A Dynamic Evaluation Method of Urban Ecological Networks Combining Graphab and the FLUS Model

Land, Journal Year: 2022, Volume and Issue: 11(12), P. 2297 - 2297

Published: Dec. 14, 2022

Rapid urbanization has led to landscape fragmentation and habitat loss. As an organic structure integrating green space, urban ecological network can effectively reduce risks protect biodiversity if its connectivity is maintained. Chaoyang District in Beijing facing the challenge of transformational development due excessive urbanization. Taking this district as study area, assessed environmental impact different scenarios on indices explored most relevant strategies for important space patches by combining modeling (Graphab) scenario simulation techniques (FLUS model). The results show that under expansion scenario, probability (PC) decreases 59.7%, while master plan it increases 102.1%. Even ideal region faces structural problems. Patches corridors with high delta probabilities (dPC) are concentrated north, no effective connection between north south. Finally, planning priorities goals proposed through a strategy matrix. Overall, proposes framework decision-makers solve conflicts conservation, especially cities transition.

Language: Английский

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From single to multiple habitat connectivity: The key role of composite ecological networks for amphibian conservation and habitat restoration

Biological Conservation, Journal Year: 2023, Volume and Issue: 289, P. 110418 - 110418

Published: Dec. 16, 2023

Language: Английский

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European blue and green infrastructure network strategy vs. the common agricultural policy. Insights from an integrated case study (Couesnon, Brittany)

Land Use Policy, Journal Year: 2022, Volume and Issue: 120, P. 106277 - 106277

Published: July 13, 2022

Urbanization and agricultural intensification are the main drivers of biodiversity losses through multiple stressors, especially habitat fragmentation, isolation loss. Designing Blue Green Infrastructure Networks (BGIN) has been recommended as a potential tool for land-use planning to increase ecosystem services while preserving biodiversity. All municipalities in France required perform BGIN planning. This article focuses on Couesnon watershed (Brittany, France) participatory process used define analyze five possible pathways future land-cover changes that included implementation BGINs. Impacts were estimated by quantifying change landscape connectivity woodlands, grasslands wetlands. The effectiveness policies was assessed comparing current (2018) those futures. Landscape referred functional three indicator species (Abax parallelepipedus, Maniola jurtina Arvicola sapidus) across features: wetlands, respectively. Results allowed impacts urban be identified terms extent quality. If applied effectively control expansion gray infrastructure, they would help area quality grassland woodland no more than 2%. Agricultural could have impact (−82% +38%) wetland (−49% +47%) connectivity. Current trends hedgerows implied decrease 9.8–33.8%. is not proportional with extent, latter can relatively negative former, inversely. study highlights strategy preserve ecosystems, where human density higher, but threatened intensification.

Language: Английский

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Role of green roofs in urban connectivity, an exploratory approach using landscape graphs in the city of Paris, France

Urban forestry & urban greening, Journal Year: 2022, Volume and Issue: 78, P. 127765 - 127765

Published: Oct. 22, 2022

Language: Английский

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Multiple habitat graphs: how connectivity brings forth landscape ecological processes

Published: Jan. 31, 2024

Habitat connectivity is integral to current biodiversity science and conservation strategies. Originally, the concept stressed role of individual movements for landscape-scale processes. Connectivity determines whether populations can survive in sub-optimal patches (i.e., source-sink effects), complete life cycles relying on different habitat types landscape complementation), benefit from supplementary resources distributed over supplementation). Although past decades have witnessed major improvements modeling, most approaches yet consider multiplicity that a species from. Without doing so, analyses potentially fail meet one their fundamental purposes: revealing how complex lead ecological To bridge this conceptual methodological gap, we propose include multiple spatial graph models connectivity, where nodes traditionally represent single type. Multiple graphs will improve model related processes, they are impacted by land cover changes. In three case studies, use these (i) effects, (ii) supplementation, (iii) complementation urban ecosystems, agricultural landscapes, amphibian networks, respectively. We show help addressing crucial challenges (e.g., sprawl, biological control, climate change) representing more accurately dynamics populations, communities, interactions. A new version Graphab open-source software implements proposed approach, thereby extending ecologist's toolbox fostering alignment between ecology theory practice.

Language: Английский

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Combining multi-species connectivity modelling with expert knowledge to inform the green infrastructure design

Journal for Nature Conservation, Journal Year: 2024, Volume and Issue: 81, P. 126654 - 126654

