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  • 1
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    Late Quaternary Climate Reconstruction and Lead-Lag Relationships of Biotic and Sediment-Geochemical Indicators at Lake Bolshoe Toko, Siberia (2021)
    Frontiers
    In:  EPIC3Frontiers in Earth Science, Frontiers, 9, ISSN: 2296-6463
    Details
    Publikationsdatum: 2022-06-14
    Beschreibung: Millennial-scale climate change history in eastern Siberia and relationships between diatom diversity, paleoclimate, and sediment-geochemical lake system trajectories are still poorly understood. This study investigates multi-proxy time series reaching back to the Late Pleistocene derived from radiocarbon dated Lake Bolshoe Toko sediment cores, southeastern Yakutia, Russia. We analyzed diatoms, elements (XRF), minerals (XRD), grain-size, organic carbon, and included chironomid analyses and published pollen-data for quantitative paleoclimate reconstruction. Changes in diatom species abundances reveal repeated episodes of thermal stratification indicated by shifts from euplanktonic Aulacoseira to Cyclotella species. Chironomid and pollen-inferred temperature reconstruction reveal that the main shift between these diatom species is related to the onset of Holocene Thermal Maximum (HTM) at 7.1 cal ka BP. Comparison to other paleoclimate records along a north-south transect through Yakutia shows that the HTM was delayed as far south as the Stanovoy mountains. Relationships between sediment-geochemistry, paleoclimate variability and diatom species richness (alpha diversity) was tested in a moving temporal offset approach to detect lead-lag relationships. Sediment-geochemical data, mainly uniform during the Holocene, revealed strongest positive or negative correlations ahead of species richness changes. Mean July air temperature (TJuly) reconstructions correlate with both Hill numbers and relative assemblage changes indicated by sample scores of multidimensional scaling analysis (MDS) over the entire time series. We found that sediment organic carbon revealed distinct positive correlations, i.e., centennial-scale delay to increases in diatom effective richness (Hill numbers N0 and N2). We conclude that a lag of deposited organic carbon concentrations behind changes in diatom alpha diversity reveals that species richness can augment the production and thus sequestration of organic matter in comparable lake systems.
    Repository-Name: EPIC Alfred Wegener Institut
    Materialart: Article , isiRev
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  • 2
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    Editorial: Adaptation and phenotypic plasticity to climate change. (2022)
    Frontiers
    In:  EPIC3Frontiers in Marine Science, Frontiers, 9(893117)
    Details
    Publikationsdatum: 2022-04-25
    Beschreibung: Anthropogenic activities are driving rapid changes in aquatic environments. Numerous studies suggest that climatic shifts and anomalies will convey severe consequences for ecosystems worldwide, leading to disruptions in key processes within populations including larval development, individual growth, and reproductive success. This is further exacerbated by the negative impacts on between-species interactions, and changes to biodiversity and ecosystem services (Munday et al., 2013). Understanding the responses of organisms to environmental shifts is imperative to help predict their fate on a changing planet. Particularly, the capacity of individuals and populations to cope through phenotypic plasticity and adaptation is of critical interest, with advances in genomics and epigenomics techniques helping to unveil the underlying molecular mechanisms (Eirin-Lopez and Putnam, 2019). However, major knowledge gaps remain about the adaptive potential of marine organisms to respond to future ocean conditions. The aim of this Research Topic was to bring together novel research approaches that examine acclimation and adaptation processes in marine organisms, their role in population resilience, and implications for geographical distributions and range shifts under rapid climate change. Contributions to the topic span a broad range of taxa, and investigate a diverse array of response mechanisms such as thermal safety margins (Bennett et al.), thermotolerance via endosymbionts and gene expression (Naugle et al.), tolerance via changes in allele frequencies (Knöbel et al.), local adaptation and maternal effects (Richards et al.), transgenerational plasticity (TGP; Chang et al.), environment-dependent reproductive success (Wanzenböck et al.), and phenological shifts to long-term seasonal changes (Xia et al.). Furthermore, the importance of environmental variability (not only mean changes) at different time scales, the role of developmental or life history stage in phenotypic responses, as well as future challenges for plasticity research (both within and across generations) are outlined in Bautista and Crespel.
