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2019-10-24
Ellen MacArthur Foundation;
Launched in October 2018 with over 250 signatories, the Global Commitment now unites more than 400 organisations behind a common vision of a circular economy for plastics, in which plastics never become waste. To help make this vision a reality, all business and government signatories of the Global Commitment are committing to ambitious 2025 targets. They will work to eliminate the plastic items we don't need; innovate so all plastics we do need are designed to be safely reused, recycled, or composted; and circulate everything we use to keep it in the economy and out of the environment. Credibility and transparency are ensured by a clear minimum level of ambition for signatories, common definitions underpinning all commitments, publication of commitments online and annual reporting on progress. The minimum ambition level will be reviewed — and will become increasingly ambitious — in the coming years to ensure the Global Commitment continues to represent true leadership.
2019-10-17
Environmental and Energy Study Institute;
This fact sheet begins a series on commercial aviation, by examining the impact the growth of air travel and freight will have on greenhouse gas emissions. In 1960, 100 million passengers traveled by air, at the time a relatively expensive mode of transportation available only to a small fraction of the public. By 2017, the total annual world-wide passenger count was 4 billion. The "hypermobility" of air travel is available to greater numbers of people worldwide, with rapid growth in aviation projected for developing nations and sustained growth in the large established aviation markets of developed countries. While our collective use of automobiles, our production of electricity, and the industrial and agricultural sectors each exceed the climate change impact of commercial aviation, passenger air travel is producing the highest and fastest growth of individual emissions, despite a significant improvement in efficiency of aircraft and flight operations over the last 60 years.
2019-10-16
Royal Society Open Science;
The recovery of whale populations from centuries of exploitation will have important management and ecological implications due to greater exposure to anthropogenic activities and increasing prey consumption. Here, a Bayesian population model integrates catch data, estimates of abundance, and information on genetics and biology to assess the recovery of western South Atlantic (WSA) humpback whales (Megaptera novaeangliae). Modelling scenarios evaluated the sensitivity of model outputs resulting from the use of different data, different model assumptions and uncertainty in catch allocation and in accounting for whales killed but not landed. A long period of exploitation drove WSA humpback whales to the brink of extinction. They declined from nearly 27 000 (95% PI = 22 800–33 000) individuals in 1830 to only 450 (95% PI = 200–1400) whales in the mid-1950s. Protection led to a strong recovery and the current population is estimated to be at 93% (95% PI = 73–100%) of its pre-exploitation size. The recovery of WSA humpback whales may result in large removals of their primary prey, the Antarctic krill (Euphausia superba), and has the potential to modify the community structure in their feeding grounds. Continued monitoring is needed to understand how these whales will respond to modern threats and to climate-driven changes to their habitats.
2019-10-15
International Seafood Sustainability Foundation (ISSF);
ISSF 2019-12: Status of the World Fisheries for Tuna. October 2019 summarizes and rates the status and management of 23 major commercial tuna stocks, based on the most recent scientific assessments as well as management measures adopted by the RFMOs.
Known as ISSF's "Status of the Stocks" report, it uses a consistent methodology focused on three factors: Abundance, Exploitation/Management, and Environmental Impact (bycatch). It does not replace the more detailed information available directly from the RFMOs. But it does serve as a single source in which uniform information is presented. It is reviewed by the ISSF Scientific Advisory Committee, which provides advice on its content.
Status of the World Fisheries for Tuna features charts, graphs, and individual stock assessments, which are organized by ocean or by ocean region. It also includes a list of Marine Stewardship Council-certified tuna fisheries (p. 108).
2019-10-08
ScienceDirect;
We argue the need to improve climate change forecasting for ecology, and importantly, how to relate long-term projections to conservation. As an example, we discuss the need for effective management of one species, the emperor penguin, Aptenodyptes forsteri. This species is unique amongst birds in that its breeding habit is critically dependent upon seasonal fast ice. Here, we review its vulnerability to ongoing and projected climate change, given that sea ice is susceptible to changes in winds and temperatures. We consider published projections of future emperor penguin population status in response to changing environments. Furthermore, we evaluate the current IUCN Red List status for the species, and recommend that its status be changed to Vulnerable, based on different modelling projections of population decrease of ≥50% over the current century, and the specific traits of the species. We conclude that current conservation measures are inadequate to protect the species under future projected scenarios. Only a reduction in anthropogenic greenhouse gas emissions will reduce threats to the emperor penguin from altered wind regimes, rising temperatures and melting sea ice; until such time, other conservation actions are necessary, including increased spatial protection at breeding sites and foraging locations. The designation of large-scale marine spatial protection across its range would benefit the species, particularly in areas that have a high probability of becoming future climate change refugia. We also recommend that the emperor penguin is listed by the Antarctic Treaty as an Antarctic Specially Protected Species, with development of a species Action Plan.
2019-10-07
Current Biology;
Coastal zones, the world's most densely populated regions, are increasingly threatened by climate change stressors — rising and warming seas, intensifying storms and droughts, and acidifying oceans. Although coastal zones have been affected by local human activities for centuries, how local human impacts and climate change stressors may interact to jeopardize coastal ecosystems remains poorly understood. Here we provide a review on interactions between climate change and local human impacts (e.g., interactions between sea level rise and anthropogenic land subsidence, which are forcing Indonesia to relocate its capital city) in the coastal realm. We highlight how these interactions can impair and, at times, decimate a variety of coastal ecosystems, and examine how understanding and incorporating these interactions can reshape theory on climate change impacts and ecological resilience. We further discuss implications of interactions between climate change and local human impacts for coastal conservation and elucidate the context when and where local conservation is more likely to buffer the impacts of climate change, attempting to help reconcile the growing debate about whether to shift much of the investment in local conservation to global CO2 emission reductions. Our review underscores that an enhanced understanding of interactions between climate change and local human impacts is of profound importance to improving predictions of climate change impacts, devising climate-smart conservation actions, and helping enhance adaption of coastal societies to climate change in the Anthropocene.
