра ленской популяции на рыбоводно-биологические характеристики экспериментальной группы, а также подрощенной молоди в условиях индустриальных хозяйств. Потомство опытной самки, прошедшей процесс резорбции, несмотря на самую низкую массу эмбрионов при вылуплении, на всём протяжении выращивания сохраняло высокий темп роста, сравнимый с молодью контрольных групп.
    Description: Published
    Description: Non Refereed
    Keywords: Females ; SIberian sturgeon ; Resorption ; Градусо-дни ; Сумма тепла ; Embryos ; Hatching ; Aquaculture experiments ; Резорбция ; Молодь ; Индустриальные хозяйства ; ASFA_2015::S::Spawning seasons ; ASFA_2015::J::Juveniles ; ASFA_2015::G::Growth rate
    Repository Name: AquaDocs
    Type: Conference Material
    Format: 3pp.
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 7
    facet.materialart.
    Unknown
    Role of deposit-feeding sea cucumbers in integrated multitrophic aquaculture: progress, problems, potential and future challenges (2016)
    WILEY-BLACKWELL PUBLISHING
    In:  EPIC3Reviews in Aquaculture, WILEY-BLACKWELL PUBLISHING, ISSN: 1753-5131
    Details
    Publication Date: 2019-07-17
    Description: There is significant commercial and research interest in the application of sea cucumbers as nutrient recyclers and processors of particulate waste in polyculture or integrated multitrophic aquaculture (IMTA) systems. The following article reviews examples of existing IMTA systems operating with sea cucumbers, and details the role and effect of several sea cucumber species in experimental and pilot IMTA systems worldwide. Historical observations and quantification of impacts of sea cucumber deposit-feeding and locomotion are examined, as is the development and testing of concepts for the application of sea cucumbers in sediment remediation and site recovery. The extension of applied IMTA systems is reported, from basic piloting through to economically viable farming systems operating at commercial scales. The near-global recognition of the ecological and economic value of deposit-feeding sea cucumbers in IMTA applications within existing and developing aquaculture industries is discussed. Predictions and recommendations are offered for optimal development of sea cucumber IMTA globally. Future directions within the industry are indicated, and key areas of ecological, biological and commercial concern are highlighted to be kept in mind and addressed in a precautionary manner as the industry develops.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 8
    facet.materialart.
    Unknown
    Role of modular polyketide synthases in the production of polyether ladder compounds in ciguatoxin-producing Gambierdiscus polynesiensis and G. excentricus (Dinophyceae) (2017)
    WILEY-BLACKWELL PUBLISHING
    In:  EPIC3Journal of Eukaryotic Microbiology, WILEY-BLACKWELL PUBLISHING, ISSN: 1066-5234
    Details
    Publication Date: 2018-12-21
    Description: Gambierdiscus, a benthic dinoflagellate, produces ciguatoxins that cause the human illness Ciguatera. Ciguatoxins are polyether ladder compounds that have a polyketide origin, indicating that polyketide synthases (PKS) are involved in their production. We sequenced transcriptomes of Gambierdiscus excentricus and Gambierdiscus polynesiensis and found 264 contigs encoding single domain ketoacyl synthases (KS; G. excentricus: 106, G. polynesiensis: 143) and ketoreductases (KR; G. excentricus: 7, G. polynesiensis: 8) with sequence similarity to type I PKSs, as reported in other dinoflagellates. In addition, 24 contigs (G. excentricus: 3, G. polynesiensis: 21) encoding multiple PKS domains (forming typical type I PKSs modules) were found. The proposed structure produced by one of these megasynthases resembles a partial carbon backbone of a polyether ladder compound. Seventeen contigs encoding single domain KS, KR, s-malonyltransacylase, dehydratase and enoyl reductase with sequence similarity to type II fatty acid synthases (FAS) in plants were found. Type I PKS and type II FAS genes were distinguished based on the arrangement of domains on the contigs and their sequence similarity and phylogenetic clustering with known PKS/FAS genes in other organisms. This differentiation of PKS and FAS pathways in Gambierdiscus is important, as it will facilitate approaches to investigating toxin biosynthesis pathways in dinoflagellates.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , peerRev
    Format: application/pdf
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 9
    facet.materialart.
