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Abstract Management of animal populations requires spatially explicit knowledge of movement corridors, such as those used during seasonal migrations. Global Positioning System (GPS) tracking data allow for mapping of corridors fro...
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Abstract Management of animal populations requires spatially explicit knowledge of movement corridors, such as those used during seasonal migrations. Global Positioning System (GPS) tracking data allow for mapping of corridors from directly observed movements, but such tracking data are absent for many populations. We developed a novel statistical corridor modelling approach that predicts movement corridors from cost‐distance models fit directly to migration tracking data. Unlike existing predictive approaches, this does not require the ad hoc transformation of habitat suitability surfaces into resistance surfaces. We tested the ability of the approach to recover parameters used to generate simulated movements. We then used GPS data from three migrating mule deer Odocoileus hemionus herds in Idaho and Wyoming to model corridors as a function of elevation, slope, aspect, percent shrub, date of peak green‐up, snow‐off date and human footprint. We assessed the predictive ability of the fitted models using validation tracks from the same herd as well as from the other herds. The approach reproduced parameters used to generate the simulated movements, predicted the corridors used by migratory populations, and described the direction, magnitude and confidence levels of the effects of environmental variables on corridors. Within‐herd validation indicated that fitted corridor models are more accurate at predicting migration corridors than null models, and cross‐herd validation indicated that fitted models for some herds accurately predicted the observed migrations of other herds. In addition to the practical benefit of mapping corridors for management, our statistical corridor modelling framework sets the stage for evaluating fundamental questions about the fitness trade‐offs, navigation, learning, fidelity and movement constraints that influence migratory and other corridor‐generating behaviour. Models of predictive corridors can inform management and planning for the conservation of migrations across taxa, including the potential restoration of corridors. Our corridor modelling approach is also readily applied to non‐migratory animal movements.
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The spatial distribution of biodiversity has specific patterns in urban environments. The aim of this study was to compare the ecological profiles of plants in man-made traffic corridors and natural river corridors in the city of ...
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The spatial distribution of biodiversity has specific patterns in urban environments. The aim of this study was to compare the ecological profiles of plants in man-made traffic corridors and natural river corridors in the city of Vantaa. The number of corridor species represented 76.3 % of Vantaa's total flora, even though corridors covered only 2.7 % of the city area. Corridor plants are mostly generalist species with wide ecological niches, and have ruderal and competitor life-strategies, while plants without occurrences in corridors are habitat specialists and species with narrow ecological niches. The conservation value of non-corridor habitats arises from the rarity of species, and the representation of the original boreal nature, while corridors contribute to the total diversity of species. The potential of corridors in urban conservation has not been fully appreciated.
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The alpine regions of Tibet are biogeographically unique and highly biodiverse. As the political, economic, and cultural center of Tibet, the city of Lhasa's population growth and economic development have further weakened the reg...
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The alpine regions of Tibet are biogeographically unique and highly biodiverse. As the political, economic, and cultural center of Tibet, the city of Lhasa's population growth and economic development have further weakened the region's already fragile ecological environment. Coordinating relationships between stable economic development, sustained population growth, rational resource use, and environmental protection has become an urgent issue. This paper establishes an ecological resistance surface based on the ecological resistance factor index to evaluate Lhasa's ecological security level. The obtained results show that the city's ecological security level is good, with high security level in the north, northwest, and northeast, and low-level in the south and the middle of city. High-level ecological security areas accounted for 34.5% of the city's total area, and low-level areas accounted for 9.0%. The overall Moran's I index of the city's ecological security was 0.518. According to a LISA clustering chart, Lhasa's ecological security grades are mainly high-high (HH) and low-low (LL). These two grades showed an apparent faky spatial clustering in the city. We elected eight large-scale nature reserves in the city as ecological sources, constructed a resistance surface of the ecological accumulation of ecological sources, used the MCR (minimum cumulative resistance) model and gravity model to extract potential ecological corridors, and fnally identifed potentially important ecological corridors. A total of 51 ecological nodes and 80 potential ecological corridors were extracted, with a total length of about 3449.7 km. The length of the primary and secondary corridors accounted for 32.32% of the total length. Combining the development of Lhasa's ecological economy with tourism and cultural industry planning, a layout of ecological network model with one ring and three belts is proposed. An ecological space development strategy of agglomeration within the ring and axial drive should be implemented. This study provides a decision-making reference for the spatial layout of the ecological industry in Lhasa.
