Conserving the stage: climate change and the geophysical underpinnings of species diversity.
Conserving the stage: climate change and the geophysical underpinnings of species diversity.
复制标题
DOI：
10.1371/journal.pone.0011554
复制
发表时间：
2010-07-14
期刊：
影响因子：
3.7
通讯作者：
Ferree CE
中科院分区：
文献类型：
--
作者：
Anderson MG;Ferree CE
自然资源保护主义者提出了适应气候变化的方法，假设物种分布主要由气候变量来解释。关键思想是利用对物种与气候关系的理解来绘制走廊地图并确定动物区系稳定或物种高周转的区域。另一种方法是采用进化时间尺度，并最终询问哪些因素控制总体多样性，以便从长远来看，物种总丰富度的主要驱动因素可以得到保护。在单一气候区域内，即涵盖美国东北部和加拿大沿海地区的温带地区，我们假设地质因素在解释多样性模式时可能优先于气候。如果地球物理多样性确实推动了区域多样性，那么保护地球物理环境可能会提供一种在当前和未来气候下保护多样性的保护方法。在这里，我们使用全面的新空间数据集测试了地质学对美国 14 个州和加拿大三个省物种多样性的预测效果。物种多样性对 23 个地球物理和气候变量的所有可能组合的线性回归结果表明，有四个地球物理因素：地质类别的数量、纬度、海拔范围和钙质基岩的数量，可以准确地预测物种多样性（adj. R2 = 0.94）。为了确认物种与地质的关系，我们对 885 个稀有物种使用 18,700 个位置点进行了独立测试，发现 40% 的物种仅限于单一地质。此外，每个地质类别支持 5-95 个特有物种，卡方检验证实钙质基岩和极端海拔的稀有物种比偶然预期的要多得多 (P<0.0001)，有力地证实了回归模型。我们的结果表明，保护地球物理环境将为当前和未来的生物多样性保留舞台，并且可能是物种层面预测的有力替代方案。
Conservationists have proposed methods for adapting to climate change that assume species distributions are primarily explained by climate variables. The key idea is to use the understanding of species-climate relationships to map corridors and to identify regions of faunal stability or high species turnover. An alternative approach is to adopt an evolutionary timescale and ask ultimately what factors control total diversity, so that over the long run the major drivers of total species richness can be protected. Within a single climatic region, the temperate area encompassing all of the Northeastern U.S. and Maritime Canada, we hypothesized that geologic factors may take precedence over climate in explaining diversity patterns. If geophysical diversity does drive regional diversity, then conserving geophysical settings may offer an approach to conservation that protects diversity under both current and future climates. Here we tested how well geology predicts the species diversity of 14 US states and three Canadian provinces, using a comprehensive new spatial dataset. Results of linear regressions of species diversity on all possible combinations of 23 geophysical and climatic variables indicated that four geophysical factors; the number of geological classes, latitude, elevation range and the amount of calcareous bedrock, predicted species diversity with certainty (adj. R2 = 0.94). To confirm the species-geology relationships we ran an independent test using 18,700 location points for 885 rare species and found that 40% of the species were restricted to a single geology. Moreover, each geology class supported 5–95 endemic species and chi-square tests confirmed that calcareous bedrock and extreme elevations had significantly more rare species than expected by chance (P<0.0001), strongly corroborating the regression model. Our results suggest that protecting geophysical settings will conserve the stage for current and future biodiversity and may be a robust alternative to species-level predictions.
登录
查看更多内容
影响因子：
3.9
作者：
Baldi, Andras
通讯作者：
Baldi, Andras
影响因子：
64.8
作者：
CURRIE, DJ;PAQUIN, V
通讯作者：
PAQUIN, V
影响因子：
2.9
作者：
CURRIE, DJ
通讯作者：
CURRIE, DJ
影响因子：
6.3
作者：
Nichols, WF;Killingbeck, KT;August, PV
通讯作者：
August, PV
影响因子：
6.1
作者：
PLATT, RB
通讯作者：
PLATT, RB