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首页> 外文会议>International Symposium on Managroves as Fish Habitat; 20060419-21; Miami,FL(US) >MANGROVE REMOVAL IN THE BELIZE CAYS: EFFECTS ON MANGROVE-ASSOCIATED FISH ASSEMBLAGES IN THE INTERTIDAL AND SUBTIDAL
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MANGROVE REMOVAL IN THE BELIZE CAYS: EFFECTS ON MANGROVE-ASSOCIATED FISH ASSEMBLAGES IN THE INTERTIDAL AND SUBTIDAL

机译：伯利兹珊瑚礁的红树林去除：对际和子上红树林相关鱼群的影响

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摘要

We investigated the effects of mangrove cutting on fish assemblages in Twin Cays, Belize, in two habitat types. We conducted visual censuses at two sites in adjoining undisturbed/disturbed (30%-70% of shoreline fringe removed) sub-tidal fringing Rhizophora mangle Linnaeus, 1753. Observers recorded significantly more species and individuals in undisturbed sites, especially among smaller, schooling species (e.g., atherinids, clupeids), where densities were up to 200 times greater in undisturbed habitat. Multivariate analyses showed distinct species assemblages between habitats at both sites. In addition, extensive trapping with wire minnow traps within the intertidal zone in both undisturbed and disturbed fringing and transition (landward) mangrove forests was conducted. Catch rates were low: 638 individuals from 24 species over 563 trap-nights. Trap data, however, indicated that mangrove disturbance had minimal effect on species composition in either forest type (fringe/ transition). Different results from the two methods (and habitat types) may be explained by two factors: (1) a larger and more detectable species pool in the subtidal habitat, with visual "access" to all species, and (2) the selective nature of trapping. Our data indicate that even partial clearing of shoreline and more landward mangroves can have a significant impact on local fish assemblages.
机译：我们调查了在两种栖息地类型中，红树林采伐对双胞胎在伯利兹的鱼类种群的影响。我们在毗邻未受干扰/受干扰（已去除海岸线边缘30％-70％）的潮汐下带两个地方进行了视觉普查，1753年。观察者记录了在未受干扰的地点中明显有更多的物种和个体，尤其是在较小的受教育物种中（例如，atherinids，clupeids），其在未受干扰的栖息地中的密度高达200倍。多变量分析表明，两个地点的生境之间的物种组成截然不同。此外，在未受干扰和受干扰的边缘和过渡（陆上）红树林中，在潮间带内用min鱼线诱捕器进行了广泛的诱捕。捕获率很低：在563个捕获夜中，来自24个物种的638个人。陷阱数据表明，红树林干扰对两种森林类型（边缘/过渡带）的物种组成影响最小。两种方法（和栖息地类型）的不同结果可以用两个因素来解释：（1）潮下栖息地中更大且更易于检测的物种库，可以通过视觉“访问”所有物种，（2）诱捕。我们的数据表明，即使部分清除海岸线和更多的陆地红树林也会对当地鱼类种群产生重大影响。

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