Environmental Conservation最新文献_第8页

A machine learning approach to mapping canopy gaps in an indigenous tropical submontane forest using WorldView-3 multispectral satellite imagery 基于WorldView-3多光谱卫星图像的热带亚热带原始森林冠层间隙机器学习方法研究

IF 2.7 3区环境科学与生态学

Environmental Conservation Pub Date : 2022-08-30 DOI: 10.1017/S0376892922000339

Colbert M. Jackson, E. Adam

{"title":"A machine learning approach to mapping canopy gaps in an indigenous tropical submontane forest using WorldView-3 multispectral satellite imagery","authors":"Colbert M. Jackson, E. Adam","doi":"10.1017/S0376892922000339","DOIUrl":"https://doi.org/10.1017/S0376892922000339","url":null,"abstract":"Summary Selective logging in tropical forests may lead to deforestation and forest degradation, so accurate mapping of it will assist in forest restoration, among other ecological applications. This study aimed to track canopy tree loss due to illegal logging of the important hardwood tree Ocotea usambarensis in a closed-canopy submontane tropical forest by evaluating the mapping potential of the very-high-resolution WorldView-3 multispectral dataset using random forest (RF) and support vector machine (SVM) with radial basis function kernel classifiers. The results show average overall accuracies of 92.3 ± 2.6% and 94.0 ± 2.1% for the RF and SVM models, respectively. Average kappa coefficients were 0.88 ± 0.03 for RF and 0.90 ± 0.02 for SVM. The user’s and producer’s accuracies for both classifiers were in the range of 84–100%. This study further indicates that vegetation indices derived from bands 5 and 6 helped detect canopy gaps in the study area. Both variable importance measurement in the RF algorithm and pairwise feature selection proved useful in identifying the most pertinent variables in the classification of canopy gaps. These findings could allow forest managers to improve methods of detecting canopy gaps at larger scales using remote sensing data and relatively little additional fieldwork.","PeriodicalId":50517,"journal":{"name":"Environmental Conservation","volume":"49 1","pages":"255 - 262"},"PeriodicalIF":2.7,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49008534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 1

Complex spatiotemporal changes in land-use and ecosystem services in the Jeju Island UNESCO heritage and biosphere site (Republic of Korea) 济州岛联合国教科文组织遗产和生物圈地土地利用和生态系统服务的复杂时空变化（大韩民国）

IF 2.7 3区环境科学与生态学

Environmental Conservation Pub Date : 2022-08-11 DOI: 10.1017/S0376892922000285

Jihwan Kim, Heejoon Choi, Wonhyeop Shin, Jiweon Yun, Youngkeun Song

{"title":"Complex spatiotemporal changes in land-use and ecosystem services in the Jeju Island UNESCO heritage and biosphere site (Republic of Korea)","authors":"Jihwan Kim, Heejoon Choi, Wonhyeop Shin, Jiweon Yun, Youngkeun Song","doi":"10.1017/S0376892922000285","DOIUrl":"https://doi.org/10.1017/S0376892922000285","url":null,"abstract":"Summary Jeju Island, designated by UNESCO as a world heritage site, continues to face the anthropogenic pressures of reckless development for regional tourism and economic revitalization purposes. Because land use/land cover (LULC) affects ecosystem services and human well-being, it is crucial to comprehensively identify the causes of changes in LULC based on long-term analyses. This study examined LULC changes on Jeju Island over 47 years from 1973 to 2019 and quantified changes in four ecosystem services: habitat quality, carbon stock, water yield and cumulative viewshed. From 1973 to 1998, forest land increased from 22% to 56%, but these restoration efforts were conducted in grassland, reducing that land type from 42% to 17%. This process increased the areas of highest habitat quality from 68% to 73%, and carbon stock increased from 20 to 30 million tonnes. Between 1998 and 2009, the area of cropland more than doubled from 21% to 44%. As a result, the areas of highest habitat quality decreased from 73% to 49%, and carbon stock decreased from 3.0 million tonnes to 2.3 million tonnes. Our analysis could help stakeholders and policymakers to develop their management planning and improve ecosystem services through restoration and conservation policies on Jeju Island.","PeriodicalId":50517,"journal":{"name":"Environmental Conservation","volume":"49 1","pages":"272 - 279"},"PeriodicalIF":2.7,"publicationDate":"2022-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43314841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 2

