Landscape Ecology最新文献

{"title":"Landscape structure influences the spatial distribution of urban bird attractiveness","authors":"Andres F. Suarez-Castro, Rachel R. Y. Oh, Ayesha I. T. Tulloch, Aletta Bonn, Richard A. Fuller, Jonathan R. Rhodes","doi":"10.1007/s10980-024-01950-9","DOIUrl":"https://doi.org/10.1007/s10980-024-01950-9","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Context</h3><p>Landscape change affects biological diversity and the distribution of species traits related to spiritual, educational, and recreational benefits people derive from nature. These traits are associated with color, song and behavioral characteristics that influence people's perceptions of how attractive an assemblage is. However, the environmental variables that affect the spatial distribution of traits related to the attractiveness of biological diversity remain unexplored.</p><h3 data-test=\"abstract-sub-heading\">Objectives</h3><p>We tested how landscape structure influences patterns of perceived bird attractiveness (trait diversity associated with colorfulness, behavioral and song categories) across an urbanization gradient.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>We used data from standardized surveys of birds and landscapes within 42 landscape units of 1km² across the city of Brisbane in eastern Australia. We used structural equation modeling to test effects of landscape composition (built infrastructure, percentage of tree cover) and landscape configuration (fragmentation of tree cover) on mean bird community attractiveness. Relationships between individual traits and landscape structure were analyzed using multinomial logistic regression models.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>Our analysis across 82 bird species shows that the relative amount of built infrastructure in a landscape interacts with fragmentation to reduce the overall attractiveness of the landscape’s bird assemblage. However, built areas can exhibit high overall bird attractiveness where there is (1) reduced fragmentation and (2) increased diversity of vegetation structure that provides key habitats for many colorful species with a high diversity of calls. Relationships between bird attractiveness and landscape structure change when they are analyzed at the guild level (insectivores vs frugivores/nectarivores). In addition, body size moderates the effects of landscape structure on song complexity, personality, and color.</p><h3 data-test=\"abstract-sub-heading\">Conclusions</h3><p>Small bodied, colorful and melodious species are negatively affected by built infrastructure and fragmentation. By learning how habitat loss and fragmentation affect the distribution of species-rich, attractive bird assemblages, our findings can inform how urban landscapes might be structured to increase people’s connection with nature.</p>","PeriodicalId":54745,"journal":{"name":"Landscape Ecology","volume":"86 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141930996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Uncovering habitat associations and thresholds—insights for managing breeding waterfowl in Eastern Canada","authors":"Barbara Frei, Amelia R. Cox, Andrea Brown, Matthew E. Dyson, Shawn Meyer, Alan Hanson, Kristina Hick, Scott G. Gilliland, Christine Lepage, Mathieu Tétreault, Christian Roy","doi":"10.1007/s10980-024-01946-5","DOIUrl":"https://doi.org/10.1007/s10980-024-01946-5","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Context</h3><p>Understanding how habitat influences species abundance is crucial in developing ecologically sound wildlife conservation management plans. Exploring habitat associations and ecological thresholds in species’ responses allows for better conservation and management on a landscape-scale.</p><h3 data-test=\"abstract-sub-heading\">Objectives</h3><p>This work aimed to identify habitat drivers and response thresholds of waterfowl and waterbird species’ densities in eastern Canada to support key landscape-level decisions for habitat conservation and wetland management.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>We developed predictive abundance models for 17 species across eastern Canada from 2001 to 2015 using data from four regional surveys and identified areas where prioritizing enhancement of wetlands would increase the breeding density of five priority waterfowl species.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>Habitat associations and spatial abundance patterns varied across species, but most species responded strongly to forest composition, agriculture, and wetland features. Threshold effects occurred and varied among species, yet generally once 14% of a plot was covered in wetlands, positive effects of increased wetland diminished for most species. Our results allow for the targeting of investments in increasing wetland area along portions of eastern Canada that provide the best opportunities to increase breeding densities for priority waterfowl species.</p><h3 data-test=\"abstract-sub-heading\">Conclusions</h3><p>Understanding species-habitat associations and response thresholds allows for landscape management and planning and prioritization of limited resources. We suggest that management and wetland enhancement efforts for waterfowl in eastern Canada should be guided by predictive models and response thresholds of key habitat attributes to best prioritize actions that will have the biggest positive impact on multiple species.