Publications by authors named "Shizuka Hashimoto"

Forest fires are integral to forest ecosystems as they influence nutrient cycling, plant regeneration, tree density, and biodiversity. However, human-induced climate change and activities have made forest fires more frequent, more intense, and more widespread, exacerbating their ecological and socioeconomic impact. Forest fires shape Tamil Nadu's diverse forest ecosystems, yet rising anthropogenic pressure and a warmer, drier climate have increased both their frequency and severity.

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Deltas have a remarkable capacity to sustain human populations, owing to their productivity and biodiversity. The increasing demand for fertile land and valuable resources in deltas has driven dramatic anthropogenic changes in deltas around the world, resulting in their ecological degradation. To make informed decisions regarding management of land in deltas, it is essential to expand the current understanding of the underlying causes and consequences of delta changes.

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  • The study emphasizes the importance of urban forests as vital green infrastructure that delivers essential ecosystem services in cities, highlighting the need for better integration of these services into urban planning.
  • A workflow is developed that includes field investigations, the use of i-Tree Eco software for quantifying ecosystem services, and multiple statistical interpolation methods, concluding that Empirical Bayesian Kriging is the most accurate.
  • Findings indicate that residential areas in Kyoto exhibit higher tree density and ecosystem service values, with positive spatial correlations between service values and various urban features like parks and tourist attractions.
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  • To address environmental degradation, societies need to redefine their relationship with nature, aiming for a sustainable future as outlined by the Convention of Biological Diversity.
  • The Nature Futures Framework was created to explore various perspectives on achieving ecological harmony, providing a platform for developing scenarios and narratives about desirable futures.
  • The paper assesses six different narratives within the framework, focusing on key debates about land use and economic development, ultimately suggesting that this approach can help shape transformative pathways for a sustainable relationship with nature.
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  • - The study examines the effects of land use and land cover (LULC) changes on habitat quality in the ecologically fragile Loess Plateau, revealing significant urban expansion from 2000 to 2050 that decreases cropland and grassland areas.
  • - An integrated assessment method was developed to evaluate habitat quality changes, predicting a general decline by 2050, with urban expansion identified as the primary threat to habitat quality, especially under different future scenarios.
  • - Recommendations include implementing high-level socio-ecological protection policies, establishing national nature reserves, and continuous monitoring to improve habitat conservation strategies in sensitive ecological regions.
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The two most urgent and interlinked environmental challenges humanity faces are climate change and biodiversity loss. We are entering a pivotal decade for both the international biodiversity and climate change agendas with the sharpening of ambitious strategies and targets by the Convention on Biological Diversity and the United Nations Framework Convention on Climate Change. Within their respective Conventions, the biodiversity and climate interlinked challenges have largely been addressed separately.

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Globally, shifting cultivation is known to be an important driver of tropical deforestation. However, in this paper, we argue that it can be sustainably managed if the environmental boundary conditions, laid by the traditional customs and practices, are fully respected. We narrate an empirical study from the Zunheboto district of Nagaland, India, where we deployed a mixed research method to explore the Indigenous and Local Knowledge and Practices (ILKPs) associated with shifting cultivation (aka Jhum), particularly concerning farm-level practices, forest and biodiversity conservation, and disaster risk reduction measures.

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Agricultural land accounts for 37% of the world's terrestrial area, and the multiple functions of agroecosystems-providing food, soil and water retention, and various cultural services-are of great importance for sustainable land management. To ensure that multifunctionality, payment for ecosystem services (PES) schemes have been developed for heterogeneous agroecosystems. However, the effects of the schemes have not been fully measured because, in most cases, they have been implemented as action-oriented programs rather than outcome-based payments.

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  • * The model forecasts population changes at both municipal levels using detailed methods, illustrating how populations might migrate and concentrate in urban centers versus spread out in smaller areas.
  • * By 2050, the projections indicate significant changes in population density and demographics, with some areas expected to see complete depopulation, which could impact land use and natural resources like farmland and forests.
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  • Researchers used DNA barcoding to analyze species diversity in the catfish genera Tympanopleura and Ageneiosus, generating 17 barcodes from Tympanopleura and 12 from Ageneiosus.
  • * The study employed methods like ABGD, GMYC, and K2P to identify species limits, resulting in 13 distinct clusters which mostly aligned with known species, but showed challenges in differentiating some groups due to low genetic divergence.
  • * Findings suggest recent evolutionary developments in the Amazon Basin and highlight the effectiveness of molecular methods in uncovering hidden biodiversity.
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  • The study explores how biocultural diversity in Japanese and European landscapes is impacted by human activities and discusses the threats posed by land abandonment and urbanization.
  • It focuses on identifying local food networks that enhance connections between biological and cultural diversity, finding that these networks are mostly driven by community initiatives rather than market forces.
  • The study highlights differing motivations in Europe and Japan, suggesting a potential exchange of strategies between the two regions to effectively address issues like rural aging and biodiversity conservation, along with recommendations for policy improvements.
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  • The study examines the high costs of radiation decontamination in Fukushima and its unclear impact on long-term radiation exposure in evacuation zones.
  • It assesses the effectiveness of decontamination efforts and identifies key factors for estimating cumulative radiation doses over periods of 15, 30, and 70 years.
  • The research highlights the importance of the external exposure conversion coefficient (EeCC) in determining areas with significant radiation levels post-decontamination, suggesting further investigation into this parameter in Japan.
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Simulation procedure integrated with multi-scale in horizontally regional-urban-point levels and in vertically atmosphere-surface-unsaturated-saturated layers, was newly developed in order to predict the effect of urban geometry and anthropogenic exhaustion on the hydrothermal changes in the atmospheric/land and the interfacial areas of the Japanese megalopolis. The simulated results suggested that the latent heat flux in new water-holding pavement (consisting of porous asphalt and water-holding filler made of steel by-products based on silica compound) has a strong impact on hydrologic cycle and cooling temperature in comparison with the observed heat budget. We evaluated the relationship between the effect of groundwater use as a heat sink to tackle the heat island and the effect of infiltration on the water cycle in the urban area.

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  • * The Kawasaki case study identifies 14 symbiotic relationships among various industries, resulting in the diversion of at least 565,000 tons of waste from incineration or landfills annually.
  • * The collaborative exchanges, facilitated by government support and policies promoting recycling, highlight the significant economic potential, with four major symbioses valued at around 13.3 billion JPY (approximately 130 million USD) each year.
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  • - Japan's Eco-Town Program focuses on integrating Industrial and Urban Symbiosis to maximize economic and environmental benefits by using waste materials from industries and municipalities, leading to the establishment of 26 Eco-Towns across the country.
  • - About 1.65 billion USD was invested in 61 innovative recycling projects, with an average government subsidy of 36%, while at least 107 additional recycling facilities were built without government funding.
  • - The program saw contributions from both the private sector and civil society, with factors like financial subsidies, strict recycling laws, and technological support driving its overall success.
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