MLLWMean Lower Low Water
MLLWMixed Low Level Waste
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In total, the sum of all non-tidal components of the highest levels during April and August was close to 30 cm above MLLW, but the relative contributions of each component differed in each case.
Mean daily seawater temperatures at 15 m (MLLW) for the period from 20 May through 22 August 2011, were 8.2[degrees]C, 8.1[degrees]C, 8.0[degrees]C and 7.7[degrees]C for Womens, Pillar, Holiday, and Kalsin, respectively.
On 24 July 2013, temperature loggers were placed at three microhabitats characterized as low-shore-wave-exposed (+0.40 m above MLLW), high-shore-wave-exposed, and high-shore-sheltered (+0.90 m above MLLW).
During each sampling period, two to three replicate counts were made in which the entire harbor was censused by two or three people on days of approximately equivalent low tides (between + 1.5 and +2.5 MLLW).
Tidal heights are given in meters relative to MLLW. Zones for plots in which tidal height was not directly measured were determined by position of plot relative to measured plots.
The transects were located at mid-tidal height from +1.7 to 1.85 m MLLW. On average, they are covered by 18 high tides a month.
Marine waters from Skagit Bay primarily enter the lagoon through the outlet channel located at the northern portion of the lagoon, but the barrier beach also overwashes from the south at the highest tides [i.e., >2.7 m above mean lower low water (MLLW)].
Mussels were sampled haphazardly from a height of 1.4 to 1.8 m above mean lower low water (MLLW) on a falling tide, placed in a cooler, and returned to the California State University, Long Beach marine laboratory for processing.
Donax gouldii were collected from San Diego County, CA, between January 21, 2009, and May 6, 2009, from tidal heights ranging from -0.3m MLLW to +0.3m MLLW.
Because higher pools might have less chance of fish recolonization because they are less frequently inundated by seawater (Griffiths et al., 2003), every effort was made to select pools located in the mid-intertidal zone (1-1.5 m above MLLW [mean lower low water]) and, although pools were visually similar, they varied in volume, ranging from 762 to 2160 liters (or 0.76-2.16 [m.sup.3]).
To determine if this was due to a vertical extension of the barnacle zone rather than a contraction of the algal zone, distribution patterns were quantified at all sites using standard surveying equipment and then standardizing elevations to mean lower-low water (MLLW).
For example, mussels subject to wave splash on Tatoosh Island can inhabit MLLW (mean lower low water) +3m (Suchanek 1978, Leigh et al.