</p>","PeriodicalId":54745,"journal":{"name":"Landscape Ecology","volume":"3 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141930993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Identification of landscape features structuring movement connectivity for Namibian elephants","authors":"A. N. Chan, P. Leimgruber, K. Werner, J. Stabach, G. Wittemyer","doi":"10.1007/s10980-024-01957-2","DOIUrl":"https://doi.org/10.1007/s10980-024-01957-2","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Context</h3><p>Human modification of landscapes poses a significant threat to wildlife, particularly in Africa where population growth and land conversion are expected to increase. Habitat loss and fragmentation have led to declines in wildlife populations, highlighting the need to identify and preserve critical habitats, including core use areas and connectivity between them. Most recently, the identification of habitat corridors has become a key objective.</p><h3 data-test=\"abstract-sub-heading\">Objectives</h3><p>Our study objectives are to (1) empirically quantify connectivity across the Kunene—Etosha landscape in Northwestern Namibia using GPS tracking data on wild African elephants, and (2) assess the landscape features (i.e., geologic, biotic, and human-made) influencing connectivity and corridor types (e.g., fast movement corridors versus slow multi-use movement corridors).</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>We used GPS telemetry data from 66 elephants collared in Northwestern Namibia to empirically quantify connectivity using a graph theoretic approach and assess landscape features influencing connectivity. Based on the ‘movescape’ approach, we identify different types of corridors and examined how landscape features differed across these corridors using multiple regression models on locations classified into different types of use categories by machine learning algorithms.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>Our results revealed strong variation in connectivity across the landscape, with paths of high connectivity near water sources between the study areas. We found that factors related to water sources and human presence primarily influenced connectivity. Water holes serve as hubs across the ecosystem for both male and female elephants with lower use areas peripheral to areas with water. Connectivity between Kunene and Etosha National Park was relatively rare among the collared elephants, but we highlight the key areas used to move between the two regions.</p><h3 data-test=\"abstract-sub-heading\">Conclusion</h3><p>Water was the key feature structuring space use, and human presence influenced connectivity between water points, highlighting the importance of landscape planning in relation to limited water sources and human activities. Our results suggest that focusing management efforts on areas where water is limited for both elephants and humans will be important to reduce conflict and maintain ecosystem connectivity.</p>","PeriodicalId":54745,"journal":{"name":"Landscape Ecology","volume":"3 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141968715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Scale of effect of landscape patterns on resource selection by bobcats (Lynx rufus) in a multi-use rangeland system","authors":"Aidan B. Branney, Amanda M. Veals Dutt, Zachary M. Wardle, Evan P. Tanner, Michael E. Tewes, Michael J. Cherry","doi":"10.1007/s10980-024-01944-7","DOIUrl":"https://doi.org/10.1007/s10980-024-01944-7","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Context</h3><p>There is a growing appreciation that wildlife behavioral responses to environmental conditions are scale-dependent and that identifying the scale where the effect of an environmental variable on a behavior is the strongest (i.e., scale of effect) can reveal how animals perceive and respond to their environment. In South Texas, brush management often optimizes agricultural and wildlife management objectives through the precise interspersion of vegetation types creating novel environments which likely affect animal behavior at multiple scales. There is a lack of understanding of how and at what scales this management regime and associated landscape patterns influence wildlife.</p><h3 data-test=\"abstract-sub-heading\">Objectives</h3><p>Our objective was to examine the scale at which landscape patterns had the strongest effect on wildlife behavior. Bobcats (<i>Lynx rufus</i>) our model species, are one of the largest obligated carnivores in the system, and have strong associations with vegetation structure and prey density, two aspects likely to influenced by landscape patterns. We conducted a multiscale resource selection analysis to identify the characteristic scale where landscape patterns had the strongest effect on resource selection.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>We examined resource selection within the home range for 9 bobcats monitored from 2021 to 2022 by fitting resource selection functions which included variables representing landcover, water, energy infrastructure, and landscape metrics (edge density, patch density, and contagion). We fit models using landscape metrics calculated at 10 different scales and compared model performance to identify the scale of effect of landscape metrics on resource selection.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>The scale of effect of landscape metrics occurred at finer scales. The characteristic scale for edge density and patch density was 30 m (the finest scale examined), and the characteristic scale for contagion occurred at 100 m. Bobcats avoided locations with high woody patch density and selected for greater woody edge density and contagion. Bobcats selected areas closer to woody vegetation and water bodies while avoiding herbaceous cover and energy development infrastructure.