    Repository-Name: EPIC Alfred Wegener Institut
    Materialart: Article , isiRev
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  • 3
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    Dynamic Species Distribution Models in the Marine Realm: Predicting Year-Round Habitat Suitability of Baleen Whales in the Southern Ocean (2021)
    Frontiers
    In:  EPIC3Frontiers in Marine Science, Frontiers, 8(802276), ISSN: 2296-7745
    Details
    Publikationsdatum: 2022-01-04
    Beschreibung: Species distribution models (SDMs) relate species information to environmental conditions to predict potential species distributions. The majority of SDMs are static, relating species presence information to long-term average environmental conditions. The resulting temporal mismatch between species information and environmental conditions can increase model inference’s uncertainty. For SDMs to capture the dynamic species-environment relationships and predict near-real-time habitat suitability, species information needs to be spatiotemporally matched with environmental conditions contemporaneous to the species’ presence (dynamic SDMs). Implementing dynamic SDMs in the marine realm is highly challenging, particularly due to species and environmental data paucity and spatiotemporally biases. Here, we implemented presence-only dynamic SDMs for four migratory baleen whale species in the Southern Ocean (SO): Antarctic minke, Antarctic blue, fin, and humpback whales. Sightings were spatiotemporally matched with their respective daily environmental predictors. Background information was sampled daily to describe the dynamic environmental conditions in the highly dynamic SO. We corrected for spatial sampling bias by sampling background information respective to the seasonal research efforts. Independent model evaluation was performed on spatial and temporal cross-validation. We predicted the circumantarctic year-round habitat suitability of each species. Daily predictions were also summarized into bi-weekly and monthly habitat suitability. We identified important predictors and species suitability responses to environmental changes. Our results support the propitious use of dynamic SDMs to fill species information gaps and improve conservation planning strategies. Near-real-time predictions can be used for dynamic ocean management, e.g., to examine the overlap between habitat suitability and human activities. Nevertheless, the inevitable spatiotemporal biases in sighting data from the SO call for the need for improving sampling effort in the SO and using alternative data sources (e.g., passive acoustic monitoring) in future SDMs. We further discuss challenges of calibrating dynamic SDMs on baleen whale species in the SO, with a particular focus on spatiotemporal sampling bias issues and how background information should be sampled in presence-only dynamic SDMs. We also highlight the need to integrate visual and acoustic data in future SDMs on baleen whales for better coverage of environmental conditions suitable for the species and avoid constraints of using either data type alone.
    Repository-Name: EPIC Alfred Wegener Institut
    Materialart: Article , peerRev
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  • 4
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    Samudra Report No.87, March 2022 (2022)
    International Collective in Support of Fishworkers (ICSF) | India
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    Publikationsdatum: 2022-08-12
    Beschreibung: The International Collective in Support of Fishworkers (ICSF) has just published the latest issue of SAMUDRA Report, its triannual journal on fisheries, communities and livelihoods. The current edition, SAMUDRA Report No. 87, dated March 2022, features a range of articles from Africa, Asia and Europe, with a special focus on the International Year of Artisanal Fisheries and Aquaculture (IYAFA 2022). The editorial Comment in the issue calls for collective and collaborative actions of all stakeholders to develop coherent and meaningful policies and legislation for the sector. Pointing out that IYAFA 2022 is a chance to create greater awareness about the role of small-scale fisheries in food production, and about the traditional knowledge and rich cultural diversity of fishing communities, the Comment hopes the year becomes a historic watershed for the sector and its communities. SAMUDRA Report No. 87 can be accessed at: https://www.icsf.net/samudra-report/
    Beschreibung: Published
    Beschreibung: Refereed
    Schlagwort(e): Samudra Report ; Fishing Communities ; International Year of Artisanal Fisheries and Aquaculture (IYAFA) ; Livelihoods ; Small-scale Fisheries ; Blue Economy ; Traditional Knowledge ; Marine Ecology ; Climate Change ; IPCC ; Vulnerability ; Oil Spills ; Women ; Human Rights ; Conflicts ; Fishing Gear ; CAOPA ; IYAFA 2022 ; Covid
    Repository-Name: AquaDocs
    Materialart: Book/Monograph/Conference Proceedings
    Format: 64pp.
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  • 5
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    Samudra Report No.86, November 2021 (2022)
    The International Collective in Support of Fishworkers (ICSF) | India
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    Publikationsdatum: 2022-02-23
    Beschreibung: The International Collective in Support of Fishworkers (ICSF) has just published the latest issue of SAMUDRA Report, its triannual journal on fisheries, communities and livelihoods. The current edition, SAMUDRA Report No. 86, dated November 2021, features a range of articles from Africa, Asia and South America, specifically from Ghana, Kenya, Thailand, the Philippines, India, Bangladesh and Chile. The issue also carries an analysis of the Blue Economy and small-scale fisheries, as well as articles on the UN Food Systems Summit. An obituary notice celebrates the life of Brazilian fisheries engineer and researcher Fábio Hissa Vieira Hazin, who succumbed to COVID-19 on 8 June 2021, World Oceans Day. The editorial Comment in SAMUDRA Report No. 86 argues that negotiations on subsidies at the World Trade Organization (WTO) should lead to an agreement whose primary goal is transparency and universality in fisheries conservation and management measures.
