Foundation species loss alters multiple ecosystem functions within temperate tidepool communities
Foundation species loss alters multiple ecosystem functions within temperate tidepool communities
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DOI：
10.3354/meps13978
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发表时间：
2022-02-03
影响因子：
2.5
通讯作者：
Silbiger, N. J.
中科院分区：
文献类型：
--
作者：
Fields, J. B.;Silbiger, N. J.
基础物种，有助于维持栖息地和生态系统功能，正在减少，由于人为影响。在岩石潮间带生态系统中，研究调查了基础物种对群落结构和一些资源通量的影响;然而，潮间带基础物种的损失将如何影响生态系统功能的多个方面仍然是未知的。研究了贻贝和海草的直接和间接影响。利用原位潮池模拟技术，研究了俄勒冈州中部潮池对群落结构、通量（光、温度、溶解氧[DO]、溶解无机营养盐、pH（T））和生态系统代谢（净生态系统钙化[NEC]和净生态系统生产量[NEP]）的影响。海草损失增加了微藻覆盖，平均最大光照增加了142%，平均最高温度增加了3.8摄氏度，DO和pH（T）值增加，NEP和NEC分别通过增加最高温度和pH（T）间接增加。贻贝损失增加微藻覆盖，平均最大光照增加5.8%，平均最高温度增加1.3摄氏度，增加DO和pH（T）值，并通过增加生产者覆盖间接增加NEP。基线营养盐浓度和温度值的变化，从沿海上升流影响生态系统的新陈代谢池与完整的基础物种。我们的研究结果表明，作为社区响应基础物种的损失，生态系统功能取决于目前的优势社区和生物或物理驱动的地球化学变化。这项研究强调了社区和生态系统生态学之间的联系，在了解发生的变化与生物驱动的潮间带基础物种损失的幅度的重要性。
Foundation species, which help maintain habitat and ecosystem functioning, are declining due to anthropogenic impacts. Within the rocky intertidal ecosystem, studies have investigated the effects of foundation species on community structure and some resource fluxes; however, how intertidal foundation species loss will affect multiple facets of ecosystem functioning in concert remains unknown. We studied the direct and indirect effects of foundation species loss of mussels Mytilus cahfornianus and surfgrass Phyllospadix spp. on community structure, fluxes (light, temperature, dissolved oxygen [DO], dissolved inorganic nutrients, pH(T)), and ecosystem metabolism (net ecosystem calcification [NEC] and net ecosystem production [NEP]) in central Oregon using in situ tide pool manipulations. Surfgrass loss increased microalgae cover, increased average maximum light by 142% and average maximum temperature by 3.8 degrees C, increased DO and pH(T) values, and indirectly increased NEP and NEC via increased maximum temperature and pH(T) respectively. Mussel loss increased microalgae cover, increased average maximum light by 5.8% and average maximum temperature by 1.3 degrees C, increased DO and pH(T) values, and indirectly increased NEP via increased producer cover. Shifts in baseline nutrient concentrations and temperature values from coastal upwelling influenced ecosystem metabolism in pools with intact foundation species. Our results indicate that as communities respond to foundation species loss, ecosystem functioning depends on the dominant community present and biologically or physically driven shifts in biogeochemistry. This study highlights the importance of the connection between community and ecosystem ecology in understanding the magnitude of changes occurring with anthropogenically-driven intertidal foundation species loss.