</p><h3 data-test=\"abstract-sub-heading\">Conclusions</h3><p>A key step in understanding the effect of human development and associated landscape patterns on animal behavior is the identifying the scale of effect. We found support for our hypothesis that resource selection would be most strongly affected by landscape configuration at finer scales. Our study demonstrates the importance of cross-scale comparisons when examining the effects of landscape attributes on animal behavior.</p>","PeriodicalId":54745,"journal":{"name":"Landscape Ecology","volume":"28 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141930994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Graph-theoretic modeling reveals connectivity hotspots for herbivorous reef fishes in a restored tropical island system","authors":"Emily A. Peterson, Courtney E. Stuart, Simon J. Pittman, Cassandra E. Benkwitt, Nicholas A. J. Graham, Yadvinder Malhi, Teva Salmon, Benoit Stoll, Sam J. Purkis, Lisa M. Wedding","doi":"10.1007/s10980-024-01936-7","DOIUrl":"https://doi.org/10.1007/s10980-024-01936-7","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Context</h3><p>Seascape connectivity refers to how the spatial configuration of marine habitats facilitates or hinders the movement of organisms, nutrients, materials or energy. Predicting and ranking potential connectivity among habitat patches for coral reef fishes helps to understand how reef fishes could utilize and connect multiple habitat types through the flow of nutrients, energy and biomass across the wider seascape during foraging movements.</p><h3 data-test=\"abstract-sub-heading\">Objectives</h3><p>To advance a spatially explicit understanding of connectivity linkages within a tropical atoll system by modeling, mapping and quantifying potential seascape connectivity for two locally abundant herbivorous reef fish species, the parrotfish, <i>Chlorurus spilurus</i> (pahoro hohoni or pa’ati pa’apa’a auahi), and the surgeonfish, <i>Acanthurus triostegus</i> (manini)<i>.</i></p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>We applied a two-step modeling approach by first mapping habitat suitability for the focal species. A graph-theoretic modeling technique was then applied to model and measure the contribution of benthic habitat patches to species-specific potential connectivity within the seascape.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>Habitat suitability was higher and less fragmented for <i>C. spilurus</i> than for <i>A. triostegus.</i> Potential ecological connectivity estimates for <i>C. spilurus</i> were higher across the entire seascape, with differences between species likely driven by local-scale benthic habitat patch configuration and species home ranges. Hotspots of ecological connectivity across the atoll were mapped for both species.</p><h3 data-test=\"abstract-sub-heading\">Conclusions</h3><p>Despite advances in the application of graph-theoretic techniques in the coastal environment, few marine conservation and restoration measures currently integrate spatial information on ecological connectivity. This two-step spatial modeling approach holds great potential for rapid application of connectivity modeling at multiple spatial scales, which may predict ecological responses to conservation actions including active habitat restoration.</p>","PeriodicalId":54745,"journal":{"name":"Landscape Ecology","volume":"215 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141881605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Why some countries but not others? Urbanisation, GDP and endemic disease predict global SARS-CoV-2 excess mortality patterns","authors":"Nicholas M. Fountain-Jones, Michael Charleston, Emily J. Flies, Scott Carver, Luke A. Yates","doi":"10.1007/s10980-024-01912-1","DOIUrl":"https://doi.org/10.1007/s10980-024-01912-1","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Context</h3><p>The global impact of the SARS-CoV-2 pandemic has been uneven, with some regions experiencing significant excess mortality while others have been relatively unaffected. Yet factors which predict this variation remain enigmatic, particularly at large spatial scales.</p><h3 data-test=\"abstract-sub-heading\">Objectives</h3><p>We aimed to uncover the key drivers of excess mortality across countries and regions to help understand the factors contributing to the varied impacts of the pandemic worldwide.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>We used spatially explicit Bayesian models that integrate environmental, socio-demographic and endemic disease data at the country level to provide robust global estimates of excess SARS-CoV-2 mortality (P-scores) for the years 2020 and 2021.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>We find that urbanization, gross domestic product (GDP) and spatial patterns are strong predictors of excess mortality, with countries characterized by low GDP but high urbanization experiencing the highest levels of excess mortality. Intriguingly, we also observed that the prevalence of malaria and human immunodeficiency virus (HIV) are associated with country-level SARS-CoV-2 excess mortality in Africa and the Western Pacific, whereby countries with low HIV prevalence but high malaria prevalence tend to have lower levels of excess mortality. While these associations are correlative in nature at the macro-scale, they emphasize that patterns of endemic disease and socio-demographic factors are needed to understand the global dynamics of SARS-CoV-2.