. The Canadian field-naturalist. 1977 HiNES: Lesser Scaup Ecology, Saskatchewan 249 emergents DAM. Figure 1. Waterhen Marsh, drawn from a 1970 aerial photo. Throughout the marsh there are a great many the invertebrate fauna are the benthic midge or aquatic invertebrates, which are an important chironomid larvae and free-swimming clado- source of food for waterfowl; two members of Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the ori
. The Canadian field-naturalist. 1977 HiNES: Lesser Scaup Ecology, Saskatchewan 249 emergents DAM. Figure 1. Waterhen Marsh, drawn from a 1970 aerial photo. Throughout the marsh there are a great many the invertebrate fauna are the benthic midge or aquatic invertebrates, which are an important chironomid larvae and free-swimming clado- source of food for waterfowl; two members of Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ottawa Field-Naturalists' Club. Ottawa, Ottawa Field-Naturalists' Club
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