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Filtering by: Alternative title ssim Report no. 73-9 Degree Name Bachelor of Science (B.S.) Non-Academic Affiliation Oregon Explorer

The Distribution and Abundance of a Non-native Eelgrass, Zostera japonica, in Oregon Estuaries

Creator:

Dudoit, Chana Makale’a

Abstract:

Biological introductions may considerably alter the composition and community dynamics of invaded areas thereby changing many ecosystem processes including productivity, decomposition, nutrient cycling and hydrology. The effects on native species may be obscured by a lack of information on distribution and abundance patterns. The Japanese eelgrass, Zostera japonica, was introduced...

Resource Type:

Undergraduate Thesis

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remaining shores decreased, East from 15% to 9%, South 50% to 32%, and West 46% to 33%. Figure 2: Percent
Rate of prey consumption in two intertidal crab species : the introduced European green crab, Carcinus maenas, and native dungeness crab, Cancer magister

Creator:

Davidson, Timothy Mathias

Abstract:

The prey consumption rates of two estuarine crab species were compared: the introduced Carcinus maenas and the native Cancer magister. Similar sized crabs of each species were placed into individual perforated plastic boxes and then placed in a seawater table. Each crab was offered 50 Mytilus trossulus mussels (15-25mm) per...

Resource Type:

Undergraduate Thesis

Full Text:

the native shore crab Hemigrapsus oregonensis of similar size (Sabre Mahaffy, unpublished report
Use of tethered prey for estimating the impact of the invasive European green crab

Creator:

Hauck, Laura L.

Abstract:

Various mollusks, including small bivalves and gastropod snails, are a common food source for intertidal crabs. Prey opening techniques used on hard-shell prey are dependent on claw size and morphology. For example, large, strong claws can crush a snail outright while smaller, weaker claws leave characteristic peels, pulls and upper...

Resource Type:

Undergraduate Thesis

Full Text:

3 54 60 .33 Sawyer's Landing 9 2 C. maenas 7 50 73 .77 H. oregonensis 6 10 18 .66 Northwest

ScholarsArchive@OSU

The Distribution and Abundance of a Non-native Eelgrass, Zostera japonica, in Oregon Estuaries

Rate of prey consumption in two intertidal crab species : the introduced European green crab, Carcinus maenas, and native dungeness crab, Cancer magister

Use of tethered prey for estimating the impact of the invasive European green crab

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