</p><h3 data-test=\"abstract-sub-heading\">Conclusions</h3><p>Our study identifies factors associated with variation in excess mortality across countries, providing insights into why some were more impacted by the pandemic than others. By understanding these predictors, we can better inform global outbreak management strategies, such as targeting medical resources to highly urban countries with low GDP and high HIV prevalence to reduce mortality during future outbreaks.</p>","PeriodicalId":54745,"journal":{"name":"Landscape Ecology","volume":"295 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141881604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Uniqueness of tree stand composition and soil microbial communities are related across urban spruce-dominated forests","authors":"Aku Korhonen, Oskar Katavisto, Sylwia Adamczyk, Bartosz Adamczyk, Leena Hamberg","doi":"10.1007/s10980-024-01956-3","DOIUrl":"https://doi.org/10.1007/s10980-024-01956-3","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Context</h3><p>Urban forest soils represent significant reservoirs of biodiversity in cities. Retaining this diversity under urban land-use change requires understanding on how species richness, community assembly and uniqueness of species assemblages are related to local forest characteristics and surrounding landscape structure.</p><h3 data-test=\"abstract-sub-heading\">Objectives</h3><p>Our aim was to assess the significance and relative importance of logging history, tree species composition and urbanization in shaping soil microbial communities across urban spruce-dominated forest landscapes. We investigated responses of microbial diversity from three complementary viewpoints: local diversity, community assembly patterns and community uniqueness.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>We collected soil bacterial and fungal metabarcoding data from 73 spruce-dominated forest sites distributed in three urban centers across southern Finland. We related these data to measurements of logging intensity, tree species composition and degree of urbanization.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>Logging intensity, tree species composition and urbanization affected site-scale microbial diversity, but the effects varied between microbial groups. Only logging intensity had a significant imprint on microbial assembly, and this effect was restricted to bacteria. Relative uniqueness of microbial assemblages at the landscape-scale was coupled with the uniqueness of tree species composition in all microbial groups, and further affected by tree diversity in saprotrophic fungi and urbanization in ectomycorrhizal fungi.</p><h3 data-test=\"abstract-sub-heading\">Conclusions</h3><p>In the context of urban spruce-dominated forests, locally diverse tree stands are not necessarily the same as those that contribute the most to landscape-scale diversity. Identifying and preserving contrasting tree stand structures, which support distinctive soil microbial assemblages, may be the winning strategy in maintaining a wide range of soil microbial diversity.</p>","PeriodicalId":54745,"journal":{"name":"Landscape Ecology","volume":"64 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141887003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Land-cover gradients determine alternate drivers of mammalian species richness in fragmented landscapes","authors":"M. Dennis, J. J. Huck, C. D. Holt, P. da Conceição Bispo, E. McHenry, A. Speak, P. James","doi":"10.1007/s10980-024-01952-7","DOIUrl":"https://doi.org/10.1007/s10980-024-01952-7","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Context</h3><p>Understanding habitat fragmentation is a critical concern for nature conservation and the focus of intense debate in landscape ecology. Resolving the uncertainty around the effects of habitat fragmentation on biodiversity remains an ongoing challenge that requires the successful delineation of multiple patch-landscape interactions.</p><h3 data-test=\"abstract-sub-heading\">Objectives</h3><p>We carried out a regional analysis on species richness of woodland mammals to determine the relative influence of structural, compositional and functional characteristics related to woodland habitat across different land-cover gradients.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>We calculated the Edge-weighted Habitat Index, an area-weighted measure of functional connectivity that incorporates a mechanistic estimate of edge-effects, for interior woodland habitat. We compared its influence on mammalian species richness to that of increasing edge and patch density, landscape diversity, and a habitat-only model, in different contexts of matrix hostility across Northern England in the UK.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>Our results demonstrate the relevance of alternative drivers of species richness resulting from patch-landscape interactions across gradients of matrix hostility. Evidence is provided for positive and negative effects of increasing structural (edge density), functional (connected interior habitat) and compositional (landscape diversity) attributes, varying according to matrix type and intensity. Results were sensitive to dominant land-cover types in the matrix and the scale of observation.