    Beschreibung: Published
    Beschreibung: Refereed
    Schlagwort(e): ICSF ; Samudra Report ; COVID ; WTO ; Fisheries Subsidies ; Fisheries management ; World Ocean Day ; Fisheries Conversation ; Blue Economy ; Small-scale Fisheries ; Fishing Communities
    Repository-Name: AquaDocs
    Materialart: Book/Monograph/Conference Proceedings
    Format: 52p.
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  • 6
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    Samudra Report No.85, May 2021 (2022)
    The International Collective in Support of Fishworkers (ICSF) | India
    Details
    Publikationsdatum: 2022-02-23
    Beschreibung: The International Collective in Support of Fishworkers (ICSF) has just published the latest issue of SAMUDRA Report, its triannual journal on fisheries, communities and livelihoods. The current edition, SAMUDRA Report No. 85, dated May 2021, features a range of articles from Africa, Asia, South America and the Caribbean, specifically from Turkey, Cambodia, South Africa, Brazil, Tanzania, Sri Lanka, Indonesia, Mozambique, Antigua and Barbuda, Bangladesh, Costa Rica, India, France, the Philippines, Brazil and Thailand. The issue also carries articles that analyze the Blue Economy, destructive fishing, small-scale fisheries (SSF) and the SSF Guidelines, among other topics. The current issue has three articles on food security (from Indonesia, Sri Lanka and Cambodia) and five articles on social development and sustainable fisheries (from Antigua and Barbuda, Bangladesh, Costa Rica, India, the Philippines and Thailand). The editorial Comment in SAMUDRA Report No. 85 discusses how the COVID-19 pandemic has exposed the global inadequacy of social-protection floors in safeguarding marginalized communities, in the process exacerbating poverty and vulnerability.
    Beschreibung: Published
    Beschreibung: Refereed
    Schlagwort(e): ICSF ; Samudra Report ; SSF Guidelines ; Small-scale fisheries ; Fishing communities ; Social development ; Social protection ; Sustainable fisheries
    Repository-Name: AquaDocs
    Materialart: Book/Monograph/Conference Proceedings
    Format: 88p.
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  • 7
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    A case for a human rights-based approach to Indian aquaculture systems: A literature review. (2022)
    International Collective in Support of Fishworkers (ICSF) | India
    Details
    Publikationsdatum: 2022-08-08
    Beschreibung: Aquaculture is the new sunrise sector with respect to ­fish production. Developing countries of Asia are the world leaders, with a large population dependent on the sector. Though a plethora of literature is available on aquaculture, there is a lacuna with regards to speci­fic studies on the human rights aspects of the same. This study is an effort to bring focus on this void and the facets that need to be examined if aquaculture is to become sustainable and is able to contribute towards various sustainable development goals as envisaged. As the human dependence on the sector is very high, the study emphasises the need and importance of placing a human rights-based framework at the centre stage of future growth of aquaculture in India. This will steer the development towards an environmentally sound and socially just path, a prerequisite for the sector. the objective of the study is to understand the strengths of legislation, guidelines, schemes and other government documents with regard to the defence of human rights; review and analyse the environmental and social impacts of aquaculture systems as seen in the literature review; and to suggest a set of recommendations that could help ­fill the gaps in the current systems as identi­fied by this study. The monograph will be of use to researchers, scientists, fishworker organisations, environmentalists and anyone interested in aquaculture development in India.
    Beschreibung: Published
    Beschreibung: Refereed
    Schlagwort(e): Fish Production ; Developing Countries ; Aquaculture ; Human Rights ; Sustainable Development ; SDG ; Legislation ; Environment ; Social Impact ; Aquaculture Development
    Repository-Name: AquaDocs
    Materialart: Book/Monograph/Conference Proceedings
    Format: 74pp.