    Unknown
    Assessment of the influence of temperature on the formation of the Eastern and Western Kamchatka pink salmon population in different life periods (2022)
    Russian Federal Research Institute of Fisheries and Oceanography (VNIRO) | Moscow (Russia)
    Details
    Publication Date: 2022-12-20
    Description: The article presents the results of a comparative analysis of some databases describing SST (sea surface temperature) along the coast of Western Kamchatka with data from domestic weather stations carried out in the villages of Bolsheretsk, Icha, Sobolevo and Ozernovsky. These weather stations monitored air temperature and, in some years, water temperature in adjacent coastal areas. Databases ("10-days-SST", "MGDSST", "HIMSST") that adequately describe the actual curves of water temperature in the coastal area and air temperature in the area of concentration of the main spawning water basins and watercourses (ECMWF V5) have been identified. The selected databases were used to develop long-term series of temperature characteristics in the Kamchatka mainland and some areas of the Bering and Okhotsk Seas used by Western and Northeastern Kamchatka pink salmon at different stages of its life cycle.
    Description: Проведен сравнительный анализ некоторых баз данных (БД) описывающих SST (температуру поверхности воды) вдоль побережья западной Камчатки с данными отечественных метеостанций поселков Большерецк, Ича, Соболево и Озерновский, осуществлявших мониторинг температуры воздуха и в отдельные годы температуры воды в прилегающих участках прибрежья. Выявлены БД («10-days-SST», «MGDSST», «HIMSST») адекватно описывающие фактический ход температуры воды в прибрежье и температуры воздуха в районе концентрации основных нерестовых водоемов и водотоков (ECMWF V5). Выбранные базы данных использовались для построения продолжительных рядов температурных характеристик в материковой части Камчатки и некоторых районов Берингова и Охотского морей, используемых горбушей западного и северо-восточного побережий Камчатки на разных этапах своего жизненного цикла.
    Description: Published
    Description: Non Refereed
    Keywords: Coastal waters ; Air temperature ; Meteorological observations ; Databases ; Reproduction ; Pink salmon ; Температура поверхности воды ; Кратность воспроизводства ; Горбуша ; «10-days-SST» ; «MGDSST» ; «HIMSST» ; ASFA_2015::S::Sea surface temperature ; ASFA_2015::L::Life cycle ; ASFA_2015::S::Spawned salmon
    Repository Name: AquaDocs
    Type: Conference Material
    Format: 3pp.
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 10
    facet.materialart.
    Unknown
    Comparative analysis of fish-farming and biological indicators of male Siberian sturgeon in the second stage of sexual maturity (2022)
    Russian Federal Research Institute of Fisheries and Oceanography (VNIRO) | Moscow (Russia)
    Details
    Publication Date: 2022-12-20
    Description: The article presents the comparative results of two-year experimental works on obtaining sexual products from male Siberian sturgeons in conditions of a straight-flow basin industrial enterprise with annual total amount of 5500 degree-days are presented. The fish-farming, biological and morphological characteristics of the producers, their comparative indicators of the quality of sexual products, histological characteristics of the initial state of the gonads are given. It has been noted that the body weight and sperm movement time in Siberian sturgeon increase with age by 41.1 and 12.0 %, more ejaculate is produced by 21.8 %, the visual quality of sperm improves by 27.0 %, but the relative fecundity decreases by 11.6 %.
    Description: Представлены сравнительные результаты двухлетних экспериментальных работ по получению половых продуктов от самцов сибирского осетра в условиях прямоточного бассейнового индустриального предприятия с годовой суммой тепла 5500 градусо-дней. Приведена рыбоводно-биологическая и морфологическая характеристики производителей, их сравнительные показатели качества половых продуктов, гистологическая картина исходного состояния гонад. Отмечено, что с возрастом у сибирского осетра увеличивается масса тела и время движения сперматозоидов на 41,1 и 12,0 %, продуцируется больше эякулята на 21,8 %, улучшается визуальное качество спермы на 27,0 %, но уменьшается относительная плодовитость на 11,6 %.
    Description: Published
    Description: Non Refereed
    Keywords: Males ; Industrial aquaculture ; Siberian sturgeon ; Aquaculture enterprises ; Sexual products ; Relative fecundity ; Body weight ; Сибирский осетр ; Самцы ; Эякулят ; Прямоточные бассейны ; Морфометрические показатели ; ASFA_2015::A::Aquaculture industries ; ASFA_2015::G::Gonads ; ASFA_2015::S::Spermatogenesis
    Repository Name: AquaDocs
    Type: Conference Material
    Format: 3pp.
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER (OA)
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...