当前位置: X-MOL 学术Coral Reefs › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Trophodynamics of the sclerosponge Ceratoporella nicholsoni along a shallow to mesophotic depth gradient
Coral Reefs ( IF 3.5 ) Pub Date : 2020-10-11 , DOI: 10.1007/s00338-020-02008-3
Keir J. Macartney , M. Sabrina Pankey , Marc Slattery , Michael P. Lesser

The sclerosponge Ceratoporella nicholsoni is a hyper-calcifying high microbial abundance sponge. This sponge has been observed at high densities throughout the Caribbean in the mesophotic zone (30–150 m), as well as cryptic environments in shallow (< 30 m) depths. Given the densities of this sponge, it could play an important role in the cycling of inorganic and organic sources of carbon and nitrogen at mesophotic depths. Additionally, there is broad interest in this sponge as a tool for paleobiology, paleoclimatology and paleoceanography. As a result, it is increasingly important to understand the ecology of these unique sponges in the underexplored Caribbean mesophotic zone. Here we show that this sponge increases in abundance from shallow depths into the mesophotic zone of Grand Cayman Island. We observed no significant differences in the stable isotope signatures of δ15N and δ13C of sponge tissue between depths. A predictive model of sponge diet with increasing depth shows that these sponges consume dissolved organic matter of algal and coral origin, as well as the consumption of particulate organic matter consistent with the interpretation of the stable isotope data. The taxonomic composition of the sclerosponge microbiome was invariant across the shallow to mesophotic depth range but did contain the Phylum Chloroflexi, known to degrade a variety of dissolved organic carbon sources. These data suggest that the depth distribution of this sponge may not be driven by changes in trophic strategy and is potentially regulated by other biotic or abiotic factors.

中文翻译:

沿着浅到中光深度梯度的硬海绵 Ceratoporella nicholsoni 的营养动力学

硬海绵 Ceratoporella nicholsoni 是一种高钙化的高微生物丰度海绵。这种海绵在整个加勒比海的中光带(30-150 m)以及浅(< 30 m)深度的隐秘环境中以高密度被观察到。鉴于这种海绵的密度,它可以在中光深度的无机和有机碳源和氮源的循环中发挥重要作用。此外,人们对这种海绵作为古生物学、古气候学和古海洋学工具的广泛兴趣。因此,在未充分开发的加勒比中光带中了解这些独特海绵的生态变得越来越重要。在这里,我们展示了这种海绵从浅层到大开曼岛中光区的丰度增加。我们观察到不同深度的海绵组织 δ15N 和 δ13C 的稳定同位素特征没有显着差异。随着深度增加的海绵饮食预测模型表明,这些海绵消耗藻类和珊瑚来源的溶解有机物,以及与稳定同位素数据的解释一致的颗粒有机物的消耗。硬海绵微生物群的分类组成在浅到中光深度范围内是不变的,但确实包含 Phylum Chloroflexi,已知可降解各种溶解的有机碳源。这些数据表明,这种海绵的深度分布可能不受营养策略变化的驱动,并且可能受其他生物或非生物因素的调节。随着深度增加的海绵饮食预测模型表明,这些海绵消耗藻类和珊瑚来源的溶解有机物,以及与稳定同位素数据的解释一致的颗粒有机物的消耗。硬海绵微生物群的分类组成在浅到中光深度范围内是不变的,但确实包含 Phylum Chloroflexi,已知可降解各种溶解的有机碳源。这些数据表明,这种海绵的深度分布可能不受营养策略变化的驱动,可能受其他生物或非生物因素的调节。随着深度增加的海绵饮食预测模型表明,这些海绵消耗藻类和珊瑚来源的溶解有机物,以及与稳定同位素数据的解释一致的颗粒有机物的消耗。硬海绵微生物群的分类组成在浅到中光深度范围内是不变的,但确实包含 Phylum Chloroflexi,已知可降解各种溶解的有机碳源。这些数据表明,这种海绵的深度分布可能不受营养策略变化的驱动,并且可能受其他生物或非生物因素的调节。以及与稳定同位素数据的解释一致的颗粒有机物的消耗量。硬海绵微生物组的分类组成在浅到中光深度范围内是不变的,但确实包含 Phylum Chloroflexi,已知可降解各种溶解的有机碳源。这些数据表明,这种海绵的深度分布可能不受营养策略变化的驱动,并且可能受其他生物或非生物因素的调节。以及与稳定同位素数据的解释一致的颗粒有机物的消耗量。硬海绵微生物组的分类组成在浅到中光深度范围内是不变的,但确实包含 Phylum Chloroflexi,已知可降解各种溶解的有机碳源。这些数据表明,这种海绵的深度分布可能不受营养策略变化的驱动,并且可能受其他生物或非生物因素的调节。
更新日期:2020-10-11
down
wechat
bug