@article {76896, title = {Duration of temperature exposure controls growth of Zostera japonica: Implications for zonation and colonization}, journal = {Journal of Experimental Marine Biology and Ecology}, volume = {464}, year = {2015}, note = {This study looks at the distinct zonation of the native eelgrass (Z. marina) and the introduced Japanese eelgrass (Z. japonica). None of the {\textquotedblleft}usual suspects{\textquotedblright} (dessication tolerance, light limitation, interspecific competition) adequately explain the different estuarine zones occupied by the two species. The authors {\textquotedblleft}hypothesize that differences in thermal optima may be responsible for the observed zonation patterns.{\textquotedblright} (p.68) This interesting paper has important implications for the possible future spread of Japanese eelgrass.}, month = {2015, Mar.}, pages = {p.68{\textendash}74}, keywords = {eelgrass = Zostera marina, Idaho Point, introduced species, Japanese eelgrass = Zostera japonica, Sally{\textquoteright}s Bend, temperature, Yaquina Bay, zonal distribution}, doi = {doi:10.1016/j.jembe.2014.12.015}, author = {Kaldy, James E. and Shafer, Deborah J. and Magoun, A. Dale} } @article {77216, title = {Effects of temperature, salinity and seed age on induction of Zostera japonica germination in North America, USA}, journal = {Aquatic Botany}, volume = {126}, year = {2015}, note = {This paper examines seed germination in the invasive Japanese eelgrass. {\textquotedblleft}Our results suggest that seasonal pulses of cold temperatures coupled with low salinity may stimulate Z. japonica seed germination. . . However, prolonged exposure to freshwater is likely to result in increased incidence of rotten seeds and poor subsequent seedling survival. Consequently, it would appear that optimum conditions for Z.japonica seed germination consist of cold temperature stratification with brief pulses of low salinity (<10) conditions followed by a gradual return to higher salinity conditions that favor the development of seedlings and adult plants. This is similar to estuarine salinity dynamics following significant storm events during the wet season in Oregon coastal systems.{\textquotedblright} (p.77-78)}, month = {2015, Oct.}, pages = {p.73{\textendash}79}, keywords = {fecundity, germination. Introduced species, Japanese eelgrass = Zostera japonica, reproduction, salinity, water temperature, Yaquina Bay}, doi = {doi:10.1016/j.aquabot.2015.06.006}, author = {Kaldy, James E. and Shafer, Deborah J. and Ailstock, M. Stephen and Magoun, A. Dale} } @article {54801, title = {Comparison of photosynthetic characteristics of the seagrass congeners Zostera marina L. and Zostera japonica Ascher. \& Graeb.}, journal = {Aquatic Botany }, volume = {112}, year = {2014}, note = {{\textquotedblleft}On the Pacific coast of North America two seagrass species in the genus Zostera co-exist; the native species, Zostera marina, and an introduced species, Zostera japonica. These two species typically occupy separate tidal elevations, with Z. marina occupying the lower intertidal and shallow subtidal zones, and Z. japonica occupying the mid- to upper intertidal zone. This study was designed to compare the photosynthetic characteristics of Z. japonica and Z. marina after exposure to high and low light. . . . {\textquotedblleft}}, month = {2014, Jan.}, pages = {p.91-97}, keywords = {aquatic plants, carbon, eelgrass = Zostera marina, habitats, Idaho Flats, introduced species, Japanese eelgrass = Zostera japonica, natural resource management, oxygen, Yaquina Bay, zonal distribution}, doi = {10.1016/j.aquabot.2013.09.002}, author = {Shafer, Deborah J. and Kaldy, James E.} } @article {54881, title = {Effect of temperature and nutrient manipulations on eelgrass Zostera marina L. from the Pacific Northwest, USA}, journal = {Journal of Experimental Marine Biology and Ecology }, volume = {453}, year = {2014}, note = {"Global climate change will impact the three dominate drivers of estuarine seagrass productivity, temperature, light and nutrients. The response of Pacific Northwest (PNW) Z. marina to interactive effects of temperature and nitrogen conditions was experimentally evaluated. . . . Temperature played a dominant role controlling Z. marina response to nutrients; nitrogen toxicity was not observed, and in general the effects of temperature and nutrients were not synergistic. This work highlights the complex nature of Z. marina response to environmental conditions; additional multifactor experiments will be required to tease apart these interactions." (from the Abstract)}, month = {2014, Apr.