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| Registros recuperados: 713 | |
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| Ramalho,Werther Pereira; Andrade,Murilo Sousa; Matos,Lucicléia Railene Assis de; Vieira,Lisandro Juno Soares. |
| Despite the historical knowledge on amphibians of the Purus River basin, basic information on assemblages is fragmented, with gaps in knowledge existing at various scales, which limits conservation strategies. This study provides information on the composition, richness and abundance of the amphibian fauna in varzea environments and floating meadows of the oxbow lakes of the Middle Purus River between the Boca do Acre and Pauiní municipalities, Amazonas, Brazil. We sampled six oxbow lakes using forty-seven 200-meter transects, distributed among the "floating meadows," "high varzea" and "low varzea," from April to January 2014. We recorded 59 species, with the family Hylidae being predominant. This amphibian fauna represents approximately 19% of the species... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon; Floodplain; Flood pulse; Diversity; Conservation. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032016000100201 |
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| Benício,Ronildo Alves; Silva,Fernando Rodrigues da. |
| Abstract Although São Paulo state has one of the best known amphibian fauna in Brazil, there are still protected areas for which the species composition remains unknown. Here, we present the first species list of anuran amphibians in Vassununga State Park. This area is one of the last remnants of semideciduous Atlantic Forest and Cerrado in the northeastern region of São Paulo state, southeastern Brazil. To survey species, we visited six sites (two ponds, two streams, and two transects) in December, January, and February of 2014-2015 and 2015-2016, totalizing 18 days of field samplings at each site. We recorded 24 anuran species belonging to four families: Bufonidae (2 species), Hylidae (11 species), Leptodactylidae (10 species), and Microhylidae (1... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anurans; Biodiversity; Cerrado; Atlantic Forest; Species list; Conservation. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000100308 |
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| Daigle, Rémi M.; Monaco, Cristian; Elgin, Ashley K.. |
| Around the world, governments are establishing Marine Protected Area (MPA) networks to meet their commitments to the United Nations Convention on Biological Diversity. MPAs are often used in an effort to conserve biodiversity and manage fisheries stocks. However, their efficacy and effect on fisheries yields remain unclear. We conducted a case-study on the economic impact of different MPA network design strategies on the Atlantic cod (Gadus morhua) fisheries in Canada. The open-source R package that we developed to analyze this case study can be customized to conduct similar analyses for other systems. We used a spatially-explicit individual-based model of population growth and dispersal coupled with a fisheries management and harvesting component. We... |
| Tipo: Text |
Palavras-chave: Cost-benefit analysis; Atlantic Cod; Individual based models; Conservation; Fisheries management. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00690/80169/83235.pdf |
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| Isik, Murat; Yang, Wanhong. |
| A real options model is developed to examine the determinants of farmer participation in the Conservation Reserve Program (CRP). This study contributes to the literature by developing a framework for ex post analysis of uncertainty and irreversibility. It extends the applications of real options models to analyze farmer participation in the CRP. The model incorporates land and owner attributes, and determines whether uncertainty and irreversibility affect the probability of participation. Option values play a significant role in farmer decisions to retire land by reducing the probability of participation. These results have implications for the design and implementation of conservation programs. |
| Tipo: Journal Article |
Palavras-chave: Conservation; CRP; Farmer participation; Land rental payments; Option values; Uncertainty; Agricultural and Food Policy. |
| Ano: 2004 |
URL: http://purl.umn.edu/31113 |
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| Farrell, Terence C.. |
| Economic benefits that arise from conservation farming practices need to be assessed over several years to account for improvements in soil structure and nutrient levels. A gross margin model was used to assess benefits over the eight-year period 1999-2006 for 12 regions in the central west of NSW. The annual benefits from improved soil structure ranged from $2.46 to $12.82 per hectare (ha). A reduction in tractor power produced annual savings in the range of $0.60 to $4.05 per ha. The cost of soil compaction by livestock grazing on crop areas ranged from $3.41 to $14.90 per ha. The break-even time to pay back costs for the conversion of machinery for no-till seeding was two to three seasons. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: No-till; Conservation; Farming; Tillage; Cropping systems; Environmental Economics and Policy; Farm Management. |
