Bonnie J. Becker

Bonnie J. Becker
University of Washington Tacoma | UW Tacoma · Faculty of Interdisciplinary Arts and Sciences

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19
Publications
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783
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Publications

Publications (19)
Article
Full-text available
For effective long-term restoration of depleted marine species, it is critical that populations are able to replenish themselves through reproduction. The Olympia oyster Ostrea lurida (Carpenter, 1864), the only native oyster species on the West Coast of North America, is the subject of a number of restoration efforts across its range. Information...
Article
An effective method of anesthesia for Olympia oysters (Ostrea lurida) would allow for nonlethal sampling of tissues for genetic analysis, biopsy for diseases, assessing reproductive status, and collection of brooding larvae. The use of magnesium sulfate (MgSO4) as an anesthetization method for Olympia oysters was assessed in laboratory trials and f...
Article
Full-text available
Geochemical signatures of early life stages are increasingly used to study population connectivity. This approach utilizes spatial variability in chemical signatures to predict natal or nursery origins of post-dispersal individuals by comparison with a chemical reference atlas created from individuals of known origin. To examine the relative import...
Article
Full-text available
The exchange of individuals among habitat patches (connectivity) has broad relevance for the conservation and management of marine metapopulations. Elemental fingerprinting-based research conducted over the past 12 years along the open coastline and bays of San Diego County in southern California evaluated connectivity patterns for seven species: o...
Article
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Realistic species-specific information about larval life history is necessary for effective management of shellfish and parameterization of larval connectivity models. The patchiness of dispersing larvae, and the resources needed for sorting and identifying them, has limited many studies of larval distribution in the field, especially for species t...
Article
The use of geochemical tags in calcified structures of fish and invertebrates is an exciting tool for investigating larval population connectivity. Tag evaluation over relatively short intervals (weeks) may detect environmental and ecological variability at a temporal scale highly relevant to larval transport and settlement. We collected newly sett...
Article
Full-text available
Molluscan shell chemistry may provide an important archive of mean annual temperature (MAT) and mean annual range in temperature (MART), but such direct temperature interpretations may be confounded by biologic, metabolic, or kinetic factors. To explore this potential archive, we outplanted variously sized specimens of the common mussel Mytilus cal...
Article
Paleoceanographic reconstructions depend upon accurate estimations of mean annual temperature (MAT) and mean annual range in temperature (MART). Mollusk shells may offer an archive of seasonal to decadal data on environmental conditions. However, a suite of factors (e.g., biologic, metabolic, kinetic) may confound interpretations of mollusk records...
Article
Full-text available
Based on the belief that marine larvae, which can spend days to months in the planktonic stage, could be transported considerable distances by ocean currents, it has long been assumed that populations of coastal species with a planktonic larval stage are demographically open and highly "connected." Such assumptions about the connectivity of coastal...
Article
Full-text available
Here long-term monitoring data taken at 33 sites in southern and central California coast and islands were used to evaluate the size structure of the large intertidal limpet, Lottia gigantea in restricted-access and in easily accessible intertidal zones that encompass a wide range of ecological variables. Using multi-dimensional analysis of populat...
Article
Full-text available
Mg/Ca ratios of metazoan carbonate may provide a useful archive of decadal and seasonal parameters such as mean annual temperature and annual range in temperature, but the reliability of this proxy remains questionable given potential ontogenetic and microenvironmental effects. We investigated these potential effects in the mussel species Mytilus c...
Article
Elements incorporated into developing hard parts of planktonic larvae record the environmental conditions experienced during growth. These chemical signatures, termed elemental fingerprints, potentially allow for reconstruction of locations of larvae. Here, we have demonstrated for the first time the feasibility of this approach for bivalve shells....
Article
Abstract The diverse fauna and flora of rocky intertidal ecosystems are being impacted by the activities of rapidly increasing coastal populations in many regions of the world. Human harvesting of intertidal species can lead to significant changes in body sizes of these taxa. However, little is known about the temporal trajectories of such size dec...

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