<

www.3522com

BODY>

您好,欢迎访问www.3522com官方网站!

ENGLISH| 北大主页
AGU期刊一周Research Spotlight
AGU发布最新Editor's Highlight和国外工作学习机会(Nov 13~Dec 19, 2019)
时间:2019年12月19日 10:55来源: 点击数:

Hydropower and Bugs

Alpine hydropower plants commonly flush sediment that accumulates at intakes, but the associated rapid rise in discharge, turbidity, and streambed instability put aquatic insects at risk.

SOURCE: Water Resources Research

 

 

The discharge (Q) at each point in the floodplain that produces the optimum suitable habitat for stream insects at that point. The figure illustrates how zones of suitable habitat move downstream more rapidly than bottom-dwelling larval insects can migrate downstream. Credit: Gabbud et al. [2019], Figure 5 

Hydropower plants extract water from streams at an intake structure. The decrease in flow at this structure causes sediment deposition that, if not removed, can limit the ability to extract water. Consequently, sediment is periodically flushed from the intakes using a rapid, abrupt pulse of water, a process known as intake flushing.

Gabbud et al. [2019] use field observations and numerical modeling to address the ecological impacts of intake flushing in Alpine hydropower systems. Although these types of hydropower installations and associated flushing are widespread in the Alps, the ecological impacts have received almost no attention and legislation designed to protect stream ecosystems has ignored intake flushing.

This paper combines hydrological, geomorphic, and ecological investigation to demonstrate the impacts of flushing on benthic macroinvertebrates. A primary effect is that the portion of the stream within which habitat is suitable for aquatic insects migrates downstream more rapidly than the insects can move. This finding suggests that current management emphases on simply maintaining minimum flows within the stream below a hydropower plant is not sufficient to sustain river ecosystems.

Citation: Gabbud, C., Bakker, M., Clémen?on, M., & Lane, S. N. [2019]. Hydropower flushing events cause severe loss of macrozoobenthos in Alpine streams. Water Resources Research, 55. https://doi.org/10.1029/2019WR024758

Ellen Wohl, Editor, Water Resources Research

AGU发布最新国外工作学习机会:

1. PhD Research Assistant in Hydrogeology

Madison, Wisconsin

University of Wisconsin - Madison

Accepted applicants will receive a full funding package including tuition, stipend, and benefits.

The Department of Geoscience program is seeking PhD candidates to join the Experimental Hydrogeology Lab

https://findajob.agu.org/job/8011800/phd-research-assistant-in-hydrogeology/

2. Hydrology Internship in Yellowstone National Park (Masters/PhD level; housing provided)

Yellowstone National Park, Wyoming

~$400/wk ($10,400 for 26 weeks) + park housing + $250 travel allowance

National Park Service

The Park Hydrologist is accepting applications for a 26-week paid hydrology internship in Yellowstone National Park through the GSA Geoscientists-in-the-Parks (GIP) program.

https://findajob.agu.org/job/8011795/hydrology-internship-in-yellowstone-national-park-masters-phd-level-housing-provided-/

3. PhD Assistantship in Remote Sensing of Geologic Hazards

Raleigh, North Carolina (US)

$25,000/year + tuition and health insurance

Center for Geospatial Analytics

Seeking a Ph.D. student with background in geology and interest in remote sensing as applied to geologic hazards research

https://findajob.agu.org/job/8011784/phd-assistantship-in-remote-sensing-of-geologic-hazards/

4. Geophysical Postdoctoral Appointee

Albuquerque, New Mexico

DoE

Sandia National Laboratories

We are seeking a Postdoc to work with a multi-disciplinary team aimed at improving this nation's capabilities for monitoring underground nuclear explosions anywhere in the world.

https://findajob.agu.org/job/8011790/geophysical-postdoctoral-appointee-/

5. Graduate Opportunities for Earthquake Hazard Mapping in British Columbia

Department of Earth Sciences, Western University

We are seeking motivated MSc (or PhD) students to study seismic hazard assessment and mapping for Metro Vancouver, British Columbia.

https://findajob.agu.org/job/8011780/graduate-opportunities-for-earthquake-hazard-mapping-in-british-columbia/

关闭

地 址:北京大学廖凯原楼5层 511

邮 编:100871

电 话:010-62752344

传 真:010-62752344

邮 箱:pkuocean@pku.edu.cn

版权所有 strong>www.3522com_葡京集团-[官方网站] Copyright by ocean.pku.edu.cn @2017, All Rights Reserved.

XML 地图 | Sitemap 地图