| Ano: 2008 |
URL: http://purl.umn.edu/6177 |
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| Mertins, G.. |
| En la vertiente noroeste de la Sierra Nevada de Santa Marta existe desde hace v2 años un amplio programa para la protección del paisaje, que encierra las cuencas del Río Gaira y del Río Manzanares. Se aclaran la necesidad y la aplicación de algunos puntos importantes del programa, como debe realizarse la reparación de los daños más fuertes de la erosión, debidos a talas y quemas continuas de la vegetación. Se intenta una clasificación climática de esta región en base a mediciones de temperaturas y precipitaciones, en realidad efectuadas desde hace pocos años. |
| Tipo: Journal Contribution |
Palavras-chave: Conservation. |
| Ano: 1967 |
URL: http://hdl.handle.net/1834/3302 |
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| Bastiani,Veluma Ialú Molinari De; Lucas,Elaine Maria. |
| The Atlantic Forest is the home to a diverse and threatened fauna of amphibians. However, knowledge on these species is still scarce to many of its ecosystems, such as the Seasonal Forest. This study was aimed at determining the diversity of anurans in Parque Estadual Fritz Plaumann (PEFP), located in the municipality of Concórdia, Santa Catarina, southern Brazil. The PEFP comprises 741 ha, and is the only Conservation Unit of Seasonal Forest in Santa Catarina state. From August 2010 to July 2011 we surveyed frogs fortnightly during four to ten days, from sunset until approximately midnight. Active, audio and visual searches were carried out at breeding sites and favorable areas to meet the species. The sampling effort of the survey was evaluated with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodiversity; Conservation; Frogs; Atlantic Forest; Santa Catarina. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100025 |
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| Fiorillo,Bruno Ferreto; Faria,Carolina Sconfienza; Silva,Bruno Rocha; Martins,Marcio. |
| Abstract: We provide information on the diversity and natural history of anurans from preserved and disturbed habitats in the region of Etá Farm, municipality of Sete Barras, state of São Paulo, Brazil. The region is covered by rainforest and plantations of banana and peach palm. From April, 2013 to March, 2014 we sampled amphibians mainly with pitfall traps with drift fences and visual and auditory surveys. A total of 9813 individuals of 36 species of anurans from nine families were recorded in this study. A larger number of species was found in forests (29 species), followed by peach palm plantations (21 species), and banana plantations (17 species). The areas of peach palm plantation and forests showed the greatest similarity in species composition. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rainforest; Banana plantation; Peach palm plantation; Reproductive phenology; Reproductive mode; Conservation. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032018000400301 |
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| Brandão,José Henrique S. G.; Rodrigues,Nureyev F.; Eguiluz,Maria; Guzman,Frank; Margis,Rogerio. |
| Abstract Araucaria angustifolia is endemic to southern Brazil. Known as Brazilian pine, A. angustifolia is the only native conifer species with economic and social relevance in this country. Due to massive exploitation, it has suffered a significant population decline and currently is classified as critically endangered. This encouraged the scientific community to investigate genetic features in Brazilian pine to increase resources for management and preservation. In this work, RNA-Seq data was used to determine the complete nucleotide sequence of the A. angustifolia chloroplast genome (cpDNA). The cpDNA is 146,203 bp in length and contains 122 genes, including 80 protein-coding genes, 5 ribosomal RNA genes, and 37 tRNA genes. Coding regions comprise... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazilian pine; Plastid; Genome; CpDNA; Conservation. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572019000400671 |
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| Majer,Jonathan D.; Recher,Harry F.. |
| Vast areas of Brazil are being planted to Eucalyptus in order to provide renewable sources of timber, charcoal and cellulose. Although the rapid growth and productivity of various Eucalyptus species undoubtedly relaxes the pressure on logging of native forests, there are ecological costs. Firstly, some eucalypt species are vulnerable to pest outbreaks. A large number of native Lepidoptera, Coleoptera and leaf-cutting ants (Atta spp.), some of which have become pests, have been found on eucalypts growing in Brazil. Probably, the diverse myrtaceous flora of South America supports a fauna that can adapt to the introduced Eucalyptus species. Secondly, the leaf litter produced under Eucalyptus plantations differs substantially from that of native forests both... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insecta; Biodiversity; Conservation; Eucalyptus; Plantations; Pests. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80591999000200001 |
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| Registros recuperados: 713 | |
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