Mostrando 4,721 - 4,740 Resultados de 18,145 Para Buscar '"biodiversity"', tiempo de consulta: 0.33s Limitar resultados
  1. 4721
    “…Habitat fragmentation is considered as major threat to biodiversity worldwide. Biodiversity can be described as taxonomic, functional and phylogenetic diversity. …”
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  2. 4722
    “…SIMPLE SUMMARY: With the development of molecular techniques, environmental DNA (eDNA) methods are increasingly being applied to assess marine fish biodiversity. Fish biodiversity survey methods have been difficult to standardize due to the diversity and complexity of reef habitats. …”
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  3. 4723
    “…Because many animal species are undescribed, and because the identification of known species is often difficult, interim taxonomic nomenclature has often been used in biodiversity analysis. By assigning individuals to presumptive species, called operational taxonomic units (OTUs), these systems speed investigations into the patterning of biodiversity and enable studies that would otherwise be impossible. …”
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  4. 4724
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  6. 4726
    “…While considerable research has documented the shifts in biodiversity along urbanization gradients, much less work has focused on how characteristics of dense urban centers, effectively novel environments, influence behavior and biodiversity. …”
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  7. 4727
    “…The demand for timber products is facilitating the degradation and opening up of large areas of intact habitats rich in biodiversity. Logging creates an extensive network of access roads within the forest, yet these are commonly ignored or excluded when assessing impacts of logging on forest biodiversity. …”
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  8. 4728
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  11. 4731
    “…These factors are likely to have biodiversity implications. However, climate‐driven forest ecosystem models used to predict changes to forest structure and composition are not coupled to models used to predict changes to biodiversity. …”
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  12. 4732
    “…Both analyses clearly showed that the A. donax populations of Sardinia island are genetically distinct from those of Italian mainland; AFLPs showed an extremely low genetic biodiversity due to vegetative reproduction, whilst, epi-biodiversity, estimated through MSAP marker, increased within the analyzed populations. …”
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  13. 4733
    “…This is one of the main reasons for biodiversity loss and insect population decline in many regions all over the world. …”
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  14. 4734
    “…In addition to suggesting the immediate coverage of these hotspots under protected area management, our novel biodiversity insights and spatial maps can form the basis for spatial conservation planning, biodiversity monitoring and protection initiatives for the Sundarbans.…”
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  15. 4735
    “…The concept of biological diversity, or biodiversity, is at the core of evolutionary and ecological studies. …”
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  16. 4736
    “…Marine protected areas (MPAs) are a critical defense against biodiversity loss in the world's oceans, but to realize near‐term conservation benefits, they must be established where major threats to biodiversity occur and can be mitigated. …”
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  17. 4737
    “…Research of the past decades has shown that biodiversity is a fundamental driver of ecosystem functioning. …”
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  18. 4738
    “…Agricultural intensification is a well-known driver of biodiversity loss. Crop diversity and its changes over space and time drive land use intensity and impact biodiversity of agricultural landscapes, while meeting the growing demand for human food and nutrition resources. …”
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  19. 4739
    “…On the one hand, it is inconsistent with the biological species concept, which does not allow for interbreeding between species, and on the other hand, it is considered either as an evolutionary process leading to the emergence of new biodiversity or as a cause of biodiversity loss, with conservation implications. …”
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  20. 4740
    “…Since veteran trees are ‘islands’ of high biodiversity, they provide a unique system in which to study the relationship between biodiversity and decomposition of wood. …”
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