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  • 8
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    Yemaya No. 63, May 2021 (2022)
    The International Collective in Support of Fishworkers (ICSF) | India
    Details
    Publikationsdatum: 2022-02-21
    Beschreibung: Yemaya No. 63, dated May 2021, features articles from US, The Netherlands, Myanmar, Senegal, and an article on women in fisheries and human rights. The article from the US by Linda Behnken argues that a growing coalition of small-scale, community-based fishers is calling for the recognition and protection of Alaska’s invaluable coastal fisheries during COVID-19. The article from the Netherlands by Cornelie Quist looks at the challenges facing women engaged in small-scale fishing and supplying fish through retailers and how they found new ways to directly reach consumers. The conversation between Miranda Bout and Cornelie Quist focuses on how they combined new product development with the use of social media to contact their customer base during the pandemic-induced disruption of traditional marketing chains. The article by Elena Finkbeiner, Juno Fitzpatrick and Whitney Yadao-Evans looks at recent media revelations and scientific research that have brought increased attention to human-rights violations and the myriad social issues facing fisheries, but with a disproportionate focus on labour-rights violations at sea and in industrial fishing operations. The systemic inequalities combined with the effects of COVID-19 exacerbated vulnerabilities of women to health risks, food and livelihood security. The article from Senegal by Aby Dia from Lumière Synergie pour le Développement (LSD), in collaboration with WoMin African Alliance, South Africa, narrates the story of traditional women fish processors from the Bargny who have been, for more than a decade, struggling against development projects that jeopardise their environment, health and livelihoods. In order to preserve their livelihoods, women processors in Senegal have come together to oppose the Tosyali steel project. The European Network of Women in Fisheries and Aquaculture in Europe (AKTEA) urges the Office of the Commissioner for the Environment, Oceans and Fisheries to integrate gender into all aspects of European fishing policy. The Profile column looks at how Linda Behnken became a fisher in Alaska and how fishing has shaped her individuality and work. Natalie Sattler says that fishing for halibut, sablefish and salmon from the sparkling waters of the Pacific along with her children and at the same time passion for working with the Alaska Longline Fishermen’s Association and the Alaska Sustainable Fisheries Trust is an immense challenge.
    Beschreibung: Published
    Beschreibung: Refereed
    Schlagwort(e): Fishing Communities ; Women in fisheries ; Gender ; Small-scale fisheries ; Aquaculture ; Fisheries
    Repository-Name: AquaDocs
    Materialart: Book/Monograph/Conference Proceedings
    Format: 12p.
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  • 9
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    Practical Issues in Monitoring a Hydrocarbon Cultivation Activity in Italy: The Pilot Project at the Cavone Oil Field (2021)
    Frontiers
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    Publikationsdatum: 2021-11-12
    Beschreibung: In this paper we describe the results of an experimental implementation of the recent guidelines issued by the Italian regulatory body for monitoring hydrocarbon production activities. In particular, we report about the pilot study on seismic, deformation, and pore pressure monitoring of the Mirandola hydrocarbon cultivation facility in Northern Italy. This site hosts the Cavone oil field that was speculated of possibly influencing the 2012 ML 5.8 Mirandola earthquake source. According to the guidelines, the monitoring center should analyse geophysical measurements related to seismicity, crustal deformation and pore pressure in quasi real-time (within 24–48 h). A traffic light system would then be used to regulate underground operations in case of detecting significant earthquakes (i.e., events with size and location included in critical ranges). For these 2-year period of guidelines experimentation, we analysed all different kinds of available data, and we tested the existence of possible relationship between their temporal trends. Despite the short time window and the scarce quantity of data collected, we performed the required analysis and extracted as much meaningful and statistically reliable information from the data. We discuss here the most important observations drawn from the monitoring results, and highlight the lessons learned by describing practical issues and limitations that we have encountered in carrying out the tasks as defined in the guidelines. Our main goal is to contribute to the discussion about how to better monitor the geophysical impact of this kind of anthropogenic activity. We point out the importance of a wider seismic network but, mostly, of borehole sensors to improve microseismic detection capabilities. Moreover, the lack of an assessment of background seismicity in an unperturbed situation -due to long life extraction activities- makes it difficult to get a proper picture of natural background seismic activity, which would be instead an essential reference information for a tectonically-active regions, such as Northern Italy.
    Beschreibung: “Convenzione tra il comune di San Possidonio e l’Istituto Nazionale di Geofisica e Vulcanologia -I.N.G.V.- per l’attuazione del monitoraggio nella concessione di coltivazione idrocarburi “Mirandola” finalizzata alla messa in opera di attività di monitoraggio di sperimentazione degli indirizzi e linee guida per i monitoraggi ILG ed assunzione funzioni di Struttura Preposta al Monitoraggio di cui all’art. 6 del Protocollo Operativo”
    Beschreibung: Published
    Beschreibung: 685300
    Beschreibung: 3SR TERREMOTI - Attività dei Centri
    Beschreibung: JCR Journal
    Schlagwort(e): Italian guidelines for monitoring industrial activities ; induced seismicity ; pore pressure monitoring ; deformation monitoring ; seismic monitoring ; 04.06. Seismology ; 05.09. Miscellaneous ; 04.02. Exploration geophysics ; 04.03. Geodesy
    Repository-Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Materialart: article
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