[PDF][PDF] Spheres of discharge of springs

AE Springer, LE Stevens - Hydrogeology Journal, 2009 - docs.springstewardship.org
Although springs have been recognized as important, rare, and globally threatened
ecosystems, there is as yet no consistent and comprehensive classification system or common …

Science and values in river restoration in the Grand Canyon: there is no restoration or rehabilitation strategy that will improve the status of every riverine resource

…, RH Webb, RA Valdez, GR Marzolf, LE Stevens - …, 1998 - academic.oup.com
Restoration of riverine ecosys-tems is often stated as a management objective for regu-lated
rivers, and floods are one of the most effective tools for accomplishing restoration. The …

[HTML][HTML] Characteristics, main impacts, and stewardship of natural and artificial freshwater environments: consequences for biodiversity conservation

…, S Poikane, CM Pringle, LE Stevens, E Turak… - Water, 2020 - mdpi.com
In this overview (introductory article to a special issue including 14 papers), we consider all
main types of natural and artificial inland freshwater habitas (fwh). For each type, we identify …

[BOOK][B] Aridland springs in North America: ecology and conservation

LE Stevens, VJ Meretsky - 2008 - books.google.com
Springs ecosystems are among the most structurally complicated, ecologically and biologically
diverse, productive, evolutionarily provocative, and threatened ecosystems on earth. …

Colorado River benthic ecology in Grand Canyon, Arizona, USA: dam, tributary and geomorphological influences

LE Stevens, JP Shannon… - … Rivers: Research & …, 1997 - Wiley Online Library
The serial discontinuity concept (SDC; Ward and Stanford, in Ecology of River Systems,
1983) predicts that recovery of large regulated rivers over distance downstream from a dam is …

Consequences of fluctuating discharge for lotic communities

W Blinn, JP Shannon, LE Stevens… - Journal of the North …, 1995 - journals.uchicago.edu
We used five in situ experiments to test the influence of fluctuations in river discharge on the
structure and function of the tailwaters benthos associated with cobble substrata in the …

A 4500-year record of large floods on the Colorado River in the Grand Canyon, Arizona

…, LL Ely, EE Wohl, LE Stevens… - The Journal of …, 1994 - journals.uchicago.edu
A sequence of flood deposits left by the Colorado River in the Grand Canyon, Arizona,
provides evidence of at least 15 floods with peak discharges greater than $$5500 m^{3}sec^{-1}$…

Springs ecosystem classification

LE Stevens, ER Schenk, AE Springer - Ecological Applications, 2021 - Wiley Online Library
Springs ecosystems are globally abundant, geomorphologically diverse, and bio‐culturally
productive, but are highly imperiled by anthropogenic activities. More than a century of …

Gauging the severity of surgical sepsis

LE Stevens - Archives of Surgery, 1983 - jamanetwork.com
• I developed a method for scoring the severity of a septic process, based on deteriorated
functions in seven key organ systems of the body. The scoring system is numeric and …

Oases of the future? Springs as potential hydrologic refugia in drying climates

…, JR Spence, AE Springer, LE Stevens - Frontiers in Ecology …, 2020 - Wiley Online Library
Natural springs in water‐limited landscapes are biodiversity hotspots and keystone ecosystems
that have a disproportionate influence on surrounding landscapes despite their usually …