2019-10-07
CIVICUS - World Alliance for Citizen Participation;
The Goalkeepers Youth Action Accelerator is a youth-led and multi-partner global programme dedicated to accelerating progress towards the Sustainable Development Goals (SDGs). It brings together a pioneering and truly inspiring generation of 26 young and diverse leaders to address the world's major challenges. These leaders create impact by sharing powerful stories, analysing data, forming robust partnerships and ultimately holding governments accountable for their SDG promises.
This brief shares key outcomes, reflections and recommendations from the young people who have taken part in the Youth Action Accelerator programme. It suggests ways of ensuring strengthened and more meaningful youth engagement across partnerships, policies and programmes, specifically in the areas of resourcing, health, climate change and technology.
2019-10-02
Science Advances;
Bleaching and disease are decimating coral reefs especially when warming promotes bleaching pathogens, such as Vibrio coralliilyticus. We demonstrate that sterilized washes from three common corals suppress V. coralliilyticus but that this defense is compromised when assays are run at higher temperatures. For a coral within the ecologically critical genus Acropora, inhibition was 75 to 154% greater among colonies from coral-dominated marine protected areas versus adjacent fished areas that were macroalgae-dominated. Acropora microbiomes were more variable within fished areas, suggesting that reef degradation may also perturb coral microbial communities. Defenses of a robust poritid coral and a weedy pocilloporid coral were not affected by reef degradation, and microbiomes were unaltered for these species. For some ecologically critical, but bleaching-susceptible, corals such as Acropora, local management to improve reef state may bolster coral resistance to global change, such as bacteria-induced coral bleaching during warming events.
2019-09-25
Royal Society Publishing, The;
The distributions of migratory species in the ocean span local, national and international jurisdictions. Across these ecologically interconnected regions, migratory marine species interact with anthropogenic stressors throughout their lives. Migratory connectivity, the geographical linking of individuals and populations throughout their migratory cycles, influences how spatial and temporal dynamics of stressors affect migratory animals and scale up to influence population abundance, distribution and species persistence. Population declines of many migratory marine species have led to calls for connectivity knowledge, especially insights from animal tracking studies, to be more systematically and synthetically incorporated into decision-making. Inclusion of migratory connectivity in the design of conservation and management measures is critical to ensure they are appropriate for the level of risk associated with various degrees of connectivity. Three mechanisms exist to incorporate migratory connectivity into international marine policy which guides conservation implementation: site-selection criteria, network design criteria and policy recommendations. Here, we review the concept of migratory connectivity and its use in international policy, and describe the Migratory Connectivity in the Ocean system, a migratory connectivity evidence-base for the ocean. We propose that without such collaboration focused on migratory connectivity, efforts to effectively conserve these critical species across jurisdictions will have limited effect.
2019-09-23
High Level Panel for a Sustainable Ocean Economy (HLP);
The ocean is a dominant feature of our planet, covering 70 percent of its surface and driving its climate and biosphere. The ocean sustains life on earth and yet is in peril from climate change. However, while much of recent attention is focused on the problems that the ocean faces, the ocean is also a source of potential solutions and innovation. This report explores how the ocean, its coastal regions and economic activities can provide opportunities in the fight against climate change.
2019-09-19
CLTS Knowledge Hub;
This issue of Frontiers of CLTS explores current thinking and practice on the topic of tackling slippage of open defecation free (ODF) status. It looks at how slippage is defined and identified, and at different patterns of slippage that are seen after ODF is declared. Although a considerable amount has been written on how to establish strong Community-Led Total sanitation (CLTS) programmes that prevent slippage from happening, this issue looks at how to reverse slippage that has already taken place. Note however, that at a certain level, strategies used to reverse slippage and those used in advance to set a programme up for success to prevent slippage occurring overlap.
From the literature, there is little documented evidence on how slippage can be reversed; evidence and guidance tend to focus on prevention. This review begins to address this gap. Implementers are encouraged to use the proposed patterns of slippage framework and slippage factors section to understand the type and extent of slippage experienced, then use the examples in the section on tackling slippage to identify potential slippage responses.
In addition to a review of current literature, in depth interviews were carried out with key informants at global, regional and country level. Key informants were selected purposively to identify experiences and innovations in tackling slippage from across the sector.
Issue 14, September 2019
2019-09-17
Scientific Reports;
Acquiring and storing energy is vital to sharks of all age-classes. Viviparous shark embryos receive endogenous maternal energy reserves to sustain the first weeks after birth. Then, in order to maintain body condition, sharks must start foraging. Our goal was to understand whether maternal energy investments vary between blacktip reef sharks (Carcharhinus melanopterus) from two populations and to what extent body condition and the initiation of foraging might be affected by presumably variable maternal investments. A total of 546 young sharks were captured at St. Joseph atoll (Seychelles) and Moorea (French Polynesia) between 2014 and 2018, and indices of body condition and percentage of stomachs containing prey were measured. Maternal investment was found to be site-specific, with significantly larger, heavier, and better conditioned individuals in Moorea. Despite these advantages, as time progressed, Moorea sharks exhibited significant decreases in body condition and were slower to initiate foraging. We suggest that the young sharks' foraging success is independent of the quality of maternal energy resources, and that other factors, such as prey availability, prey quality, and/or anthropogenic stressors are likely responsible for the observed differences across sites. Insights into intraspecific variations in early life-stages may further support site-specific management strategies for young sharks from nearshore habitats.
