Short-term effects of hypoxia are more important than effects of ocean acidification on grazing interactions with juvenile giant kelp (Macrocystis pyrifera)

Short-term effects of hypoxia are more important than effects of ocean acidification on grazing interactions with juvenile giant kelp (Macrocystis pyrifera)
复制标题

缺氧的短期影响比海洋酸化对巨藻幼年放牧相互作用的影响更重要

DOI:
10.1038/s41598-020-62294-3
复制
发表时间:
2020
期刊:
影响因子:
4.6
通讯作者:
Micheli, Fiorenza
Micheli, Fiorenza
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Ng, Crystal A.;Micheli, Fiorenza

文献摘要

参考文献

被引文献

相似文献

物种间的相互作用对生态系统的持久性至关重要。在植被生境中,植物和藻类的早期生命阶段必须在放牧等因素中生存下来,才能从干扰中恢复过来。然而,放牧对早期阶段的影响,特别是在气候迅速变化的背景下,在很大程度上是未知的。在这里,我们研究青少年巨型海带(Macrocystis pyrifera)和四种常见的食草动物缺氧和海洋酸化下的相互作用强度,使用短期实验室实验和食草动物丰度的现场数据,以估计人口水平的放牧影响。我们发现,放牧是一个显着的来源的死亡率为少年海带,并使用现场丰度,估计食草动物可以删除平均15.4%,最高73.9%的少年每平方米每天。短期暴露于低氧,而不是酸化,削弱了四个物种之间的相互作用强度,并减少了估计的人口水平的影响放牧三倍,从15.4%到4.0%的少年海带去除,平均每平方米每天。这项研究突出了潜在的高少年海带死亡率放牧。我们还表明,缺氧的影响比酸化的影响更强,在短时间内削弱这些放牧的相互作用,未来可能的后果,通过这些高产的食物网的持久性的巨型海带和能量流。
Species interactions are crucial for the persistence of ecosystems. Within vegetated habitats, early life stages of plants and algae must survive factors such as grazing to recover from disturbances. However, grazing impacts on early stages, especially under the context of a rapidly changing climate, are largely unknown. Here we examine interaction strengths between juvenile giant kelp (Macrocystis pyrifera) and four common grazers under hypoxia and ocean acidification using short-term laboratory experiments and field data of grazer abundances to estimate population-level grazing impacts. We found that grazing is a significant source of mortality for juvenile kelp and, using field abundances, estimate grazers can remove on average 15.4% and a maximum of 73.9% of juveniles per m2per day. Short-term exposure to low oxygen, not acidification, weakened interaction strengths across the four species and decreased estimated population-level impacts of grazing threefold, from 15.4% to 4.0% of juvenile kelp removed, on average, per m2per day. This study highlights potentially high juvenile kelp mortality from grazing. We also show that the effects of hypoxia are stronger than the effects of acidification in weakening these grazing interactions over short timescales, with possible future consequences for the persistence of giant kelp and energy flow through these highly productive food webs.
DOI: --
发表时间: 1989
期刊:
影响因子: --
作者:
R. Seymour;M. Tegner;P. Dayton;E. Parnell
通讯作者: E. Parnell
DOI: 10.2307/1938786
发表时间: 1978-01-01
期刊: ECOLOGY
影响因子: 4.8
作者:
ESTES, JA;SMITH, NS;PALMISANO, JF
通讯作者: PALMISANO, JF
DOI: 10.1111/gcb.13856
发表时间: 2018-01-01
影响因子: 11.6
作者:
Brown, Norah E. M.;Milazzo, Marco;Harley, Christopher D. G.
通讯作者: Harley, Christopher D. G.
DOI: 10.3354/meps12900
发表时间: 2019
影响因子: 2.5
作者:
Christopher J T Mabin;C. Johnson;Jeffrey T. Wright
通讯作者: Jeffrey T. Wright
海带森林中捕食者与猎物相互作用强度的群落分布
影响因子: 11.1
作者:
E. Sala;M. Graham
通讯作者: M. Graham