</p><h3 data-test=\"abstract-sub-heading\">Conclusion</h3><p>This study provides new insights into fragmentation effects on biodiversity and clarifies assumptions around the relative influence of structural, compositional and functional habitat characteristics on landscape-level species richness. We highlight the presence of thresholds, related to matrix hostility, that determine alternative drivers of species richness in woodland mammals. These drivers, and related thresholds, were sensitive to the scale of observation and landscape context. Landscape decisions aimed at promoting biodiversity should consider sources of matrix hostility and homogeneity at scales relevant to ecological processes of interest.</p>","PeriodicalId":54745,"journal":{"name":"Landscape Ecology","volume":"1 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141881610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Local factors have a greater influence on the abundance of alfalfa weevil and its larval parasitoids than landscape complexity in heterogeneous landscapes","authors":"Alexandre Levi-Mourao, Roberto Meseguer, Filipe Madeira, José Antonio Martinez-Casasnovas, Alejandro C. Costamagna, Xavier Pons","doi":"10.1007/s10980-024-01949-2","DOIUrl":"https://doi.org/10.1007/s10980-024-01949-2","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Context</h3><p>The alfalfa weevil <i>Hypera postica</i> Gyllenhal (Coleoptera: Curculionidae) is one of the most destructive pests of alfalfa worldwide. Both local and landscape-scale factors can significantly influence crop pests, natural enemies, and the effectiveness of biological control services, but the relative influence of these factors is unclear.</p><h3 data-test=\"abstract-sub-heading\">Objectives</h3><p>We investigated the influence of the local variables and surrounding landscape composition and configuration on the abundance of alfalfa weevil, and on the abundance and parasitism rates of its larval parasitoids, <i>Bathyplectes</i> spp.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>We sampled 65 commercial alfalfa fields along the Ebro Basin, Spain, over a period of 3 years, recording the field characteristics and landscape structure at three buffer radii of 250, 500 and 1000 m from the center of each field.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>The abundance of weevil larvae was positively associated with the field perimeter and with the uncut alfalfa surrounding the pipes of the sprinkler irrigation system, but only one configuration variable was positively correlated: the alfalfa edge density. No local characteristics or landscape structures were associated with the abundance of adult weevils. The abundance of <i>Bathyplectes</i> spp. adults was positively associated to local factors such as the densities of alfalfa weevils and aphids. Few landscape structure variables, such as alfalfa edge density and Simpson’s Diversity Index, had explanatory value only at 250 m buffer radius. The rate of larval parasitism was affected by local variables, such as alfalfa weevil abundance and field age.</p><h3 data-test=\"abstract-sub-heading\">Conclusion</h3><p>Our results provide, for the first time in the Mediterranean region and Europe, evidence of the relative importance of landscape structure and local factors on the abundance of the alfalfa weevil and its larval parasitoids, <i>Bathyplectes</i> spp. The strongest influences were based on local characteristics.</p>","PeriodicalId":54745,"journal":{"name":"Landscape Ecology","volume":"79 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141881455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sustainable urban planning to control flood exposure in the coastal zones of China","authors":"Yijing Wu, Jingwei Li, Haoyuan Wu, Yongqiang Duan, Hanru Shen, Shiqiang Du","doi":"10.1007/s10980-024-01951-8","DOIUrl":"https://doi.org/10.1007/s10980-024-01951-8","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Context</h3><p>Sustainable development in coastal zones faces escalating flood risk in the context of climate change and urbanization, and the rapid urban growth in flood zones has been one of the key drivers. Therefore, understanding the Urban Exposure to Flooding (UEF) and its future scenarios is important in coastal zones.</p><h3 data-test=\"abstract-sub-heading\">Objectives</h3><p>The objectives of this study were: (1) to assess the future dynamics of UEFs in China's coastal zones, and (2) to identify a sustainable way of urban planning in controlling the growth of UEFs.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>Future UEFs in coastal China were assessed during 2020–2050 by combining urban expansion model, scenario analysis, and flood exposure assessment. Alternative scenarios were considered of shared socioeconomic pathways (SSPs), representative concentration pathways (RCPs), strategies of urban planning.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>The results show that the 1000-year flood UEFs along coastal China was expected to grow under SSP2-RCP4.5 from 9,879 km² in 2020 to 13,424 (12,997–13,981) km² in 2050, representing an increment of 35.88% (31.56%–41.52%). Alternatively, the strategy of sustainable development planning could reduce the newly added UEF by 16.98% (15.63%–18.67%) in a 1000-year flood scenario.</p><h3 data-test=\"abstract-sub-heading\">Conclusions</h3><p>The findings proved that the ways of urban growth matters in terms of affecting food exposure and risk and flood risk should be incorporated into urban planning for a sustainable landscape. The study could offer methodology and support for sustainable development strategies in reducing future urban flood risk.</p>","PeriodicalId":54745,"journal":{"name":"Landscape Ecology","volume":"22 2 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141881606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}