Summer abundance and activity monitoring of arthropods at Alert, Nunavut

Modified Malaise traps are used to capture surface active and low-flying arthropods. Two 5-trap transects are established in two dominant shorebird foraging habitats that are used during the brood rearing period, i.e. marsh and dry tundra (2 transect/habitat), and run continuously from late June to early August. Traps are emptied every 48 hrs. Arthropods collected are classified to their particular order. Some orders, such as Diptera and Collembola, are further classified to family and separated into size classes.

改良式马氏陷阱（Modified Malaise traps）用于采集地表活动及低飞节肢动物。研究者在滨鸟育雏期依赖的两类核心觅食生境——沼泽与干冻原——内，各布设2条搭载5个陷阱的样带，采样工作自6月下旬持续至8月上旬且全程不间断。所有陷阱每48小时清空一次。所采集的节肢动物将被鉴定至对应目级阶元；其中双翅目（Diptera）、弹尾纲（Collembola）等类群还将进一步细分至科级阶元，并按体型进行分级。