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首页> 外文期刊>Marine ecology progress series >Modeling of reproduction in the intertidal macrophyte Fucus vesiculosus and implications for spatial subsidies in the nearshore environment
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Modeling of reproduction in the intertidal macrophyte Fucus vesiculosus and implications for spatial subsidies in the nearshore environment

机译：潮间带水生植物榕榕生殖繁殖的建模及其对近岸环境空间补贴的影响

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摘要

Environmental sensitivities that represent reproductive adaptations are well enough known in some species of marine broadcast spawners, including fucoid algae, to consider wider ecological implications of gamete release. Here, we test and refine a preliminary model for gamete release in the intertidal foundation species Fucus vesiculosus L., one of the most abundant broadcast spawners of the North Atlantic rocky shore. Local environmental conditions and levels of gamete release were determined during 2 reproductive seasons at 4 sites on the Schoodic Peninsula (Maine, USA). These studies supported the hypothesis that asynchrony in the incidence and magnitude of natural gamete release occur when environmental conditions (i.e. light, water motion) across projections of the coastline are uneven. Gamete release occurs on sunny days when winds speeds are <6.6 m s~(-1). Using these data, we modeled historical meteorological data for part of the Gulf of Maine (GOM) to hindcast gamete release in F. vesiculosus. The regional model predicted that gamete release increased at many GOM sites over 22 yr (1985-2006). Combining local fucoid density, zone width, and linear coastline data with C and N analysis of eggs, we found that fucoid egg release is an uncharacterized subsidy available to many trophic levels, which is pulsed into the nearshore GOM. Our results provide important insights into the consequences of ocean-climate variability on biological processes.
机译：代表生殖适应的环境敏感性已在某些海洋广播产卵物种（包括岩藻类藻类）中广为人知，可以考虑配子释放的更广泛的生态意义。在这里，我们测试和完善了潮间带基础物种Fusus vesiculosus L.的配子释放的初步模型，该物种是北大西洋多岩石的海岸中繁殖最丰富的繁殖地之一。在Schoodic半岛（美国缅因州）的4个地点的2个繁殖季节中，确定了当地环境条件和配子释放水平。这些研究支持以下假设：当海岸线投影上的环境条件（即光，水运动）不均匀时，自然配子释放的发生率和大小会发生异步。配子释放发生在风速小于6.6 m s〜（-1）的晴天。使用这些数据，我们对缅因湾（GOM）的部分地区的历史气象数据进行了建模，以预测vesiculosus中后配子的释放。区域模型预测，超过22年（1985-2006年），许多GOM部位的配子释放增加。结合局部岩藻样密度，区域宽度和线性海岸线数据与鸡蛋的C和N分析，我们发现岩藻样卵的释放是可用于许多营养级的无特征的补贴，被脉动到近岸GOM中。我们的结果为海洋气候变化对生物过程的影响提供了重要的见识。

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