Natureza & Conservacao最新文献_第7页

Grassland degradation and restoration: a conceptual framework of stages and thresholds illustrated by southern Brazilian grasslands 草原退化和恢复：以巴西南部草原为例的阶段和阈值概念框架

Natureza & Conservacao Pub Date : 2015-07-01 Epub Date: 2015-09-21 DOI: 10.1016/j.ncon.2015.08.002

Bianca O. Andrade , Christiane Koch , Ilsi I. Boldrini , Eduardo Vélez-Martin , Heinrich Hasenack , Julia-Maria Hermann , Johannes Kollmann , Valério D. Pillar , Gerhard E. Overbeck

{"title":"Grassland degradation and restoration: a conceptual framework of stages and thresholds illustrated by southern Brazilian grasslands","authors":"Bianca O. Andrade , Christiane Koch , Ilsi I. Boldrini , Eduardo Vélez-Martin , Heinrich Hasenack , Julia-Maria Hermann , Johannes Kollmann , Valério D. Pillar , Gerhard E. Overbeck","doi":"10.1016/j.ncon.2015.08.002","DOIUrl":"https://doi.org/10.1016/j.ncon.2015.08.002","url":null,"abstract":"<div><p>Land degradation is a complex concept that integrates different aspects, including changes in soil conditions, biodiversity, productivity and socio-economic implications, compared to a reference state. We propose a new conceptual framework to analyze degradation stages and restoration thresholds in species-rich natural grasslands. The framework integrates different degradation stages with their respective thresholds and describes key processes of land-use change that lead to certain stages and thresholds. Specifically, we discuss two scenarios of grassland degradation, i.e. unsuitable grassland management and complete change of land use, sometimes followed by spontaneous recovery. We illustrate the framework with the case of south Brazilian grasslands, which are rich in biodiversity, but suffer from a series of degradation processes and are poorly considered from a conservation perspective. The conceptual framework can be applied by studies on degradation and restorability of tropical and subtropical grasslands after changes in management or transition to other land use; it will facilitate decisions on alternative management and conservation.</p></div>","PeriodicalId":49776,"journal":{"name":"Natureza & Conservacao","volume":"13 2","pages":"Pages 95-104"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.ncon.2015.08.002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72080500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 144

Pulling the plug: strategies to preclude expansion of dams in Brazilian rivers with high-priority for conservation 拔掉插头:防止水坝在巴西河流中扩张的策略，具有高度优先的保护

Natureza & Conservacao Pub Date : 2015-07-01 DOI: 10.1016/J.NCON.2015.11.008

I. Affonso, R. Azevedo, Natália C. L. Santos, R. M. Dias, A. Agostinho, L. Gomes

引用次数: 20

Species extinction risk might increase out of reserves: allowances for conservation of threatened butterfly Actinote quadra (Lepidoptera: Nymphalidae) under global warming 在全球变暖的背景下，物种灭绝的风险可能会增加:保护濒危蝴蝶放线虫(鳞翅目:蛱蝶科)

Natureza & Conservacao Pub Date : 2015-07-01 DOI: 10.1016/J.NCON.2015.11.009

T. Sobral‐Souza, R. Francini, M. Lima-Ribeiro

引用次数: 21

Grassland degradation and restoration: a conceptual framework of stages and thresholds illustrated by southern Brazilian grasslands 草地退化与恢复:以巴西南部草原为例的阶段和阈值概念框架

Natureza & Conservacao Pub Date : 2015-07-01 DOI: 10.1016/J.NCON.2015.08.002

B. Andrade, C. Koch, I. Boldrini, E. Vélez‐Martin, H. Hasenack, J. Hermann, J. Kollmann, V. Pillar, G. Overbeck

引用次数: 140

Assessing the importance of riparian zones conservation for leaf decomposition in streams 评估河岸带保护对溪流中树叶分解的重要性

Natureza & Conservacao Pub Date : 2015-07-01 DOI: 10.1016/J.NCON.2015.11.011

Cinthia G. Casotti, W. Kiffer, L. Costa, J. Rangel, Lorena C. Casagrande, M. Moretti

引用次数: 34

Protected areas effectiveness in maintaining viable giant anteater (Myrmecophaga tridactyla) populations in an agricultural frontier 保护区在农业前沿维持巨食蚁兽(食蚁兽)生存种群的有效性

Natureza & Conservacao Pub Date : 2015-07-01 DOI: 10.1016/J.NCON.2015.08.001

M. F. Diniz, D. Brito

引用次数: 18

Supporting underrepresented forests in Mesoamerica 支持中美洲代表性不足的森林

Natureza & Conservacao Pub Date : 2015-07-01 DOI: 10.1016/J.NCON.2015.02.001

F. Albuquerque, Blas M. Benito, P. Beier, M. Assunção-Albuquerque, L. Cayuela

引用次数: 17

Policy reversals do not bode well for conservation in Brazilian Amazonia 政策的逆转对巴西亚马逊地区的保护来说并不是一个好兆头

Natureza & Conservacao Pub Date : 2015-07-01 DOI: 10.1016/J.NCON.2015.11.006

J. Campos‐Silva, Sinomar Ferreira da Fonseca Junior, C. Peres

引用次数: 13

Measuring the variability of the drosophilid assemblages associated with forests of the Brazilian savanna across temporal and spatial scales 测量与巴西热带稀树草原森林相关的果蝇组合的时空变异性

Natureza & Conservacao Pub Date : 2015-07-01 DOI: 10.1016/J.NCON.2015.11.005

R. A. Mata, F. Roque, R. Tidon

引用次数: 6

Supporting underrepresented forests in Mesoamerica 支持中美洲代表性不足的森林

Natureza & Conservacao Pub Date : 2015-07-01 Epub Date: 2015-03-03 DOI: 10.1016/j.ncon.2015.02.001

Fábio Suzart de Albuquerque , Blas Benito , Paul Beier , Maria José Assunção-Albuquerque , Luis Cayuela

{"title":"Supporting underrepresented forests in Mesoamerica","authors":"Fábio Suzart de Albuquerque , Blas Benito , Paul Beier , Maria José Assunção-Albuquerque , Luis Cayuela","doi":"10.1016/j.ncon.2015.02.001","DOIUrl":"https://doi.org/10.1016/j.ncon.2015.02.001","url":null,"abstract":"<div><p>The third largest Biodiversity Hotspot of the world, Mesoamerican forests are declining due to human pressures. Based on species distribution models calibrated for 1224 native tree species in Mesoamerica, we identified high-value forest conservation areas at the resolution of a 10km×10km cells using the Zonation Reserve Selection software, and investigated whether these high-value forest conservation areas are well represented by the World Database on Protected Areas network. We had three key findings. First, dry forest is the least protected biome in Mesoamerica (4.5% protected), indicating that further action to safeguard this biome is warranted. Secondly, the poor overlap between protected areas and high-value forest conservation areas found herein may provide evidence that the establishment of protected areas may not be fully accounting for tree priority rank map. Third, high percentages of forest cover and high-value forest conservation areas still need to be represented by the protected areas network. Because deforestation rates are still increasing in this region, Mesoamerica needs funding and coordinated action by policy makers, national and local governmental and non-governmental organizations, conservationists and other stakeholders.</p></div>","PeriodicalId":49776,"journal":{"name":"Natureza & Conservacao","volume":"13 2","pages":"Pages 152-158"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.ncon.2015.02.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72080448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 17