Results 51 to 60 of about 6,187 (170)
Journal of Marine Science and Engineering, 2019 Tidal datums are key components in NOAA’s Vertical Datum transformation project (VDatum), which enables effective vertical transformation of the water level between tidal, orthometric, and ellipsoid -based three-dimensional reference systems.
Wei Wu +5 more
doaj +1 more source
Ecological Entomology, EarlyView.We assessed alpha‐ and beta‐diversity patterns of spiders across different forests and across vegetation layers (ground, shrub, low canopy) at local spatial scales across various Mediterranean forest types. Across forests, alpha‐diversity increased with habitat heterogeneity, which also drove beta‐diversity patterns across plots .
Manuel Marquerie‐Córdoba +8 more
wiley +1 more source
Layered Radial Aquifer Model for Open‐Pit Mine Closure with Managed Aquifer Recharge
Groundwater, EarlyView.A radially symmetric layered aquifer model (unconfined–aquitard–confined) coupled to a pit‐lake water balance is developed to screen managed aquifer recharge (MAR) after open‐pit mine closure. Dimensionless type curves quantify trade‐offs between pit recovery time, pumping/recycling, and unconfined mounding as functions of aquifer time scales, aquitard
Behzad Ataie Ashtiani
wiley +1 more source
Insect Conservation and Diversity, EarlyView.Burrows of the threatened Gibson's Big Sand Tiger Beetle in riverine dune habitats are susceptible to flooding through managed flows. HEC‐RAS modelling identified the flow thresholds above which flooding would occur for burrows and affect the beetle larvae. These findings provide instream flow guidelines for conserving this threatened species and guide
Iain D. Phillips +2 more
wiley +1 more source
Journal of Fish Biology, EarlyView.Abstract Estuary dependence to the survival of Chinook salmon was investigated at the Campbell River estuary, British Columbia, Canada. Replicate batches of marked smolts were transferred from a hatchery and released in 1983, 1984 and 1985 at four ecosystems, two that ensured estuarine experience (river, estuary) and two seawards of the estuary ...
Colin D. Levings, J. Steve Macdonald
wiley +1 more source
Countywide Vertical Datum Conversion Factors in Illinois [PDF]
, 2007 "Countywide Vertical Datum Conversion Factors in Illinois - This map displays countywide, conversion values to adjust elevations from the National Geodetic Vertical Datum 1929 (NGVD 29) to the North American Vertical Datum 1988 (NAVD 88).
Illinois State Water Survey
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Journal of Periodontal Research, EarlyView.Alveolar ridge preservation using a bone allograft and collagen membrane significantly limited hard and soft tissue dimensional changes and promoted buccal bone gain compared with spontaneous healing in sockets with buccal dehiscence defects. This approach reduced the need for additional bone grafting, despite higher short‐term postoperative morbidity.
Cristina Valles +5 more
wiley +1 more source
Restoration Ecology, EarlyView.Sea‐level‐rise and alterations to natural hydrology have contributed to coastal land loss. To combat coastal land loss and maintain the ecosystem services provided by marshes, marsh creation has been broadly implemented. Marsh creation projects can be performed in conjunction with the construction of elevated terrestrial ridges that seek to mimic ...
Erik Nati‐Johnson +3 more
wiley +1 more source
, 1984 Het vertical datum problem is een, opnieuw actueel geworden, probleem sinds er binnen afzienbare tijd meer en nauwkeurigere data verwacht kunnen worden. Om daarmee zinvol te kunnen werken is ook een beter bepaalde referentie noodzakelijk.
Crommentuyn, T. (author)
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A conventional approach for comparing vertical reference frames
Journal of Geodetic Science, 2012 A conventional transformation model between different realizations of a vertical reference system is an important tool for geodetic studies related to precise vertical positioning and physical height determination.
Kotsakis C.
doaj +1 more source