ENC volume 49 issue 3 Cover and Back matter ENC第49卷第3期封面和封底

IF 2.7 3区环境科学与生态学

Environmental Conservation Pub Date : 2022-08-08 DOI: 10.1017/s0376892922000315

引用次数: 0

ENC volume 49 issue 3 Cover and Front matter ENC第49卷第3期封面和封面问题

IF 2.7 3区环境科学与生态学

Environmental Conservation Pub Date : 2022-08-08 DOI: 10.1017/s0376892922000303

引用次数: 0

Assessment of the effect of landowner type on deforestation in the Brazilian Legal Amazon using remote sensing data 利用遥感数据评估巴西合法亚马逊地区土地所有者类型对森林砍伐的影响

IF 2.7 3区环境科学与生态学

Environmental Conservation Pub Date : 2022-08-05 DOI: 10.1017/S0376892922000297

A. Cabral, A.E. Laques, C. Saito

{"title":"Assessment of the effect of landowner type on deforestation in the Brazilian Legal Amazon using remote sensing data","authors":"A. Cabral, A.E. Laques, C. Saito","doi":"10.1017/S0376892922000297","DOIUrl":"https://doi.org/10.1017/S0376892922000297","url":null,"abstract":"Summary The Brazilian Legal Amazon contains important reservoirs of forest that are threatened by stakeholders’ behaviour. The Cadastro Ambiental Rural (CAR; Rural Environmental Registry) database was used to define the limits and classes of landowner according to private property size. For each class, we identified the annual forest-cover/cover-loss profile at 2-year intervals from 2000 to 2020 based on Brazilian Annual Land Use and Land Cover Mapping Project (MapBiomas) and Program for Deforestation Monitoring (PRODES) data. The analysis revealed that very large landowners dominate the CAR-registered area and that deforestation is influenced by landowner type. The cumulative contributions to deforestation were 2 916 245.96, 1 234 216.79, 2 871 400.36, 2 805 058.62 and 2 637 485.60 ha for very large landowners, large landowners, medium landowners, small landowners and very small landowners, respectively. Very large landowners (1.7% of the total number of properties) had more forest on their properties but caused the greatest amount of deforestation in total, often associated with agribusiness. Small and very small landowners were more numerous (21.0% and 68.3% of the total number of properties, respectively), but they owned a small total area and contributed less to total deforestation. Property size and landownership asymmetry should be considered in deforestation control policies and commitments to the Sustainable Development Goals agenda.","PeriodicalId":50517,"journal":{"name":"Environmental Conservation","volume":"49 1","pages":"225 - 233"},"PeriodicalIF":2.7,"publicationDate":"2022-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43804470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 2

Integrating human and species habitat preferences in conservation in heterogeneous urban settings 在异质性城市环境中整合人类和物种栖息地偏好

IF 2.7 3区环境科学与生态学

Environmental Conservation Pub Date : 2022-07-28 DOI: 10.1017/S0376892922000248

Heather A. Sander, Cody B. Hodson, Brandon MacDougall

{"title":"Integrating human and species habitat preferences in conservation in heterogeneous urban settings","authors":"Heather A. Sander, Cody B. Hodson, Brandon MacDougall","doi":"10.1017/S0376892922000248","DOIUrl":"https://doi.org/10.1017/S0376892922000248","url":null,"abstract":"Summary Cities are becoming increasingly important to biodiversity conservation, conservation that could also benefit urban people given the importance of nature to human well-being. Urban conservation is challenging, however, given cities’ primary role as human habitats and the need to simultaneously support heterogeneous human and wild species communities in similarly heterogeneous environments. We demonstrate a framework for identifying conservation zones within cities and human and species habitat preferences within them, thereby identifying habitat attributes that management could target to support human well-being and conservation objectives. The framework first categorizes conservation zones within a city, then develops species indicator communities for each zone. Habitat preferences are identified for each indicator community using richness modelling, and human habitat preferences within zones are identified using one of several approaches. Lastly, habitat preferences are compared to identify commonalities and differences within zones. We demonstrate our framework in Iowa City (IA, USA) using songbirds, identifying similarities in human and bird habitat preferences within conservation zones that management could target to support human well-being and species conservation and differences in preferences that could be proactively managed to reduce conflict. This framework can thus identify key habitat attributes and approaches to inform conservation planning targeted to specific settings within cities.","PeriodicalId":50517,"journal":{"name":"Environmental Conservation","volume":"49 1","pages":"234 - 243"},"PeriodicalIF":2.7,"publicationDate":"2022-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47380995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 1

Unregulated sales of fishing nets: consequences and possible solutions in Brazil 不受管制的渔网销售:巴西的后果和可能的解决办法

IF 2.7 3区环境科学与生态学

Environmental Conservation Pub Date : 2022-07-27 DOI: 10.1017/S0376892922000273

Roberto Ferrazi, Guilherme Correia-Silva, M. E. P. Bonan, T. Giarrizzo, Carolina V. Silva, P. Fearnside, Valter M. Azevedo-Santos

