Description of the final instar larva of argia serva hagein selys, 1865 (Odonata coenagrionidae) [PDF]
, 2018 The American genus Argia, with more than 100 species described, is the most speciose genus of Odonata in the world. In this contribution, the final stadium larva of Argia serva, the southernmost distributed species of Argia, is described and diagnosed ...
del Palacio, Alejandro +2 more
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Food habits and dietary variability of pelagic nekton off Oregon and Washington, 1979-1984 [PDF]
, 1987 The food habits of 20 species of pelagic nekton were investigated from collections made with small-mesh purse seines from 1979-84 off Washington and Oregon. Four species (spiny dogfish, Squalus acanthias; soupfin shark, Galeorhinus zyopterus; blue shark,
Brodeur, Richard D. +2 more
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Methods of conceptual clustering and their relation to numerical taxonomy [PDF]
, 1985 Artificial Intelligence (AI) methods for machine learning can be viewed as forms of exploratory data analysis, even though they differ markedly from the statistical methods generally connoted by the term.
Fisher, Douglas, Langley, Pat
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Scientia Marina, 2015 Sabellaria alcocki Gravier, 1906, described for the Indian Ocean, should not be present in the Mediterranean area. Though S. spinulosa alcocki, a Mediterranean variety, can be well-distinguished from S.
Marco Lezzi +3 more
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The Aquatic Biota and Groundwater Quality of Springs in the Lincoln Hills, Wisconsin Driftless, and Northern till Plains Sections of Illinois [PDF]
ID: 8307INHS Technical Report prepared for Environmental Protection Trust Fund Commission and Illinois Department of Natural Resources Division of Energy and Environmental AssessmentU of I OnlyRestriction applied due to concern over ...
Phillippe, Loy R. +2 more
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Magnitude and Extent of Contaminated Sediment and Toxicity in Chesapeake Bay [PDF]
, 2007 INTRODUCTION: This report summarizes the results of NOAA's sediment toxicity, chemistry, and benthic community studies in the Chesapeake Bay estuary. As part of the National Status and Trends (NS&T) Program, NOAA has conducted studies to determine the
Hameedi, Jawed, Hartwell, S. Ian
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Significance of chaetal arrangement for maldanid systematics (Annelida, Maldanidae)
Scientia Marina, 2006 Maldanids are usually divided into several subfamilies: Euclymeninae, Lumbriclymeninae, Maldaninae, Nicomachinae, Rhodininae, Clymenurinae, Notoproctinae, and Boguinae. The taxonomy of maldanids and the delimination of these taxa are mainly based on head
Harald Hausen, Christoph Bleidorn
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Biodiversity of macrozoobenthos in a large river, the Austrian Danube, including quantitative studies in a free-flowing stretch below Vienna: a short review [PDF]
, 2005 The Danube is ca. 2850 km in length and is the second largest river in Europe. The Austrian part of the Danube falls 156 metres in altitude over its 351 km length and, since the early 1950s, the river has been developed into a power-generating waterway ...
Fesl, Christian, Humpesch, Uwe
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Soil Organisms, 2019 Morphological characters for identification of Cognettia species are presented both as a dichotomous key and in table form. Focus is on non-sexual characters, as many species reproduce mainly asexually, and sexually mature individuals can be rare.
Svante Martinsson
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Environmental Studies at Newton Lake, Illinois: Tasks 4, 5, and 7 [PDF]
, 1991 ID: 8658; issued March 1, 1991INHS Technical Report prepared for Marathon Oil ...
Nixon, Carolyn +4 more
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