Published: May 28, 2024

The Canton of Geneva is currently working on defining and mapping its green infrastructure (GI), in order to implement biodiversity protection directives by 2030. Ecological connectivity considered the definition GI, as it a key factor managing species extinction risk. It vital aspect landscape, because can indicate how landscape facilitates or influences wildlife movement. In assess connectivity, animal movement data essential provides precise behavioral information movements organisms. Unfortunately, this kind often missing available only at local scales. Ecologists therefore must deal with lack when trying supply useful spatially explicit ecological models for conservation planning. To help managers their efforts define an alternative rely expert knowledge. We have thus applied structured analytical framework parameterize model combining opinion three most used methods connectivity: graph theory, circuit theory cumulative costs algorithm. By considering selection focal representative different requirements behaviour regional wildlife, maps priority areas promotion were obtained red deer, roe brown hare common toad. estimated principal cross-border corridors scale Greater region, between France Switzerland. Three transboundary high highlighted our maps. localization these principally characterized natural habitats such forests, grasslands freshwater ecosystems, but depends also agricultural areas. barrier Lake Geneva, human barriers are settlements highways that impede displacements all species. Considering highways, effect could be diminished thanks recent construction overpasses. seen close collaboration experts modelers necessary interpreting value land potentially capable promoting connectivity. When implementing will combine field campaigns measure real functionality areas, guarantee success actions.

Language: Английский

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Assessing and Optimizing the Connectivity of the Outdoor Green Recreation Network in Zhengzhou from the Perspective of Green Travel

Land, Journal Year: 2024, Volume and Issue: 13(12), P. 2085 - 2085

Published: Dec. 3, 2024

With the increasing demand for outdoor recreation and fitness, this study aims to assess connectivity of green (OGR) network from perspective travel propose optimization framework. The Point Interest (POI) Area (AOI) datasets OGR spots in Zhengzhou were utilized as primary research materials. A combination GIS spatial analysis Graph index calculation is employed quantify diagnose based on multi-source data (land cover, topography, road network). system cost surface establishment was improved proposed, shifting its focus previous biological migration ecological human improving network. technical process explored presented. results show that: (1) scale, number, distribution are significantly different urban rural areas. Numerous small-scale short-distance recreational paths distributed areas, while a limited number large-scale long-distance situated areas with better natural resources. (2) Compared driving travel, poor when walking cycling. indexes Dg, BC, dPC can be used reflect connection capability, bridging role, contribution each spot overall connectivity. (3) current optimized through 30 new land suitability analysis. will improve by 4%, suitable increased 41. (4) methodologies quantifying optimizing offer valuable references future field.

Language: Английский

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Forest Plantations in Manabí (Ecuador): Assessment of Fragmentation and Connectivity to Support Dry Tropical Forests Conservation

Applied Sciences, Journal Year: 2023, Volume and Issue: 13(11), P. 6418 - 6418

Published: May 24, 2023

In many tropical regions, national forests plantation programs have been promoted. Those plantations frequently contribute to habitat changes. However, the associated effects of forest on fragmentation and landscape connectivity are unclear. From 2008 2018, we examined land use changes, plantations, deforestation Manabí province (Ecuador) provided by Ecuadorian Ministry Environment. Four scenarios were created: (i) uses in 2008, (ii) (iii) 2018 without deforestation, iv) including reforestation. Fragmentation metrics analyzed using ArcGisPro Graphad 2.6 software, respectively. Puma yagouaroundi was selected as reference species. At regional scale, had a significant effect changes during study period. Forests decreased from 33.7% 32.4% between although other natural uses, mostly those involving shrubs, increased almost double (from 2.4% 4.6%). Most affected native this period, most reforested areas covered former agricultural land. number patches average patch size. When considering reforestation, higher than area (58 km2 difference), increasing but with smaller Reforestation links distance, particularly central extreme northeast province. The scenario also for west part Our findings suggest that conservation fragmented patches.

Language: Английский

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A Green Infrastructure Planning Approach: Improving Territorial Cohesion through Urban-Rural Landscape in Vojvodina, Serbia

Land, Journal Year: 2022, Volume and Issue: 11(9), P. 1550 - 1550

Published: Sept. 13, 2022

Spatial and urban planning are directed towards achieving territorial cohesion as one of the sustainable development goals. Considering hybrid concept green infrastructure, this paper aims to provide an “ecological model” in spatial planning. Based on connectivity level analysis between infrastructure elements (green hubs, nodes, gateways dots), application GI guides scenarios. The Voronoi diagrams landscape graph-based principles contribute defining shortest distances elements, which resulted definition significance structural functional arrangement dots matrix rural continuum territory urban-rural three case studies Vojvodina, Serbia (Novi Sad, Subotica, Zrenjanin). As a result study, showed great potential at local by developing them through design with creative artistic order achieve higher visual attractivity, multifunctionality recreation. should be considered indicator goals achievement, field nature conservation social cohesion.

Language: Английский

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Gene flow in the city. Unravelling the mechanisms behind the variability in urbanization effects on genetic patterns.

Peer Community In Ecology, Journal Year: 2024, Volume and Issue: unknown

Published: March 19, 2024

A recommendation of: Paul Savary, Cécile Tannier, Jean-Christophe Foltête, Marc Bourgeois, Gilles Vuidel, Aurélie Khimoun, Hervé Moal, Stéphane Garnier How does dispersal shape the genetic patterns of animal populations in European cities? simulation approach https://doi.org/10.32942/X2JS41

Language: Английский

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