引用次数: 1

Terrestrial protected areas do not fully shield their streams from exogenous stressors 陆地保护区并不能完全保护其河流免受外源压力的影响

IF 2.7 3区环境科学与生态学

Environmental Conservation Pub Date : 2022-07-22 DOI: 10.1017/S0376892922000261

Victor Hugo dos Santos Mollmann, S. Santos, G. Fernandes, E. C. Mossolin, Marcelo M. Dalosto, S. Cardoso, O. Prestes, R. Zanella, M. L. Bartholomei-Santos

{"title":"Terrestrial protected areas do not fully shield their streams from exogenous stressors","authors":"Victor Hugo dos Santos Mollmann, S. Santos, G. Fernandes, E. C. Mossolin, Marcelo M. Dalosto, S. Cardoso, O. Prestes, R. Zanella, M. L. Bartholomei-Santos","doi":"10.1017/S0376892922000261","DOIUrl":"https://doi.org/10.1017/S0376892922000261","url":null,"abstract":"Summary Protected areas (PAs) represent a powerful refuge for maintaining and safeguarding biodiversity. Generally, PAs are delineated to protect terrestrial taxa, providing incidental protection to the aquatic ecosystems within their borders. Here, we compare water quality within PAs and non-PAs in southern Brazil, encompassing remnants of the Atlantic Forest biome, to assess whether PAs serve as a buffer from external pressures for aquatic ecosystems within their boundaries. In addition to physicochemical and microbiological water parameters, we analysed 147 pesticide and 31 pharmaceutical compounds in water samples from 33 sites within and outside PAs. The water quality did not differ between PAs and non-PAs but indicated clear pollution from sewage discharges. We found 19 pesticides and five pharmaceuticals in streams within the study area. We detected pesticides in all sampling sites, with the herbicide 2,4-dichlorophenoxyacetic acid present in 91% of them. Our data show that PAs are insufficient means to mitigate the impacts stemming from their catchments, and the running water that reaches their domains already shows signs of anthropogenic interference, which may affect aquatic biodiversity. Protection and management measures require consideration of the whole watershed to protect freshwater habitats and biota.","PeriodicalId":50517,"journal":{"name":"Environmental Conservation","volume":"49 1","pages":"215 - 224"},"PeriodicalIF":2.7,"publicationDate":"2022-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43247888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 0

Hunting sustainability within two eastern Amazon Extractive Reserves – CORRIGENDUM 两个东部亚马逊采掘保护区的可持续性狩猎-勘误表

IF 2.7 3区环境科学与生态学

Environmental Conservation Pub Date : 2022-07-14 DOI: 10.1017/S0376892922000224

Milton José de Paula, E. A. Carvalho, Cintia Karoline Manos Lopes, Reysane de Alencar Sousa, Emerson Luiz Pereira Maciel, Manoela Wariss, Rafaela Barboza, Francisco Chen de Araújo Braga, Daniely Félix-Silva, C. Peres, J. Pezzuti

引用次数: 1

Information about conservation status is more important than species appearance in the species preferences of potential conservation donors 在潜在保护供给者的物种偏好中，保护状况信息比物种外观更重要

IF 2.7 3区环境科学与生态学

Environmental Conservation Pub Date : 2022-07-11 DOI: 10.1017/S037689292200025X

S. Papworth, Polly Curtin

{"title":"Information about conservation status is more important than species appearance in the species preferences of potential conservation donors","authors":"S. Papworth, Polly Curtin","doi":"10.1017/S037689292200025X","DOIUrl":"https://doi.org/10.1017/S037689292200025X","url":null,"abstract":"Summary There are huge differences in the conservation support and attention received by different species, perhaps because of human preferences for specific aesthetic traits, such as body size and colouring. If there are such inherent human preferences, then new flagship species should be aesthetically similar to existing successful flagship species and conservation campaigns should not feature less attractive species. However, cultural preconceptions about species and the covariance of traits make it difficult to determine the role of aesthetic traits. Both of these problems can be overcome with imaginary animals. If preferences for certain species traits are inherent in the human psyche, then the same preferences should be found in both real and imaginary animals. Using an online survey with US participants, we find that aesthetic traits are associated with preferences for real but not imaginary animals. For both real and imaginary animals, small and declining populations are preferred. We therefore suggest that organizations should not reject potential flagship species based on appearance. Consistent preferences for poor conservation status and the ability to use our results to predict donations to real animal species suggest that conservation support for specific species could be encouraged if organizations communicate information regarding population sizes and trends.","PeriodicalId":50517,"journal":{"name":"Environmental Conservation","volume":"49 1","pages":"146 - 154"},"PeriodicalIF":2.7,"publicationDate":"2022-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49041038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 1