Join Island County Beach Watchers as they explore and survey the rich intertidal zone.

hint: click on any thumbnail, (or plant/animal reference) to get a bigger picture

Wednesday, July 14, 2010

Camano Island State Park - July 14, 2010

With the completion of monitoring for 2010, Camano Beach Watchers took the time to begin evaluation of data collection. You can find a set of comparisons in CHARTS that are linked at the bottom of the main Intertidal Zone webpage. Take a look at what collected data says about our species gains/losses on our shorelines. Then enjoy the pictures below from this year's monitoring.

CISP - 2010

Intertidal Monitoring teams set up lines on both the north and south sides of the State Park boat launch areas. Beach Watchers have been observing for several years the significant differences between the two sides. The "south" side is rather devoid of critters while the "north" side is richer in both seaweeds and sea life. One factor that is introduced here is the wave motion difference between the two sides. Other conclusions are yet to be drawn.



Eagle watching L1

Team searching

Temp supervisor




Isopod

Filament Disposal

Team consensus

Tuesday, July 13, 2010

Partridge Point

Partridge Point team photo 2010

Team at work-Partridge Point

Burrowing sea cucumber

Tiny clingfish

Probable Mopalia sp.

Suberities sp.

Blood star

Halichondria




After the cold windy conditions encountered monitoring Rosario Beach, the Partridge Point team was relieved the next day to find that the weather was considerably improved. In fact, it was downright nice as the team of six surveyed that very diverse rocky, high energy west Whidbey beach. They found four species of encrusting sponge (breadcrumb, purple, red, and Suberites), two species of sea stars (blood star and sunflower star), and a nifty large green and gray shrimp. It was unusual that no Leptasterias (six-rayed) sea stars were seen as that species has been a common find on this beach in previous years. Large numbers of little brown barnacles (Cthamalus dalli) were observed on the high intertidal erratic at the start of the profile line and further down, team members were delighted to find numerous tiny northern clingfish (Gobiesox maeandricus) among the kelp. Two unusual finds were those of a small white burrowing sea cucumber of the genus Leptosynaptas and a brightly colored chiton thought to be one of the Mopalias.

As the tide reached its lowest point (-2.7 feet), an amazing assortment of seaweed was revealed including Osmundia spectabilis (sea laurel), Plocamium sp. (sea comb), Alaria marginata (winged kelp), Egregia menziesii (feather boa kelp), Nereocystis luetkeana (bull kelp), upright and encrusting red coralline algae, and Acrosiphonia sp. (green rope). In addition the seagrass Phyllospadix grew from low intertidal boulders.

Monday, July 12, 2010

Rosario Beach

All three teams at work

Rosario Beach team photo 2010

Team 1

Team 2

Team 3

Urticina crassicornis

Dwarf chiton


It was a bundled up crew that turned out to monitor Rosario Beach on July 12th. A cold wind stirred up whitecaps and chilled the bones so coats, hats, and even mittens were the order of the day. Those conditions made it hard to believe it was mid-July! Because this beach is bedrock, there is no profile line; instead, 17 quadrats are laid out. Seaweed and animal life within each quadrat’s area are identified and quantified. The eight monitors were divided into three teams, each of which tackled their assigned quadrats. Among the finds were 5 species of barnacles and 4 species of limpets. They counted hundreds of periwinkles and saw Onchidella borealis, a tiny pulmonate sea slug commonly called a leather limpet. In addition they identified Gould’s baby chiton (Lepidochitona sp.) and a dwarf chiton (Leptochiton rugatus). The dwarf chiton was quite an unusual find. Its common name is a good one as their maximum length is only about half an inch. This species is typically whitish in color and found in the very low intertidal zone.

Endocladia muricata

Leathesia

The team also found a diversity of seaweed including rockweed (Fucus sp.), sea moss (Endocladia muricata), and sea cauliflower (Leathesia). Sammye Kempbell is team captain at Rosario.

Sunday, July 11, 2010

Honeymoon Bay

Honeymoon Bay team photo 2010

Black clawed crab



A team of four turned out for Honeymoon Bay on July 11th with Finn Gatewood heading up the team. Using 20 foot sections, they made quick work of the profile line. Along the way they found 3 plainfin midshipmen fish guarding their egg clusters. Those midshipmen fish that guard the egg clusters are typically males that remain for the 15 days it takes for the eggs to hatch and then continue to guard the larvae for about a month until they are mature enough to leave the nest. This team also found an abundance of black clawed crabs (Lophopanopeus bellus). Owners of this beach and a couple of their friends came along for the survey and noted they are beginning to find non-native purple varnish clams showing up along this stretch of the intertidal zone.

Saturday, July 10, 2010

Columbia Beach

Columbia Beach team at work

Working on profile line



Bill and Evelyn Blair put together a team of seven to look at Columbia Beach on July 10th. They found dramatic changes had taken place due to shifting sediments building up the beach. It was especially noticeable against a bulkhead that at one time stood 5 feet above the surface but now only 15 inches of it remains visible above the sand. Drift logs have also washed in and helped to stabilize the new sediment. This in turn has allowed backshore plants to make an appearance. The team found that overall abundance of organisms was down in comparison to previous years including numbers of moonsnails. The most popular critter find of the day was a caprellid amphipod.
image magnification powered by PopBox