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首页> 外文会议>International conference on remote sensing for marine and coastal environments >MAPPING SPATIAL/TEMPORAL DISTRIBUTIONS OF GREEN MACROALGAE IN A PACIFIC NORTHWEST COASTAL ESTUARY VIA SMALL FORMAT COLOR INFRARED AERIAL PHOTOGRAPHY
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MAPPING SPATIAL/TEMPORAL DISTRIBUTIONS OF GREEN MACROALGAE IN A PACIFIC NORTHWEST COASTAL ESTUARY VIA SMALL FORMAT COLOR INFRARED AERIAL PHOTOGRAPHY

机译：通过小幅形式的彩色红外线摄影映射太平洋西北沿海河口的绿色宏观格子的空间/时间分布

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A small format 35 mm hand-held camera with color infrared slide film was used to map blooms of benthic green macroalgae upon mudflats of Yaquina Bay estuary on the central Oregon coast, U.S.A. Oblique photographs were taken during a series of low tide events, when the intertidal mudflats along the drowned-river were exposed. The resulting images were digitally scanned and georeferenced to commercially produced digital orthophotographs. Benthic surveys of two transects (～ 3500 m~2) oriented perpendicular to the estuary's channel were conducted within about two weeks of each aerial survey. Distributions of the perennial seagrass Zostera marina along the upper edge of the channel were delineated from the aerial photographs taken in late spring before extensive development of the green macroalgae beds. Summer expansion and fall contraction of these algal beds (comprised principally of Ulva spp. and Enteromorpha spp.) was documented via a series of four aerial and ground surveys conducted between May and December. The study demonstrated the usefulness of this approach in mapping blooms of green macroalgae in Pacific Northwest estuaries.
机译：与彩色红外滑动膜A小格式35毫米手持相机使用时在中心海岸俄勒冈Yaquina湾口滩涂映射底栖绿色海藻繁殖，一系列低潮事件期间拍摄的美国斜照片，当沿着淹死河潮间带泥滩暴露。将得到的图像进行数字化扫描和地理参考到商业生产的数字正射影像。垂直于河口的信道定向的两个断面（〜3500米〜2）的底栖调查是约两周各航测内进行。常年海草大叶藻沿着通道的上缘的分布是前绿色海藻床的粗放型发展春末拍摄的航空照片划定。夏季扩张和这些海藻床的秋天收缩（主要由石莼属，浒苔和属）是通过一系列的五月至十二月间进行了四次空中和地面调查记录。这项研究表明，在西北太平洋入海口绘制绿色海藻大量繁殖这种方法的有效性。

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