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首页> 外文期刊>Oceanographic Literature Review >Macroalgal, seagrass and mangrove communities
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Macroalgal, seagrass and mangrove communities

机译：大型藻类，海草和红树林群落

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Mangrove benthic macro-invertebrate communities have access to various food sources. The food web in this system may not be based on homogenous mangrove detritus. In order to determine the contributions of mangrove leaf litter and microalgae to the benthic macro-invertebrate community, we analyzed carbon and nitrogen stable isotope ratios in primary producers (mangrove leaf litter, phytoplankton and microphytobenthos), particulate organic matter, sedimentary organic matter and benthic macro-invertebrates from 3 microhabitats (tidal creeks, inside forests and forest gaps) in a mangrove forest in Trang province, Thailand. The stable isotope values of particulate and sedimentary organic matter did not differ greatly between microhabitats, and values were relatively similar to mangrove leaf litter. Invertebrates from tidal creeks and inside forests also showed δ~(13)C values similar to mangrove leaf litter, whereas invertebrate tissues from forest gaps were close to microphytobenthos δ~(13)C values. Most invertebrates showed an enriched δ~(15)N value compared to the local paniculate and sedimentary organic matter. These results indicate that invertebrates utilize different food sources in different microhabitats; they utilized mainly mangrove detritus in the tidal creeks and inside forests, but mainly microphytobenthos in the forest gaps. Moreover, the invertebrate biomass was highest in the forest gaps. This is important new information supporting the view that the mangrove food web is actually a diverse combination of webs based on a variety of resources, including homogenous mangrove detritus.
机译：红树林底栖无脊椎动物群落获得各种食物来源。该系统中的食物网可能不是基于同质的红树林碎屑。为了确定红树林凋落物和微藻类对底栖大型无脊椎动物群落的贡献，我们分析了主要生产者（红树林凋落物，浮游植物和微底栖动物），颗粒有机质，沉积有机质和底栖生物中碳和氮的稳定同位素比。来自泰国董里府红树林中3个微生境（潮汐小溪，森林内部和森林间隙）的大型无脊椎动物。在微生境之间，颗粒物和沉积有机物的稳定同位素值没有太大差异，并且值与红树林凋落物相对相似。来自潮汐小溪和森林内部的无脊椎动物的δ〜（13）C值也与红树林凋落物相似，而来自森林间隙的无脊椎动物的组织接近微植物底栖动物的δ〜（13）C值。与当地的颗粒状和沉积性有机质相比，大多数无脊椎动物显示出丰富的δ〜（15）N值。这些结果表明，无脊椎动物在不同的微生境中利用不同的食物来源。他们主要利用潮汐小溪和森林内部的红树林碎屑，但主要利用森林间隙中的微型植物底栖动物。此外，无脊椎动物的生物量在森林间隙中最高。这是重要的新信息，支持以下观点：红树林食物网实际上是基于包括同质红树林碎屑在内的各种资源的网的多样化组合。

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