Cost-efficiency of subsampling protocols to evaluate oribatid-mite communities in an Amazonian savanna
Sampling oribatid mites in large areas using conventional methods is expensive, time-consuming, and this constrains their use in environmental monitoring programs. We used samples collected in 38 plots of 3.75 ha spread over 30,000 ha in an Amazonian savanna to evaluate the reduction in costs and pe...
| Autor principal: | Santos, Evanira M.R. |
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| Outros Autores: | Franklin, E., Magnusson, William Ernest |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Biotropica
2020
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| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/18518 |
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oai:repositorio:1-18518 |
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oai:repositorio:1-18518 Cost-efficiency of subsampling protocols to evaluate oribatid-mite communities in an Amazonian savanna Santos, Evanira M.R. Franklin, E. Magnusson, William Ernest Biodiversity Biomonitoring Cost-benefit Analysis Laboratory Method Mite Sampling Savanna Soil Fauna Species Inventory Taxonomy Amazonia South America Acari Arthropoda Oribatida Sampling oribatid mites in large areas using conventional methods is expensive, time-consuming, and this constrains their use in environmental monitoring programs. We used samples collected in 38 plots of 3.75 ha spread over 30,000 ha in an Amazonian savanna to evaluate the reduction in costs and person-hours in sampling and sorting and to elaborate cost-effective protocols. Ten samples per plot were collected and extracted using a Berlese-Tullgren apparatus. In the laboratory, samples were reduced to 50, 25, 12.5, and 6.25 percent of the initial content. Field-effort reduction was estimated by reducing the number of subsamples per plot. Dissimilarity matrices were generated using Bray-Curtis, Sørensen, and Chao-Sørensen indices. Correlations between each reduced-effort dissimilarity matrix and 100 or 50 percent sorting were used as an index of how much information was retained in reduced-effort sampling, and could still be used in multivariate analyses. The effects of most predictor variables on mite composition were detected in data based on every level of sample reduction. The intensive sampling was insufficient to reveal the full oribatid-mite fauna in the savanna; as more plots were sampled, more species were recorded. Our data indicate subsampling protocols for biodiversity assessment of oribatid mites in savanna that increase field and laboratory efficiency, and optimize both taxonomic and ecological aspects of the investigation. © 2008 The Author(s). 2020-06-15T22:02:01Z 2020-06-15T22:02:01Z 2008 Artigo https://repositorio.inpa.gov.br/handle/1/18518 10.1111/j.1744-7429.2008.00425.x en Volume 40, Número 6, Pags. 728-735 Restrito Biotropica |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Biodiversity Biomonitoring Cost-benefit Analysis Laboratory Method Mite Sampling Savanna Soil Fauna Species Inventory Taxonomy Amazonia South America Acari Arthropoda Oribatida |
| spellingShingle |
Biodiversity Biomonitoring Cost-benefit Analysis Laboratory Method Mite Sampling Savanna Soil Fauna Species Inventory Taxonomy Amazonia South America Acari Arthropoda Oribatida Santos, Evanira M.R. Cost-efficiency of subsampling protocols to evaluate oribatid-mite communities in an Amazonian savanna |
| topic_facet |
Biodiversity Biomonitoring Cost-benefit Analysis Laboratory Method Mite Sampling Savanna Soil Fauna Species Inventory Taxonomy Amazonia South America Acari Arthropoda Oribatida |
| description |
Sampling oribatid mites in large areas using conventional methods is expensive, time-consuming, and this constrains their use in environmental monitoring programs. We used samples collected in 38 plots of 3.75 ha spread over 30,000 ha in an Amazonian savanna to evaluate the reduction in costs and person-hours in sampling and sorting and to elaborate cost-effective protocols. Ten samples per plot were collected and extracted using a Berlese-Tullgren apparatus. In the laboratory, samples were reduced to 50, 25, 12.5, and 6.25 percent of the initial content. Field-effort reduction was estimated by reducing the number of subsamples per plot. Dissimilarity matrices were generated using Bray-Curtis, Sørensen, and Chao-Sørensen indices. Correlations between each reduced-effort dissimilarity matrix and 100 or 50 percent sorting were used as an index of how much information was retained in reduced-effort sampling, and could still be used in multivariate analyses. The effects of most predictor variables on mite composition were detected in data based on every level of sample reduction. The intensive sampling was insufficient to reveal the full oribatid-mite fauna in the savanna; as more plots were sampled, more species were recorded. Our data indicate subsampling protocols for biodiversity assessment of oribatid mites in savanna that increase field and laboratory efficiency, and optimize both taxonomic and ecological aspects of the investigation. © 2008 The Author(s). |
| format |
Artigo |
| author |
Santos, Evanira M.R. |
| author2 |
Franklin, E. Magnusson, William Ernest |
| author2Str |
Franklin, E. Magnusson, William Ernest |
| title |
Cost-efficiency of subsampling protocols to evaluate oribatid-mite communities in an Amazonian savanna |
| title_short |
Cost-efficiency of subsampling protocols to evaluate oribatid-mite communities in an Amazonian savanna |
| title_full |
Cost-efficiency of subsampling protocols to evaluate oribatid-mite communities in an Amazonian savanna |
| title_fullStr |
Cost-efficiency of subsampling protocols to evaluate oribatid-mite communities in an Amazonian savanna |
| title_full_unstemmed |
Cost-efficiency of subsampling protocols to evaluate oribatid-mite communities in an Amazonian savanna |
| title_sort |
cost-efficiency of subsampling protocols to evaluate oribatid-mite communities in an amazonian savanna |
| publisher |
Biotropica |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/18518 |
| _version_ |
1787141153514061824 |
| score |
11.755432 |