Stream restorations that increase geomorphic stability can improve habitat quality, which should benefit selected species and local aquatic ecosystems. This assumption is often used to define primary restoration goals; yet, biological responses to restoration are rarely monitored or evaluated methodically. Macroinvertebrate communities were inventoried at 6 study reaches within 5...
There is much talk on recycling organic effluents, closing nutrient cycles, maximising energetic efficiency, and maintaining
equilibriums between humans and nature, etc., even for lakes and estuaries. Aquatic systems provide us (humans)
the service of recycling decomposable organics and deliver fish at the same time, notably, as long as the...
Due to the immanent common property problem of water, non-point-pollution is the common feature of many inland waters and the eutrophic levels are alarmingly high. drinking water and other services are negatively affected by high eutrophic levels fisheries. Concerning causes of pollution, agriculture, subject to overuse of fertilizer and pesticides,...
A new genus and species of megaridid, Minysporops dominicanus gen. n., sp. n. (Hemiptera: Megarididae), is described from Dominican amber. Diagnostic characters include: Minute (under 2.00 mm), glabrous, nearly round body; declivitous flat-topped head; eyes constricted near middle, with dorsal eye shields; ocelli ovoid-elliptical; antennae 4-segmented, setose; rostrum 4- segmented;...
This is a bibliography of doctoral dissertations and masters' theses in forestry and related topics issued during the period from July 1981 through June 1990. The colleges and universities included are all accredited by the Society of American Foresters. The actual listings were supplied by the individual institutions. Topics covered...
Located approximately 360 nm off the coast of Chile there is a disjoint realm of two small
oceanic islands systems, the Juan Fernández and the Desventuradas archipelago. Currently the local economy
of the islands is almost exclusively supported by the harvest and trade of marine resources, focusing mainly on
the...
The oldest strata present in the Swales Mountain area
are part of the Roberts Mountains allochthon. These include
the western-facies Ordovician Vinini Formation and unnamed
transitional-facies Devonian limestones. The Vinini Formation
comprises dark cherts and black to brown shales
deposited in a deep-water oceanic environment. The Devonian
limestones include numerous...
Full Text:
Mountain area, Elko County, Nevada
AN ABSTRACT OF THE THESIS OF
Margaret Anne Pendergast for the degree
With improvements in both instrumentation and algorithms, methods for mapping terrestrial snow cover using optical remote sensing data have progressed significantly over the past decade. Multispectral data can now be used to determine not only the presence or absence of snow but the fraction of snow cover in a pixel....