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Important for promoting the integrated protection and systematic management of mountains, rivers, forests, farmlands, lakes, grasslands, and sandy areas, ecological networks form the backbone of the regional ecological security pa...
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Important for promoting the integrated protection and systematic management of mountains, rivers, forests, farmlands, lakes, grasslands, and sandy areas, ecological networks form the backbone of the regional ecological security pattern. An improved morphological spatial pattern analysis coupled with a minimum cumulative resistance model (MSPA-MCR) based on multi-source data was used to study, on a provincial scale, the ecological security pattern of Ningxia, an ecologically fragile region in the upper reaches of the Yellow River in China. The results show the following: (1) A reasonable classification of ecological sources and ecological corridors is key to constructing hierarchical ecological networks. Classifying ecological sources by replacing patch areas with energy factors and identifying the importance of ecological corridors by modifying the gravity model with the energy factors proposed in this paper could improve the rationality of the hierarchical structure division of ecological networks. (2) Grassland as the substrate vegetation type is an important ecological source type in arid and semi-arid ecologically fragile areas, and forests and lake wetlands are the main ecological source types in mountainous areas and oasis areas, respectively. The study area was located in the arid-semi-arid transitional area, with a variety of ecological types, such as mountain, oasis, and desert. Therefore, the complex ecological source types of forest-grassland-wetland appear in some areas. (3) There are 45 ecological patch groups that can be classified as ecological sources in Ningxia, including 10 primary source groups. The number of primary source groups is small, and their spatial distribution is unbalanced. There are two categories of ecological corridors, the river corridor and the mountain corridor, and the network connectivity is poor. (4) The ecological network structure of Ningxia is presented as an ecological security structure consisting of one belt, three screens, three corridors, and five clusters, forming a hierarchical nested ecological network security structure system.
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Optimization of landscape patterns in urbanizing areas is important for landscape planning, thus improving regional ecological security and human sense of beauty to environment. In this study, we integrated a variety of methods to...
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Optimization of landscape patterns in urbanizing areas is important for landscape planning, thus improving regional ecological security and human sense of beauty to environment. In this study, we integrated a variety of methods to optimize landscape patterns in Xianghe Segment of China's Grand Canal (XSCGC) based on the principles of landsenses ecology. The plan scheme consisted of a spatial configuration of key ecological elements, called one point, one axis, two cores, multicorridors, and multidemonstrations. The ecological corridor system was arranged in the plan area to reverse ecological barrier effects induced by urban infrastructure and to improve connections between landscape units. The plan area was divided into 11 ecological function zones for management, protection, and development purposes. Seven ecological control indices were proposed corresponding to an ecological core and ecological developing areas to ensure ecological security. This landscape pattern optimization scheme will help achieve harmonious development of the socio-economic and eco-environment for the plan area in the future.
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The fragmentation of landscapes, induced by the growing urbanisation, is a major cause of biodiversity loss. Ecological corridors are landscape elements that make up for the negative effects of habitat fragmentation in agricultura...
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The fragmentation of landscapes, induced by the growing urbanisation, is a major cause of biodiversity loss. Ecological corridors are landscape elements that make up for the negative effects of habitat fragmentation in agricultural or natural landscapes. However, their effectiveness have been rarely assess in an urban context. To do so, we analysed shrews in woodlots, corridors and domestic gardens that are connected or disconnected from a corridor. Indeed, these mammals are very sensitive to fragmentation and could play an important ecological role even in small and isolated areas such as domestic gardens. Ninety-seven shrews, from three species were trapped. In our study, Sorex coronatus, Sorex minutus and Crocidura russula were not widely distributed and mainly occurred in woodlots, corridors and connected gardens. In gardens, shrew occurrences were mainly determined by landscape configuration with negative effects of the distance to the corridor and the distance to the woodlot, stronger for C.russula than Sorex species. At the local scale, garden management and vegetation showed a positive effect mainly for Sorex species. The quality of gardens seems good enough to permit the co-occurrence of several species of shrews and thus competition was not identified as a major process for determining the occurrence. We showed that, as in other ecosystems, ecological corridors in urban context can play an effective role for the distribution of organisms with low dispersal capabilities and should be develop in planning strategies.
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The counties have experienced urban expansion and landscape pattern fragmentation. As carriers of new urbanization, the balanced development between urban expansion and landscape connectivity in the counties needs to be emphasized...
