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This paper outlines the main take home messages after 40 + years of stream succession studies in Glacier Bay (Alaska, USA). Proposed models will be discussed including the main driving variables from filters at different ages of streams - 50, 100, 150 and 200 years. The future stream development will be outlined including the physical habitat conseptual framewok model and role of climate change on new systems emerging. The challenges of the studies over 40 years will be discussed. Potential avenues for future research priorities are suggested. [ABSTRACT FROM AUTHOR]

Novel ecosystems are those that have been altered by human activities and have afterwards experienced abandonment or human disuse, allowing for a new assemblage of species to establish. In urban areas, these ecosystems, are commonly found in post-industrial sites, vacant lots, and other unmanaged spaces. The informality of these ecosystems, assumptions of their low ecological value, and associations with negative attributes continue to prevent recognition of their social-ecological value. Although research in the last decade has started to show the potential of novel ecosystems to address several challenges such as biodiversity loss, there remains a need to understand what areas of research are needed to progress our understanding of these ecosystems in urban areas. This paper uses a modified Delphi methodology, in which a panel of knowledge-holders provided their understandings and insights of urban novel ecosystems. Through this process, we distilled key questions for future research and practice that should drive the investigation of these wild ecosystems for improved decision-making. This study sets out recommendations on how to progress the research questions as part of urban transformative agendas in which urban novel ecosystems offer new possibilities for climate experimentation, social-ecological stewardship and biodiversity conservation. • Urban novel ecosystems – diverse and highly modified ecosystems – are largely under-researched for various reasons. • To identify potential research priorities for urban novel ecosystems a modified Delphi approach was used. • Research priorities include: biodiversity and ecosystem services; landscape perceptions; and decision-making and planning. • An agenda that addresses knowledge gaps around novel ecosystems can contribute to achieving biodiversity-rich futures. [ABSTRACT FROM AUTHOR]

Understanding and responding to the rapidly occurring environmental changes in the Arctic over the past few decades require new approaches in science. This includes improved collaborations within the scientific community but also enhanced dialogue between scientists and societal stakeholders, especially with Arctic communities. As a contribution to the Third International Conference on Arctic Research Planning (ICARPIII), the Arctic in Rapid Transition (ART) network held an international workshop in France, in October 2014, in order to discuss high-priority requirements for future Arctic marine and coastal research from an early-career scientists (ECS) perspective. The discussion encompassed a variety of research fields, including topics of oceanographic conditions, sea-ice monitoring, marine biodiversity, land-ocean interactions, and geological reconstructions, as well as law and governance issues. Participants of the workshop strongly agreed on the need to enhance interdisciplinarity in order to collect comprehensive knowledge about the modern and past Arctic Ocean's geo-ecological dynamics. Such knowledge enables improved predictions of Arctic developments and provides the basis for elaborate decision-making on future actions under plausible environmental and climate scenarios in the high northern latitudes. Priority research sheets resulting from the workshop's discussions were distributed during the ICARPIII meetings in April 2015 in Japan, and are publicly available online. [ABSTRACT FROM AUTHOR]

A review of the acute and chronic effects of produced formation water (PFW), drilling fluids (muds) including oil-based cutting muds, water-based cutting muds, ester-based cutting muds and chemical additives, and crude oils associated with offshore oil and gas production was undertaken in relation to both temperate and tropical marine ecological processes. The main environmental effects are summarized, often in tabular form. Generally, the temporal and spatial scales of these studies, along with the large levels of inherent variation in natural environments, have precluded our ability to predict the potential long-term environmental impacts of the offshore oil and gas production industry. A series of critical questions regarding the environmental effects of the offshore oil and gas production industry that still remain unanswered are provided for future consideration. [Copyright &y& Elsevier]