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
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发表时间:
2020
影响因子:
4.6
通讯作者:
Micheli, Fiorenza
中科院分区:
文献类型:
--
作者:
Ng, Crystal A.;Micheli, Fiorenza
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.
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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
影响因子:
4.8
作者:
ESTES, JA;SMITH, NS;PALMISANO, JF
通讯作者:
PALMISANO, JF
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.
影响因子:
2.5
作者:
Christopher J T Mabin;C. Johnson;Jeffrey T. Wright
通讯作者:
Jeffrey T. Wright
DOI:
--
发表时间:
2002
影响因子:
11.1
作者:
E. Sala;M. Graham
通讯作者:
M. Graham