}, pages = {p.108{\textendash}115}, keywords = {climate change, eelgrass = Zostera marina, nitrate-nitrite, nitrogen, nitrous oxide, nutrients, primary production, temperature, Yaquina Bay}, doi = {10.1016/j.jembe.2013.12.020}, author = {Kaldy, James E.} } @article {52376, title = {Science and management of the introduced seagrass Zostera japonica in North America}, journal = {Environmental Management }, volume = {53}, year = {2014}, note = {The Pacific Coast of North America is home to two species of eelgrass: the native Zostera marina, and the introduced Zostera japonica. This review looks at the two species, which are managed very differently in different parts of the West Coast. Should the invader be driven out and destroyed? Should it be ignored? The authors identify gaps in knowledge that limit resource managers{\textquoteright} ability to decide, and make recommendations for management and future research. }, month = {2014, Jan.}, pages = {p.147-162}, keywords = {Coos Bay, Coquille River estuary, eelgrass = Zostera marina, geographic distribution, habitats, introduced species, Japanese eelgrass = Zostera japonica, natural resource management, Netarts Bay, Tillamook Bay, Yaquina Bay}, doi = {10.1007/s00267-013-0172-z}, author = {Shafer, Deborah J. and Kaldy, James E. and Gaeckle, Jeffrey L.} } @article {49771, title = {In situ13C tracer experiments elucidate carbon translocation rates and allocation patterns in eelgrass Zostera marina}, journal = {Marine Ecology Progress Series}, volume = {487}, year = {2013}, note = {In this project, native seagrass was studied in summer and in winter using carbon-13 as a tracer to monitor changes in carbon uptake. {\textquotedblleft}The results provide important estimates of carbon uptake and translocation that can be used to better understand whole plant carbon budgets as well as the transfer of seagrass-derived carbon to other trophic communities.{\textquotedblright} (from the Abstract)}, pages = {p.27-39}, keywords = {carbon, eelgrass = Zostera marina, isotopes, Yaquina Bay}, doi = {10.3354/meps10354}, url = {https://www.int-res.com/articles/meps2013/487/m487p027.pdf}, author = {Kaldy, James E. and Brown, Cheryl A. and Andersen, Christian P.} } @article {83285, title = {Sediment diatom species and community response to nitrogen addition in Oregon (USA) estuarine tidal wetlands}, journal = {Wetlands}, volume = {32}, number = {6}, year = {2012}, note = {Tested responses of sediment diatom communities in tidal wetlands of Yaquina Bay to nitrogen addition in the summers of 2009 and 2010. Identified 88 diatom taxa in the area. The four individual plots showed high species richness, of about 32-42 different species per plot. A strong response to nitrogen addition was found. Suggests that {\textquotedblleft}the sediment diatom community is a strong candidate for use as an aquatic bioassessment tool in tidal wetlands{\textellipsis}{\textquotedblright} (p.1029) }, month = {2012, Dec.}, pages = {p.1023-1031}, keywords = {algae, Amphora spp., aquatic vegetation, Cocconeis placentula, diatoms, fertilizers, Hatfield Marine Science Center, Idaho Point, nitrogen, Planothidium delicatulum, Sally{\textquoteright}s Bend, salt marsh, Saltgrass = Distichlis spicata, Saltwort = Sarcocornia virginica, wetlands, Yaquina Bay}, doi = {https://doi.org/10.1007/s13157-012-0332-6}, author = {Hankin, Shanon L. and Weilhoefer, Christine L. and Kaldy, James E. and DeWitt, Theodore H.} } @article {34256, title = {Recolonization of intertidal Zostera marina L. (eelgrass) following experimental shoot removal}, journal = {Journal of Experimental Marine Biology and Ecology }, volume = {374}, number = {1}, year = {2009}, note = {This paper studies the time it takes for eelgrass meadows to recover from disturbances, in particular the difference between continuous lower intertidal meadows as opposed to higher intertidal patches of eelgrass. Areas of eelgrass in Yaquina Bay were denuded and the time of recovery was studied. The lower continous meadows recovered within 24 months, but recovery for the patchy higher intertidal eelgrass plots was much slower. Map, charts, aerial photographs. Summarizes current state of eelgrass beds in the Yaquina estuary.}, pages = {p.69-77}, keywords = {aquatic vegetation, eelgrass=Zostera marina, habitat restoration}, doi = {10.1016/j.jembe.2009.04.011}, author = {Boese, Bruce L. and Kaldy, James E. and Patrick J Clinton and Eldridge, Peter M. and Folger, Christina L.} }