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The counties have experienced urban expansion and landscape pattern fragmentation. As carriers of new urbanization, the balanced development between urban expansion and landscape connectivity in the counties needs to be emphasized. The uncontrolled expansion of land should be discouraged and planners need to clarify land use expansion patterns. Using Changsha County as the study area, the characteristics of the landscape pattern between 2000 and 2020 were analyzed. The morphological spatial pattern analysis and landscape connectivity method (CMSPACI), as well as the minimum cumulative resistance (MCR) model, was used to construct the ecological network. We also explored the most appropriate corridor width using the buffer zone to guide future land use planning and ecological network planning. The results show that based on CMSPACI the total area of ecological sources identified was 304.91 km2, encompassing a large area of forest parks. The total length of the 25 ecological corridors identified by the MCR model was 431.97 km. Ecological sources and corridors are missing in the central region; so, their pattern was optimized using landscape connectivity and the absence of location as selection criteria. The optimized network indices showed significant improvement. The width of the ecological corridors should be controlled in order to be in the range of 30 m to 50 m to maximize the effect of the corridors on species dispersal and migration. Our proposed research framework for the construction and optimization of EN in Changsha County can provide ideas to balance the contradictions between urban expansion and landscape connectivity in Changsha County.
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This paper analyses landscape representativeness within the ecological corridor network linking Natura 2000 areas in Poland. The criteria used to designate the network did not include landscape representativeness. Nevertheless, th...
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This paper analyses landscape representativeness within the ecological corridor network linking Natura 2000 areas in Poland. The criteria used to designate the network did not include landscape representativeness. Nevertheless, the selection of areas covered by the network was found to be adequate to preserve landscape diversity in Poland. The selected areas include the most valuable parts of various landscape types.
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The establishment of ecological security patterns (ESPs) represents a significant paradigm shift in the approach to sustainable development. ESPs aim to reconcile the typically conflicting interests of ecological conservation and ...
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The establishment of ecological security patterns (ESPs) represents a significant paradigm shift in the approach to sustainable development. ESPs aim to reconcile the typically conflicting interests of ecological conservation and economic growth by guaranteeing the sustainability of critical ecosystem services and preserving the ecological integrity of the region while promoting socio-economic development. The primary objective of ESPs is to achieve a balanced and harmonious relationship between human society and the natural environment. The Qiandongnan Ecotourism Area (QEA) located in Southwest China is renowned for its high biodiversity; however, the ecological environment in the region is highly fragile. In light of this, there is an urgent need to establish ESPs for QEA that can promote ecological protection and sustainable economic development. In this study, we used land-use and land-cover change data and human disturbance factors to identify the ESPs of the Qiandongnan Ecotourism Area (QEA), employing the InVEST model and Circuit Theory. Our results revealed that (1) the ecological quality of the study area is relatively high, with high-quality habitat areas covering 19,554.76 km2, which account for approximately 64.57% of the study area and the overall ecological environment is in a healthy condition; (2) the total area of ecological sources covers approximately 17,616.27 km2, accounting for approximately 58.17% of the study area, primarily distributed in Liping, Rongjiang, and Congjiang, which respectively account for 16.28%, 12.44%, and 11.86% of the total ecological source area; (3) the ESPs are composed of 13 key ecological nodes, 17 ecological corridors (with a length of approximately 1474.47 km), and 21 ecological source clusters. The ecological corridors are distributed in a ring shape, connecting various ecological nodes and sources along mountains, forests, rivers, and valleys. These findings provide a theoretical foundation for the protection of the ecological system’s integrity and the development of social and economic activities in the QEA.
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Corridors are special patches with narrow and long shape, and often have the functions as transportation, protection, resources and aesthetics. Corridors in the study area can be classified into 8 types, with a total length of 516...
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Corridors are special patches with narrow and long shape, and often have the functions as transportation, protection, resources and aesthetics. Corridors in the study area can be classified into 8 types, with a total length of 5167.2 km, and corridor density of 1.25 km/km~2. The corridors are mainly composed of irrigation and drainage canals, the total length of which is 2794 km, about 54.1/100 of all the corridors. The corridors have segmented the landscape, and changed the original situation of the natural landscapes. The types of corridors are closely related to the landscape types they are distributed in. Canals are mainly distributed in the wetland landscapes, while roads are mainly in the built-up area. Dikes are always along rivers or coastlines. The corridors are most densely distributed wherever human activity oc- curs most frequently, such as in the artificial wetlands of paddy fields.
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