Biodiversity data obsolescence and land uses changes.

Biodiversity data obsolescence and land uses changes.
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DOI:
10.7717/peerj.2743
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发表时间:
2016
期刊:
影响因子:
2.7
通讯作者:
Galicia D
Galicia D
中科院分区:
生物学3区
文献类型:
--
作者:
Escribano N;Ariño AH;Galicia D

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生物多样性原始记录(Primary biodiversity records,PBR)在许多科学研究领域都是必不可少的,因为它们记录了生物多样性的时间和空间。然而,人们对PBR质量和适用性的担忧有所增加,特别是来自分类学,地理和采样工作的偏见。尽管如此,数据老化造成的时间偏差受到的关注较少。我们研究的影响,土地利用变化的信息电流,因此数据陈旧,在生物多样性数据库。我们以5公里的分辨率创建了三个时期(1956-1985年,1985-2000年和2000-2012年)的土地利用变化地图。对于每个单元格,我们计算了每个时期内土地利用变化的百分比。然后,我们覆盖了关于小型哺乳动物的分布数据,并将每个数据分类为“非过时”或“过时”,这取决于单元格中土地利用变化的数量,以及数据采样日期或之后是否发生变化。在考虑到纳瓦拉土地使用的变化后,最初的59 677条记录中共有14 528条记录被证明是非过时的。这些过时的数据存在于115的156个细胞分析。此外,至少在过去15年中,一半以上的保存非陈旧记录的牢房没有被查访过。土地利用变化对从生物多样性数据集获得的实际信息及其潜在用途提出了挑战。随着时间的推移,人们可以预期生物记录的可用性和使用会稳步增加,但它们也会随着土地使用的变化而变得陈旧和过时。因此,有必要评估记录的陈旧情况,因为这可能会损害对生物多样性模式的认识和看法。
Primary biodiversity records (PBR) are essential in many areas of scientific research as they document the biodiversity through time and space. However, concerns about PBR quality and fitness-for-use have grown, especially as derived from taxonomical, geographical and sampling effort biases. Nonetheless, the temporal bias stemming from data ageing has received less attention. We examine the effect of changes in land use in the information currentness, and therefore data obsolescence, in biodiversity databases. We created maps of land use changes for three periods (1956–1985, 1985–2000 and 2000–2012) at 5-kilometres resolution. For each cell we calculated the percentage of land use change within each period. We then overlaid distribution data about small mammals, and classified each data as ‘non-obsolete or ‘obsolete,’ depending on both the amount of land use changes in the cell, and whether changes occurred at or after the data sampling’s date. A total of 14,528 records out of the initial 59,677 turned out to be non-obsolete after taking into account the changes in the land uses in Navarra. These obsolete data existed in 115 of the 156 cells analysed. Furthermore, more than one half of the remaining cells holding non-obsolete records had not been visited at least for the last fifteen years. Land use changes challenge the actual information obtainable from biodiversity datasets and therefore its potential uses. With the passage of time, one can expect a steady increase in the availability and use of biological records—but not without them becoming older and likely to be obsolete by land uses changes. Therefore, it becomes necessary to assess records’ obsolescence, as it may jeopardize the knowledge and perception of biodiversity patterns.
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